【摘要】 本文研究了用TLMW50钢结硬质合金制造有色金属冷挤压冲头的锻造工艺和表面改性渗硼强化处理工艺。试验结果表明,与原熔炼钢制冲模比,使用寿命提高20～30倍,技术经济效益十分显著。更多还原

【Abstract】 The paper has studied the forging process and surface modification process(boronizing) of TLMW50 steel bonded carbide extrusion stem.The results show that the service life is 20～30 times higher than the steel stem,and improving economic performance greatly.更多还原