Huadu steel furniture group was founded in 1992, focused on production of filing cabinets, lockers, shelves and other steel office furniture, pickling phosphide electrostatic spraying production line is the huadu steel furniture group spent huge sums to acquire spraying equipment, its performance purpose is very strong, fit huadu steel furniture group adhere to the concept of "only do high-quality steel cabinet".
Huadu steel furniture group large acid pickling phosphating electrostatic spraying line, after pre-degreasing, main degreasing, cleaning, washing, surface adjustment, phosphating, passivation, washing, drying, cooling, electrostatic spraying, curing, cooling and other 13 to the next process.The whole spraying process is about 95-100min.
The whole spraying line is 400 meters in length, including pre-drying line 260 meters, phosphating line 60 meters and curing furnace 80 meters. The extra-long spraying line can make the steel plate get full pretreatment, remove the surface impurities, powder get full chemical reaction, to ensure that the surface of the workpiece spray effect is optimal, powder and steel plate firmly combined, never fall off;The powder spraying room is tailor-made by junhe company, which has the largest domestic sales volume and market share. It adopts a large cyclone secondary recovery device, with a single separation rate of 98%. The nanometer coated filter element can capture dust over 0.1 micron without wasting a little powder.Automatic spraying line, using the world's most advanced Swiss golden horse line, including 12 automatic spray gun, manual spray gun 2, can easily spray a variety of powder, a variety of complex geometric shape of the workpiece, to ensure the quality of spraying.
Pre-degreasing: because many products in the production process, the surface will produce dirt, grease, etc., if the surface is not clean, will affect the effect of the coating film, through pre-degreasing can clean the surface dirt, grease, cleaning process can remove 60% of the oil.
Main degreasing: it is mainly to remove the grease on the surface. This process is the supplement of pregrease, which can better remove the grease on the surface. The treatment time is about 120 minutes.
Cleaning: by cleaning, you can clean the degreasing agent on the surface.
Water washing: this is the supplement of cleaning, in order to fully achieve the cleaning effect, as well as the corners, sides and other parts of the comprehensive cleaning, to achieve a comprehensive cleaning effect.
Table tone: this process is through the chemical reaction of the product surface, so that the product is more suitable for the next process phosphating process surface film.
Phosphating: the so-called phosphating, refers to the product after containing acid solution treatment, chemical reaction and the formation of a stable insoluble film on the surface of the method, the resulting film is called phosphating film.The main purpose of the phosphating film is to increase the adhesion and improve the corrosion resistance of the coating.A phosphating film is produced on the surface of the product. The advantage of the phosphating film is that the powder can be better combined with the product in the later process of powder spraying, so as to achieve a better product appearance.
Passivation: the passivation technology is based on the characteristics of the phosphating film itself. The phosphating film is thin, its free pore area is large, and the corrosion resistance of the film itself is limited.Some are even rapidly yellow and rusted in the drying process, and after phosphating, a passivation sealing treatment can be carried out. The metal exposed in the pores of phosphating film can be further oxidized, or a passivation layer can be formed to fill and oxidize the phosphating film, so that the phosphating film can be stabilized in the atmosphere.
Water washing: cleaning phosphating film surface residual agent.
Drying: through the drying furnace, make the product surface attached to the moisture drying, in order to powder spraying process requirements.
Cooling: as the product passes through the drying oven, the surface temperature of the product is about 140 degrees, so it needs to be cooled to facilitate powder spraying.
Electrostatic spraying, electrostatic spraying, is to make the spray paint particles with negative charge in the dc high voltage electric field, and then under the action of electrostatic field, the orientation to fly to positively charged by spraying the surface, deposit into a uniform solid layer of coating method, the advantages of electrostatic spraying, not or rarely mist flying into the air, so can improve the working environment of workers.Spraying process can be automated, high production efficiency.Compared with other spraying methods can save a lot of paint.The quality of the film, including the finish of the coating adhesion, have been greatly improved.
Curing: powder curing furnace is to allow the powder produced on the surface of the product to melt, so that the powder form a film, so as to improve the appearance of the product, salt spray test and other performance.
Cooling: since the surface temperature of the product is too high when leaving the curing furnace, the surface temperature of the product can reach room temperature through natural cooling.
Through the above 13 processes, ensure that each steel cabinet produced by huadu steel furniture group is of high quality.We have their own adhere to, never compromise, do the product is better!
