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Friction material

A technology of friction parts and inorganic substances, applied in the direction of friction linings, gear transmission mechanisms, other chemical processes, etc., can solve problems such as grinding of metal blocks, abnormal wear of friction parts, etc.

Inactive Publication Date: 2020-01-10
ADVICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the metal block inside the friction member significantly grinds the target part, and the friction member is abnormally worn due to the ground target part.

Method used

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Embodiment

[0055] Hereinafter, examples of the friction material of the present embodiment will be described, but the present invention is not limited to these examples.

[0056] As Examples 1-16 and Comparative Examples 1-6, according to Figure 1 ~ Figure 2 Friction parts manufactured with the indicated compounding quantities and friction part raw materials were used for brake linings, and low surface pressure aggressiveness, DTV growth, metal buildup generation, and general effectiveness were evaluated. In addition, the unit of the compounding quantity in each friction material raw material composition in a figure is weight% with respect to the whole friction material raw material.

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Abstract

Provided is a friction material that comprises a fiber base material, a bonding material, an organic filler, and an inorganic filler, wherein: the contained amount of a copper element is at most 0.5 wt% with respect to the total amount of friction material; the inorganic filler contains an inorganic matter having a Mohs hardness of at least 6.5 and a cleavable inorganic matter; the contained amount of the inorganic matter having a Mohs hardness of at least 6.5 is less than 1.0 wt% with respect to the total amount of the friction material; and the contained amount of the cleavable inorganic matter is 12.0-24.0 wt% with respect to the total amount of the friction material.

Description

technical field [0001] The present invention relates to a friction member used in a brake device for a vehicle or the like. Background technique [0002] Various characteristics such as high efficiency (high friction coefficient) and long life (wear resistance) are required for friction materials used in brake linings and brake shoes of vehicles and the like. [0003] Conventionally, for the purpose of maintaining the coefficient of friction and imparting wear resistance, copper components having high thermal conductivity and excellent ductility have been contained in friction materials. Today, however, environmental concern is increasing worldwide, and development of a friction member (copper-free) with reduced copper content, which has a high environmental load, is urgently required. However, various problems such as deterioration of wear resistance and generation of metal pick up (metal pick up: MPU, synonymous with metal catch) are emerging due to the reduction of the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/14F16D69/02
CPCF16D69/026F16D2200/0065F16D2200/0056
Inventor 村上学
Owner ADVICS CO LTD
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