The densification effects of upsetting and repressing are compared, and a technology design principle for closed die forging is suggested .
分析了粉末烧结材料镦粗和复压工艺的致密效果，提出了闭式模锻工艺设计原则。
The advanced technology for producing these kind of forgings which are similar to full fi-bers crankshaft forging on a general forging press is upsetting and offsetting operation.
在通用压机上生产类似全纤维曲轴一类锻件的先进工艺为多向镦锻法。
This article has described the RR bending and upsetting process for crankshaft forging of the medium and high speed diesel engine.
简要介绍了中高速柴油机曲轴锻件的RR弯曲镦锻工艺。
The upsetting test of metal powder sintered preform by blow speed of the hydraulic press, crank press, pneumatic hammer and high energy rate forging hammer was reported.
研究了用液压机、曲柄压力机、空气锤及高速锤的打击速度对粉末冶金烧结体进行的镦粗试验。
The results show that the upsetting deformation law of sintered preform is alike with the compact body, and the crank press is the best equipment of powder forging technology.
结果表明：烧结体的镦粗变形规律与致密体相同。指出了曲柄压力机是粉末锻造工艺的最佳设备。
The deformation law of both solid and local upsetting processes for cylinder forging is investigated by moire method at room temperature and numerical simulation in this paper.
本文用常温云纹法与数值模拟法研究了筒体锻件整体镦粗与局部镦粗工艺的变形规律，得到了整体镦粗工艺的坯料尺寸图。
For a heavy forging with bulge, the upsetting-extruding process can be adopted.
对带凸台的大型饼类锻件，可采用漏盘镦挤工艺进行生产。
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。
Based on summing up different kinds of technological process of precision forging of spur gear, a new upsetting extrusion process and pattern die are designed.
在总结各种直齿圆柱齿轮精锻工艺的基础上，设计了一种直齿圆柱齿轮镦挤精锻工艺和模具，并进行了实验和上限模拟。
A mechanics model of the forging machinery producing process is established. The relationship between upsetting force, the product quality and the mould state during producing process is analyzed.
建立锻压机械加工过程中的力学模型，分析作用力与产品质量、模具状态之间的关系。
A mechanics model of the forging machinery producing process is established. The relationship between upsetting force, the product quality and the mould state during producing process is analyzed.
建立锻压机械加工过程中的力学模型，分析作用力与产品质量、模具状态之间的关系。
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