中碳结构钢在制造结构零件时一般需要经过调质处理,因此生产周期比较长。怎样使调质处理的延续时间尽量缩短是我们这次试验的主要目的。在快速加热法的基础上,我们对40×45钢的高溫回火运用了提高回火溫度的瞬时回火的方法。40X钢的化学成分为:0.4%C;0.9%Cr;0.62%Mn;0.26%Si;≤0.03%S,≤0.035%P。以此成分制成二 Carbon structural steel in the manufacture of structural parts generally require quenched and tempered, so the production cycle is longer. How to make the quenching and tempering process as short as possible to extend the duration of the main purpose of this test. On the basis of the rapid heating method, we applied the method of improving the tempering temperature at the high temperature tempering of 40 × 45 steel. The chemical composition of 40X steel is: 0.4% C; 0.9% Cr; 0.62% Mn; 0.26% Si; ≤ 0.03% S, ≤ 0.035% P. Made from this ingredient two