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大规格贝氏体型非调质钢 XGMnVS 的开发实践
Development Practice of Large Scale Bainite Non-quenched and Tempered Steel XGMnVS
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- DOI:
- 作者:
- 鲜奋强 ,王芝林,钱才让,王磊英,杨 国 ,马 娟 ,柳沛强
XIAN Fenqiang , WANG Zhilin , QIAN Cairang , WANG Leiying , YANG Guo ,MA Juan, LIU Peiqiang
- 作者单位:
- 西宁特殊钢股份有限公司; 青海西钢特殊钢科技开发有限公司
Xining Special Steel Co., Ltd., ; Qinghai Xigang Special Steel Technology Development Co., Ltd.,
- 关键词:
- XGMnVS 钢;大规格;贝氏体;机械性能
XGMnVS steel; large scale; bainite; mechanical properties
- 摘要:
- 设计开发贝氏体型非调质钢 XGMnVS( 质量分数, %: 0.12~0.14 C , 0.80~0.90 Si , 2.65~2.75 Mn , 0.010~0.020 S , 0.08~0.15 V , 0.64~0.72 Cr , 0.19~0.25 Ni , 0.015~0.025 Ti , 0.010~0.030 Nb) ,尺寸为 φ175 mm 圆钢。该钢组织为板条状下贝氏体 + 粒状贝氏体的混合组织,其综合机械性能良好,抗拉强度 1 100~1 200 MPa ,屈服强度 780~ 880 MPa ,断后伸长率 ≥15% ,断面收缩率 ≥35% ,冲击功 ≥35 J ,布氏硬度 300~330 HB 。 该大规格贝氏体型非调质钢 XGMnVS 可广泛应用于塑机液压杆、汽车前轴和转向节的制造。φ175 mm steel XGMnVS (mass fraction,% : 0.12~0.14 C , 0.80~0.90 Si , 2.65~2.75 Mn , 0.010~0.020 S 0.08~0.15 V , 0.64~0.72 Cr , 0.19~0.25 Ni , 0.015~0.025 Ti , 0.010~0.030 Nb) was designed. The structure of the steel is a mixture of slab bainite and granular bainite with good mechanical properties, tensile strength of 1 100~1 200 MPa, yield strength of 780~880 MPa, elongation ≥15% , section shrinkage ≥35% , impact work ≥35 J, and Brinell hardness of 300~330 HB. Large scale bainitic non-quenched and tempered steel XGMnVS can be widely used in the manufacture of hydraulic poles of plastic machines and front axles of automobiles.