论文部分内容阅读
一、变形在模具热处理中常发生尺寸和形状的变化,即变形,不仅影响模具尺寸精度,且影响耐用性。为提高模具热处理的质量,探讨热处理一般变形规律,寻求控制模具热处理变形的方法,是模具生产中的关键问题。1.产生变形的原因钢在加热和冷却过程中发生的组织转变,伴随有显著的体积变化。在淬火冷却时,发生的奥氏体—马氏体转变的体积变化最为强烈,因而可能形成的变形也最大。其次,钢
First, deformation In the mold heat treatment often occurs in size and shape changes, that is, deformation, not only affects the dimensional accuracy of the mold, and affect durability. In order to improve the quality of mold heat treatment, discuss the general rules of heat treatment, and seek ways to control the deformation of mold heat treatment, the key issues in mold production are discussed. 1. Causes of deformation The transformation of the steel that takes place during heating and cooling is accompanied by a significant volume change. During quench cooling, the most significant volume change occurs in the austenite-martensitic transformation and therefore the maximum possible deformation. Second, steel