一、试验目的轴承钢碳化物网状和球化组织一直是生产检验的主要问题之一。本试验主要目的是探讨热轧材组织和正火处理后,对碳化物网状和球化组织的影响,从而确定合适的正火温度,使之既能消除碳化物网状又能保证细小而均匀的球化组织。二、试验方法 1.试验用料的选择和试样的制备试验用钢为电炉GCr15,规格为φ15、φ23mm和φ48mm热轧棒材,其化学成分见表1。因生产中不易出现厚碳化物网、大晶 First, the purpose of the test Bearing steel mesh carbide and spheroidization organizations has been one of the main problems of production testing. The main purpose of this experiment is to investigate the effect of hot-rolled material and normalized steel on the reticular and spheroidized structure of the carbide so as to determine the suitable normalizing temperature so as to not only eliminate the carbide mesh but also ensure the fine and uniform Of the ball organization. Second, the test method 1. Selection of test materials and sample preparation Test steel for the electric furnace GCr15, specifications for φ15, φ23mm and φ48mm hot-rolled bar, the chemical composition shown in Table 1. Due to the production of thick carbide network is not easy, big crystal