无产阶级文化大革命大大促进了我国社会主义建设的蓬勃发展,一些高强度、高硬度和难加工合金钢材料大量涌现,这就要求金属加工工业尽快拥有更多、更快、更强有力的加工工艺手段。我们在省市技协大力协助下,和沈阳机电学院等单位组成了“三结合”小组组,经过几百次试验,研制了适 The Great Proletarian Cultural Revolution has greatly promoted the vigorous development of our socialist construction. Some high-strength, high-hardness and difficult-to-process alloy steel materials have sprung up. This requires the metal processing industry to have more, faster and more powerful processing technologies as soon as possible means. With the help of provincial and municipal technical associations, we formed a group of “triple combination” with units such as Shenyang Institute of Mechanical and Electrical Engineering and developed hundreds of tests