调质热处理对活塞杆摩擦焊接头组织性能的影响
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摘要
通过拉伸试验、硬度试验、弯曲试验,分析了调质热处理对钢活塞杆连续驱动摩擦焊接头组织和抗拉强度的影响,结合显微组织观察、拉伸断口分析解释了接头不同调质处理抗拉强度差异的原因。结果表明,淬火温度850℃、淬火保温时间140 min、回火温度570℃、回火保温时间120 min的调质处理,能够改善接头的显微组织,提高其抗拉强度,达到815 MPa。接头抗拉强度差异的原因主要是淬火温度不同导致马氏体含量不同。
Effect of quenching-tempering heat treatment on the tensile strength of steel piston rod continuous driven friction welding joint was analyzed by tensile property test,hardness test and bending test. The reasons for the difference in tensile strength of the joint with different quenching-tempering heat treatments were explained by microstructure observation and tensile fracture analysis. Under the conditions including quenching at 850 ℃ with holding time of 140 min and tempering at 570 ℃ with holding time of 120 min,the microstructure of the joint can be improved while the tensile strength can be effectively increased to 815 MPa. The main reason for the difference in tensile strength of the joint is that the martensite content varies with the quenching temperature.
Effect of quenching-tempering heat treatment on the tensile strength of steel piston rod continuous driven friction welding joint was analyzed by tensile property test,hardness test and bending test. The reasons for the difference in tensile strength of the joint with different quenching-tempering heat treatments were explained by microstructure observation and tensile fracture analysis. Under the conditions including quenching at 850 ℃ with holding time of 140 min and tempering at 570 ℃ with holding time of 120 min,the microstructure of the joint can be improved while the tensile strength can be effectively increased to 815 MPa. The main reason for the difference in tensile strength of the joint is that the martensite content varies with the quenching temperature.
引文
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[2]朱海,郑海洋,郭彦玲,等.热处理工艺对摩擦焊接钻杆力学性能的影响[J].焊接学报,2008,29(12):93-96.Zhu Hai,Zheng Haiyang,Guo Yanling,et al. Effects of heat treatment technology on mechanical properties of friction welding drill rod[J].Transactions of the China Welding Institution,2008,29(12):93-96.
[3]齐秀滨,刘娟,周军,等.摩擦焊在我国石油钻杆制造中的应用[J].电焊机,2010,40(6):10-13.Qi Xiubin,Liu Juan,Zhou Jun,et al. Applications of friction welding for oil drill pipe in China and their measures[J]. Electric Welding Machine,2010,40(6):10-13.
[4]张政,李瑞武,马柯鑫,等.中温形变对45钢组织及力学性能的影响[J].金属热处理,2019,44(4):166-170.Zhang Zheng, Li Ruiwu, Ma Kexin, et al. Effect of moderate temperature deformation on microstructure and mechanical properties of45 steel[J]. Heat Treatment of Metals,2019,44(4):166-170.
[5]杨明鄂.活塞杆连续驱动摩擦焊接工艺参数的设计与优化[D].湘潭:湖南科技大学,2012.
[6]陈东高,刘金合,陈东亮,等. 7A52厚板铝合金单双面搅拌摩擦焊接头性能对比分析[J].兵器材料科学与工程,2016,39(5):29-31.Chen Donggao,Liu Jinhe. Chen Dongliang,et al. Properties of welded joints of 7A52 aluminum alloy thick-plate by single-side and double-side friction stir welding[J]. Ordnance Material Science and Engineering,2016,39(5):29-31.
[7]邵春娟,米国发,许磊,等.冷速对316H大锻件固溶处理后析出相及晶间腐蚀的影响[J].金属热处理,2018,43(10):60-66.Shao Chunjuan,Mi Guofa,Xu Lei,et al. Effect of cooling rate on precipitation phase and intergranular corrosion of 316H large forging after solution treatment[J]. Heat Treatment of Metals,2018,43(10):60-66.
[8]刘龙飞,杨明鄂.活塞杆连续驱动摩擦焊接头性能分析与对策[J].热加工工艺,2013,42(19):36-39.Liu Longfei,Yang Minge. Analysis and recommendations for continuous driven friction welded joint of piston rod[J]. Hot Working Technology,2013,42(19):36-39.
[9]李同洪.高强钢双光束热丝多层焊工艺及接头组织性能研究[D].哈尔滨:哈尔滨工业大学,2009.
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