目前国内在冲压模具上使用的铸铁材料,基本上有二类。一类是灰口铸铁,HT25-47等,主要被用于做模具的上、下底板。另一类是合金铸铁。有Ni-Cr铸铁,Mo-Cr铸铁等,由于合金铸铁能够进行表面淬火(表面火焰淬火,水冷,硬度可达HRC50),所以基本上被用来做大批量生产用的拉延模,成形模的凸模、凹 Currently used in the stamping die cast iron materials, there are basically two categories. One is gray cast iron, HT25-47, etc., are mainly used to do the mold on the floor. The other is alloy cast iron. There are Ni-Cr cast iron, Mo-Cr cast iron, etc. Since cast iron can be surface-hardened (surface flame quenching, water cooling, hardness up to HRC50), it is basically used for high-volume production drawing dies and forming dies The punch, concave