热锻模要求具有一定的硬度,较高的冲击韧性。对于锻模钢要求具有较高的淬透性和导热性,所以,经常采用5CrNiMo、5CrNiW、5CrMnMo等钢材来制造锻模。但是,这些合金钢不但贵重而且是供不应求,因此有些厂就用45钢来代替。我厂通过几年来的实践证明:用45钢做热锻模,只要通过合理的热处理方法,完全能使它接近于热锻模的性质。现将我们的热处理 Hot forging die requires a certain hardness, high impact toughness. Forging die steel requires high hardenability and thermal conductivity, therefore, often using 5CrNiMo, 5CrNiW, 5CrMnMo and other steel to make forging die. However, these alloys are not only expensive but also in short supply, so some plants use 45 steel instead. I plant through years of practice has proved that: with 45 steel for hot forging die, as long as the reasonable heat treatment method, can make it close to the nature of the hot forging die. Now our heat treatment