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前言碳钢经渗硼后具有高硬度(Hv1200～2000),高耐磨性和较高的疲劳强度。渗硼法在各种工模具中得到了广泛的应用。我厂所采用的低碳化硼膏体渗硼法的主要特点是碳化硼含量低(仅10%)、渗硼时可不加任何填充料、设备简单,普通箱式炉便可渗硼,渗剂翻新后可连续用多次,更可贵的是能够获得含少量 FeB 的硼化二铁(Fe_2 B)相渗硼层。根据我厂十年来对无缝钢管冷拔模具以及铸钢轧辊的渗硼实践证明,冷拔模渗硼后较气体渗碳寿命提高约5倍,而70Mn_2 铸钢轧辊渗硼
Preface Carbon steel after boronizing with high hardness (Hv1200 ~ 2000), high wear resistance and high fatigue strength. Boronizing method in a variety of mold has been widely used. Low boron carbide used in our plant boronizing method is characterized by low boron carbide content (only 10%), boron can be added without any filler, the device is simple, common box furnace can be boron, penetration agent After renovation can be used several times, more valuable is to be able to obtain a small amount of FeB containing boric acid two iron (Fe 2 B) phase boronizing layer. According to our factory ten years of seamless steel pipe drawing dies and cast steel roller boring practice proved that after cold drawn carburizing gas carburizing life expectancy increased by about 5 times the 70Mn_2 cast steel roller boron