通过销盘磨损试验,研究了在两体磨损条件下,两种高速钢轧辊材料在不同回火条件下的抗磨损性能.结果表明,淬火温度较低时,高速钢无回火二次硬化现象;而淬火温度较高时,淬火组织中残留奥氏体增多,回火冷却时转变为马氏体,使钢获得硬化.普通高速钢经1050 ℃淬火+530～560 ℃回火后,耐磨性好,用钛和稀土镁合金处理的高速钢经1040℃淬火+520～540 ℃回火后,耐磨性好.相同磨损条件下,钛和稀土镁合金处理高速钢的磨损量一般低于普通高速钢.
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