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 ›› 2023, Vol. 44 ›› Issue (2): 25-28.DOI: 10.20057/j.1003-8620.2022-00016

• 工艺技术 • 上一篇    下一篇

直接切削用40MnVS钢高强韧化控轧控冷工艺开发

冀 鸰,余道军   

  1. 靖江特殊钢有限公司材料研究所,靖江 214500
  • 收稿日期:2022-05-28 出版日期:2023-04-01 发布日期:2023-03-24
  • 作者简介:冀鸰(1978-),男,博士,教授级高级工程师;E-mail:jiling@ citicsteel.com

Development of High Strengthening and Toughening TMCP of 40MnVS Steel Round Bars for Direct Cutting Appliction

Ji Ling , Yu Daojun   

  1. Institute of Material Research,Jingjiang Special Steel Co.,Ltd., Jingjiang 214500
  • Received:2022-05-28 Published:2023-04-01 Online:2023-03-24

摘要: 采用1030℃开坯、880℃连轧、轧后穿水的控轧控冷工艺试制了φ110 mm直接切削用40MnVS非调质圆钢,结果表明:轧后穿水可在控轧工艺的基础上进一步细化晶粒,明显改善带状组织,提高钢的力学性能。产品在抗拉强度达到945 MPa、屈服强度达到800 MPa 的情况下,Aku仍能达到70 J以上,可代替42CrMo等调质钢。

关键词: 直接切削, 40MnVS非调质钢, 控轧控冷, 轧后穿水

Abstract: Using Theno-Mechanicd Control Process(TMCP)of 1030 ℃ breakdownrdling 800 ℃ continous rolling and water through after rolling,φ110& mm non-quench and tempering (NQT) 42MnVS for free cutting application was trial produced. The results indicate that water fast cooling process of rolled steel can refine grain size, improve banded structure obviously and increase mechanical properties of steel. At the condition that tensile strength reaches 945 MPa and yield strength reaches 800 MPa, the impact energy Aku of steel products can still reaches more than 70 J. It can be used to replace 42CrMo NQT steel.

Key words: Direct Cutting, 40MnVS NQT Steel, TMCP, Water Through After Rolling