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How to clean oil on tractor parts
Oil has plant, animal, and mineral differences. Animal and vegetable oils are relatively lively and easily react with acids and alkalis, so they are generally washed with an aqueous solution of caustic soda (10% NaOH) and removed. Mineral oil is not active, not easy to react with acid and alkali, so it is generally necessary to add emulsifiers in the acid and alkali solution to weaken the binding force of the oil and metal, so that the oil film is broken into oil bubbles and the fat is accelerated. (1) When cleaning steel or cast iron parts, generally use an aqueous solution containing 10% caustic soda and 0.2% emulsifier. Heat to 90°C or more and bake the parts for about 30 minutes. In order to improve the fat removal effect, it is necessary to stir the solution. In order to avoid the damage of alkali to the metal, after removing the parts that have been boiled with hot alkaline water, the saponification product should be cleaned with a cloth or a brush, and finally rinsed with hot water at 60-80°C, self-drying, parts with small holes. Dry with compressed air. (2) In the aluminum alloy parts, the aluminum alloy is easily corroded in case of strong alkali, and the solution is cleaned with a solution containing caustic soda 1% and emulsifier 0.4%. (3) Parts made of rubber and cowhide such as leather bowls, leather mats, water blocking rings, oil resistance Circles, etc., are strictly prohibited from cleaning in alkaline or acidic solutions, and can be cleaned with alcohol if necessary. (4)Precision parts such as plunger pair, fuel injection head, bearings, etc., should be cleaned with diesel oil or gasoline, and can not be washed with alkaline water.