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一、高速钢热处理工艺现状自1900年发明了高速钢以后,当时即确立了比较合理的热处理工艺,至今亦无甚改变。目前学者们所普遍推荐的和工厂中广泛采用的热处理工艺,不外乎以下几种工序的迭合:退火——普通退火;等温退火淬火一段式——800～850℃预热二段式——500～550℃和800～850℃淬火普通淬火(油冷)分级淬火一般分级冷在M_H点以下控制冷速的慢冷 560℃1小时三次回火等温淬火贝茵体处理法 560℃1小时四次回火表面处理——氰化;硫化;磷化或电火花强化;热油处理、热水处理;蒸汽处理
First, the status of high-speed steel heat treatment process Since the invention of high-speed steel in 1900, then established a more reasonable heat treatment process, so far no change. At present, scholars generally recommend and widely used in the factory heat treatment process, nothing more than the following combinations of processes: Annealing - Ordinary annealing; Isothermal annealing Quenching one --800 ~ 850 ℃ Preheating two - -500 ~ 550 ℃ and 800 ~ 850 ℃ Quenching Ordinary Quenching (Oil Cooled) Classification Quenching General Grading Cold Below M_H Controlling Slow Cooling Slow 560 ℃ 1hours Tempering Isothermal Quenching Bainite Processing 560 ℃ 1h Four tempering surface treatment - Cyanide; Vulcanization; Phosphating or EDM; Hot oil treatment, hot water treatment; Steam treatment