Numerical simulation technique has become the important verifying tools in extrusion and forging die shape design. It helps designers to know the design parameters space better.

数值仿真技术已成为挤压锻造模具设计中的重要评价手段，有助于设计人员更好的理解设计空间。

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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.

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。

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The article has described substance, characteristic, methods and die types of closed extrusion-die forging, and it has enumerated the typical die construction figures of closed extrusion die forging.

叙述了闭式挤锻的实质、特点、方式及模具型式，列举了典型闭式挤锻模具结构图。

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