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US4558499A Method of making a mold frame 失效
制作模架的方法

Method of making a mold frame
摘要:
A method of making a mold frame is disclosed. A plurality of rows of cavities are formed in a mold plate. The cavities of each row are interconnected by a bore. The row bores are interconnected by cross bores. The cross bores are selectively sealed off so that a cooling medium going through the mold frame follows a serpentine path.
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