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苏联国内外企业的研究和实践都表明,在缸套表面热强化诸方法中,激光淬火具有一系列的优越性,它可在广泛的范围内采用不同的照射零件表面规范的方法,使变形量及加工余量均为最小。实验室和台架试验都能够评价照射规范和淬火硬化带的分布对铸铁缸套的抗磨性、抗擦伤性及机械性能的影响。业已判明,强化带的最佳组织为马氏体一奥氏体一碳化物相,其硬度范围在HV500～950之内。但是对强化层组织和硬度的这
The research and practice of domestic and foreign enterprises in the Soviet Union all show that laser quenching has a series of advantages in the methods of thermal strengthening on the surface of cylinder liner. It can use different methods for irradiating the surface of parts in a wide range so that the deformation And the processing margin are the smallest. Laboratory and bench tests are capable of evaluating the impact of irradiation regulations and the distribution of quench hardened tape on the wear resistance, scratch resistance and mechanical properties of cast iron liners. It has been found that the best organization strengthening zone martensite-austenite-carbide phase, the hardness range of HV500 ~ 950 within. But on the strengthening of the organization and hardness of this