| 摘要 |
PURPOSE:To restrain the thermal distortion of a friction pad effectively at the time of production and use by selecting the joint area between a steel base plate and a frictional material piece made of sintered alloy to be 25-75% as wide as the area of the one side of the frictional material piece. CONSTITUTION:Raw material components of bronze for frictional material are uniformly mixed to fill a metal mold, and a shaped body 1 is obtained by the pressure of about 2-6ton/cm<2>. For the frictional raw material, all bronze materials conventionally used are available. Then, after joint-preventive agent is applied or arranged on a non-joint part area 5 between a steel base plate 3 previously gilt with copper or copper alloy of about 10-20mum and the shaped body 1 on the steel base plate 3, the shaped body 1 is placed, and sintered in a non- oxidization atmosphere. The extent of the area 5 is selected so that the area of the joint part 7 between the shaped body 1 and the steel base plate 3 may be within the range of 25-75% of the whole area of the shaped body 1. |
