【摘要】 研究了20、45、T10,GCr15和Cr12钢在石墨流态床中不装箱保护直接膏剂渗硼的工艺。通过正交试验获得了最佳膏剂配方和工艺参数,探讨了石黑流态床渗硼机理。研究发现,无论是高碳钢还是高碳合金钢均可获得具有良好齿形的单相Fe₂B组织;钢中碳含量对Fe₂B（002）晶面择优取向影响不大,而铬含量增加则降低Fe₂B（002）晶面的择优取向。更多还原

【Abstract】 An investigation on the uncased direct boroning processes of 20, 45, T10, GCrl5 and Crl2 steels in graphitic fluidized bed was made. By way of optimizing tests with orthogonal design, both paste agents and processing parameters were determined. The mechanism of boroning in graphitic fluidized bed was also dealt with. It was found that, whether in high carbon or high alloy steels, a monophase layer of Fe2B with fine tooth patter occured. The carbon content in the steels had little effect on the selective orientation of Fe2B [002] plane. But the higher the chromium concentration , the lower the selective orientation of Fe2B[002] plane. Boroning using this method is faster. It is easy to operate and feasibl to quench, saves raw materials and energy, has the potential of commercial practical use.更多还原