casting defect

Japanese: casting defect(英語表記)castingdefect
casting defect

...The solidification process is simulated using the obtained values, directional solidification is performed, and a supply of molten metal is ensured, thereby considering casting methods to produce castings free of defects such as cavities and pinholes caused by solidification shrinkage.
[Casting defect]
Casting involves the transformation of metal from liquid to solid, as well as processes such as molding, melting, and pouring, so various defects are likely to occur. The production of defective products is said to be "becoming a Buddha." This expression is said to have originated from the fact that when casting Buddha statues, if the molten metal does not circulate around the halo, the statue will end up looking like a Buddha statue without a halo.

*Some of the terminology that refers to "casting defect" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…得られた値から凝固のようすをシミュレーションし,方向性凝固を行わせ,溶湯の補給を保証するなどして,凝固収縮による巣やピンホールなどの欠陥のない鋳物をつくるための〈鋳造方案〉を検討している。
[鋳造欠陥casting defect]
 鋳造は金属の液体から固体への相変態を伴い,造型,溶解,鋳込みなどの工程を伴うので,さまざまの欠陥が発生しやすい。欠陥品ができることを,〈お釈迦になる〉というが,これは仏像を鋳物で作る際に,光背に溶湯が回らないと光背がない釈迦像のようになってしまうということから生まれた言い回しともいわれる。…

※「casting defect」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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