由于现代工业对机床质量的要求日益严格,近年来各厂都先后建立了理化试验室。金相组织的考查,是理化室主要的工作之一,但是在这一方面,工作效率大都不高。国家大规模经济建设,使各工厂的任务是大大加重了。在这种新的形势的要求之下。理化经验工作就更加繁杂了。 为了提高金相? Due to the increasingly stringent requirements on the quality of machine tools in modern industry, all the factories have successively established physical and chemical laboratories in recent years. Metallographic examination, is one of the major work of the Physical and Chemical Department, but in this regard, most of the work efficiency is not high. The large-scale national economic construction has greatly aggravated the tasks of various factories. At the request of this new situation. Physical and chemical experience more complicated. In order to improve the metallographic?