Oiling device for nut cold heading forming equipment

The utility model provides an oiling device for nut cold heading forming equipment. The oiling device for the nut cold heading forming equipment comprises a base; the bottom of the storage assembly is fixedly connected to the top of the base; the bottom of the oiling assembly is fixedly connected to the top of the storage assembly; and the left side of the driving assembly is fixedly connected to the right side of the oiling assembly. According to the oiling device for the nut cold heading forming equipment, due to the fact that the base, the storage assembly and the oiling assembly are used in a matched mode, solidification of cold heading oil is effectively prevented, and meanwhile the situation that cold heading oil is used up and a worker does not know the situation is avoided in the oiling process; the nut forming quality cannot be affected in the machining process, quantitative oiling of the device is achieved through cooperative use of the oiling assembly and the driving assembly ...

Road disease evolution recognition model test device and method

The invention belongs to the technical field of traffic transportation, and discloses a road disease evolution recognition model test device and method, which are applied to road disease evolution recognition under the action of multi-field environment coupling. The system is composed of a disease type simulation module, a disease development process simulation module, a monitoring module and a bearing structure module. According to section forms of different roadbeds, similar materials are adopted to simulate a roadbed multi-layer composite structure, and through simulation of cavity arrangement, incompact filling, mud pumping, stratigraphic fluctuation and other types of diseases in the roadbed, environmental factors such as traffic load, rainfall, underground water change and stratigraphic structure are coupled, so that the multi-layer composite structure of the roadbed is simulated. The development process of the diseases is detected, tracked and observed, the deformation and stress ...

Welding clamping device

A welding clamping device includes a base plate and two positioning slide blocks, each of the positioning slide blocks includes a slide base and a cam, wherein the slide base includes a support plate and two cam holders fixed at two opposite ends of the support plate; the cam is rotatably mounted between the two cam holders via a camshaft for press-fitting a workpiece to be welded; and the base plate is provided with a slide slot, and the two positioning slide blocks are relatively slidably mounted in the slide slot. The device can better position a workpiece to be welded, improving welding quality; and clamping and unloading are easy and take a short time, improving welding efficiency.

Data analysis method and device, electronic equipment and storage medium

The invention discloses a data analysis method and device, electronic equipment and a storage medium. The method comprises the following steps: receiving a CAN message; the received CAN messages are classified according to CAN message IDs stored in all preset first structural bodies, and message packets in one-to-one correspondence with all functional modules of the vehicle are obtained; wherein the CAN message ID stored in each first structure body is determined according to the CAN message ID required by the function module of the vehicle; determining an analysis parameter of each CAN message in the message packet according to an analysis parameter stored in each preset second structure body; wherein the analysis parameters stored in the preset second structural bodies are obtained by analyzing a DBC file associated with the vehicle; and analyzing the CAN message in the message packet based on the analysis parameter to obtain an analysis result. According to the method, the data analysis ...

Superplastic welding experimental device and method by utilizing electric field action

The invention relates to a superplastic welding experimental device which belongs to the technical field of material processing. The superplastic welding experimental device comprises a high-voltage power system, an electric field applying device, a welding heating and temperature control system and a loading and data acquisition system, wherein the high-voltage power system is used for providing stable voltage; the electric field applying device is used for enabling samples or specimens to be welded to be in a uniform and stable electric field with adjustable atmosphere; the welding heating and temperature control system is used for ensuring the samples or the specimens to be at a given welding temperature; and the loading and data acquisition system is used for realizing that the samples or the specimens is loaded in a deformation speed range of 0.02-100mm/min and the full welding process can be automatically detected. By utilizing the invention, real time tracking recording and data ...

High field high-temperature compression test device and method of solid materials

The invention relates to a high field high-temperature compression test device of solid materials, which comprises a stable high-voltage power source system used for providing various types of voltage, an electric field applying device used for making a test sample or test specimen (2) positioned in a uniform stable strong electric field, a heating and temperature control system used for ensuringthe test sample or test specimen at a given temperature, and a loading and data acquiring system which loads the test sample or test specimen within the deformation velocity range of 0.02-100mm/min and can automatically detect the whole process of compression deformation. The invention can test the characteristic of high-temperature compression deformation of the materials in strong electric field environment, and related material shaping and processing technology is developed and seared on the basis, and real-time tracking, recording, data processing and display are carried out to the whole process ...

Multifunctional high-voltage power supply

The invention belongs to the technical field of special power supplies, and discloses a multifunctional high-voltage power supply, which comprises a transformation circuit, a rectifying filter circuit, a safety protection circuit and a detection display circuit, wherein one end of a secondary edge of a set-up transformer (T2) of the transformation circuit is connected with a current meter of the detection display circuit and then is ground, while the other end serves as an alternating current high-voltage output end of the multifunctional high-voltage power supply; and a high-voltage output end of the transformation circuit is connected with a positive electrode of a high-voltage silicon stack (D1) of the rectifying filter circuit and is connected with a negative electrode of a high-voltage silicon stack (D2), the negative electrode of the high-voltage silicon stack (D1) serves as a positive direct current high-voltage output end of the multifunctional high-voltage power supply, and apositive ...

Multifunctional high-voltage power supply

The invention belongs to the technical field of special power supplies, and discloses a multifunctional high-voltage power supply, which comprises a transformation circuit, a rectifying filter circuit, a safety protection circuit and a detection display circuit, wherein one end of a secondary edge of a set-up transformer (T2) of the transformation circuit is connected with a current meter of the detection display circuit and then is ground, while the other end serves as an alternating current high-voltage output end of the multifunctional high-voltage power supply; and a high-voltage output end of the transformation circuit is connected with a positive electrode of a high-voltage silicon stack (D1) of the rectifying filter circuit and is connected with a negative electrode of a high-voltage silicon stack (D2), the negative electrode of the high-voltage silicon stack (D1) serves as a positive direct current high-voltage output end of the multifunctional high-voltage power supply, and a positive ...

Design method for widening curves in accordance with full trailer wheel route derivation and drift

The invention belongs to the technical field of port road design, in particular to a design method for widening curves in accordance with full trailer wheel route derivation and drift, comprising the following steps: selecting a full trailer; setting conditions that sideslip does not occur to the trailer; setting a drift angle of a semi-trailer when the drift of the trailer takes place; determining a calculation method for calculating a break angle theta of a tractor and the semi-trailer; setting occupied width of the trailer on a road surface when the sideslip and other accidents do not occur to the trailer; setting occupied lane width when the drift of the vehicle happens; adopting the parameters to establish a simulated cellular automata model of traffic; and performing simulation experimental analysis and selecting proper super-elevation. In the method of the invention, by quantizing impact factors related to the super-elevation, the optimum curve width can be obtained under the linear ...

Design method for widening curves in accordance with full trailer wheel route derivation and drift

The invention belongs to the technical field of port road design, in particular to a design method for widening curves in accordance with full trailer wheel route derivation and drift, comprising the following steps: selecting a full trailer; setting conditions that sideslip does not occur to the trailer; setting a drift angle of a semi-trailer when the drift of the trailer takes place; determining a calculation method for calculating a break angle theta of a tractor and the semi-trailer; setting occupied width of the trailer on a road surface when the sideslip and other accidents do not occur to the trailer; setting occupied lane width when the drift of the vehicle happens; adopting the parameters to establish a simulated cellular automata model of traffic; and performing simulation experimental analysis and selecting proper super-elevation. In the method of the invention, by quantizing impact factors related to the super-elevation, the optimum curve width can be obtained under the linear ...

Forecasting method for port area short-time traffic flow under model of reservation cargo concentration in port

The invention discloses a forecasting method for a port area short-time traffic flow under a model of reservation cargo concentration in port, which belongs to the technical field of port area traffic management. The method comprises the following steps of: dividing traffic generation regions and attract regions, and obtaining the sub-period distribution rule of historical traffic in various traffic generation regions and attract regions; determining the traffic attract regions and the traffic volume; determining the corresponding back storage yards, obtaining the distribution of the traffic generation regions and the traffic volume; determining the relevant section at the upstream of the forecast road section according to the extension length at the opposite direction of the upstream-road traffic flow of the forecast road section in forecast periods; establishing a knowledge base; measuring the turn rate for the upstream/downstream road sections in each forecast period in real time; extracting ...

Ramp turn superelevation design method with consideration of drifting of heavy-duty trailer

The invention belongs to the technical field of port road design, in particular relates to a Ramp turn supperelcvation design method with the consideration of the driving characteristic of a heavy-duty trailer. The method comprises the following steps of: selecting a heavy-duty trailer; setting the condition for preventing the side slipping of the trailer; setting a drifting angle of a semitrailer into the formula shown in the specification of the invention when a drifting phenomenon happens; setting the occupation width of the trailer on the road when the trailer does not have accidents, such as side slipping, and the like; setting occupied lane width when the drifting accident happens; establishing a traffic flow imitation cellular automaton model on the basis of the parameters; establishing a comprehensive evaluation index of superelevation; and carrying out imitation test analysis and selecting proper superelevation. In the invention, an optimal superelevation value under specific road ...

Road alignment safe checking method based on driving simulation technology

The invention provides a road alignment safe checking method based on a driving simulation technology. A road alignment safe checking and evaluation index based on the driving simulation technology comprises two aspects including driving behavior parameters and vehicle operation parameters; a secondary index is obtained based on ANOVA and Pearson methods; and a road alignment safe checking and evaluation system is constructed by using a fuzzy analytic net process (F-ANP). According to the method, the road alignment safe checking and evaluation system based on the driving simulation technology is established, and the characteristics of driver factors are considered; and the requirements of pre-evaluating road safety at a road primary design phase are met, and an unconstructed road is evaluated in advance.

Welding clamping device

The invention relates to the technical field of auxiliary welding equipment and discloses a welding clamping device. The welding clamping device comprises a soleplate and two positioning sliding blocks, wherein each positioning sliding block comprises a sliding seat and a cam, and the sliding seat comprises a supporting plate and two cam frames which are fixedly arranged at the two opposite ends of the supporting plate; the cam is rotatably installed between the two cam frames through a cam shaft and is used for pressing a workpiece to be welded; the soleplate is provided with a sliding slot, and the two positioning sliding blocks are oppositely and slidably installed in the sliding slot. According to the welding clamping device, two workpieces to be welded can be clamped, and the workpieces to be welded are better positioned, so that the welding quality is improved; the welding clamping device has the advantages of easiness in clamping and unloading, no need of repeatedly screwing bolts ...

Tapping machine for nut machining

The utility model provides a tapping machine for nut machining. The rotating structure is arranged at the top of the machine base; the tapping structures are arranged on the two sides of the top of the machine base; wherein the rotating disc structure is fixedly connected to the top of the rotating structure, the rotating disc is fixedly connected to the top of the rotating structure, a fixed block is fixedly connected to the top of the rotating disc, a threaded block is fixedly connected to the left side of the top of the fixed block, and a sliding block is slidably connected to the right side of the top of the fixed block. The tapping machine for nut machining is provided with the special rotating disc structure, a plurality of part blanks can be fixed in position at the same time, the part blanks can be tapped, the positions of the part blanks can be conveniently calibrated after the part blanks are fixed, and the probability of defective parts is greatly reduced.

WELDING CLAMPING DEVICE

A welding clamping device includes a base plate and two positioning slide blocks, each of the positioning slide blocks includes a slide base and a cam, wherein the slide base includes a support plate and two cam holders fixed at two opposite ends of the support plate; the cam is rotatably mounted between the two cam holders via a camshaft for press-fitting a workpiece to be welded; and the base plate is provided with a slide slot, and the two positioning slide blocks are relatively slidably mounted in the slide slot. The device can better position a workpiece to be welded, improving welding quality; and clamping and unloading are easy and take a short time, improving welding efficiency. 1. A welding clamping device , comprising a base plate and two positioning sliding blocks; wherein each of the positioning sliding blocks comprises a sliding seat and a cam , the sliding seat comprises a support plate , and two cam holders arranged opposite to each other and fixed at two ends of the support plate; the cam is rotatably installed between the two cam holders via a camshaft and is configured to press fit a work piece to be welded; the base plate is provided with a slide slot , and the two positioning sliding blocks are slidably installed in the slide slot.2. The welding clamping device according to claim 1 , further comprising an electrode contact fixed on the base plate.3. The welding clamping device according to claim 1 , wherein each of the positioning sliding blocks further comprises a ratchet and a pawl claim 1 , the ratchet is fixed at an end of the camshaft claim 1 , and the pawl is rotatably installed on the respective cam holder and configured to lock the ratchet.4. The welding clamping device according to claim 1 , further comprising a plurality of interference adjusting plates claim 1 , wherein thicknesses of the plurality of interference adjusting plates are not all the same claim 1 , and the interference adjusting plates are configured to be installed ...

Granule carbonide reinforced ferritic steel and preparation method thereof

Concrete settling pier with cross-sectional measuring tube

The invention relates to a device in monitoring of civil engineering, and particularly relates to a concrete settling pier with a cross-sectional measuring tube, which is applicable to measurement on profile settling volume of expressway and railroad beds. The concrete settling pier with a cross-sectional measuring tube comprises a concrete pier body and a connecting pipe, wherein the connecting pipe is arranged at the center of a cross section in the concrete pier body, and one end of the measuring tube extends out of the concrete pier body. The concrete settling pier with a cross-sectional measuring tube, provided by the invention can be conveniently connected with an inbuilt cross-sectional tube, the inbuilt cross-sectional tube can be effectively protected, and the survival rate and the measuring precision of the instrument can be improved. Caste-in-place in convenient, protection on the tube head and improvement of the measuring precision are facilitated, and the survival rate of the ...

Multi-axis movement device suitable for anisotropic material X-ray diffraction

The invention discloses a multi-axis movement device suitable for X-ray diffraction of anisotropic materials. The device is mainly composed of a ground seat module, a tilting module, a rotating module, a lifting module and two translation modules, the tilting module can make a test sample tilt around a diffraction center point, the rotating module can make the test sample rotate around the central axis of the device, and the lifting module can make the test sample move in the Z-axis direction. A five-degree-of-freedom motion device is formed on the whole, the five-degree-of-freedom modules are cooperatively controlled through a deep learning algorithm, it can be guaranteed that multi-angle X-ray diffraction testing is conducted on any area of a test sample, and X-ray diffraction peak signals of different areas and different crystal faces of anisotropic materials are rapidly obtained. The multi-axis movement device has the characteristics of simplicity, easiness in operation, multiple degrees ...

DBSCAN-based single-crystal alloy diffraction data noise elimination method

The invention discloses a single crystal alloy diffraction data noise elimination method based on DBSCAN. According to the invention, the method comprises the following steps: converting a single crystal alloy XRD diffraction image into a diffraction intensity scatter distribution diagram so as to retain signal diffraction intensity; a density clustering method (DBSCAN) is utilized to separate diffraction pattern signals from noise, and uncertainty influence caused by noise components is reduced; the method comprises the following steps: integrating separated diffraction pattern signals on a chi angle, fitting by using a Gaussian function, combining fitting results to generate an XRD diagram, obtaining a diffraction peak position, and carrying out self-learning and density clustering on single crystal material diffraction peak signal characteristics by using an intelligent algorithm to realize separation of single crystal alloy 2D-XRD diffraction signals and noise and accurate noise elimination ...

Special container for transporting large -scale medical equipment

The utility model provides a special container for transporting large -scale medical equipment, the utility model provides a: a special container for transporting large -scale medical equipment, which comprises a case body, the side door, two -way refrigerating unit, front end at the box is equipped with two -way refrigerating unit, two -way refrigerating unit is split type, the condenser is installed at the box outsidely, built -in evaporimeter is installed before the box is inside on the board of railway carriage or compartment, blow in cold wind or hot -blast to the incasement, two -way refrigerating unit is driven by generating set, the box is equipped with two -layer covering, be equipped with the heat preservation between the ectonexine covering, side at the box is equipped with the side door, be equipped with the activity stull above the side door, be equipped with the top access & exit at the top of box, be equipped with movable panel on the access & exit of top. The utility model ...

Real-time cutter detection device

The invention relates to the technical field of machining, particularly to a real-time cutter detection device. A support rod is fixed on a base of the real-time cutter detection device, and a tool clamping mechanism and a cutter clamping mechanism are rotationally connected onto the support rod and capable of moving in the axial direction of the support rod. According to the real-time cutter detection device, through the rotation or movement of the tool clamping mechanism and the cutter clamping mechanism, detection tools such as a handheld microscope and the like can be fixed conveniently, and detection positions can be recorded easily when cutting edges of cutters are detected, so that the device can be easily adjusted to appropriate positions for detection when identical parts of the cutting edges of the cutters or cutting edges of other cutters in the same types are detected next time, and the time is saved.

Vehicle body composite coating and design method thereof

A vehicle body composite coating, comprising, in succession, a polyurethane finishing coat, a polyurethane intermediate layer, a polyester putty and a micro-arc oxidation ceramic layer undercoat, wherein the micro-arc oxidation ceramic layer undercoat is on an aluminium substrate of the vehicle body. The design method of the vehicle body composite coating includes establishment of a physical model, selection of an optimal thickness ratio, preparation of the vehicle body composite coating and an erosion test. The vehicle body composite coating enhances the binding force between the whole coating system and the aluminium alloy substrate, reduces the possibility of shedding of the coating as a whole, and improves the anti-erosion performance of the vehicle body composite coating.

High field high-temperature compression test device and method of solid materials

The invention relates to a high field high-temperature compression test device of solid materials, which comprises a stable high-voltage power source system used for providing various types of voltage, an electric field applying device used for making a test sample or test specimen (2) positioned in a uniform stable strong electric field, a heating and temperature control system used for ensuring the test sample or test specimen at a given temperature, and a loading and data acquiring system which loads the test sample or test specimen within the deformation velocity range of 0.02-100mm/min and can automatically detect the whole process of compression deformation. The invention can test the characteristic of high-temperature compression deformation of the materials in strong electric field environment, and related material shaping and processing technology is developed and seared on the basis, and real-time tracking, recording, data processing and display are carried out to the whole process ...

Assembling and evacuating port road security evaluation method based on error back-propagation algorithm

The invention provides an assembling and evacuating port road security evaluation method based on an error back-propagation algorithm. An assembling and evacuating port road security evaluation model based on the error back-propagation algorithm is established according to the error back-propagation algorithm (PB algorithm) on the basis of a comprehensive index system of the special traffic situation of assembling and evacuating port roads. The method aims at the special situation and existing problems of the traffic of the assembling and evacuating port roads, the comprehensive index system which is applicable to the special traffic situation of the assembling and evacuating port roads is established in four aspects including drivers, traffic flow states, traffic environments and traffic management, the assembling and evacuating port road security evaluation model based on the error back-propagation algorithm is established, and the assembling and evacuating port road security evaluation ...

Method for assigning traffic in port area in reservation congregation mode

The invention belongs to the technical field of port area traffic management, and relates to a method for assigning traffic in a port area in a reservation congregation mode. The method is used for realizing port area traffic assignment with two target destinations through the steps of: establishment and initialization of a knowledge base; evaluation of a guidance strategy; stage judgment; guidance learning; and generation of the guidance strategy corresponding to a road network state. By the method of the invention, a port area traffic management department sets guidance signs at each key crossing, so that congregation traffic flows are balanced, and traffic facilities, in particular port area traffic capacity, are fully utilized. Therefore, the advantage of guiding the group is achieved.

Compound sludge curing agent and application thereof

The invention discloses a compound sludge curing agent and an application thereof. The curing agent is a mixture mixed from following raw materials, by weight, 8-20 parts of cement, 5-10 parts of medical stone powder and 2-5 parts of pyrophyllite powder. The cement in the sludge curing agent is mainly used for increasing a curing strength of sludge. Strong water-absorption effects of the medical stone powder and the pyrophyllite powder can be developed. The medical stone powder and the pyrophyllite powder are layer silicate minerals. Clay meniral characteristics of both of the medical stone powder and the pyrophyllite powder cooperatively work so that sludge after being cured is ensured to have relatively good anti-washout performance and anti-freeze-thawing performance and finally optimum moisture content in the cured sludge is increased and a compaction requirement during a construction process is satisfied better. The invention develops an application of the medical stone and the pyrophyllite ...

Aluminum alloy vacuum welding method capable of eliminating silicon segregation

The invention discloses an aluminum alloy vacuum welding method capable of eliminating silicon segregation. The method comprises the following steps of: (1) preheating, namely assembling aluminum alloy to be welded and aluminum-silicon solder, placing parts into a vacuum brazing furnace, heating the parts to 200 to 300 DEG C at the heating speed of 8 to 10 DEG C/s, and preserving heat for 20 to 40 minutes at the vacuum degree of 5*10<-2> Pa; (2) breaking a membrane, namely heating to 530 to 550 DEG C at the heating speed of 6 to 9 DEG C/s and preserving heat for 20 to 40 minutes at the vacuumdegree of 5*10<-3> Pa; (3) welding, heating to 600 to 620 DEG C at the heating speed of less than 5 DEG C/s and preserving heat for 60 to 90 minutes at the vacuum degree of 3*10<-3> Pa; and (4) cooling, namely cooling the welded parts to 520 to 540 DEG C along with the furnace, taking out the parts, and performing air-cooling on the parts to room temperature. Vacuum brazing process parameters arecontrolled ...

Harbour district traffic flow forecasting method under reserved harbour concentration mode

The invention relates to a harbour district traffic flow forecasting method under a reserved harbour concentration mode, which belongs to the technical field of harbour district traffic control and comprises the following steps of: dividing traffic generation and attraction areas to obtain the time-interval distribution rule of the historical traffic volume of each traffic generation area and each traffic attraction area to determine the traffic attraction area and the traffic volume; determining a corresponding back-up yard after a forwarder and a cargo collection style are obtained by issuing dynamic information, thereby obtaining the traffic generation area and the traffic volume; forecasting the harbour concentration time-interval traffic volume of each current area; calculating the harbour concentration vehicle OD distribution of the generation areas and the attraction areas, and adding the commuting OD of historical statistics to obtain total OD which corresponds to the generation ...

Ultra-fine pearlite high-strength rail steel and its preparation method

Vehicle body composite coating and design method thereof

The invention relates to the technical field of railway vehicle coating design and particularly discloses a vehicle body composite coating and a design method thereof. The vehicle body composite coating comprises, in a successively arranging manner, a polyurethane finishing coat, a polyurethane intermediate layer, polyurethane putty and a micro-arc oxidation ceramic layer undercoat. The micro-arc oxidation ceramic layer undercoat coats an aluminum substrate of the vehicle body. The design method includes establishment of a physical model, selection of an optimal thickness ratio, preparation of the vehicle body composite coating and an erosion test. The vehicle body composite coating effectively enhances a binding force between the whole coating system and an aluminum alloy substrate, effectively reduces possibility of totally falling-off of the coating during an erosion process in operation and is effectively improves in an anti-erosion performance.

Harbour district traffic flow forecasting method under reserved harbour concentration mode

The invention relates to a harbour district traffic flow forecasting method under a reserved harbour concentration mode, which belongs to the technical field of harbour district traffic control and comprises the following steps of: dividing traffic generation and attraction areas to obtain the time-interval distribution rule of the historical traffic volume of each traffic generation area and each traffic attraction area to determine the traffic attraction area and the traffic volume; determining a corresponding back-up yard after a forwarder and a cargo collection style are obtained by issuing dynamic information, thereby obtaining the traffic generation area and the traffic volume; forecasting the harbour concentration time-interval traffic volume of each current area; calculating the harbour concentration vehicle OD distribution of the generation areas and the attraction areas, and adding the commuting OD of historical statistics to obtain total OD which corresponds to the generation ...

Rail vehicle automobile body flexibility measuring device

The utility model relates to a flexible measuring device of rail vehicle automobile body, including a frame, the frame comprises a crossbeam and two perpendicular roof beams fixing on the crossbeam be carved with the scale on the perpendicular roof beam be provided with the elevation positioning device that can follow perpendicular roof beam and reciprocate on the perpendicular roof beam, be provided with horizontally slip dipperstick on one of them perpendicular roof beam, slip dipperstick and the elevation positioning device sliding connection of place on the perpendicular roof beam. The utility model has the advantages that the whole structure is simple it is single, but through vertical migration's elevation positioning device and horizontal migration's slip dipperstick, can be applicable to the measurement of various different model EMUs widths of the carbody to can easily read out measurement numerical value, easy operation is convenient, has not only improved measurement accuracy ...

Dynamic penetration instrument

The invention relates to a dynamic penetration instrument, and belongs to equipment for geotechnical engineering investigation. The dynamic penetration instrument comprises a probe rod body, and a plurality of protruding sections are arranged on the probe rod body. According to the dynamic penetration instrument, the traditional mode that line marks are made on a probe rod is replaced, the number of hitting times is recorded by distinguishing the diameter enlarged positions and the connecting positions of connecting rods in the hitting process, and therefore the exploration efficiency and the exploration accuracy are improved.

Superplastic welding experimental device and method by utilizing electric field action

The invention relates to a superplastic welding experimental device which belongs to the technical field of material processing. The superplastic welding experimental device comprises a high-voltage power system, an electric field applying device, a welding heating and temperature control system and a loading and data acquisition system, wherein the high-voltage power system is used for providingstable voltage; the electric field applying device is used for enabling samples or specimens to be welded to be in a uniform and stable electric field with adjustable atmosphere; the welding heating and temperature control system is used for ensuring the samples or the specimens to be at a given welding temperature; and the loading and data acquisition system is used for realizing that the samples or the specimens is loaded in a deformation speed range of 0.02-100mm/min and the full welding process can be automatically detected. By utilizing the invention, real time tracking recording and data processing ...

Pavement crack repairing equipment

The invention relates to the technical field of pavement construction, in particular to pavement crack repairing equipment which comprises a base made of transparent materials, a dust collector, a material box, an air cooler and a plurality of rolling wheels used for being supported on the ground are installed on the base, a dust collection pipe is connected to the dust collector, and the material box is connected with a discharging pipe through a suction pump. The air cooler is connected with an air outlet pipe, the axis of the end, away from the dust collector, of the dust collection pipe, the axis of the end, away from the suction pump, of the discharging pipe and the axis of the end, away from the air cooler, of the air outlet pipe converge at one point, and the point and the lowest point of the roller are located on the same horizontal plane. The pavement crack repairing efficiency can be improved.

Environment-friendly modified asphalt and preparation method thereof

The invention provides environment-friendly modified asphalt and a preparation method thereof. The modified asphalt is prepared from the following constituents in parts by weight: 100 parts of asphalt, 3-10 parts of forsterite powder coating, 1-5 parts of yttrium aluminum garnet fiber, 1-5 parts of styrene-acrylic resin, 0.5-2.2 parts of dibenzalacetone, 0.2-1.4 parts of hydroquinone, and 2-7 parts of polyisobutylene succinimide. The environment-friendly modified asphalt disclosed by the invention can obviously improve the pavement performance of the asphalt, further has multiple environment effects of flame retarding, smoke suppression, hot mixing and emission reduction, meets the low-carbon, environment-protecting, safe and reliable green transport construction requirements, and promotes sustainable development of the society; the raw materials are wide in sources; the production preparation process is free from pollution; the good economic benefit can be achieved.

VEHICLE BODY COMPOSITE COATING AND DESIGN METHOD THEREOF

A vehicle body composite coating, comprising, in succession, a polyurethane finishing coat, a polyurethane intermediate layer, a polyester putty and a micro-arc oxidation ceramic layer undercoat, wherein the micro-arc oxidation ceramic layer undercoat is on an aluminium substrate of the vehicle body. The design method of the vehicle body composite coating includes establishment of a physical model, selection of an optimal thickness ratio, preparation of the vehicle body composite coating and an erosion test. The vehicle body composite coating enhances the binding force between the whole coating system and the aluminium alloy substrate, reduces the possibility of shedding of the coating as a whole, and improves the anti-erosion performance of the vehicle body composite coating. 1. A vehicle body composite coating , characterized in that it comprises , in succession , a polyurethane topcoat , a polyurethane intermediate layer , a polyester putty and a micro-arc oxidation ceramic primer , wherein the micro-arc oxidation ceramic primer is coated on an aluminium substrate of the vehicle body.2. The vehicle body composite coating according to claim 1 , characterized in that the polyurethane topcoat has a thickness of 95 μm˜105 μm claim 1 , a thickness ratio between the polyurethane topcoat and the polyurethane intermediate layer is 1.5:1˜2:1 claim 1 , the polyester putty has a thickness of 1 μm˜2 μm claim 1 , and the micro-arc oxidation ceramic primer has a thickness of 55 μm˜65 μm.3. The vehicle body composite coating according to claim 1 , characterized in that the micro-arc oxidation ceramic primer is coated on the aluminium substrate of the vehicle body by means of spraying micro-arc oxidation.4. A design method for the vehicle body composite coating according to claim 1 , characterized in that it comprises the steps of:S1. establishing a physical model based on the vehicle body composite coating, calculating a dynamic response of the vehicle body composite coatings ...