Ndc Company Ltd.

Nippon Dia Clevite Company, Limited

Toru Morimoto

Tsuyoshi Ohsaki

Kenji Matsuzawa

Toshio Ohkawa

Masahito Fujita

Yoshitsugu Kanda

Minoru Kurikawa

Kiyoshi Nakanishi

A stainless steel powder is mixed with at least a Ni--Mn and a Ni--Cr powder, and the powder mixture is formed by loose packing into a required configuration. The powder mixture is sintered in a non-oxidizing atmosphere at the melting point of the Ni--Mn powder or at a higher temperature thereby to obtain a porous body.

Method of sintering stainless steel powder

In the manufacture of a bearing material containing an aluminum base alloy, one surface of a steel strip is washed and roughened; the aluminum base alloy is spread on the surface of the steel strip; and the aluminum base alloy and the steel strip are hot-rolled in the air to pressure-bond the former to the latter into a unitary structure. Prior to spreading the aluminum base alloy, an aluminum powder which well adheres to the steel strip may also be spread on the surface of the steel strip.

Method of making a bearing material containing an aluminum base alloy

A porous sintered material of good permeability and effective sound absorbability, being formed by combining between particles of aluminum or aluminum alloy powder into a body by means of sintering and having connecting pores among the particles of said aluminum or aluminum alloy powder. Said porous sintered material is obtained by mixing aluminum or an aluminum alloy with a low melting point aluminum alloy, forming the mixture into the predetermined shape and sintering it at a temperature which is at least 10.degree. C. lower than the melting point of the base material and higher than that of the low melting point material.

Porous body of aluminum or its alloy and a manufacturing method thereof

Disclosed is a method for the recovery of useful metallic components such as lead, tin, copper, etc. from a closely layered member having its surface layer of copper or a copper or aluminum alloy closely layered on a back metal of steel or the like. The closely layered member is immersed in molten aluminum to dissolve therein the surface layer to separate it from the back metal, by which lead and/or tin is gathered under a molten aluminum or aluminum-copper layer and separated therefrom.

Growing community of inventors

Narashino, Japan

Toru Morimoto