High Strength Steel Sheet Stamping Technology Is The Future Development Direction

High strength steel is used in automobiles because of its excellent properties in yield ratio, strain hardening characteristics, strain distribution capacity and impact energy absorption. At present, the high strength steel used in automotive stamping parts mainly includes paint hardened steel (BH steel), duplex steel (DP steel), phase change induced plastic steel (TRIP steel) and so on. The International Ultra-Light Body Project (ULSAB) is expected to launch in 2010 advanced concept model (ULSAB - AVC) 97% of the material is high-strength steel, advanced high-strength steel in the vehicle material proportion will be more than 60%, and the proportion of duplex steel will account for 74% of automotive steel.
The mild steel series based on IF steel that is now widely used will be replaced by high-strength steel plate series, and high-strength low-alloy steel will be replaced by dual-phase steel and ultra-high strength steel plate. At present, the application of high-strength steel plates for domestic automotive parts is mostly limited to structural parts and beam parts, and the tensile strength of the materials used is mostly below 500MPa. Therefore, the rapid grasp of high-strength steel plate stamping technology is an important problem to be solved in China's automotive mold industry.