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.
从锻件的材质、锻造工艺参数、锻模温度、热处理工艺参数四个方面，阐述了铝合金模锻件粗晶缺陷的产生原因及消除措施。
The article discusses causes and eliminated measures of aluminium alloy die forgings crassitude crystal from four sides of component, technical parameter, temper of die and heat treatment.
通过改进预锻模膛的设计，利用镦粗成型、反挤成型的原理，有效解决了130转向节板部模锻成型时充不满的问题。
By improving the design of forging die and using press-forging and backward extrusion principle, solves the problems of 130 steering knuckle forming which can not be fully filled during forming.
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