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

doi:10.13251/j.issn.0254-6051.2021.05.048

Abstract

Abstract: 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.

Key words: water-based quenching liquid, oil content, cooling performance, hardening capacity, distortion amount

CLC Number:

TG156

Liu Chengmiao, Dong Lihua, Li Qinghong, Zhu Hongling, Ren Lin. Influence of oil pollution on cooling characteristics of PAG water-based quenchant[J]. Heat Treatment of Metals, 2021, 46(5): 272-275.

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