此文介绍了连续挤压内凸筋口琴管模具的设计方法及其模具芯头的冷挤压加工。
This paper is about die tongue making: the design method and cold-press formation.
H112铝合金口琴形扁管是制造全铝管-带式汽车空调器的又-新型铝合金材料。
D97-H112 aluminium alloy harmonica-shape flat tube is a new type aluminium alloy material used for making the automotive air-conditioners in the tube-band type.
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