Contact Zone Changes in Cutting Alloys in the Presence of Oxygen-Containing Lubricants and Coolants

IF 0.5 4区工程技术 Q4 ENGINEERING, MECHANICAL Journal of Friction and Wear Pub Date : 2024-01-30 DOI:10.3103/s1068366623050069

A. G. Naumov, S. A. Syrbu, N. A. Taratanov, A. S. Mitrofanov

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Abstract—

Microcapsules consisting of only a gelatin shell, a gelatin shell with magnetite, and a gelatin shell filled with ozonated water (ozonated water in the microcapsule core was adsorbed by activated carbon), a gelatin shell treated with ozone, a gelatin shell with ozone-treated magnetite, and a gelatin shell containing magnetite and ozonated water were obtained by simple coacervation method. The effectiveness of using aqueous emulsions of the shells as production lubricants and coolants during cutting in turning operations on a 16K20 screw-cutting lathe using side cutters made of high-speed R6M5 steel was investigated. The set of processed materials included 12Kh18N10Т stainless steel, 40Kh chromium steel, and VT5-1 and VT-6 titanium alloys. The introduction of ozone into the composition of microcapsules is shown to increase the period of normal wear of the cutting tool. In addition, the duration of the initial wear-out period increases. It was revealed that the wear resistance of cutting tools increased most strongly if microcapsules with gelatin shells filled with magnetite and ozonated water are used. The increase in the wear resistance of a cutting tool can be explained by the formation of lubricant films at the interface between the tool and the material being processed; the films may include metal polymers and complex compounds of atomic iron, covering surface irregularities that are sterically inaccessible to metal polymers. Based on this hypothesis, an approach has been proposed, which enables predicting the potential effectiveness of production lubricants and coolants using quantum chemistry methods.

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含氧润滑剂和冷却剂作用下切削合金接触区的变化

摘要--通过简单的共凝方法获得了由仅有明胶壳、含有磁铁矿的明胶壳和充满臭氧水的明胶壳（微胶囊芯中的臭氧水被活性炭吸附）、经臭氧处理的明胶壳、含有经臭氧处理的磁铁矿的明胶壳以及含有磁铁矿和臭氧水的明胶壳组成的微胶囊。在使用高速 R6M5 钢制成的侧刀的 16K20 螺旋切削车床上进行车削操作时，研究了使用这些外壳的水乳剂作为生产润滑剂和冷却剂的效果。加工材料包括 12Kh18N10Т 不锈钢、40Kh 铬钢以及 VT5-1 和 VT-6 钛合金。结果表明，在微胶囊成分中引入臭氧可延长切削工具的正常磨损期。此外，初始磨损期的持续时间也会延长。研究表明，如果使用明胶外壳填充磁铁矿和臭氧水的微胶囊，切削工具的耐磨性会得到最大程度的提高。切削工具耐磨性增加的原因是在工具和被加工材料之间的界面上形成了润滑膜；润滑膜可能包括金属聚合物和原子铁的复杂化合物，覆盖了金属聚合物无法立体进入的不规则表面。基于这一假设，我们提出了一种方法，可以利用量子化学方法预测生产润滑剂和冷却剂的潜在效果。

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来源期刊

Journal of Friction and Wear ENGINEERING, MECHANICAL-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

1.50

自引率

28.60%

发文量

审稿时长

6-12 weeks

期刊介绍： Journal of Friction and Wear is intended to bring together researchers and practitioners working in tribology. It provides novel information on science, practice, and technology of lubrication, wear prevention, and friction control. Papers cover tribological problems of physics, chemistry, materials science, and mechanical engineering, discussing issues from a fundamental or technological point of view.