Preparing method of double-sided knitted carbon brake disc prefabricated body

A technology of carbon brake discs and prefabricated bodies, which is applied in the fields of acupuncture machines, chemical instruments and methods, textiles and papermaking, etc. It can solve the problems of carbon brake disc performance mismatch and low deposition efficiency of carbon brake discs, so as to prevent partial wear The effect of the phenomenon

Inactive Publication Date: 2018-05-01
XIAN AVIATION BRAKE TECH
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the low deposition efficiency of carbon brake discs in the prior art and the performance mismatch caused by structural asymmetry on both sides of carbon brake discs, the present invention proposes a method for preparing a double-sided needle-punched carbon brake disc prefabricated body

Method used

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  • Preparing method of double-sided knitted carbon brake disc prefabricated body
  • Preparing method of double-sided knitted carbon brake disc prefabricated body
  • Preparing method of double-sided knitted carbon brake disc prefabricated body

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Embodiment Construction

[0029] specific implementation plan

[0030] This example is the preparation of a double-sided composite needle-punched preform. The prefabricated body adopts HTS-12K PAN-based carbon fiber.

[0031] Step 1, manufacture mesh tire.

[0032] Utilize the net tire production line of prior art to manufacture net tire 7. The short carbon fiber filaments that have been cut are transported into the carding machine through the feed curtain, and are combed into a net through a cylinder and a carding rod to form a finished net tire 7 of 350mm×50m, which is rolled up for use.

[0033] Step 2, manufacturing unit layers.

[0034] Unfold the finished net tire obtained on the cutting workbench. The carbon fiber filaments are drawn out through the carbon fiber wire frame and laid on the mesh tire. Cutting the mesh tire laid with the carbon fiber filaments to obtain multiple unit layers of 350mm×350mm.

[0035] Step 3, setting acupuncture parameters.

[0036] Before needling, first set t...

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Abstract

A preparing method of a double-sided knitted carbon brake disc prefabricated body relates to a double-sided composite knitting technology, and the double-sided composite knitted prefabricated body isformed by overlapping and laying mesh tire/weft-free cloth. The mode of laying one mesh tire or weft-free cloth on each side of the two sides for double-sided knitting is adopted. The feeding speed, knitting frequency, knitting pressure and knitting speed of a composite needle machine reach the optimum compatibility, and the mode of laying the mesh tire to the mesh tire and laying the weft-free cloth to the weft-free cloth in a back-to-back structure is adopted. The deposition rate is increased by 20%, and the eccentric wear phenomenon can be well prevented.

Description

technical field [0001] The invention relates to a method for preparing a carbon fiber prefabricated body for carbon / carbon composite materials. Background technique [0002] Carbon brake disc prefabrication as a reinforcement affects various properties of carbon / carbon composite materials, and a reasonable prefabricated body structure determines the quality of carbon / carbon composite materials. [0003] At present, carbon / carbon or new carbon composite brake disc prefabrication mainly adopts non-weft cloth interlaced laying structure, that is, integral needle felt structure. It overcomes the shortcomings of weak interlayer strength of 2D laminated prefabricated body, and at the same time overcomes the weakness of complex process and high cost of 3D woven prefabricated body. technology. Enterprises or universities such as French European Power Plant Company, Shanghai University, Lanzhou Carbon Factory, AVIC Brake, Yixing Tianniao Company and Yixing Feizhou Company have carr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4242D04H1/46D04H1/74D04H18/02B32B37/00
Inventor 强琪董恒张伟滨
Owner XIAN AVIATION BRAKE TECH
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