摘要
文章介绍了弹簧钢板27SiMn新产品生产工艺流程及相关的工艺参数。通过合理的轧后冷却参数设定,得到了产品需要的组织,该组织保证了产品的力学性能。用户使用情况表明,充分利用包钢现有的装备,采用合理的工艺参数,在原料及铁水都满足要求的情况下,生产出的27SiMn弹簧钢板性能良好,其抗拉强度不小于800 MPa,延伸率不小于19%。此外,加热炉的气氛对含硅中碳钢的表面脱碳层有重要影响,还原性气氛和加热炉内微正压操作使27SiMn弹簧钢板表面脱碳层只有国标GB/T 1222—2016要求的24%。
In this paper,the production technology process and relative process parameters of new product,27SiMn spring steel plate are introduced.The microstructure needed by product is obtained through reasonably setting cooling parameters after rolling,with which the mechanical properties of product are ensured.The using status of users shows that the performances of 27SiMn spring steel plate are good by making full use of existing equipment of Baotou Steel,adopting reasonable process parameters under the condition that both of raw materials and liquid iron meet the requirements.Its tensile strength is not less than 800 MPa and elongation is not less than 19%.Moreover,the effects of atmosphere in heating furnace on decarburized layer on the surface of medium carbon steel with silicon are important,decarburized layer on the surface of 27SiMn spring steel plate is just 24%of the requirements in the national standard GB/T 1222—2016 by reducing atmosphere and micro-positive pressure operations in heating furnace.
作者
李峰
王婷
郎荣彪
周学刚
Li Feng;Wang Ting;Lang Rong-biao;Zhou Xue-gang(Technical Center of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China;Plate Plant of Inner Mongolia Baotou Steel Rare Earth Steel Plate Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China)
出处
《包钢科技》
2024年第3期57-60,共4页
Science & Technology of Baotou Steel
