To provide a method by which distortion of a casting including a relatively low rigidity portion can be easily and surely adjusted, using simple constitution.
A distortion adjustment method of a casting 1 is provided for adjusting the distortion of the casting 1 including a relatively low rigidity portion LR and a high rigidity portion HR. In the method,, a large contraction amount adjusting casting plan 7a which has a relatively large contraction amount caused by a temperature drop to the ordinary temperature from a mold release is provided between a region of the relatively low rigidity portion LR being distorted so as to be deformed in a direction (upward in (a) of Fig.1) in which the portion separates from the high rigidity portion HR and the relatively high rigidity portion HR, and a small contraction amount adjusting casting plan 7b which has a relatively small contraction amount caused by the temperature drop to the ordinary temperature from the mold release is provided between a region of the relatively low rigidity portion LR being distorted so as to be deformed in a direction (downward in the (a) of the Fig.1) in which the portion approaches the high rigidity portion HR and the relatively high rigidity portion HR.
| JPS59148150U | 1984-10-03 | |||
| JPS6160260A | 1986-03-27 | |||
| JPH02217133A | 1990-08-29 |
Miyazaki Yoshio
Kaoru Onozuka
Akio Tagami
High Masahiro
Tsutomu Kato
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