Core of large roller cold upsetting die made of ld steel has more ideal hardness, strength, anti wear capacity and impact toughness.
采用LD钢制造大型滚子冷镦模具的模芯，具有较理想的硬度、强度、耐磨性和冲击韧性。
2
Carburizing and quenching, with high surface hardness, good toughness characteristics, the heart of cold plastic deformation of medium, cutting is good.
经渗碳及淬火后，具有表面硬度高、心部韧性好的特点、冷变形塑性中等，切削加工性好。
3
The weldability of TCS corrosion resistant stainless steel for railway wagon was investigated by cold cracking sensitivity test, HAZ maximum hardness test and varestraint test.