一种新的大方管铝型材挤压模结构

A new extrusion die structure for big square tube profiles of Al- alloy

介绍了传统大方管铝型材挤压模过早失效的原因。详细分析了传统大方管挤压模的结构特点。提出了一种新的模具结构,阐述了这种模具结构的组成要素,说明了有关主要结构参数的选择,描述了这种新的结构的优点。通过对新旧模具结构的使用结果对比,表明了这种新的模具结构是有效的,是具有明显优势的,能大大提高模具的寿命,是一种值得推广的模具结构。目的在于向同行推广这一技术和这种新的模具结构,为广大设计者提供可靠、有效的参考。

The factors on premature failure of the traditional extrusion die for the big square tube profiles were intro- duced, and the characteristics of the conventional structure were analyzed. A new type of hollow die structure for these profiles was presented, and the composition elements of the new die structure were de- scribed, including its advantages. According to the comparison conventional with new die structure in use, it was shown that the new die structure has obvious advantages, it could greatly improve the die life. This is a type of die structure which is worth promoting. The aim is to extend the technology and the new die structure and provide reliable and valid reference data for the designers.