拉丝断面压缩率对10B30钢球化退火组织及力学性能的影响  

Effects of Wire Drawing Reduction of Cross-Sectional Area on Spheroidizing Annealing Structure and Mechanical Properties of 10B30 Steel

作　　者：郑晓伟 王海华 张剑锋 林再勇 孔祥伟 Zheng Xiaowei;Wang Haihua;Zhang Jianfeng;Lin Zaiyong;Kong Xiangwei(Wire Institute,Jiangyin Xingcheng Special Steel Co.,Ltd.,Jiangyin 214429)

机构地区：[1]江阴兴澄特种钢铁有限公司线材研究所,江阴214429

出　　处：《特殊钢》2023年第1期93-96,共4页Special Steel

摘　　要：研究了拉丝断面压缩率(5%~35%)对Φ9.67~11.69 mm 10B30钢丝(/%:0.28~0.34C,0.0005~0.0030B)球化退火组织及力学性能的影响。结果表明:随着球化退火前拉丝断面压缩率的增加,球化退火组织级别提高,抗拉强度降低,断面收缩率提高,这是因为拉丝促进了球化退火过程中的自发球化和碳化物的ostwald熟化;当拉丝断面压缩率达到25%以上,球化组织和相应的抗拉强度和断面收缩率趋于稳定;实际生产中,退火前拉丝断面压缩率不应低于25%。Effects of wire drawing reduction rade of cross-sectional area on spheroidizing annealing structure and mechanical property ofΦ9.67-11.69 mm 10 B30 steel wire rod(/%:0.28-0.34 C,0.0005-0.0030 B)have been studied.The results show that with increasing of drawing reduction of cross-sectional area,the rate of spheroidizing annealing structure increases,the tensile strength decreases and the reduction of area increases,this is because the wire drawing promotes spontaneous spheroidizing and ostwald ripening of carbide during spheroidizing annealing.Spheroidizing annealing structure and corresponding tensile strength and reduction rate of cross-sectional area become stable when drawing reduction rate of cross-sectional area is over 25%.In actual production,drawing reduction of cross-sectional area before annealing shouldn’t be less than 25%.

关 键 词：10B30钢 拉丝断面压缩率 球化退火 球化组织 力学性能 

分 类 号：TG142.1[一般工业技术—材料科学与工程]