The grain size of die steel has no significant effect on static drawing performance (ób, ó0.2, δ, ψ) and hardness. However, coarse grains will reduce the impact toughness, reduce crack propagation work, and improve cold and brittle areas. As the crystal grains grow, the K1C value increases. The larger the grain size, the greater the tendency of quenching and cracking of die steels, which must be taken into account when optimizing the quenching process. In particular, mixed crystals will dramatically reduce the structural strength of the steel and make the stress concentration area brittle.
Steel House,Steel Frame Homes,Metal Homes,Steel Building Homes
Guangdong Tianchen Steel Structure Engineering Co. Ltd. , https://www.tcsteeltech.com