Title:
歯科技工用反転式加圧鋳造方法及びその装置
Document Type and Number:
Japanese Patent JP4245212
Kind Code:
B2
Abstract:
While rotating a chamber 10 with a crucible 18 for heating ingots 28 of metal and a mold 23 for receiving molten metal from the crucible 18 enclosed therein from a normal position to a reversed position, when an arrival of the chamber 10 at a preset reference position is detected by a rotary plate 36 and a position sensor 37, a pressure gas is introduced into the chamber 10 at a time point delayed from the reference position by a preset delay time. The delay time is preset so that the pressurize gas starts pressing the molten metal into a sprue runner 26 immediately after a mouth of the sprue runner 26 is completely closed by the molten metal poured from the crucible 18. Thus, the molten metal is promptly pressed through the sprue runner 26 into a cavity 27 of the mold 23 before it starts solidifying due to the contact with the mold 23 having a temperature lower than that of the molten metal.
Inventors:
Masaki Usui
Application Number:
JP35406298A
Publication Date:
March 25, 2009
Filing Date:
December 14, 1998
Export Citation:
Assignee:
Denken Co., Ltd.
International Classes:
B22D23/00; A61C13/20; B22D27/09; B22D33/02; F27B14/10
Domestic Patent References:
| JP3008256Y2 | ||||
| JP58004548A | ||||
| JP7132363A | ||||
| JP8112297A | ||||
| JP3104312U |
Attorney, Agent or Firm:
Ryouhei Kobayashi