为了改进经济性与近终形(NNS)成形性，开发了无包套粉末挤压工艺与精压式粉末锻造工艺。
For improved economics and NNS (Near Net Shape) formability, encapsulation-free Powder Extrusion process and coining type Powder Forging process were developed.
利用主应力法求出接触面上的分布压应力，导出了平面精压长矩形板模具表面微凸面形状的解析公式。
The distributed pressure on the interface was obtained using the slab method. Analytic formula of the microconvex surface of plano-sizing die for long rectangular plate has been derived.
论述了精锻汽车差速器半轴齿轮原模具结构存在的问题，改进了锻造工艺和锻件设计，设计了新型粗锻模和精压模。
A new precision forming technology was presented, which uses an ordinary forging machine and a high precision rotary forging machine to make the closed-tolerance semi-axle bevel gear forgings.
论述了精锻汽车差速器半轴齿轮原模具结构存在的问题，改进了锻造工艺和锻件设计，设计了新型粗锻模和精压模。
A new precision forming technology was presented, which uses an ordinary forging machine and a high precision rotary forging machine to make the closed-tolerance semi-axle bevel gear forgings.
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