Blog 2017-08-21 3,002 0
The car has always had a rusting problem, and the rust will not only affect aesthetics, but also pose a threat to driving safety. So it is important to derust cars. Let me introduce you some common rust removal methods.
The easiest way to deal with it, you can use our De-Rust Lubricating Spray.
Manual de-rusting is one of the simplest methods, mainly using a scraper, emery cloth, wire brush, hammer, chisel and other hand tools. Perform manual grinding, brush, shovel, and percussion to remove rust.
Mechanical de-rusting is used to remove rust on the surface of the workpiece by the impact and friction of mechanical one way. This method has the characteristics of high efficiency and good quality.
Common machinery has a pneumatic brush, pneumatic gun, pneumatic wheel, electric brush, electric grinding wheel, electric power division rust and electric sleeping. When using mechanical de-rusting, it should be noted that the workpiece table should not be overworn and damaged the surface or the surface of the workpiece is too polished to cause trouble for the coating operation.
The jet method includes blasting, dry blasting, wet sand blasting, and high-pressure water. Among them, the wet sand blasting method has a good effect and is widely used in the auto repair industry.
Chemical de-rusting is the process of reacting with a metal weight with an acid solution that dissolves rust to achieve the purpose of removing rust, sometimes called pickling. Acid wash commonly used inorganic acid has sulfuric acid, hydrochloric acid, nitric acid, phosphoric acid and hydrofluoric acid etc., the commonly used organic acid has acetic acid, citric acid etc., the method of pickling is immersed, spray, apply pickling paste and so on.
The process of pickling process is picking and rust – cold water washing ~ hot water washing ~ treatment ~ cold water washing ~ surface transformation.
Electrochemical de-rusting is the method of removing rust by electrochemical action in the pickling process. Is divided into the workpiece as the anode, use as a cathode, such as lead, copper, steel pickling solution as an electrolyte and the workpiece as the cathode, anode erosion with lead, aluminum or antimony alloy as anode cathode erosion method. The power supply can be used to ac or dc, which is advantageous to dc. This method can speed up the removal of rust and save acid.
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