制輪子及びその製造方法並びに鉄道車両用踏面ブレーキ装置

Title:

制輪子及びその製造方法並びに鉄道車両用踏面ブレーキ装置

Document Type and Number:

Japanese Patent JP6674750

Kind Code:

B2

Abstract:

Provided is a brake block including a friction material whose friction coefficient is decreased to the same level as in a cast iron-based friction material while ensuring braking properties under dry and wet conditions and a method for producing the same. The brake block I includes a friction material 3 including a scale-like graphite and a granular graphite in an amount of 20 to 30% by volume in total. The brake block I is produced by a production method including: a preforming step of subjecting a frictional material composition including a scale-like graphite and a granular graphite in an amount of 20 to 30% by volume in total to pressure forming, thereby obtaining a preformed body, and a heat compression forming step of putting the preformed body into a thermoforming mold, and overlaying a back plate thereon, followed by performing heat compression forming, thereby obtaining a brake block I having a desired shape.

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Inventors:

Kawakami Tota
Hideaki Takahashi

Application Number:

JP2015152308A

Publication Date:

April 01, 2020

Filing Date:

July 31, 2015

Export Citation:

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