热挤压的一次成形技术概述

Discussion on Once-Forming Technology of Hot Extrusion

一次成形挤压是一种先进的热压力加工工艺。当金属材料经加热挤压后,细化了其内部晶粒,加强了金属的细密度,是对金属零件无切削的加工方法之一,能极大地提高产品的质量、生产效率和经济效率。对金属的流动状态、力学性能、冲压力等诸多方面进行了研究和分析。完全可以通过热处理、冷却、加热温度、润滑等措施的严格控制来防止制件过程中产生的缺陷。因而大大地提高了产品的质量,使一次成形挤压工艺得到了广泛的应用。

Once -forming hot extrusion is an advanced heat press technology,which refines inner crystalline grain of metallic materlal and reinforces the density after hot extrusion. It is one of no - cutting machining method for metal hardware, which promotes the quality of product and the efficiency of manufacture and economy. After analyzing the flow state, the mechanical properties and the punch force such factors of metal, the paper gets the conlusion that the defects of product can be diminished by those measures,including heat treatment,ccoling,temperature controlling and lubricating. The fruit of this research will enhance the quality of product and boost the applications of once - forming hot extrusion.