镦<名>矛戟柄末的平底金属套。同“錞” 镦 <动>冲压金属板，使其变形。不加热叫“冷镦”,加热叫“热镦”阉割。镦 duì矛戟柄下端的平底金属套。又见dūn。
减小长度、增加横截面，称为镦粗金属。
Decrease length, increase cross-section, called upsetting the metal.
本文介绍了先进的TR镦锻法制造曲轴毛坯的工作原理。
The paper introduces the working principle in making crankshafts by using advanced tr upsetting.
简要介绍了中高速柴油机曲轴锻件的RR弯曲镦锻工艺。
This article has described the RR bending and upsetting process for crankshaft forging of the medium and high speed diesel engine.
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