论文部分内容阅读
四新是指新材料、新设备、新工艺及新技术,所谓新是相对而言。近年来,工具热处理行业积极开展了这些方面的研究工作,在生产上加以应用或进行中间生产试验。现就几个主要方面,作一简要报导,借以迎接国庆卅五周年的到来。采用新材料方面,主要是指大量使用通用高速钢新钢种。过去我国长期使用钨系(18-4-1型)高速钢,六十年代以来,我国开始使用性能较优的钨钼系(6-5-4-2型)高速钢。最近美国钨钼系高速钢发展很快,日
Four new refers to new materials, new equipment, new technology and new technology, the so-called new is relative. In recent years, the tool heat treatment industry actively carried out research work in these areas, to be applied in production or intermediate production test. Let us now make a brief report on several major aspects in order to welcome the fifth anniversary of the National Day holiday. The use of new materials, mainly refers to the extensive use of new high-speed steel common steel. In the past, China used tungsten series (18-4-1 type) high speed steel for a long time. Since the 1960s, our country started to use the high performance tungsten steel (6-5-4-2 type) high speed steel. Recently the United States tungsten-molybdenum high-speed steel developed rapidly, Japan