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High-purity aluminum foil rolling oil oxidation stability and friction performance

Author: LiuJinBiao
Tutor: ZhouYaJun
School: Central South University
Course: Mechanical Design and Theory
Keywords: High purity aluminum foil Rolling oil Oxidation stability Friction
CLC: TG339
Type: Master's thesis
Year: 2008
Downloads: 168
Quote: 0
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Abstract


High-purity aluminum foil because of its soft, cold-rolled surface quality problems often appear the sticky aluminum, scratches, oil spots, these are directly related to the performance of the rolling oil. In order to eliminate this defect and improve, we carried out the oxidation stability performance of the rolling process lubricants and friction performance, in order to improve the overall performance of the rolling lubricants. Use of gas chromatography - mass spectrometry, UV spectrophotometer, the SH0206 transformer oil oxidation stability analyzer, infrared spectroscopy instrument and MRS-10A four-ball test machine on the physical and chemical properties of the base oil of high purity aluminum foil rolling and rolling oil, chemical composition, oxidation The stability and performance and friction properties were measured, and the results show that: now cycloalkanes with high purity aluminum foil rolling base oil content of up to 68.3%, the basis of oil is high naphthenes. Naphthenic ring with side chains join at the tertiary carbon atom adjacent atoms in contact with the oxygen molecules are more prone to oxidation reaction, resulting in poor performance of oil oxidation stability; antifriction rolling process oil formulated anti- grinding performance is poor. For the inadequacies of the current high-purity aluminum foil rolling oil, to carry out a comprehensive study to improve their performance. (1) The infrared spectroscopy analysis shows that the oxidation of the oil is a free radical chain reaction oxidation, produce large amounts of acids, esters and aldehydes, such as product, for this mechanism, the choice of the phenol type antioxidant, and clear the oxidation process of freedom Catalytic Oxidation group; aluminum powder is generated when the rolling oil, optional metal deactivator, the passivation of metal surfaces activity; complex of two materials with significantly improved the oxidation stability of the oil, oil extended the product life. (2) additives to improve the effective means of rolling oil friction performance, this article uses complex optimization techniques to the deployment of long-chain fatty alcohols and long-chain fatty acid ester into more than 10 kinds of additives recipe, based on a large number of experimental studies, the combination of polarity molecular adsorption properties, the comprehensive performance of the study and found that a variety of long carbon chain fatty acid ester compound can significantly improve the frictional properties of the rolling oil and annealing good detergency. Select the laboratory to evaluate the overall performance in good recipe, rolling mill industry experimental results indicate that the development of rolling lubricants can significantly reduce quality defects of high-purity aluminum foil surface the sticky aluminum, scratches, oil spots, significantly improve the quality of its surface. This article has guiding significance for improving the overall performance of high blunt aluminum rolling lubricants, their research has been applied to industrial production, already achieved good results.

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal pressure processing > Rolling > Non-ferrous metal rolling
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