Study the reuse possibility of tempering lubricant for cold-rolled strip wet-rolling processing

IF 1.8 4区 工程技术 Q3 ENGINEERING, CHEMICAL
Jigang Zhao, Weimin Chen, Junjian Zeng
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Abstract

In the wet rolling process of industrial cold-rolled strips, the tempering lubricant was discarded after one-time use, which resulted in huge waste and high costs for wastewater treatment. In order to explore the reuse value and feasibility of the tempering lubricant, the influences of industrial rolling were to be studied first. In the comparison of before and after-use- tempering lubricant, the surface tension decreased by 34%, and the physicochemical indicators such as electrical conductivity, pH, and total alkali value decreased by 4%–14.3%. In terms of the components and related effects, about 15% of heavy organic matter, such as fatty acids and alcohol amine was responsible for lubrication, rust prevention, and corrosion inhibition. These heavy organic solutes would reduce by 2%–6%, with impurities increasing after rolling. However, the waste tempering lubricant still had a high reuse value. Further from the influence of impurities and microorganisms, it was concluded that if the solid powders were filtered out, the bacteriostatic agent was added after 3 days, and the changes in the effective substance concentration of the tempering lubricant were mastered to replace 1/3 of it in time during recycling, then the reuse of the tempering lubricant was feasible.

冷轧带钢湿法轧制回火润滑油再利用的可能性研究
在工业冷轧带钢的湿法轧制过程中,回火润滑剂一次使用后就被丢弃了,这造成了巨大的浪费和高昂的废水处理成本。为了探索回火润滑剂的再利用价值和可行性,首先对工业轧制的影响进行了研究。在使用前和使用后的回火润滑剂的比较中,表面张力下降了34%,电导率、pH值和总碱值等物理化学指标下降了4%-14.3%。就成分和相关效果而言,约15%的脂肪酸和醇胺等重有机物负责润滑、防锈、,以及腐蚀抑制。这些重有机溶质会减少2%-6%,轧制后杂质会增加。然而,废弃的回火润滑剂仍然具有很高的再利用价值。进一步从杂质和微生物的影响得出结论,如果滤出固体粉末,则在3 天,掌握回火润滑剂有效物质浓度的变化,在回收过程中及时更换1/3,回火润滑剂的重复使用是可行的。
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来源期刊
Lubrication Science
Lubrication Science ENGINEERING, CHEMICAL-ENGINEERING, MECHANICAL
CiteScore
3.60
自引率
10.50%
发文量
61
审稿时长
6.8 months
期刊介绍: Lubrication Science is devoted to high-quality research which notably advances fundamental and applied aspects of the science and technology related to lubrication. It publishes research articles, short communications and reviews which demonstrate novelty and cutting edge science in the field, aiming to become a key specialised venue for communicating advances in lubrication research and development. Lubrication is a diverse discipline ranging from lubrication concepts in industrial and automotive engineering, solid-state and gas lubrication, micro & nanolubrication phenomena, to lubrication in biological systems. To investigate these areas the scope of the journal encourages fundamental and application-based studies on: Synthesis, chemistry and the broader development of high-performing and environmentally adapted lubricants and additives. State of the art analytical tools and characterisation of lubricants, lubricated surfaces and interfaces. Solid lubricants, self-lubricating coatings and composites, lubricating nanoparticles. Gas lubrication. Extreme-conditions lubrication. Green-lubrication technology and lubricants. Tribochemistry and tribocorrosion of environment- and lubricant-interface interactions. Modelling of lubrication mechanisms and interface phenomena on different scales: from atomic and molecular to mezzo and structural. Modelling hydrodynamic and thin film lubrication. All lubrication related aspects of nanotribology. Surface-lubricant interface interactions and phenomena: wetting, adhesion and adsorption. Bio-lubrication, bio-lubricants and lubricated biological systems. Other novel and cutting-edge aspects of lubrication in all lubrication regimes.
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