| 摘要 |
PROBLEM TO BE SOLVED: To provide a brake disc for a vehicle, in which thermal stress generated in use is reduced in itself, and in which generation of deformation due to thermal stress such as thermal cracking, disc deformation, damages in fastening bolts, etc., can be prevented. SOLUTION: In this brake disc for a vehicle, special alloy having a low thermal expansion coefficient is used to be integrated. Workability, friction abrasion resistance, and structural reliability, that are similar to those of current material are secured, while generation of cracking can be drastically restricted, with damages in fastening bolts prevented. COPYRIGHT: (C)2005,JPO&NCIPI
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