Glass manufacturing – Processes – With shaping of particulate material and subsequent fusing...
Patent
1982-09-01
1984-10-23
Schor, Kenneth M.
Glass manufacturing
Processes
With shaping of particulate material and subsequent fusing...
65 24, 65 32, 65 595, 264570, 425405H, C03B 1906, C03B 1909
Patent
active
044786263
ABSTRACT:
A method of hot isostatic pressing in which a shaped work immersed in molten glass is subjected to a hot isostatic pressing treatment, the method basically including embedding a shaped item to be worked on in glass powder filled in a crucible; loading the crucible into a movable heating furnace having a heater and a heat insulating structure; charging the furnace into an atmospheric chamber; adjusting the atmosphere in the chamber into a predetermined condition and heating the crucible by the heater to soften and melt the glass in the crucible; transferring the furnace from the atmospheric chamber into a high pressure container while maintaining a high temperature in the furnace; admitting a pressing gas medium into the high pressure container while raising the temperature of the furnace to let the work in the crucible undergo a hot isostatic pressing treatment; and upon completion of the hot isostatic pressing treatment, taking out the furnace from the high pressure container with the work still in loaded state in the heating furnace. In an alternate embodiment of the invention, a plurality of heating furnaces are provided. and more than one atmospheric chamber for a single high pressure container to realize efficient HIP operation with a markedly shortened cycle time.
REFERENCES:
Industrieanzeiger No. 93, Nov. 18, 1980, 102nd publ., p. 33, Verlag _W. Girardet of Essen, West Germany.
Fujikawa Takao
Miyanaga Junichi
Moritoki Masato
Kabushiki Kaisha Kobe Seiko Sho
Schor Kenneth M.
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