Si含量对10B21钢热轧盘条组织和性能的影响  

Effect of Si Content on Structure and Properties of 10B21 Steel Hot-Rolled Coil

作　　者：李世琳 阮士朋 Li Shilin;Ruan Shipeng(Technology Center,Xingtai Iron and Steel Corp Ltd,Xingtai 054027;Hebei Province Engineering and Technology Research Center for Wire Rod,Xingtai 054027)

机构地区：[1]邢台钢铁有限责任公司技术中心,邢台054027 [2]河北省线材工程技术研究中心,邢台054027

出　　处：《特殊钢》2020年第2期15-17,共3页Special Steel

摘　　要：分析和研究了0.03%~0.21%Si含量对含硼冷镦钢10B21 (/%:0.20C,0.03~0.21Si,0.82~0.83Mn,0.009~0.013S,0.015~0.016P,0.001 9~0.002 0B)Φ34 mm热轧盘条组织和性能的影响。盘条热轧的终轧温度为900℃,缓冷。结果表明,Si含量由0.03%增加到0.21%,10B21钢盘条抗拉强度由480 MPa增加到489 MPa,即增加了9 MPa;HRB硬度值增加5.3,钢的组织中铁素体团尺寸由52μm降低至42μm,非金属夹杂物尺寸及数量无明显变化,淬透性能提高。The effect of 0.03%~0.21% Si on structure and properties of 10B21 cold heading steel of containig boron(/%:0.20 C,0.03~0.21 Si,0.82~0.83 Mn,0.009~0.013 S,0.015~0.016 P,0.001 9~0.002 0 B) Φ34 mm hotrolled coil has been analyzed and studied.The end-rolling temperature of hot-rolling coil is 900 ℃,slow-cooling.Results show that with increasing Si content in 10 B21 steel from 0.03% to 0.21%,the tensile strength of coil increasing from 480 MPa to 489 MPa,i.e.that increases by 9 MPa;the HRB hardness value increases by 5.3;the size of ferrite groups in structure of steel reduces from 52 μm to 42 μm;the size and quantity of non-metallic inclusions has no obvious change;and the hardenabilitv of steel improves.

关 键 词：SI含量 10B21钢 热轧盘条 组织 力学性能 

分 类 号：TG142.1[一般工业技术—材料科学与工程]