型钢生产线用大型轧辊铸造生产技术研究  

Research on Casting Technology of Large Roll for Shape Steel Production Line

作　　者：杨丽[1] 汪红有 董欣欣[1] 宋进英 YANG Li1, WANG Hongyou2, DONG Xinxin1, SONG Jinying3(1. Department of Metallurgical, Tangshan Vocational College of Science and Technology, Tangshan 063001, China; 2. Technology Center of Tangshan Guofeng Iron ＆ Steel Co. Ltd., Tangshan 063300, China; 3. College of Metallurgy and Energy, North China University of Science and Technology, Hebei Key Laboratory of Modem Metallurgy Technology, Tangshan 063210, Chin)

机构地区：[1]唐山科技职业技术学院冶金系,河北唐山063001 [2]唐山国丰钢铁有限公司技术中心,河北唐山063300 [3]华北理工大学冶金与能源学院河北省现代冶金技术重点实验室,河北唐山063210

出　　处：《铸造技术》2018年第4期784-786,共3页Foundry Technology

基　　金：国家自然科学基金(51574107);河北省自然科学基金(E2016209048);唐山市科技创新团队培养计划项目(1513020X)

摘　　要：分析了型钢生产线大型轧辊开发中的化学成分及其强化机制、冶炼铸造工艺、热处理工艺等。结果表明,大型轧辊浇注时采用电加热冒口新工艺,轧辊的平均成品率提高12%;热处理后轧辊抗拉强度为690~730 MPa,HSD47~50、硬度分布均匀,耐磨性好,残余应力低,未出现裂纹、缩孔、疏松、夹渣等铸造缺陷,满足了大型轧辊的使用要求,降低了生产成本,提高了经济效益。The chemical composition, strengthening mechanism, melting and casting process, heat treatment process of large roll was discussed. The results show that the new-technology of electric heating riser is adopted in large roll casting,the average yield of the roll is increased by 12%. Roll tensile strength after heat treatment is 690 - 730 MPa, HSD47 - 50,uniform hardness distribution, good abrasion resistance, low residual stress, there is not crack, shrinkage cavity, porosity,slag casting defects, and satisfying the requirements of the using of large roll, reduce the production cost, improve the economic benefit.

关 键 词：轧辊 铸造工艺 铸造缺陷 热处理 

分 类 号：TG269[金属学及工艺—铸造]