发明名称 |
METHOD OF PRODUCING LOW-POROUS POWDER MATERIALS |
摘要 |
<p>powder metallurgy, particularly, production of iron-base powder materials infiltrated with copper alloys. SUBSTANCE: method includes formation of two-layer porous powder intermediate product by filling mold with base powder and its premolding under pressure of 50-400 MPa and subsequent filling of low-melting material in amount of 15-25% of base material weight and final pressing, sintering combined with impregnation. Low-melting material of surface layer of two-layer intermediate product is used in the form of chip wastes of copper-base nonferrous alloys. Pressure of final pressing of two-layer intermediate product is 600-800 MPa. EFFECT: reduced cost of production of composite materials with utilization of chips of nonferrous metals. 3 dwg, 4 ex</p> |
申请公布号 |
RU2167741(C2) |
申请公布日期 |
2001.05.27 |
申请号 |
RU19990112620 |
申请日期 |
1999.06.08 |
申请人 |
JUZHNO-ROSSIJSKIJ GOSUDARSTVENNYJ TEKHNICHESKIJ UN;IVERSITET |
发明人 |
DOROFEEV JU.G.;SERGEENKO S.N.;GANSHIN A.V. |
分类号 |
B22F3/26;B22F8/00;(IPC1-7):B22F3/26 |
主分类号 |
B22F3/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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