【摘要】 利用液体渗硼对７０Ｍｎ１５Ｃｒ２Ａｌ３ＶＷＭｏ钢制成的无磁模具进行处理．结果表明，其表面形成了Ｆｅ２Ｂ，硬度达ＨＶ１４５０，耐磨性提高５倍以上，磁导率为１２５８μＨ／ｍ，模具的使用寿命提高３倍以上．更多还原

【Abstract】 The nonmagnetic mould made of 70Mn15Cr2Al3VWMo was processed by boronization in the melt state. The result showed that:Fe 2B was formed on its surface,its hardness up to HV1450,its wear resistance improved by 5 times,its magnetoconductivity 1 258μH/m,and its service life prolonged to 3 times or more.更多还原