Standard parts, fasteners of hot upsetting, such as high strength bolts, nuts and so on.
标准件、紧固件的热镦，如高强度螺栓、螺帽等。
The process design of seamless pipe hot upsetting-extruding method for making flange was introduced.
介绍了采用无缝钢管热镦挤法兰突缘的工艺设计。
Die structure was discussed through the analysis of forming process of high intension screw bolt and a set of hot upsetting tool was designed.
通过分析高强螺栓的成形工艺，对模具结构进行深入探讨，设计了一套热镦模。
The critical reduction for closing the pores in the center of cylinder forgings undergoing hot upsetting are numerically simulated by using thermomechanical coupled finite element method.
采用大变形热力耦合有限元法模拟了圆柱体锻件心部空洞的热锻闭合压下率。
The precision forging process for the steering sector gear shaft is discussed in the paper. The principle and the path of forming of the hot extruding and upsetting are also discussed.
介绍了热挤镦加热精整汽车转向机摇臂轴精锻成形工艺，对热挤镦的成形原理及变形过程进行了分析探讨。
The precision forging process for the steering sector gear shaft is discussed in the paper. The principle and the path of forming of the hot extruding and upsetting are also discussed.
介绍了热挤镦加热精整汽车转向机摇臂轴精锻成形工艺，对热挤镦的成形原理及变形过程进行了分析探讨。
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