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Home > blog > Surface treatment of sheet metal stampings, electric store positioner said general chemical surface treatment.
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Surface treatment of sheet metal stampings, electric store positioner said general chemical surface treatment.
2015-01-17 by xiugai
Surface treatment of sheet metal stampings, said general chemical surface treatment. Process:
Pre-degreasing degreasing → → → cold hot water washing → Mobile Carrier pickling → → in cold water and cold water → surface adjustment → phosphate → cold water hot water → → → pure water and dried
The above process may also make appropriate adjustments based on oil, rust sheet metal stampings situation, with or without pickling process, with or without pre-degreasing. The degreasing and phosphate chemical treatment process is a key step, the two processes directly affect the quality of the workpiece quality chemically treated and rust coating. Relevant process parameters and related auxiliary equipment also affect the quality of surface __ reason can not be ignored.
1.2 Coating Process
As the project a wide range of machinery, specifications, liftstar hydraulic hand truck machine weight, large parts, the general approach to spray paint. Spray tool air spray gun, airless spray gun, air-assisted spray gun and portable electrostatic spray gun. Low air spray gun efficiency (about 30%), high-pressure airless spray gun paint waste, both common feature is more serious environmental pollution, it has been replaced by air-assisted spray gun and portable electrostatic spray gun and being. As the world's first mechanical engineering company --- Caterpillar (CAT) company on the use of air-assisted spray gun on the hood, such as sheet metal cover portable electrostatic spray gun is used. Engineering machinery coating equipment generally use more advanced water rotary spray booth. Small parts can also be used with or without a pump spray booth curtain spray booth, the former has advanced performance, the latter affordable, convenient and practical. Due palet jack to heavy construction machinery and parts machine, heat capacity, so its anti-rust coating drying, the general uniform baking hot air convection drying method. Heat can be adapted to local conditions, the choice of steam, electricity, light diesel oil, natural gas and liquefied petroleum gas.

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