Dry type asbestos-free friction sheet

A friction plate and asbestos-free technology, applied to friction linings, mechanical equipment, etc., can solve the problems of low forming strength of friction materials and low utilization rate of friction materials, so as to improve the mechanical strength of friction plates, stabilize friction coefficient, and prolong service life The effect of longevity

Inactive Publication Date: 2008-05-28
杭州汉乐科新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The invention provides a method for preparing a friction sheet, which improves the formula of the friction material to solve the technical problems of low forming strength of the friction material and low utilization rate of the friction material in the prior art

Method used

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Effect test

Embodiment

[0016] Embodiment: Dry asbestos-free friction sheet, made of metal skeleton, lubricating material and friction material, the metal skeleton is smelted by iron-based powder, and its friction material formula is made of iron oxide black 5, cashew nut shell oil resin friction powder 7, barium sulfate 30, and vermiculite 2 are composed by weight parts; the lubricating material is made up of molybdenum disulfide 5, colloidal graphite 10 by weight; also added binder 15, ceramic fiber 20, epoxy resin Class curing agent 10, anti-aging agent 5; the binder is composed of 9 parts of phenolic resin and 6 parts of cashew nut shell oil resin.

[0017] The preparation method of dry-type non-asbestos friction plate adopts one-time hot pressing molding process: after pressing the metal skeleton by powder metallurgy, stir the binder powder, curing agent and anti-aging agent powder at room temperature for 10 minutes to a uniform state; add 9 times the volume Alcohol, stirred until completely dis...

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PUM

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Abstract

The invention relates to a dry-type friction plate without mineral cotton, comprising a metal frame of powder metallurgy and following compositions with weight, 1-5 iron oxide black, 5-10 cashew shell oil resin friction powder, 30-50 barium sulfate, 1-8 vermiculite, 5-10 molybdenum disulfide, 10-20 colloidal graphite, 15-20 binding agent, 20-30 ceramic fiber, 8-10 epoxide resin solidifying agent, and 5-6 antiaging agent, wherein the binding agent is constituted by 60%-70% formaldehyde-phenol resin and 30%-40% cashew shell oil resin friction powder. The preparation method of the friction plate comprises casting the metal frame by utilizing powder metallurgy, smearing the binding agent on the surface of the metal frame, preparing friction material with even mixture according to the composition, directly pressing the even mixing powder on the metal frame, and sintering 3-15 minutes with 200-220kg/mm2 of pressure in 180-210 DEG C of controlling temperature, and then heat pressing to shape.

Description

technical field [0001] The invention relates to a friction component for construction machinery braking, in particular to a dry non-asbestos friction plate. Background technique [0002] The existing technology of the friction plate is to use the traditional mechanical riveting technology, usually the friction material is fixed on the metal sheet by mechanical riveting method, this method has the following disadvantages: (1) step-by-step forming, the friction material is formed first and then riveted onto the sheet metal. (2) The strength of the friction material is low, and the formed friction material needs to be drilled, so that the overall strength of the friction material is damaged, and it is easy to generate stress concentration at the riveted part after riveting. (3) The utilization rate of the friction material is low, because the position occupied by the rivets in the friction material needs to be given up, the friction material cannot be fully utilized. (4) The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/02C08J5/14
Inventor 徐南汉
Owner 杭州汉乐科新材料科技有限公司
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