东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2011, Vol. 32 ›› Issue (1): 52-55.DOI: -

• 论著 • 上一篇    下一篇

工程机械用960 MPa级调质钢板的淬火工艺研究

康健;卢峰;王昭东;王国栋;   

  1. 东北大学轧制技术及连轧自动化国家重点实验室;唐钢宽厚板项目经理部;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    中央高校基本科研业务费专项资金资助项目(N090607001);;

Study on quenching process of 960 MPa quenched and tempered steel plates for construction machinery

Kang, Jian (1); Lu, Feng (2); Wang, Zhao-Dong (1); Wang, Guo-Dong (1)   

  1. (1) The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China; (2) Wide Heavy Plate Project Manager Department of Tangshan Iron and Steel Corporation, Tangshan 063000, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Kang, J.
  • About author:-
  • Supported by:
    -

RichHTML

0

PDF (PC)

672

摘要： 以屈服强度960 MPa级高强调质钢板开发为目标,研究了淬火热处理制度对试验钢显微结构及力学性能的影响.结果表明:再加热淬火温度及保温时间决定了合金元素的溶解分布状态以及原奥氏体晶粒尺寸,最终影响了试验钢的综合力学性能,当淬火温度为900℃,保温15~25 min左右时试验钢具有优良的性能,即屈服强度Rp0.2=1 110 MPa,抗拉强度Rm=1 140 MPa,伸长率A=14%,-40℃冲击功AkV=130 J,各项指标均满足国标GB/T16270—2009的要求.

关键词: 高强钢, 淬火工艺, 调质处理, 显微组织, 力学性能

Abstract: To develop the Q960 high-strength quenched and tempered steel plates, the effects of quenching treating regime on the microstructure and mechanical properties of plate specimens were investigated. The results showed that the dissolution and distribution of alloying elements and the original austenite grain size are determined by quenching temperature and holding time and, finally, the overall mechanical properties are obviously affected by the quenching process parameters, and the excellent overall properties of specimens can be obtained when the quenching temperature is 900°C with holding time 15~25 min, i.e., the yield strength is 1110 MPa, tensile strength 1140 MPa and percentage elongation 14% with the Charpy impact energy 130 J at -40°C. All these indexes come up to the national standard GB/T16270-2009.

中图分类号: