论述了温挤压成形时存在模具磨损与挤出齿轮件头部凸的问题，分析了其产生的原因与造成的后果。
The existing questions of mould wear and the protruding head of spur gear during the warm extrusion are discussed and the reason and aftereffect are analyzed.
介绍温挤压工艺的特点、模具及其应用实例。
Introduces the character of warm extruding technique? Die and application examples.
以DF7C型内燃机车锻件中的杯形零件之一——气缸螺栓保护螺母为例，进行温挤压工艺研究，并据此设计出了成形模具。
Taking cylinder nut-protected bolt, one of the cup-shaped parts in the forging parts of DF7C gas engine, as an example, the warm extruding is researched, accordingly, the forming die is designed.
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