首页>
外国专利>
A PROCESS FOR PRODUCING A COLD-ROLLED FERRITIC/MARTENSITIC DUAL-PHASE STEELSTRIP AND COLD-ROLLED FERRITIC/MARTENSITIC DUAL-PHASE STEEL STRIPTHUS OBTAINED
A PROCESS FOR PRODUCING A COLD-ROLLED FERRITIC/MARTENSITIC DUAL-PHASE STEELSTRIP AND COLD-ROLLED FERRITIC/MARTENSITIC DUAL-PHASE STEEL STRIPTHUS OBTAINED
展开▼
机译：所获得的冷轧铁素体/马氏体双相钢和冷轧铁素体/马氏体双相钢的生产方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
The invention relates to a method of producing a cold-rolled band of dual-phase steel with a ferritic/marensitic structure. The inventive method consists in hot rolling a slab having a chemical composition which comprises, by weight, 0.O1 % = C =1 %, COS %Mn%, 0.01 % = Cr1 %, O.O1 % = Si = 0.5 %, 0.001 % = P = 0.2%. 0.O1 % = Al= 0.1 %, N = 0.01 %. the remainder being iron and impurities resulting from the preparation thereof. The method also comprises the following subsequent steps consisting in: hot winding the band obtained at a temperature of between 550 and 850 0C; cold rolling the band with a reduction ratio of between 60 and 90 %; annealing the band continuously in the intercritical region; cooling said band to ambient temperature, in one or more steps, the rate of cooling between 600 0C and ambient temperature being between 100 0C/s and 1500 0C/s; and, optionally, tempering same at a temperature of less than 3OO 0C. The aforementioned annealing and cooling operations are performed such that the end band comprises between 1 and 15 % martensite. The invention also relates to the steel band thus formed.
展开▼
机译：本发明涉及一种具有铁素体/马氏体组织的双相钢的冷轧带材的制造方法。本发明的方法包括对具有以下化学组成的板坯进行热轧，该板坯的化学组成按重量计包括0.1％＝ C ＝ 1％，COS％Mn％，0.01％＝ Cr1％，0.01％＝ Si ＝ 0.5％， 0.001％= P = 0.2％。 0.01％= Al = 0.1％，N = 0.01％。其余的是铁及其制备过程中产生的杂质。该方法还包括以下后续步骤，包括：将在550和850 0C之间的温度下获得的带热缠绕;冷轧带，压下率在60％到90％之间;在临界区对带进行连续退火;以一个或多个步骤将所述带冷却到环境温度，在600 0C和环境温度之间的冷却速率在100 0C / s和1500 0C / s之间;任选地，在低于3OO 0C的温度下回火。进行上述退火和冷却操作，以使端带包含1至15％的马氏体。本发明还涉及如此形成的钢带。
展开▼
