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研究了水韧处理对三种壁厚(10、20和30 mm)高锰钢铸件组织和性能的影响。结果表明:高锰钢经水韧处理后,其硬度值略有降低,但冲击韧度显著提高;随保温时间的延长,其硬度值减小,冲击韧度增大;随铸件壁厚的增加,其硬度值变化不大,但冲击韧度略有降低。往复直线干摩擦磨损试验结果表明:试样硬度越高,其耐磨性能越好;随载荷的逐渐增大,高锰钢试样的磨损质量损失逐渐增大,而摩擦系数逐渐减小;经过水韧处理过的高锰钢试样,其磨损质量损失和摩擦系数均大于未经水韧处理的高锰钢试样,并且随铸件壁厚的增加而增大,其摩擦系数也随磨损时间的延长而逐渐增大。
The effect of water toughening on the microstructure and properties of three kinds of high manganese steel castings with wall thickness (10, 20 and 30 mm) was studied. The results show that the hardness value of high manganese steel decreases slightly after water toughening, but the impact toughness increases remarkably. With the increase of holding time, the hardness decreases and the impact toughness increases. With the increase of casting wall thickness , Its hardness value changes little, but the impact toughness reduces slightly. Reciprocating linear dry friction and wear test results show that: the higher the hardness of the sample, the better the wear resistance; With the gradual increase in load, high manganese steel sample wear mass loss gradually increased, while the friction coefficient decreases gradually; After The water-toughened high-manganese steel samples have higher wear mass loss and friction coefficient than the high-manganese steel samples without water-toughening and increase with the increase of the wall thickness of the castings. The friction coefficient also varies with the wear time The extension of the gradual increase.