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
李祖磊 1薛冰 1李兆森 1于从潇 1申发磊 1管浩 1殷凤仕1
作者信息
- 1. 山东理工大学 机械工程学院,山东 淄博 255000
- 折叠
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.
Abstract
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 dredged marine was studied.The results show that when 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Key words
dredging ship/lock ring/heat treatment/high strength and high toughness引用本文复制引用
出版年
2024
NETL
NSTL
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