攀钢转炉-大方坯连铸工艺生产齿轮钢20CrMoH的实践

特殊钢 ›› 2005, Vol. 26 ›› Issue (4): 36-37.

攀钢转炉-大方坯连铸工艺生产齿轮钢20CrMoH的实践

蒲学坤

攀枝花钢铁研究院，攀枝花617000

收稿日期:2004-12-02 出版日期:2005-08-01 发布日期:2023-05-17
作者简介:蒲学坤（1975）,男，高级工程师，1994年东北大学毕业。从事型棒材新产品开发和冶炼工艺研究。

Practice on Production of Gear Steel 20CrMoH by Converter- Bloom Concasting Process at Panzhihua Iron and Steel

Pu Xuekun

Panzhihua Iron and Steel Research Institute, Panzhihua 617000

Received:2004-12-02 Published:2005-08-01 Online:2023-05-17

摘要/Abstract

摘要： 攀钢采用120t顶底复吹转炉→LF+RH精炼→大方坯连铸(280mm×380mm)→热轧工艺生产规格为Φ25～60mm的20CrMoH齿轮钢,检验结果表明,成品检验结果为成分(%):C0.19～0.22,Mn0.54～0.58,Cr0.97～1.03,Mo0.18～0.19,P0.019～0.028,S0.006～0.012,ΔHRC J9≤6、J15≤9,[O]≤20×10^-6,A,B类夹杂≤1.5级,C,D类夹杂≤1.0级,机械性能和低倍组织均满足标准要求。

Abstract: The Φ25 ~ 60 mm round bars of gear steel 20CrMoH have been produced at Panzhihua Iron and Steel by 120 t top and bottom combined blown converter - LF + RH refining - 280 nun x 380 mm bloom concasting - hot rolling process. The examination results showed that the products analysis was 0.19- 0.22C, 0.54 ~ 0.58Mn, 0.97 - 1.03Cr, 0.18〜0.19Mo, 0.019~0.028P, 0.006~0.012S; the hardenability band AHRC J9 was ≤6, AHRC J15≤9, [O]≤20 x 10^-6，inclusion rating number- type A, B W1.5 and type C, D w 1; and the mechanical properties and macrostructure all met requirement of standard.

蒲学坤. 攀钢转炉-大方坯连铸工艺生产齿轮钢20CrMoH的实践[J]. 特殊钢, 2005, 26(4): 36-37.

Pu Xuekun. Practice on Production of Gear Steel 20CrMoH by Converter- Bloom Concasting Process at Panzhihua Iron and Steel[J]. Special Steel, 2005, 26(4): 36-37.