step gating system
...阶梯式浇注系统 [gap=1305]Key words: technology and equipment of casting; large steel casting; filling; step gating system ...
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根据均衡凝固理论设计工艺，采用阶梯式浇注系统，压边冒口和冷铁，取得了满意效果。
The foundry method was designed based on the Proportional solidification theory. Step gating system, connor risers and chills were adopted. Successful result was obtained.
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