Sand core for the blade was made by hand drawing the pattern from core box. The way of core making is feasible on a medium scale production.
采用线切割的方法制作涡轮叶片砂芯芯盒，用该芯盒手工起模制作叶片砂芯。
Sand core for the blade was made by hand drawing the pattern from core box. The way of core making is feasible on a medium scale production.
采用线切割的方法制作涡轮叶片砂芯芯盒，用该芯盒手工起模制作叶片砂芯。
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