Akebono Brake Industry Co., Ltd.

Takuya Kitami

Katsuji Seki

Yoshiyuki Sugai

Hiroshi Kasuya

Motoyuki Miyaji

Michinori Yanagi

Hiroshi Isobe

A mold of a brake pad friction material, including a mold member fitted into a mold frame into which a powder material of the brake pad friction material is put, in which the mold member is configured such that a pressing surface in a surface of the mold member, which forms a region abutting the powder material put into a mold frame, has a concave shape that is formed by being gradually recessed from both end portion sides to a center portion side of the pressing surface.

Mold for brake pad friction material, manufacturing apparatus, manufacturing method, preform, and brake pad

A friction material composition including a fiber base material, a friction modifier and a binder. A content of copper in the friction material composition is 0.5% by mass or less. The friction material composition includes a partially graphitized coke and muscovite. A friction material is formed by molding the friction material composition.

Friction material composition and friction material

A non-asbestos friction material not containing a heavy metal and a heavy metallic compound as the blending ingredients of the friction material is provided with graphite and coke in total from 5 to 25 vol % in volume of friction material. A volume ratio of the graphite/coke is preferably from 2/1 to 7/1. An average particle size of the coke is preferably from 150 to 400 &#x3bc;m.

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Tokyo, Japan

Takuya Kitami