焼結接合による金属粉末と溶製材との組合せ材に関する研究

概要

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In the conventional die-compaction of a thin and long pipe-shaped machine component such as a shaft guide, density distribution is nonuniform because of the friction between the powder and the die wall. To overcome this disadvantage, the sinter bonding method of powder and solid metal is applied. Iron powder with additions of copper and carbon powders, and a steel pipe are placed concentrically in a closed-die and are compressed together. The powder is compacted not only axially by the punch but also radially by the solid metal which deforms incompressibly. Bonding between the powder and the solid metal is carried out during the sintering process. The density distribution in the composite performs is fairly uniform in spite of the thin and long shape. The bond strength is high at the midlength of the composite performs and low at both of their edges. The dependence of the bond strength on the added powders is explained by the maximum dimensional changes of the powder compact and of the steel which occur during sintering.
一般社団法人日本機械学会の論文
1991-03-25