疏浚船用高强高韧铸造锁圈的热处理工艺研究  

Research on Heat Treatment Technology of High Strength and High Toughness Casting Lock Ring for Dredging Ship

作　　者：李祖磊 薛冰[1] 李兆森 于从潇 申发磊 管浩 殷凤仕[1] LI Zulei;XUE Bing;LI Zhaosen;YU Congxiao;SHEN Falei;GUAN Hao;YIN Fengshi(School of Mechanical Engineering,Shandong University of Technology,Zibo 255000,China)

机构地区：[1]山东理工大学机械工程学院,山东淄博255000

出　　处：《热加工工艺》2024年第13期105-107,共3页Hot Working Technology

摘　　要：锁圈用于疏浚船管道对接,是管道接口处的关键部件,其承受较大的载荷,对材料的强韧性要求高。对一种疏浚船用高强高韧铸造锁圈用钢进行了热处理工艺研究。结果表明:在淬火温度890℃时,随回火温度的升高,试验钢的强度降低,断后伸长率升高。经890℃水淬、620℃回火后的组织为回火马氏体,硬度和冲击功分别为34 HRC和29 J,材料强韧性配合较好。The lock ring is the key component at the pipeline interface of dredging ship,which bears a large load and requires high strength and toughness of the material.The heat treatment technology of a kind of steel for high strength and high toughness casting lock ring for dredgedmarine was studied.The results show thatwhen the quenching temperature is 890℃,the strength of the test steel decreases and the elongation after break increases with the increase of tempering temperature.After water quenching at 890℃and tempering at 620℃,the microstructure is tempered martensite,and the hardness and impact work are 34 HRC and 29 J,respectively,the strength and toughness of the material are well matched.

关 键 词：疏浚船 锁圈 热处理 高强高韧 

分 类 号：TG161[金属学及工艺—热处理]