Stock material or miscellaneous articles – All metal or with adjacent metals – Having metal particles
Patent
1987-06-30
1988-05-10
Lechert, Jr., Stephen J.
Stock material or miscellaneous articles
All metal or with adjacent metals
Having metal particles
75236, 75246, 75248, 149 5, 149 6, 149 17, 149 30, 149 31, 149 32, 149 38, 149 43, 149 44, 149 47, 149 56, 428636, 428637, B22F 300
Patent
active
047435127
ABSTRACT:
A method of manufacturing a flat form from blended metallic powder including a major constituent by weight having a high melting point and a minor constituent by weiht having a substantially lower melting point includes selection of the powder to provide continuous and reproducible compacted flat forms. Powder is selected on the basis of compressibility and flowability. The selected powder is compacted to a flat green form and then liquid phase sintered. The flat form may be stacked to provide a flat article of a desired thickness which will result in a monolithic or composite cross section when subsequently sintered. Liquid phase sintering is carried out in a manner designed to avoid undesirable embrittlement and to provide a uniform microstructure in the fully consolidated article. The process is especially useful in the production of tungsten heavy alloy plate.
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Burns, II William J.
Carnes Robert E.
Del Corso Gregory J.
Esposito David
Holland Edward F.
Carpenter Technology Corporation
Lechert Jr. Stephen J.
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