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在模拟犂锌磨损试验机上对等温淬火及通常淬火回火后内四种钢材作了耐磨性能的研究。结果表明:淬火后经不同温度回火的试样,在同样硬度下,其耐磨性依у10,65г,65,л53次序递减。同种材料在一定硬度以下,其耐磨性和硬度成直线关系。经等温处理的试样耐磨性也依у10,65г,65次序递減。等温处理的试样比普通淬火回火的试样在相同硬度下有较高的耐磨性,尤其是65г在M_H 点以下一定温度等温处理其耐磨性更高。残余奥氏体含量在一定范围内有利于提高耐磨性,且耐磨性随其含量的增加而增加,越过此范围则钢的耐磨性下降。少量合金元素锰加入钢中,对提高耐磨性有利。根据实验室试验结果看来,65г钢作犂铧材料比较合适,等温淬火处理是犂铧热处理有希望的工艺方向,并提出了改进等温处理工艺的意见。从对试验结果分析看来,机件磨粒磨损不是单一过程,而可能是显微切削与疲劳脆裂的综合过程。
Zinc wear on the analog plow test machine isothermal quenching and quenching and tempering after the four were made of steel wear resistance. The results show that after quenching, the samples tempered at different temperatures show the same wear resistance, decreasing in order of у10, 65г, 65, л53. The same kind of material below a certain hardness, its wear resistance and hardness into a linear relationship. After isothermal treatment of the sample wear resistance also according to у10,65г, 65 decreasing order. Isothermal treatment of the sample than the ordinary quenching and tempering of the sample at the same hardness under higher wear resistance, especially 65г M_H below the point in the temperature isothermal treatment of its higher wear resistance. Residual austenite content within a certain range is conducive to improving the wear resistance, and wear resistance increases with its content increases, beyond which the wear resistance of steel decreased. A small amount of alloying elements manganese added to the steel, to improve wear resistance. According to the results of laboratory tests, 65-г steel is suitable for plowshare material. Isothermal quenching is a promising process direction for plowshare heat treatment, and suggestions for improving the isothermal treatment process are put forward. From the analysis of the test results, mechanical abrasive wear is not a single process, but may be micro-cutting and fatigue embrittlement of the integrated process.