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根据冶金学的观点,钢的强化因素有:(1)晶粒细化,(2)固溶强化;(3)析出强化;(4)相变强化;(5)加工强化;(6)珠光体强化等。对控制轧制(以下简称 CR)的钢而言,上述强化因素都能起作用。其中以晶粒细化最有效果。尤其是晶粒细化,以同时获得强度和韧性的唯一因素在 CR 钢生产中占有重要地位。因此近十年来迅速发展的 CR 技术在国际上已被确认为一项重大的技术突破。CR 技术不仅可以大幅度提高应用范围极广的高强低合金钢的机械性能,并可取消常规的轧后热处理,节能和降低成本。该技术目前已渗透到轴承钢、不锈钢等特殊钢领域。CR 技术无论是在国内国外都是扩大轧材的应用范围、开拓新材料领域,提高国民经济效益的重要途径,了解和掌握国外近期 CR 技术状况及其发展趋势,是将我国的 CR 技术提高到一个新水平的前提。本文就国外近期 CR 技术状况及其发展趋势作一简要介绍。
According to the metallurgical point of view, steel strengthening factors are: (1) grain refinement, (2) solid solution strengthening; (3) precipitation strengthening; (4) phase transformation strengthening; (5) processing strengthening; Body strengthening and so on. For the control of rolling (hereinafter referred to as CR) steel, the above-mentioned strengthening factor can work. One of the most effective grain refinement. In particular, the only factor in grain refinement to achieve both strength and toughness plays an important role in CR steel production. Therefore, the rapid development of CR technology over the past decade has been recognized internationally as a major technological breakthrough. CR technology can not only greatly improve the mechanical properties of a wide range of high strength low alloy steel, and can cancel the conventional heat treatment after rolling, energy saving and lower costs. The technology has now penetrated to the bearing steel, stainless steel and other special steel areas. CR technology both at home and abroad are expanding the scope of application of rolled materials, open up new materials areas, improve the national economy an important way to understand and grasp the status of CR technology and its recent development trend is to CR technology in China to A new level of premise. This article on the recent CR technology status and its development trend for a brief introduction.