How to remove rust when sand making machine is used for a long time
Sand making machine is an important equipment of the sand making production line. The quality of the equipment and the work efficiency directly affect the output and quality of sand making. Generally, the surface of the sand making machine will appear on the surface of the sand making machine after a long period of wind and rain during use. Rust, wear and other issues, if not handled in time, will affect the production efficiency of the sand making machine, and even cause serious wear and tear of the equipment and shorten its service life.
1. Apply anti-oxidation paint: apply mineral oil, paint or fire enamel or spray on the surface of iron products. Use electroplating, hot-dip plating and other methods to coat the surface of steel with a layer of metal that is not easy to rust, such as zinc, tin, chromium, nickel, etc. These metal surfaces can form a dense oxide film to prevent iron products from contacting with water, air and other substances from rusting. Chemical methods can also be used to form a dense and stable oxide film on the surface of iron products to prevent iron products from rusting.
2. Chemical rust removal: the use of acid and metal oxides to chemically react to remove the rust products on the metal surface of the sand making machine. The said pickling and rust removal method is only suitable for operation in the workshop.
3. High-pressure water abrasive rust removal: the impact of high-pressure water jet and water skid are used to destroy the adhesion of rust and coating to the steel plate. The method has no dust pollution, does not damage the steel plate, greatly improves the rust removal efficiency, and has good rust removal quality. However, the steel plate after derusting is easy to return to rust, and special wet derusting paint must be painted, which will have a greater impact on the coating of general performance paint.
4. Small-scale pneumatic or electric rust removal: Use electricity or compressed air as the power to assemble a suitable rust removal device to perform reciprocating or rotating motion to meet the requirements of rust removal in various occasions. Such as angular pneumatic needle beam rust remover, pneumatic rust hammer, tooth type rotary rust remover, direction grinder, wire brush, etc., belong to semi-mechanized equipment, the tools are light and mobile, and can remove rust more thoroughly. , Old coating, etc., can roughen the coating, but can not achieve high-quality surface treatment quality, and the work efficiency is lower than that of spray treatment.
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