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公开(公告)号:US4656002A
公开(公告)日:1987-04-07
申请号:US783555
申请日:1985-10-03
CPC分类号: B22F3/156 , B22F3/1216 , B22F3/1225 , B22F3/125 , B22F3/15 , B30B11/001 , B22F2998/00
摘要: A preformed body (12) from powder material of metallic and nonmetallic compositions and combinations thereof, is consolidated to form a densified compact (12") of a predetermined density. An outer container mass (20), capable of fluidity in response to predetermined forces and temperatures and which is porous to gases at lesser temperatures and forces than said predetermined force and temperature, surrounds an internal medium (22). The internal medium encapsulates the preformed body (12) within the container mass (20) and is capable of melting at the lesser temperatures to form a liquid barrier to gas flow therethrough. The internal medium (22) is capable of rapid hermetic sealing during the early stages of preheat. External pressure is applied by a pot die (16) and ram (14) to the entire exterior of the container mass (20) to cause the predetermined densification of the preformed body (12) by hydrostatic pressure.
摘要翻译: 将来自金属和非金属组合物及其组合的粉末材料的预成形体(12)固结,以形成预定密度的致密的压坯(12“)。 围绕内部介质(22)的外部容器质量(20)能够响应于预定的力和温度而具有流动性,并且在比较小的温度和比所述预定的力和温度更低的温度下对气体是多孔的。 内部介质将预制体(12)包封在容器质量(20)内,并且能够在较低温度下熔化以形成液体阻挡气体流过其中。 内部介质(22)能够在预热的早期阶段快速密封。 通过罐模具(16)和冲头(14)将外部压力施加到容器质量块(20)的整个外部,以通过静水压使预成形体(12)预定的致密化。