油污掺杂对PAG水基淬火液冷却特性的影响  

Influence of oil pollution on cooling characteristics of PAG water-based quenchant

作　　者：刘城淼 董丽华 李庆宏 朱红玲 任林 Liu Chengmiao;Dong Lihua;Li Qinghong;Zhu Hongling;Ren Lin(College of Ocean Science and Engineering,Shanghai Maritime University,Shanghai 200120,China)

机构地区：[1]上海海事大学海洋科学与工程学院,上海200120

出　　处：《金属热处理》2021年第5期272-275,共4页Heat Treatment of Metals

基　　金：上海市科委科学技术发展基金(01JC14018)。

摘　　要：为了探究油污对水基型淬火液冷却性能的影响,测试了不同油浓度下淬火液的冷却速率曲线、硬化能力等,通过分析淬火的具体过程和特性值函数,探讨了油污的掺杂影响淬火液冷却性能的机制。结果表明:当淬火液中油污含量大于0.3%时,淬火液的冷却性能明显变差,具体表现为沸腾阶段延后且高温阶段冷却速率明显下降,淬火液的硬化能力也随之降低;但油污的含量对工件的畸变影响较小。In order to explore the influence of oil pollution on cooling performance of water-based quenchant,the cooling rate curve and hardening capacity of quenchant with different oil contents were tested.The mechanism of oil pollution influencing the quenchant cooling performance was discussed by analyzing the specific quenching process and characteristic value function.The results show that when the oil content in the quenchant exceeds 0.3%,the cooling performance of the quenchant is significantly worse,specifically,the boiling stage is delayed,the cooling rate decreases obviously at high temperature stage and the hardening capacity of the quenchant is also reduced.But the content of oil has little effect on the quenching distortion of workpiece.

关 键 词：水基型淬火液 油含量 冷却性能 硬化能力 畸变量 

分 类 号：TG156[金属学及工艺—热处理]