METHOD FOR MAKING PARTS BY POWDER METALLURGY PROCESS AND PART MADE BY SUCH METHOD Russian patent published in 2002 - IPC

Abstract RU 2181317 C2

FIELD: manufacture of pressed parts, possibly preliminarily sintered parts made of metallic powders and having compacted surface. SUBSTANCE: method comprises steps of pressing metallic powder and compacting surface of made part; pressing metallic powder along one axis; compacting surface by shot blasting of part or rolling it with sufficient intensity and time period necessary for making compacted surface layer in range 90-100% of total compaction and depth of deformation at least 0.2 mm; realizing if necessary additional stage of pressing part; before shot blasting or before rolling preliminarily sintering pressed part at temperature no less than 500 C. EFFECT: increased fatigue limit and surface hardness of sintered parts.10 cl, 1 tbl, 3 exp, 3 dwg

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RU 2 181 317 C2

Authors

Mors Ove

Karlbaum Nil'S

Dates

2002-04-20Published

1997-06-12Filed