Method for rolling and shaping aluminum alloy conical ring

Roll forming method of large and medium aluminum alloy solid disk forging

The invention discloses a roll forming method of a large and medium aluminum alloy solid disk forging, which comprises the following steps of: firstly upsetting aluminum alloy bar materials, profiling into a solid disk blank; and rolling the disk blank in a rolling machine; when rolling within 20s, expanding the disk blank at a speed of 9-12mm/s under a 4000-4900KN axial rolling force with an axial feed speed of 1.9mm/s; when rolling in the time range of 20-40s, expanding the disk blank at a speed of 8-10mm/s under a 3000-3500KN axial rolling force with an axial feed speed of 0.9mm/s; and when rolling within the time range of 40-70s, expanding the disk blank at a speed of 5-8mm/s under a 2500-3000KN axial rolling force with an axial feed speed of 0.5mm/s; and finally rolling into the solid disk forging one one-grade fire. The method is mainly used for rolling the disk forging with excellent shape, dimension, organization and performance.

Dual-mode optical imaging probe and preparation method thereof

The invention discloses a dual-mode optical imaging probe and a preparation method thereof. The dual-mode optical imaging probe comprises nano particles which are dispersed in a water solution, each nano particle comprises a core body and a wrapping layer, wherein the core body is a gold or silver nano aggregate; the wrapping layer is multilayer PDDA (Poly (Diallyldimethylammonium Chloride)) and PSS (Poly Sodium Styrenesulfonate) which are alternately adsorbed; and the outermost layer of the wrapping layer is PDDA with fluorescent materials absorbed. The preparation method of the dual-mode optical imaging probe comprises the following steps of: preparing the Raman marker-induced gold or silver nano aggregate; then adding a PDDA water solution to a water solution of the Raman marker induced gold or silver nano aggregate, stirring, and then alternately adsorbing PSS and PDDA for multiple times; then adding the fluorescent materials and the PDDA water solution, and the like. The dual-mode ...

Phase laser range finder and phase inspecting method thereof

The invention discloses a phase type laser range finder and a phase detecting method thereof, belonging to the electronic measurement technical field. The phase type laser range finder comprises a signal sampling control module, a first signal amplifying filter module, a second signal amplifying filter module, a scale signal generation module, a laser modulation launching module, a light signal receiving detection module, a signal logarithmic converter, a power module and a display module. The phase detecting method comprises: selecting a system down sampling frequency, finding sampling data length, grouping sampling data, calculating phase shift and distance. The phase type laser range finder adopting the phase detection method can utilize a quartz crystal filter to filer the ranging signals, utilize continuous indirect scale frequency and down sampling technique, and combine sampling and signal processing functions on a chip, having simple structure, high measurement accuracy and low ...

Detecting system of superficial defects of small-size materials

The invention discloses a detecting system of superficial defects of small-size materials, comprising a pulse laser, a beam splitter, a cylindrical convex lens, a receiving sensor, a high-precision time delay device and an electronic computer, wherein the beam splitter is arranged in front of the pulse laser; the laser beams emitted by the pulse laser are split into two beams by the beam splitter, one of the two beams is focused by the cylindrical convex lens and enters into the surfaces of the materials to be detected and the other one of the two beams enters into the high-precision time delay device; the output end of the high-precision time delay device is connected with the input end of the receiving sensor; the high-precision time delay device delays for a while after receiving laser signals and then outputs electrical signals as the trigger signals of the receiving sensor; and the receiving sensor begins to detect the ultrasonic signals propagated on the materials to be detected after ...

Fluorine-containing polyimide electro-optical material and preparation method thereof

The invention relates to a fluorine-containing polyimide electro-optical material, which has high nonlinear optical response, high thermal stability, low optical transmission loss and good film forming property. Fluorine-containing polyimide is prepared first by dianhydride monomer 6FDA, dianhydride monomer 10FEDA and diamine monomer 6FHP through condensation polymerization, and then lambda-shaped heterocyclic azo chromophore and hydroxyl-containing fluorinated polyimide are etherified to obtain the material. The general structural formula is shown as the accompanying drawing, wherein m and ndenote degree of polymerization, the m is within 1-1000 and the n is within 1-1000. NLO denotes the lambda-shaped heterocyclic azo chromophore and the general structural formula is shown as the accompanying drawing.

Approximate isothermal forging method of BT25 two-phase titanium alloy disk forge piece

The invention discloses an approximate isothermal forging method of a BT25 two-phase titanium alloy disk forge piece. The process comprises the following steps of: heating a primary BT25 titanium alloy rod ingot to be below a phase transformation point by 30-75 DEG C and upsetting into a primary cake; heating the primary cake to be above the phase transformation point by 20-60 DEG C and drawing to return to the length of the primary rod ingot to obtain a secondary rod ingot; heating the secondary rod ingot to be below the phase transformation point by 30-75 DEG C, upsetting into a secondary cake and then punching into a ring blank; heating the ring blank to be above the phase transformation point by 20-60 DEG C, heating an upper forging die and a lower forging die to be below the phase transformation point by 10-20 DEG C, wherein the upper forging die and the lower forging die forge the ring blank by using the pressure of 30-60MN to ensure that the deformation of the ring blank in the forging ...

Data-driven method and circuit structure of field emission display

The invention discloses a data-driven method of a field emission display. The method comprises the following steps: static high voltage Va is applied on the positive electrode, line-scanning voltage Vg is applied on the gate electrode; when Vg is positive voltage, the scanned line is selected, when the Vg is zero, the scanned line is out-of-work; a high resistance resistor is added between the negative electrode and the ground wire, wherein the negative electrode has two connection states; and when the negative electrode is directly connected with the ground wire, pixels are in a luminescent state; and when the negative electrode is connected with the ground through a high resistance resistor, the field emission ends and pixels are in nonluminous state. The invention also discloses a circuit structure of the field emission display. In the method of the invention, the high resistance resistor is added after the negative electrode to stop field emission, a simple field-effect transistor is ...

Fluorine-contained polyimide optical waveguide material and method for producing the same

Preparation method of magnetic surface strength laman scattering mark

双共轭体系宽带双光子吸收分子的合成方法

... 双共轭体系宽带双光子吸收分子的合成方法是一种用于宽带双光子吸收的双共轭体系有机化合物的合成，属于非线性光学材料合成的技术领域。将不同吸收波长的两个共轭链通过非共轭的醚链连接在一起，形成具有宽带吸收光能的分子。两个不同吸收波长共轭链二碘化合物2和取代的苯乙烯1在催化剂醋酸钯与三-o-甲苯基膦的作用下，在碱性条件下发生赫克(Heck)反应，生成本发明的一系列化合物I，取代的苯乙烯1与二碘化合物2、醋酸钯、三-o-甲苯基膦的摩尔比为：取代的苯乙烯1∶二碘化合物2∶醋酸钯∶三-o-甲苯基膦＝2∶1∶0.04∶0.2。取代的苯乙烯1是由对应的醛的格氏反应制备的，二碘化合物2是由对苯二酚经过多步反应制得。 ...

Optical gyroscope made from quantum crystal and method for making same

This invention relates to phone crystal wave guiding optical top and its process method, which adopts phone crystal to make light wave guiding, which comprises interference and resonance phone crystal wave guiding top. The interference light wave guiding structure is one open light wave and the resonance wave structure top is one loop wave guiding structure. The process method comprises the following steps: a, forming phone crystal wave guiding structure through leading open ring to the interference phone crystal top; b, resonance phone crystal top.

Symmetrical multiphoton pump luminescent material and preparation thereof

The invention discloses a symmetrical multi-photon pumping fluorescent material and a preparation method thereof. The fluorescent material has the concrete structure of 1, 2, 4, 5- tetra-arylated styrene monomer, and benzene ring is taken as mother nucleus; the positions of 1, 2, 4, 5 are respectively introduced with triphenylamine, carbazole or ramification of the triphenylamine and the carbazole, namely, 1, 2, 4, 5- tetra (dimethoxy phosphor methyl) benzene reacts with 4-N, N-diphenyl-amino-benzaldehyde, 3-formoxyl-9-ethyl carbazole or 4-N, N-divalent (aryl substitution) phenyl-amino-benzaldehyde in N, N-dimethyl formamide solution under the catalysis of potassium tert-butoxide, so that space symmetrical octopole molecule can be obtained; the formed large Pi conjugated system takes the benzene ring as a center to form charge transfer in radialized multi-dimensional multi-direction molecule, has extremely strong fluorescence-emission performance, and the multi-photon pumping fluorescent ...

Wavelength division multiplexer/demodulation multiplexer based on multimode interference effect of two-dimensional photonic crystals

The invention provides a wavelength division multiplexer/demultiplexer based on the multimode interference effect of two-dimensional photonic crystals, comprising a monomode waveguide (1), a multimode interference waveguide (2), a monomode waveguide (3) and a monomode waveguide (4), wherein the monomode waveguide (3) and the monomode waveguide (4) are parallel. The invention confirms the length of the multimode waveguide according to the self-imaging conditions of two preset frequency positions so that after light is input from the monomode waveguide (1) in the two frequency positions, light in one frequency position is imaged on the monomode waveguide (3), and light in the other frequency position is imaged on the monomode waveguide (4) so as to realize the function of a wavelength division demultiplexer. Light with a frequency satisfying an imaging condition is respectively input from the monomode waveguide (3) and the monomode waveguide (4) and output from the monomode waveguide (1) ...

Preparation method of magnetic surface strength laman scattering mark

A method for preparing Roman scattering mark with intensified magnetic surface includes utilizing 2x10-3 M of sodium borate solution and 10-3 M of silver nitrate solution under ice bath condition to obtain magnetic SERS active substrate, selecting chemical molecules with larger Roman scattering sections as SERS report molecules, separating magnetic SERS active substrate labeled with SERS report molecules from solution by centrifugal and adding o.1M of sodium chloride solution as per volume ratio of 3:1-10:1 for obtaining magnetic SERS mark.

Phase inspecting method for phase laser range finder

The invention discloses a phase type laser range finder and a phase detecting method thereof, belonging to the electronic measurement technical field. The phase type laser range finder comprises a signal sampling control module, a first signal amplifying filter module, a second signal amplifying filter module, a scale signal generation module, a laser modulation launching module, a light signal receiving detection module, a signal logarithmic converter, a power module and a display module. The phase detecting method comprises: selecting a system down sampling frequency, finding sampling data length, grouping sampling data, calculating phase shift and distance. The phase type laser range finder adopting the phase detection method can utilize a quartz crystal filter to filer the ranging signals, utilize continuous indirect scale frequency and down sampling technique, and combine sampling and signal processing functions on a chip, having simple structure, high measurement accuracy and low ...

Near-isothermal forging method of TC17 biphase titanium alloy disc forge piece

The present invention discloses a near-isothermal forging method of a TC17 biphase titanium alloy disc forge piece, comprising the steps of: heating a TC17 titanium alloy disposable bar ingot to 30-75 DEG C below a phase change point, upsetting the disposable bar ingot into a disposable circular cake; heating the disposable circular cake to 20-60 DEG C over the phase change point, and drawing out the disposable circular cake till the length thereof returns the length of the disposable bar ingot to obtain a secondary bar ingot; heating the secondary bar ingot to 30-75 DEG C below the phase change point, upsetting the secondary bar ingot to form a secondary circular cake and preheating the spraying lubricant, then punching to form an annular blank; and heating the annular blank to 20-60 DEG C over the phase change point, heating an upper forging mold and a lower forging mold to 10-20 DEG C below the phase change point and spraying the lubricant, and forging and stamping the annular blank ...

Method for manufacturing nano-scale periodic structured photonic crystals

The invention discloses a method for manufacturing nano-scale periodic structured photonic crystals, which comprises the following steps: (1) coating a layer of photo-sensitive resists with a thickness of less than 150 nm on the surface of a sample; (2) vertically fixing a reflector and the sample on a sample platform; (3) selecting the wavelength lambda and incidence angle theta of a laser beam sent to the surface of the sample according to a formula 2dSin theta=n lambda; (4) carrying out first exposure on the sample; (5) carrying out 60-degree or 90-degree rotation on the sample platform on which the sample is fixed, then carrying out second exposure on the sample so as to obtain the pattern of a nano-scale periodic structured triangular lattice or square lattice photonic crystal; and (6) taking down the sample subjected to two exposures from the sample platform, then carrying out development, photographic fixing, baking, and etching standard process engineering on the sample until a ...

Heavy current field emission cathode structure

The invention discloses a heavy current field emission cathode structure. In the structure, a cathode emission area is divided into a plurality of small lattices, and cathode emission points are electrically insulated from one another. Each cathode emission point has a relatively smaller area, so high emission uniformity can be achieved. The heavy current field emission cathode structure can determine the emission current nonuniformity of the field emission cathode lattice by measuring field emission characteristics of each cathode emission point, matches corresponding current limiting resistors at each cathode mission point according to the nonuniformity, and improves the emission current uniformity of the cathode emission lattice by the current limiting resistors corresponding to the emission points so as to obtain heavy emission current.

Optical gyroscope with waveguide construction implemented through organic polymer material and method for preparing same

It is wave-guide structure optical gyro and its process method realized with organic polymer materials and substitutes the traditional wave-guide fiber with the organic polymer materials to manufacture the wave-guide structure optics peg-top, which comprises intervention, and resonance wave-guide structure optics gyro. Its process steps are the following: a to coat the organic polymer materials solvent on the underlay through the rotation cover method and to make single or multiple layers organic polymer thin film; b to make mask plate with metal materials according to the pre-designed ring wave-guide needed; c to make the ring wave-guide by laser etching method or ultra-violet bleaching method to form the wave-guide structure gyro.

Organic polymer optical waveguide resonance ring

Rolling forming process for large hollow disc forging

Near-isothermal forging method of two-phase titanium alloy disk-type forgeable piece

The invention discloses an approximately-isothermal forging method of a two-phase titanium alloy disc-shaped forging piece, which adopts the process that a alloy primary stick ingot is heated to reach 30-75 DEG C below a transformation point and is continuously upset to form a primary round cake; the primary round cake is heated to reach 20-60 DEG C below the transformation point and is drawn outto return to the length of the primary stick ingot, and a secondary stick ingot is obtained; the secondary stick ingot is heated to reach 30-75 DEG C below the transformation point and is continuously upset to form a secondary round cake which is then punched to form an annular blank; the annular blank is heated to reach 20-60 DEG C above the transformation point, an upper forging die and a lowerforging die are heated to reach 10-20 DEG C below the transformation point, the annular blank is forged by the upper forging die and the lower forging die with the pressure of 30-60MN and is molded into ...

Method for restraining florescent lamp ultraviolet radiation

The invention provides a method which can inhibit the fluorescent ultraviolet radiation so as to realize the function of inhibiting the fluorescent ultraviolet radiation and provide service for human health. An ultraviolet absorption material which is transparent in a visible region is externally coated on the fluorescent lamp and is nano ZnO or TiO2 that can completely absorb the radiation of 313nm and 334nm; the absorptivity thereof for the radiation of 365nm is more than 90 percent; and the absorption for the visible light thereof is less than 10 percent. The method for externally coating an ultraviolet absorption material which is transparent in a visible region on the fluorescent lamp comprises the step of making the ultraviolet absorbing material into the thin film which is tightly combined outside the fluorescent lamp by using a sol-gel method.

Aromatic heterocyclic three-photon fluorescent macromolecule and preparation method thereof

The invention provides an aromatic heterocycle three-photon fluorescent macromolecule and a preparation method thereof. The aromatic heterocycle three-photon fluorescent macromolecule contains 2,5-diphenyl oxadiazole and triphenylamine or dibenzofuran, carbazole, dibenzothiophene aromatic heterocyclic radicals. The cavity transmission unit triphenylamine, the dibenzofuran, the carbazole, or the dibenzothiophene is linked with the electronic transmission unit 2,5-diphenyl oxadiazole alternately through carbon-carbon double bonds, thus getting a three-photon fluorescent macromolecule. 3,6-oxazole-dibenzothiophene, or 3,6-oxazole-9-ethyl carbazole or 3,6-oxazole-dibenzothiophene and 1,3,4-oxadiazole radical-2,5- toluylene are adopted for Heck polyreaction, or double(4-formacyl phenyl)aniline and 1,3,4-oxadiazole radical-2,5-dibenzyl brominated triphenyl phosphonium salt are adopted for Witting polyreaction to prepare the aromatic heterocycle three-photon fluorescent macromolecule. The solution ...

Size-selective purification method for salt water phase nanocrystal

The invention discloses a size-selective purification method for a salt water phase nanocrystal and relates to novel technology for purifying a water phase nanocrystal by using salt and the selective separation of water phase nanocrystals with different sizes by a salt purification method. The purification method comprises the following steps of: a, preparing appropriate saline solution; b, purifying the salt water phase nanocrystal; and c, performing size-selective purification on the salt water phase nanocrystal. The invention provides the size-selective purification method for the salt water phase nanocrystal aiming at the problem existing in conventional alcohol nanocrystal purification technology. The method has the advantages of simple operation, extremely low cost and wide application prospect in future nanocrystal industrial mass purification.

Near-isothermal forging method of TC17 biphase titanium alloy disc forge piece

The invention discloses a near-isothermal forging method of a TC17 biphase titanium alloy disc forge piece, comprising the steps of: heating a TC17 titanium alloy disposable bar ingot to 30-75 DEG C below a phase change point, upsetting the disposable bar ingot into a disposable circular cake; heating the disposable circular cake to 20-60 DEG C over the phase change point, and drawing out the disposable circular cake till the length thereof returns the length of the disposable bar ingot to obtain a secondary bar ingot; heating the secondary bar ingot to 30-75 DEG C below the phase change point, upsetting the secondary bar ingot to form a secondary circular cake, then punching to form an annular blank; and heating the annular blank to 20-60 DEG C over the phase change point, heating an upper forging mold and a lower forging mold to 10-20 DEG C below the phase change point, and forging and stamping the annular blank by the upper forging mold and the lower forging mold under the pressure of ...

Polymer waveguide tight switch array based on array waveguide grating structure

Preparation method of fluorescent probe used for detecting divalent manganese ion and divalent manganese ion detection method

The invention discloses a preparation method of a fluorescent probe used for detecting a divalent manganese ion and a divalent manganese ion detection method. The preparation method of a fluorescent probe used for detecting a divalent manganese ion comprises the following specific steps of: a) preparation of a CdTe quantum dot: preparing the CdTe quantum dot by reaction of CdCl2 and NaHTe by taking hydrosulphonyl glycerin as the quantum dot, wherein the CdCl2 reacts with and NaHTe to produce CdTe, NaCl and HCl; b) preparation of the fluorescent probe solution of the CdTe quantum dot: decentralizing the CdTe quantum dot by isopropanol through decentralization; and depositing and scattering the quantum dots obtained by decentralization to buffer solution with the pH value of more than 9.0 to prepare the quantum dot fluorescent probe solution. The divalent manganese ion detection method is characterized in that the quantum dot adopting hydrosulphonyl glycerin CH2OHCHOHCH2SH as a ligand is ...

Fluorine-contained polyimide optical waveguide material and method for producing the same

The invention provides a fluorine-containing polyimide optical waveguide material and the preparing method thereof relating to the integrating polymer material preparing method in optical device, which can be applied in waveguide optics device, the material is obtained from condensation and copolymerization of three monomers, that is the fluorine-containing polyimide is condensed and copolymerized from two diamine monomers and one dianlydride monomer or from two diamine monomers and one dianlydride monomer, after purification, the fluorine-containing polyimide n-methyl-2-pyrrolidone solution is obtained, and is then dropped on center of clean substrate for spin coating to form film, and desiccation and curing. The glass transition temperature of the material is above 200 DEG C, in the field of optical communication on 1550nm the optical loss is less than 0.6dB/cm, the refractive index on 1550nm is 1.5-1.6.

Data-driven method and circuit structure of field emission display

The invention discloses a data-driven method of a field emission display. The method comprises the following steps: static high voltage Va is applied on the positive electrode, line-scanning voltage Vg is applied on the gate electrode; when Vg is positive voltage, the scanned line is selected, when the Vg is zero, the scanned line is out-of-work; a high resistance resistor is added between the negative electrode and the ground wire, wherein the negative electrode has two connection states; and when the negative electrode is directly connected with the ground wire, pixels are in a luminescent state; and when the negative electrode is connected with the ground through a high resistance resistor, the field emission ends and pixels are in nonluminous state. The invention also discloses a circuit structure of the field emission display. In the method of the invention, the high resistance resistor is added after the negative electrode to stop field emission, a simple field-effect transistor is ...

Fluid-solid coupled light deflection detection device

The invention relates to a fluid-solid coupled light deflection detection device which is used for measuring laser ultrasonic waves on a fluid-solid interface. The fluid-solid coupled light deflection detection device comprises a pulse laser, a spectroscope, an electronic control translation frame, a prism, a cylindrical convex lens, a solid material, a transparent container, a photodiode, a digital oscilloscope and an electronic computer. The fluid-solid coupled light deflection detection device is characterized in that a receiving sensor comprises an He-Ne laser, a focusing lens and a position sensor, wherein a detection light beam emitted from the He-Ne laser passes through the surface of the solid material in parallel to the cylindrical convex lens and is focused to the position sensor by the focusing lens; the output end of the position sensor is connected with the receiving end of the digital oscilloscope; and the prism and the cylindrical convex lens are fixed on the electronic control ...

Prism type vertical cavity surface emitting laser

Approximate isothermal forging method of BT25 two-phase titanium alloy disk forge piece

The present invention discloses an approximate isothermal forging method of a BT25 two-phase titanium alloy disk forge piece. The process comprises the following steps of: heating a primary BT25 titanium alloy rod ingot to be below a phase transformation point by 30-75 DEG C and upsetting into a primary cake; heating the primary cake to be above the phase transformation point by 20-60 DEG C and drawing to return to the length of the primary rod ingot to obtain a secondary rod ingot; heating the secondary rod ingot to be below the phase transformation point by 30-75 DEG C, upsetting into a secondary cake and then punching into a ring blank and preheating spraying lubricant; heating the ring blank to be above the phase transformation point by 20-60 DEG C, heating an upper forging die and a lower forging die to be below the phase transformation point by 10-20 DEG C and spraying lubricant, wherein the upper forging die and the lower forging die forge the ring blank by using the pressure of ...

Detecting system of superficial defects of small-size materials

The invention discloses a detecting system of superficial defects of small-size materials, comprising a pulse laser, a beam splitter, a cylindrical convex lens, a receiving sensor, a high-precision time delay device and an electronic computer, wherein the beam splitter is arranged in front of the pulse laser; the laser beams emitted by the pulse laser are split into two beams by the beam splitter, one of the two beams is focused by the cylindrical convex lens and enters into the surfaces of the materials to be detected and the other one of the two beams enters into the high-precision time delay device; the output end of the high-precision time delay device is connected with the input end of the receiving sensor; the high-precision time delay device delays for a while after receiving lasersignals and then outputs electrical signals as the trigger signals of the receiving sensor; and the receiving sensor begins to detect the ultrasonic signals propagated on the materials to be detectedafter ...

Multi-branched oxdiazole two-photon pump fluorescent material and preparation method thereof

The present invention is multiramose double photon pumped fluorescent oxdiazole material and its preparation process. The oxdiazole material is prepared with polycyclic arene bromide and 3, 5-bis{2-(4-tertiary butyl phenyl)-5-[1, 3, 4]-oxdiazolyl}-styrene or 2-(4-tertiary butyl phenyl)-5-[1, 3, 4]-oxdiazolyl-styrene, and through Heck reaction inside mixed solvent of triethylamine and N, N-dimethyl formamide catalyst under the action of catalyst palladium acetate and tri-o-methylphenyl phosphide; or prepared with triphenylamido aromatic aldehyde derivative and benzyl bromo triphenyl phosphine containing [1, 3, 4]-oxdiazole structure, and through solid and liquid Wittig reaction. The oxdiazole material possesses sufficient double photon absorption cross section, high double photon fluorescence efficiency and high heat stability, and can emit strong double photon up converted green and blue fluorescence under the excitation of 800 nm laser beam.

Method for preparing water phase non-toxic quantum dot zinc telluride

The invention provides a method for preparing water-phase non-toxic quantum dot zinc telluride. The preparation method comprises the following steps: a, NaHTe preparation: sodium borohydride is dissolved in deionized water, tellurium powder is quickly added into the solution, and a reactor is sealed by a rubber plug which is provided with a pin hole to be communicated with the outside for releasing hydrogen generated in reaction; in the reacting process, the system is cooled by ice-water bath, after several hours, the black tellurium powder disappears, white sodium borate is generated, and upper clear NaHTe solution is light purple; b, preparation of Zn+TGA thioglycolic acid precursor: Zn(NO3)2 is added to a conical flask, a certain amount of TGA is added to the solution by a miniature pipetting gun, pH of the mixed solution of the Zn(NO3)2 and the TGA is adjusted by NaOH after sufficient stirring, the solution is kept for later use after sufficient stirring; and c, preparation of water ...

Fluorine-containing polyimide electro-optical material and preparation method thereof

The invention relates to a fluorine-containing polyimide electro-optical material, which has high nonlinear optical response, high thermal stability, low optical transmission loss and good film forming property. Fluorine-containing polyimide is prepared first by dianhydride monomer 6FDA, dianhydride monomer 10FEDA and diamine monomer 6FHP through condensation polymerization, and then lambda-shaped heterocyclic azo chromophore and hydroxyl-containing fluorinated polyimide are etherified to obtain the material. The general structural formula is shown as the accompanying drawing, wherein m and n denote degree of polymerization, the m is within 1-1000 and the n is within 1-1000. NLO denotes the lambda-shaped heterocyclic azo chromophore and the general structural formula is shown as the accompanying drawing.

Ceramics seal handicraft article

A ceramic seal handicraft article is provided, which is produced by adopting the following raw materials and steps: firstly, lofting, a seal is enlarged pro rata; secondly, form overlaying, the enlarged seal is duplicated on a ceramic mud plate; thirdly, glazing, the ceramic mud plate is aired for 2-5 days, applied with color and glazed; fourthly, firing, the ceramic mud plate applied with enamel is placed in a baking kiln to be baked for 5-24 hours to obtain a semi-finished product, and the baking temperature is 800-1200 DEG C; fifthly, mounting, the ceramic seal semi-finished product is taken out of the kiln and mounted in conventional mounting mode to obtain a finished product. As the seal is a characteristic in China, the ceramic seal becomes a unique decorative artwork, thereby the present invention strengthens the tightness of carving and life, improves the aesthetic taste of people, gradually becomes the decoration of homes and offices, and gradually develops into a good choice as ...

Reflection-type separated Raman fibre amplifier

It is a reflection discrete Raman light fiber amplifier, which is a light amplifier and comprises the following: pump unit 1, light ring device 2, light couple 3, gain light fiber 4 and light separator. The output end of the pump unit is connected with input end of light separator; the output end of the light separator is connected with the input end of light couple; the input end of signal light is connected with first end of the light ring device; the output end of signal light is connected with second end of light ring device; the third end of the light ring device is connected with input end of light couple; the output end of light couple is connected with gain light fiber which is a double-layer fiber with one end coated with metal film and comprises fiber core, inner layer and outer layer and its reflection ratio changes as that of core fiber is larger than inner layer and that of inner layer is larger than outer layer.

Manufacturing method of apodization Bragg optical fibre grating having no selfcausing twitter effect

The phase mask plate with cycle length being changed gradually is made. The cycle length in the center of the phase mask plate is little bit smaller than the cycle in the edge part. Base on the wavelength of ultraviolet light, the depth of the tooth space on the phase mask plate is determined. The ultraviolet photosensitive optical fiber leans against the face with the tooth space, keepnig parallel and relative still to the mask plate. Finally, the ultraviolet light perpendicular to the phase mask plate is directed to the back of the mask plate, scanning the optical fiber. The optical fiber grating made by use of the invented method eliminates the self-generating chatter effect caused by the toe cutting of refractive index.

Manufacturing method of apodization Bragg optical fibre grating having no selfcausing chirp effect

Preparation method of function surface strength laman scattering probe

A method for preparing functional Roman scattering probe with intensified surface includes mixing 10-5 M of sensitive material using (-NH2) as PH sensitive group with silver glue solution in volume ratio of 3:1000-300:1000 uniformly then adding o.1M of sodium chloride solution in as per volume ratio of 3:1-10:1 for obtaining functional Roman scattering probe in size of 20-50nm with intensified surface.

Preparation method of quantum dot nano material and method for coating silicon dioxide on surface of quantum dot nano material

The invention relates to a preparation method of a quantum dot nano material and a method for coating silicon dioxide on the surface of the quantum dot nano material. The preparation method of the quantum dot nano material comprises the following steps: (1) preparing ZnSe quantum dots; and (2) taking the ZnSe quantum dots obtained in the step (1), adding oleylamine and octadecene (ODE), heating to 120 DEG C in an argon atmosphere, injecting MnSt2/ODE, heating to 270-280 DEG C after the materials become stable, keeping for 5-6 minutes, injecting Se/TBP (tributyl phosphine), keeping the temperature for 5-6 minutes, injecting ZnSt2/ODE, and reacting for 20-25 minutes to obtain the quantum dot nano material. The method for coating silicon dioxide on the surface of the quantum dot nano material made by the preparation method comprises the following steps: (1) dissolving the purified quantum dot nano material in normal hexane, and hydrolyzing with mercaptopropionic acid to obtain a quantum dot ...

Method for regulating laser emission of gain medium under all-optical control

The invention discloses a method for regulating the laser emission of a gain medium under all-optical control, which comprises the following steps of: first irradiating a carrier with random mediums by using infrared light beams with the wavelength of lambda2 or green light beams with the wavelength of lambda3; then emitting pump light (1) with the wavelength of lambda1 from a laser, converging the pump light to form stripes by using a cylindrical lens, making the stripes incident onto the carrier, arranging a detector on the bottom edge of the carrier to receive laser emitted from the carrier, and arranging a device for adjusting the energy of the pump light at the front end of the cylindrical lens; and finally prolonging the irradiation time of the red light beams (5) or improving the irradiation intensity of the red light beams (5) to improve the intensity of stimulated emitted light (7), or prolonging the irradiation time of the green light beams (6) or improving the irradiation intensity ...

Roll forming method of large and medium aluminum alloy solid disk forging

The invention discloses a roll forming method of a large and medium aluminum alloy solid disk forging, which comprises the following steps of: firstly upsetting aluminum alloy bar materials, profiling into a solid disk blank; and rolling the disk blank in a rolling machine; when rolling within 20s, expanding the disk blank at a speed of 9-12mm/s under a 4000-4900KN axial rolling force with an axial feed speed of 1.9mm/s; when rolling in the time range of 20-40s, expanding the disk blank at a speed of 8-10mm/s under a 3000-3500KN axial rolling force with an axial feed speed of 0.9mm/s; and when rolling within the time range of 40-70s, expanding the disk blank at a speed of 5-8mm/s under a 2500-3000KN axial rolling force with an axial feed speed of 0.5mm/s; and finally rolling into the solid disk forging one one-grade fire. The method is mainly used for rolling the disk forging with excellent shape, dimension, organization and performance.

Method for regulating laser emission of gain medium under all-optical control

The invention discloses a method for regulating the laser emission of a gain medium under all-optical control, which comprises the following steps of: first irradiating a carrier with random mediums by using infrared light beams with the wavelength of lambda2 or green light beams with the wavelength of lambda3; then emitting pump light (1) with the wavelength of lambda1 from a laser, converging the pump light to form stripes by using a cylindrical lens, making the stripes incident onto the carrier, arranging a detector on the bottom edge of the carrier to receive laser emitted from the carrier, and arranging a device for adjusting the energy of the pump light at the front end of the cylindrical lens; and finally prolonging the irradiation time of the red light beams (5) or improving the irradiation intensity of the red light beams (5) to improve the intensity of stimulated emitted light (7), or prolonging the irradiation time of the green light beams (6) or improving the irradiation intensity ...

Composite structure of fibre optical Bragg grating temperature sensor and producing method thereof

A transducer composite structure is composed of metal sleeve, optical fibre cladding layer and optical fibre core with Bragg grating. it is featured as using epoxy resin to connect optical fibre cladding layer with sleeve, reducing sectional area of partial optical fibre cladding layer containing Bragg grating to be micro times of original one as 0 Подробнее

Method for rolling and shaping aluminum alloy conical ring

The invention discloses a rolling and shaping method for an aluminum alloy conical ring forging in order to obtain the alloy conical ring forgings with excellent tissues and properties as well as realize accurate rolling. The method includes the following steps: alloy bar material is heated, carried out continuous upsetting and deformed by 65 to 70 percent so as to be made into a solid cake and then is punched again to lead the alloy bar material to be made into a hollow round cake after the aperture dimension of the alloy bar material is 35 to 40 percent of the dimension of the outer diameter thereof; a rectangle ring blank is obtained after the hollow round cake is heated and deformed by 35 to 40 percent by a sweeping tackle reaming hole; the ring blank is heated and arranged into an expansion mould to be made into a conical pre-rolling blank after being deformed by 10 t0 15 percent; the conical pre-rolling blank is heated and arranged in a rolling die of a ring rolling machine and forms ...

Preparation method of surface-enhanced Raman scattering probe

The invention provides a preparation method of a surface-enhanced Raman scattering probe, relating to a preparation method of a silver nano aggregation probe which has high surface-enhanced Raman scattering activity and is coated by polyvinylpyrrolidone, as well as applications thereof in regulation of aggregation degree of silver nano particles and SERS detection in cells. The method selects silver colloid solution as a raw material, selects sodium chloride as an aggregation agent, and coats the polyvinylpyrrolidone on the surface of silver aggregates; and specifically comprises the following steps: evenly mixing Raman markers and the silver colloid solution according to volume ratio of 1: 1000 to 1:100 under the stirring condition, then adding sodium chloride solution to aggregate the silver colloid solution mixed with the Raman markers into aggregates with two to five particles, finally adding the polyvinylpyrrolidone solution, continuously stirring for 5 to 15 minutes, filtering the ...

Method for rolling and shaping stainless steel special-shaped ring forging

The invention discloses a rolling and shaping method for a stainless steel heterotypic ring forging in order to obtain the alloy heterotypic ring forgings with excellent tissues and properties as well as realize accurate rolling. The method includes the following steps: alloy bar material is heated, carried out continuous upsetting and deformed by 50 to 55 percent, so as to be made into a solid cake and then is punched again to lead the alloy bar material to be made into a hollow round cake after the aperture dimension of the alloy bar material is 30 to 35 percent of the dimension of the outer diameter thereof; a rectangle pre-rolling blank is obtained after the hollow round cake is heated, rolled circularly and deformed by 40 to 45 percent; the pre-rolling blank is heated and arranged in a rolling die of a ring rolling machine and forms a heterotypic ring forging after being rolled and deformed by 50 to 55 percent in a section groove. When in expansion, the broadening speed of the pre-rolling ...

Process for synthesizing broad-band double-photon absorbing molecule in dual-conjugation system

A process for synthesizing the bi-conjugated organic compound as non-linear optical material used for broad-band dual-photon absorption is characterized by the Heck reaction of the diiodine compound having two conjugated chains having different absorptive wavelengthes with substituted styrene in the presence of catalyst (palladium acetate and tri-o-tolylphosphine) in alkaline condition to obtain said product. Said diiodine compound is prepared from hydroquinone through multi-step reaction.

Near-isothermal forging method of two-phase titanium alloy disk-type forgeable piece

The invention discloses an approximately-isothermal forging method of a two-phase titanium alloy disc-shaped forging piece, which adopts the process that a alloy primary stick ingot is heated to reach 30-75 DEG C below a transformation point and is continuously upset to form a primary round cake; the primary round cake is heated to reach 20-60 DEG C below the transformation point and is drawn out to return to the length of the primary stick ingot, and a secondary stick ingot is obtained; the secondary stick ingot is heated to reach 30-75 DEG C below the transformation point and is continuously upset to form a secondary round cake which is then punched to form an annular blank; the annular blank is heated to reach 20-60 DEG C above the transformation point, an upper forging die and a lower forging die are heated to reach 10-20 DEG C below the transformation point, the annular blank is forged by the upper forging die and the lower forging die with the pressure of 30-60MN and is molded into ...

Method for rolling and shaping structural steel high cylindrical ring forged piece

The invention discloses a method for rolling and shaping a structural steel high cylindrical ring forged piece. The method is used for rolling and shaping the high cylindrical ring with thin wall and excellent texture and performances. The technical scheme is as follows: firstly sheathing a preheated follow-up die sleeve and a structural steel pre-rolled billet which is heated to the deformation temperature into a ring rolling mill, and positioning two workpieces through a main roller, a core roller, holding rollers, an upper conical roller and a lower conical roller of the ring rolling mill; and further starting the ring rolling mill, enabling the core roller to do feed motion to the main roller along the radial direction, rolling the pre-rolled billet in the follow-up die sleeve by 180KN-3800KN rolling force together with the main roller, enabling the pre-rolled billet to expand the width along the radial direction at the speed of 6mm/s-15mm/s and gradually reduce the wall thickness, ...

Low-crosstalk organic polymer waveguide optical switch

The invention discloses a low-crosstalk organic polymer waveguide switch and relates to a low-crosstalk termooptical waveguide switch device. All waveguide structures are embedded in a cladding (18). The input end of a Mach-Zehnder interference waveguide structure (12) is connected with the output end of an input waveguide (11). Two output ends of the Mach-Zehnder interference waveguide structure (12) are connected with the input end of an output waveguide (13) and the input end of an output waveguide (14) respectively. The top of the Mach-Zehnder interference waveguide structure (12) is provided with a first metal membrane thermode (15). The top of the output waveguide (13) is provided with a second metal membrane thermode (16). The top of the output waveguide (14) is provided with a third metal membrane thermode (17). The device controls the first metal membrane thermode (15) and the second metal membrane thermode (16) through current respectively or controls the first metal membrane ...