ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2017, Vol. 38 ›› Issue (2): 56-59.

• 组织和性能 • 上一篇    下一篇

NM450D 耐磨钢-Q235B 碳钢复合板的轧制和热处理工艺对组织、性能的影响

邱俊1,程晓茹1,兰昆1,雷冬1,王煜1,黄大军2   

  1. 1. 武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,武汉 430081 ;
    2. 武汉钢铁股份有限公司,武汉 430083;
  • 收稿日期:2016-10-26 出版日期:2017-04-01 发布日期:2022-07-23
  • 作者简介:邱俊(1992-),男,硕士研究生(武汉科技大学),2014年长江大学(本科)毕业,复合轧制复合板组织及性能研究。

Effect of Rolling and Heat-Treatment on Structure and Properties of Wear-Resistant Steel NM450D-Carbon Steel Q235B Clad Plate

Qiu Jun1 , Cheng Xiaoru1 , Lan Kun1 , Lei Dong1 , Wang Yu1 , Huang Dajun2   

  1. 1. Key Laboratory for Ferrous Metallurgy and Resource Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081 ;
    2. Wuhan Iron and Steel Co Ltd, Wuhan 430083;
  • Received:2016-10-26 Published:2017-04-01 Online:2022-07-23

摘要: 10 mm NM450D低合金耐磨钢板(/%:0.22C,0.70Cr,1.50Mn,0.30Si,0.012Ti,0.030Nb)和10 mm Q235B碳钢板(/%:0.19C,0.25Mn,0.04Si)经表面处理和四角焊接成20 mm复合板,在180 mm二辊实验轧机上经1150℃,60%压下率和930℃,30%压下率两次轧制成5.6 mm复合板,再经800~1000℃淬火,250℃回火处理。结果表明,经900℃淬火+250℃回火的低合金耐磨钢-碳钢复合板的5.6 mm复合界面接触良好,Q235B钢组织为板条马氏体+铁素体和少部贝氏体和珠光体,NM450D钢组织为回火马氏体,其HV值为500,复合钢板抗剪强度为367 MPa,均达到标准要求。

关键词: NM450D耐磨钢-Q235B碳钢复合板, 复合界面, 控制轧制, 热处理, 组织, 剪切强度

Abstract: The 20 mm clad plate of surface-treated 10 mm plate of low alloy wear-resistant NM450D steel (/% : 0.22C, 0.70Cr, 1.50Mn, 0.30Si, 0.012Ti, 0.030Nb) and 10 mm plate of carbon steel Q235B (/% : 0.19C, 0.25Mn, 0.04Si) is welded at four-comer of plate and double-rolled by a lab 180 mm two-high mill with reduction 60% at 1150℃ and with reduction 30% at 930°C to 5.6 mm clad plate, then quenched at 800~1000°C and tempered at 250 °C. Results show that the clad interface of 5.6 mm clad plate of low alloy wear-resistant steel-carbon steel quenched at 900°C + tempered at 250°C has nice contact, the structure of steel Q235 is lath martensite + ferrite and minor bainite and pearlite, the structure of steel NM450D is tempered martensite with HV hardness value 500, the shearing-strength of clad plate is 367 MPa, all meet the requirement of standard.

Key words: Wear-Resistant Steel NM450D-Carbon Steel Q235B Clad Plate, Clad Interface, Control-Rolling, Heat Treatment, Structure, Shearing Strength