Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METAL MOLD CASTING METHOD AND ITS DEVICE
Document Type and Number:
Japanese Patent JPH0740032
Kind Code:
A
Abstract:

PURPOSE: To provide a metal mold casting method and its device, in which casting defect is not developed even not in high vacuum.

CONSTITUTION: In this die casting method, the molten metal 7 is filed up into a cavity 3 which is made to be in the condition of reduced pressure hydrogen atmosphere, and pressurized and solidified, and a hydrogen introducing means 5 for supplying the hydrogen into the cavity 3 is attached to the metallic mold casting device composed of a vacuum die casting device or a vacuum casting device. The reduced pressure hydrogen atmosphere is made by introducing the hydrogen into the cavity 3 and the molten metal 7 is filled up into there and pressurized and solidified. As the hydrogen is dissolved into the molten metal 7 in the high pressure even if the hydrogen is entraped in some degree, the casting defect is not developed. The high vacuum can be made to be the low vacuum by introducing the hydrogen, and the casting cycle time can be shortened.


Inventors:
OTA ATSUSHI
ARAKAWA YASUYUKI
Application Number:
JP18629493A
Publication Date:
February 10, 1995
Filing Date:
July 28, 1993
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
TOYOTA MOTOR CORP
International Classes:
B22D17/00; B22D17/14; B22D18/02; B22D18/06; B22D23/00; (IPC1-7): B22D18/06; B22D17/00; B22D17/14; B22D18/02; B22D23/00
Attorney, Agent or Firm:
田渕 経雄



 
Next Patent: PRODUCTION OF ROCKER ARM