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Применить Всего найдено 9. Отображено 9.
03-05-2012 дата публикации

Apparatus for pitch densification

Номер: US20120104641A1
Автор: David M. Wright, Mark L. La Forest, Roger L. Klinedinst
Принадлежит: Honeywell International Inc

A pitch densification apparatus may be used to form a carbon-carbon composite material. In some examples, the apparatus is configured to pitch densify a material using one or more of a plurality of different pitch densification techniques. For example, the apparatus may densify a material with a selectable one of the resin transfer molding cycle, the vacuum-assisted resin transfer molding cycle, and/or the vacuum pressure infiltration cycle. The apparatus may respond to initial or changing properties of a material to be densified. In some additional examples, the apparatus includes a mold configured to receive a preform and a portion of solid pitch separate from the preform. The apparatus may include a heating source thermally coupled to the mold that is configured to heat the solid pitch above a melting temperature of the solid pitch. The apparatus may melt the pitch without external pitch melting equipment.

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Номер записи: 1
03-05-2012 дата публикации

APPARATUS FOR PITCH DENSIFICATION

Номер: US20120104659A1
Автор: Klinedinst Roger L., La Forest Mark L., Murdie Neil, Wright David M.
Принадлежит: HONEYWELL INTERNATIONAL INC.

A pitch densification apparatus may be used to form a carbon-carbon composite material. In some examples, the apparatus is configured to pitch densify a material using one or more of a plurality of different pitch densification techniques. For example, the apparatus may densify a material with a selectable one of the resin transfer molding cycle, the vacuum-assisted resin transfer molding cycle, and/or the vacuum pressure infiltration cycle. The apparatus may respond to initial or changing properties of a material to be densified. In some additional examples, the apparatus includes a mold configured to receive a preform and a portion of solid pitch separate from the preform. The apparatus may include a heating source thermally coupled to the mold that is configured to heat the solid pitch above a melting temperature of the solid pitch. The apparatus may melt the pitch without external pitch melting equipment. 1. An apparatus comprising:a mold configured to receive a preform and a solid pitch separate from the preform;a heating source thermally coupled to the mold, wherein the heating source is configured to heat the solid pitch above a melting temperature of the solid pitch within the mold to melt the solid pitch; anda gas source configured to apply a gas pressure in the mold to force melted pitch into the preform to densify the preform.2. The apparatus of claim 1 , wherein the preform comprises a carbon fiber material in a shape of a brake disc.3. The apparatus of claim 1 , wherein the gas source is configured to apply the gas pressure between approximately 10 pounds per square inch (psi) and approximately 1000 psi.4. The apparatus of claim 1 , further comprising a vacuum source configured to create a vacuum pressure in the mold at least prior to application of the gas pressure.5. The apparatus of claim 1 , wherein the vacuum source is configured to create the vacuum pressure between approximately 5 torr and approximately 100 torr.6. The apparatus of claim 1 , ...

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Номер записи: 2
21-06-2012 дата публикации

APPARATUS FOR CARBON FIBER PROCESSING AND PITCH DENSIFICATION

Номер: US20120153528A1
Автор: James Mark C., Klinedinst Roger L., LaForest Mark L., Murdie Neil, Wright David M.
Принадлежит: HONEYWELL INTERNATIONAL INC.

A pitch densification apparatus may be used to form a carbon-carbon composite material. The apparatus may be used to compress a carbon fiber material, and, thereafter, pitch densify the carbon fiber material. The compression and pitch densification of the carbon fiber material may be carried out within the same mold cavity of the pitch densification apparatus. In one example, an apparatus may comprise a mold defining a mold cavity that is configured to receive a material to be densified. The mold cavity is configured to be adjusted from a first volume to a second volume less than the first volume to compress the material in the mold cavity. The example apparatus may further comprise a gas source configured to apply a gas pressure in the mold cavity to force pitch into the material in the mold cavity to densify the material, and a vacuum source configured to create a vacuum pressure in the mold cavity at least prior to the application of the gas pressure. 1. An apparatus comprising:a mold defining a mold cavity configured to receive a material to be densified, wherein the mold cavity is configured to be adjusted from a first volume to a second volume less than the first volume to compress the material in the mold cavity;a gas source configured to apply a gas pressure in the mold cavity to force pitch into the material in the mold cavity to densify the material; anda vacuum source configured to create a vacuum pressure in the mold cavity at least prior to the application of the gas pressure.2. The apparatus of claim 1 , wherein the mold defines a top surface claim 1 , a bottom surface claim 1 , and the mold cavity is defined between the top surface and the bottom surface claim 1 , and wherein the top surface is configured to actuate to reduce a volume of the mold cavity from the first volume to the second volume.3. The apparatus of claim 1 , further comprising a press configured to adjust a volume of the mold cavity claim 1 , wherein the press is configured to ...

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Номер записи: 3
01-08-2013 дата публикации

APPARATUS FOR PITCH DENSIFICATION

Номер: US20130193606A1
Автор: Klinedinst Roger L., La Forest Mark L., Wright David M.
Принадлежит: HONEYWELL INTERNATIONAL INC.

A pitch densification apparatus may be used to form a carbon-carbon composite material. In some examples, the apparatus is configured to pitch densify a material using one or more of a plurality of different pitch densification techniques. For example, the apparatus may densify a material with a selectable one of the resin transfer molding cycle, the vacuum-assisted resin transfer molding cycle, and/or the vacuum pressure infiltration cycle. The apparatus may respond to initial or changing properties of a material to be densified. In some additional examples, the apparatus includes a mold configured to receive a preform and a portion of solid pitch separate from the preform. The apparatus may include a heating source thermally coupled to the mold that is configured to heat the solid pitch above a melting temperature of the solid pitch. The apparatus may melt the pitch without external pitch melting equipment. 1. A method for densifying a material via pitch , the method comprising: a ram configured to apply a ram pressure sufficient to force a pitch into the mold to densify the material,', 'a gas source configured to apply a gas pressure in the mold sufficient to force the pitch into the mold to densify the material, and', 'a vacuum source operable to create a vacuum pressure in the mold at least prior to application of either the ram pressure or the gas pressure; and, 'inserting the material to be densified into a mold, wherein the mold is part of an apparatus includingdensifying the material in the mold via pitch using a selectable one of the ram, the gas source, the ram and the vacuum source, or the gas source and the vacuum source.2. The method of claim 1 , wherein the material comprises a carbon fiber material preformed into a shape of a brake disc.3. The method of claim 1 , wherein densifying the material in the mold via pitch comprises applying a ram pressure claim 1 , via the ram claim 1 , between approximately 500 pounds per square inch (psi) and ...

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Номер записи: 4
14-04-2016 дата публикации

Facilitating pitch stabilization in densified carbon fiber preforms

Номер: US20160102023A1
Автор: David Flask, David M. Wright, Mark L. La Forest, Roger L. Klinedinst, Slawomir T. Fryska
Принадлежит: Honeywell International Inc

A method of forming a densified preform or composite part is disclosed that includes partially densifying a porous preform, forming channels in the partially densified preform that open to an exterior surface of the partially densified preform, infiltrating a densifying agent, such as pitch, into at least some of the channels of the partially densified preform, at least partially stabilizing the densifying agent, including heating at a first temperature, such that cracks form within the densifying agent, and exposing the preform to an oxidizing agent, and heating the at least partially stabilized preform at a second temperature to carbonize at least the stabilized densifying agent. A partially densified preform including a densifying agent disposed at least in such channels also is disclosed.

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Номер записи: 5
06-11-2014 дата публикации

APPARATUS FOR CARBON FIBER PROCESSING AND PITCH DENSIFICATION

Номер: US20140327169A1
Автор: James Mark C., Klinedinst Roger L., La Forest Mark L., Murdie Neil, Wright David M.
Принадлежит:

A pitch densification apparatus may be used to form a carbon-carbon composite material. The apparatus may be used to compress a carbon fiber material, and, thereafter, pitch densify the carbon fiber material. The compression and pitch densification of the carbon fiber material may be carried out within the same mold cavity of the pitch densification apparatus. In one example, an apparatus may comprise a mold defining a mold cavity that is configured to receive a material to be densified. The mold cavity is configured to be adjusted from a first volume to a second volume less than the first volume to compress the material in the mold cavity. The example apparatus may further comprise a gas source configured to apply a gas pressure in the mold cavity to force pitch into the material in the mold cavity to densify the material, and a vacuum source configured to create a vacuum pressure in the mold cavity at least prior to the application of the gas pressure. 1. A method comprising:inserting a carbon fiber material a mold cavity of an apparatus, wherein the apparatus is configured to densify the carbon fiber material within the mold cavity using a vacuum pressure infiltration cycle;compressing the carbon fiber material in the mold cavity by adjusting the mold cavity from a first volume to a second volume less than the first volume; andpitch densifying the compressed carbon fiber material in the mold cavity using the vacuum pressure infiltration cycle.2. The method of claim 1 , wherein the carbon fiber material to be densified comprises at least one of a carbonized polyacrylonitrile fiber or a pitch fiber.3. The method of claim 1 , wherein the carbon fiber material comprises a fiber material formed into a plurality of segments claim 1 , and wherein inserting the material into the mold cavity comprises inserting the plurality of segments to define a plurality of layers in the mold cavity.4. The method of claim 1 , wherein the mold includes a top surface and a bottom ...

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Номер записи: 6
28-10-2008 дата публикации

Mold fixture for extracting and inserting upper and lower molds

Номер: US7442024B2
Автор: Christopher S. Wahlers, Mark L. La Forest, Roger L. Klinedinst
Принадлежит: Honeywell International Inc

A mold fixture 20 for safe and efficient extraction, insertion and storage of mold inserts 26, 28 is provided. The mold fixture 20 includes a lower receiving area 24 for fixedly receiving a lower mold insert 28 , an upper receiving area 22 for fixedly receiving an upper mold insert 26 . The mold fixture 20 facilitates insertion or extraction of the upper and lower mold inserts 26, 28 into/from a molding machine 1 in a safe and secure manner. Furthermore, the upper and lower mold inserts 26, 28 can be securely stored within the mold fixture 20 at a storage location.

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Номер записи: 7
13-05-2014 дата публикации

Techniques for pitch densification

Номер: US8721954B2
Автор: David M. Wright, Mark L. La Forest, Roger L. Klinedinst
Принадлежит: Honeywell International Inc

In some examples, a method for densifying a material via pitch comprises inserting the material to be densified into a mold, wherein the mold is part of an apparatus. The apparatus may include a ram configured to apply a ram pressure sufficient to force a pitch into the mold to densify the material, a gas source configured to apply a gas pressure sufficient to force the pitch into the mold to densify the material, and a vacuum source operable to create a vacuum pressure in the mold at least prior to application of either the ram pressure or the gas pressure. The method may further comprise densifying the material in the mold via pitch using a selectable one of the ram, the gas source, the ram and the vacuum source, or the gas source and the vacuum source.

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Номер записи: 8
20-06-2012 дата публикации

Apparatus for carbon fiber processing and pitch densification

Номер: EP2465670A1
Автор: David M. Wright, Mark C. James, Mark L. LaForest, Neil Murdie, Roger L. Klinedinst
Принадлежит: Honeywell International Inc

A pitch densification apparatus may be used to form a carbon-carbon composite material. The apparatus may be used to compress a carbon fiber material, and, thereafter, pitch densify the carbon fiber material. The compression and pitch densification of the carbon fiber material may be carried out within the same mold cavity of the pitch densification apparatus. In one example, an apparatus may comprise a mold defining a mold cavity that is configured to receive a material to be densified. The mold cavity is configured to be adjusted from a first volume to a second volume less than the first volume to compress the material in the mold cavity. The example apparatus may further comprise a gas source configured to apply a gas pressure in the mold cavity to force pitch into the material in the mold cavity to densify the material, and a vacuum source configured to create a vacuum pressure in the mold cavity at least prior to the application of the gas pressure.

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Номер записи: 9