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 ›› 2006, Vol. 27 ›› Issue (4): 61-62.

• 工艺技术 • 上一篇    

淬回火工艺对弹簧钢60Si2CrVAT 力学性能的影响

李 英,  聂爱诚, 吴小林, 赵  晗   

  1. 江阴兴澄特种钢铁有限公司,江阴214429
  • 收稿日期:2006-03-22 出版日期:2006-08-01 发布日期:2023-03-18
  • 作者简介:李 英(1970-),女,工程师,材料工程硕士,从事弹簧钢材料方面的科研工作。
  • 基金资助:
    国家863项目基金资助(编号2003AA331180)

Effect of Quenching and Tempering Process on Mechanical Properties of Spring Steel 60Si2CrVAT

Li Ying, Nie Aicheng, Wu Xiaolin, Zhao Han   

  1. Xingcheng Special Iron and Steel Co Ltd, Jiangyin 214429
  • Received:2006-03-22 Published:2006-08-01 Online:2023-03-18

摘要: 杭钢用80 t UHP DC电弧炉-钢包炉(LF)-200 mm×200 mm连铸及700×1/650×3轧机轧制,生产直径75 mm的Q390B低合金高强度圆钢。LF精炼时控制(%)0.16-0.19C,1.35-1.52Mn,0.03~0.05V,≤0.025S,≤0.025P,喂CaSi线并全程吹氩,连铸采用长水口保护浇注。检验结果表明,钢材具有良好的表面质量、低倍组织,夹杂物≤2.0级,钢的σB 380~465 MPa,σb 545~625 MPa,δ22.0%-28.5%,Ak 98-210 J。

关键词: 弹簧钢60Si2CrVAT, 淬火,回火, 力学性能

Abstract: The φ18 mm high strength spring steel 60Si2CrVAT(0.57C,1.65Si,1.04Cr,0. 13V)was produced by 100 t EBT EAF-LF(VD)- 300 mm×320 mm billet casting process at Xingcheng Special Steel. The S+ P content in finished steel was ≤200×10-6 and average oxygen content ≤12×10-6.Because the V carbon-nitride couldn't be dissolved completely below 900 ℃,the heat treatment test was carried out to obtain that the tensile strength was 1950~1970 MPa and elongation was 9%~12% by quenched at 910 ℃ for 60 min and tempered at 410 ℃ for 90 min.