Honda Giken Kogyo Kabushiki Kaisha

Hitachi Powdered Metals Co., Ltd.

Shuji Sasaki

Hideo Shikata

Zenzo Ishijima

Hideo Urata

Jun Sakai

Junichi Ichikawa

Katsuhiko Ueda

Shoji Kawase

Jun-ichi Ichikawa

Jun-ichi Ueda

A plurality of blanks divided at a division end face 5 or a blank-bonded product comprising a plurality of blanks sintered and bonded together are or is compressed in the same mold, so that they are plastically deformed until the division end faces 5 are cohered. Thereafter, a load is applied to the plastically worked product in a direction of breaking of the division end faces 5 to break the division end faces 5 and divide the plastically worked product into a plurality of members. In this manner, a split type mechanical part having irregularities meshed with each other on mating faces and easily positionable relative to each other can be produced with a good dimentional accuracy.

Process for producing split type mechanical part

The Al-Si sintered alloy having good mechanical strength and elongation and is especially excellent in wear resistance, and a method for producing the same. The sintered alloy consists of 2.4-23.5% Si, 2-5% Cu, 0.2-1.5% Mg, 0.01-1% of transition metals and the balance of aluminum and unavoidable impurities, and has a dapple grain structure of an Al-solid solution phase and an Al-Si alloy phase containing dispersed pro-eutectic Si crystals having a maximum diameter of 5-60 .mu.m either in the whole body or in the surface contact portion, and the area ratio of the Al-solid solution phase in the grain structure is in the range of 20-80%.

Wear-resistant sintered aluminum alloy and method for producing the same

Growing community of inventors

Matsudo, Japan

Shuji Sasaki