从分析单根薄壁管弯制工艺措施在薄壁管排成排弯上的应用的可行性入手，讨论了水冷壁薄壁管排的无梳形弯模下的成排弯工艺方法。

From aspect of applicability of single thin-wall tube bending measures in tube panel bending, panel bending procedure using cylinder bending die for water wall is discussed.

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研究了一种利用蒸汽加热和冷却水冷却的变模温注塑工艺，制定了其工艺流程。

A variotherm injection molding technique with steam heating and coolant cooling was studied and its molding process was also designed.

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使用制冷机冷却压蜡模具比水冷却法效率高，劳动条件好，提高了蜡模表面粗糙度。

To cool the pattern injection die by refrigerator is more efficient than by water cool, and it provides better working conditions and improves the surface degree of finish of the wax pattern.

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