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Research on Caster Oil-based Cold Rolling Oil

Author: LiXiangZuo
Tutor: WeiYiLiang;HuWenYun
School: Wuhan Polytechnic University
Course: Applied Chemistry
Keywords: castor oil cold rolling oil emulsifying properties anti-corrosion properties extreme pressure properties antioxidant properties
CLC: TE666
Type: Master's thesis
Year: 2011
Downloads: 9
Quote: 0
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Abstract

As an essential lubricant of rolling process,cold rolling oil has become one of the most important factors restricting the metal rolling. Because of the environmentalpollution and the high cost of the traditional rolling oil based on mineral oil, the preparation of high-performance and environment-friendly cold rolling oil is imperative.Castor oil is abundant in resource of which is available readily of raw materials with friendly environment. Castor oil was selected as the research object in this paper. The various aspects of performance of a mixture system of castor palm oil and pure castor oil were studied as the basic rolling oil respectively.The key properties of castor oil as based-oil were investigated in this paper. The viscosity-temperature property was studied by means of viscosity instrument. The tribological properties were evaluated on four-ball friction and wear testers. The thermal stability property was investigated by means of TG/DTA integrated thermal analyzer. And the hydrolytic stability was investigated in experiment. The results indicate that castor oil with good lubricating property and detergency and hydrolytic stability is suitable for general oiliness additive of rolling steel oil.By investigating ESI, particle size distribution, Plate-out performance and the other factors, the emulsifier was determined at last:castor-palm based system (1.45% EM2 and 0.35% EM5); castor-based system:(2.4% EM2 and0.6% EM5).The single-board experiment, which was usually used to research the anti-rust effects of petroleum products, was taken to experiment at distilled water and seawater which was compounded with some chemicals. The results indicated that a compound with ARA4 and ARA1 showed the best anti-rust effect according to corrosion proportion. The content of ARA1 was 0.6% in castor oil system and 0.4% in mixed oil system, the content of ARA4 was 0.2% in two systems. The tribological properties were evaluated on four-ball friction and wear testers, according to PB and PD value, complex way and content of anti-wear were same in two systems:the content of EPA6 was 0.8%, the content of EPA8 was 1.0%.The antioxidant property was studied by rotating oxygen bomb method, complex way and content of the antioxidant were same in two systems:the additive content of AO1 and AO3 was 0.5% respectively.Anti-impurity oil capacity of mixed oil was studied in the experiment after all kinds of additives were determined, the results showed that the rolling oil could meet the field requirements while the content of impurity oil was less then 20%.Finally, by detecting all relevant indicators of cold rolling oil and completing the small mill test, the properties were described as follows, castor-palm based rolling oil:saponification value 186.8 mgKOH/g, acid value 5.684 mgKOH/g, viscosity index 157, PB value 215 kg, PD value 315 kg, rotating bomb time 92 min, antirust level at 50% moisture content was la;Castor oil-based cold rolling oil: saponification value 179.5 mgKOH/g, acid value 6.571 mgKOH/g, viscosity index 109, PB value 171 kg, PD value 315 kg, rotating bomb time is 54 min, antirust level at 50% moisture content is lb. The results showed that, the performances of rolling oil meet the industry standard, and the palm oil could be replaced completely by the castor oil in the rolling oil.

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