一、前言风扇磨煤机是常用的高速磨煤机,广泛应用于电力、冶金系统。其主要磨损件冲击板,通常用高锰钢制造。由于在中、低冲击载荷磨损条件下工作的高锰钢零件,难以发挥其加工硬化的特点,故耐磨性并不高。因而造成钢材大量耗损,检修工作量大。还会使发电出力降低。为了提高在中、低冲击载荷工况条件下奥氏体锰钢的耐磨性,国内外学者做了大量试验研究工作,采用多种方法来强化奥氏体基体,增加抗磨质点,提高加工硬化速率等。本试验研究包括:减少含锰量(降至6～9％),以降低奥氏体的稳定性,提高加工硬化速率;适当提高含碳 I. Introduction Fan mill is commonly used high-speed coal mill, widely used in electric power, metallurgical systems. Its main wear parts impact plate, usually made of high manganese steel. Due to the medium and low impact load wear conditions of high manganese steel parts, it is difficult to play its work hardening characteristics, so the wear resistance is not high. Thus resulting in a lot of wear and tear of steel, maintenance workload. Will also reduce the power output. In order to improve the wear resistance of austenitic manganese steel under medium and low impact load conditions, a large number of domestic and foreign scholars have done a lot of experimental research, using a variety of methods to strengthen the austenite matrix, increase the anti-wear particles, improve processing Hardening rate and so on. The study includes: to reduce the amount of manganese (down to 6 ~ 9%), in order to reduce the stability of austenite and improve the work hardening rate; appropriate increase of carbon