Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Heat and pressure simultaneously to effect sintering
Patent
1982-10-21
1986-04-15
Schofer, Joseph L.
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Heat and pressure simultaneously to effect sintering
419 48, 419 54, 419 55, 419 57, 419 42, 425405H, 264 57, 264 58, 264 66, 264 85, 264517, B22F 312, C22D 102
Patent
active
045826811
ABSTRACT:
A hot isostatic pressing system including a hot isostatic pressing station having a high pressure container constituted by a vertical pressure-resistant cylinder closed at the top end thereof and a lower lid detachably fitted to the bottom of the pressure resistant cylinder and a treating chamber internally provided with a heater and enclosed by a heat insulating wall, and a mechanism for adjusting an atmospheric gas pressure and temperature of the pressing station into a condition suitable for the hot isostatic pressing of a work item accommodated in the treating chamber; a plurality of auxiliary stations each provided with an opening for receiving from beneath thereof the heat insulating wall of the treating chamber accommodating the internal heater and a work item, a support structure for supporting the heat insulating wall, and a mechanism for cooling the work item and internal heater in an inert gas atmosphere; a carriage for transferring the lower lid and work item or the lower lid, work item, heat insulating wall and internal heater between the hot isostatic pressing station and one of the auxiliary stations; and a lift mechanism for lifting up and down the lower lid and work item or the lower lid, work item, heat insulating wall and heater at the hot isostatic pressing station and each one of the auxiliary stations.
REFERENCES:
patent: 3893852 (1975-07-01), Bergman et al.
patent: 4359336 (1982-11-01), Bowles
patent: 4448747 (1984-05-01), Moritoki et al.
Asari Akira
Fujikawa Takao
Inoue Yoh-ichi
Matsuura Shiro
Miyanaga Junichi
Kabushiki Kaisha Kobe Seiko Sho
Schofer Joseph L.
Teskin Fred M.
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