冷镦头剧烈变形能力与合金组织、塑性和剪切强度关系较大。
Big deformability was more related with its microstructure, plasticity, and shear strength.
高速镦头机：具有比旧式镦头机更快滚子加工速度的新型冷锻设备。
HIGH SPEED HEADER: Newer type of cold forging machine which produces rollers at a faster rate than the old style machine.
冷镦圆头凹模是冷镦螺栓生产过程中的关键模具。
Cold upset female die of fillister head is the key mold in the manufacturing process of heading bolt.
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