Surface coating manufacturing process of construction machinery products is an important part. Rust-proof, anti-corrosion coating quality is an important aspect of the overall quality of the product. Appearance of the product quality is not only reflected in the product protection, decorative properties, but also constitute an important factor in product value. The painting equipment during the coating process is a vital part of the hungry. The main painting surface preparation before painting equipment is divided into equipment, painting equipment, coating drying and curing equipment, mechanized transportation equipment, clean air temperature and humidity for equipment and other ancillary equipment. Painting refers to metals, plastics, wood and other materials processed into products, covering the surface protective layer or decorative layer, with the development of industrial technology development dip coating equipment, our coating technology and equipment experienced by the hand-to development of machinery and equipment to the automatic production line, coating process is generally as follows: pre-treatment, grinding → painting → drying or curing → waste treatment. Coating equipment is to complete these coating machinery and equipment used in the process. Development of industrial coating equipment the true origin of the introduction of the technology in the 1950s the Soviet Union. From the beginning of the 1960s, due to the light of the development of painting equipment, first appeared in the bicycle manufacturing industry automated production lines, the main task of painting industry during this period was mainly to corrosion. But with China's economic development, as well as the development of coating technology abroad spray painting equipment room, my painting technology began rapid development through the exchange of coating equipment oven technology transfer and foreign technology in the production of paint automation booming promote the use of electrostatic spraying and electrophoresis coating technology, development and promotion of powder coating technology, in particular household appliances, household hardware, steel furniture, aluminum components, electrical products, automotive and other fields, so that Tu mounted equipment has been significant progress and rapid development. Methods and techniques of electrophoretic coating (1) electrophoretic coating metal surfaces in general, the process is: precleaning → on-line → degreasing → washing → rust → washing → neutralization → washing → phosphate → washing → passivation electrophoretic coating → → → ultrafiltration tank cleaning washing → drying → offline. (2) the substrate to be coated and pre-treatment can have a significant impact on the electrophoretic coating. Casting generally use sand or shot blasting rust, remove dust with a cotton surface, with the 80 # to 120 # sandpaper to remove surface residual steel shot and other debris. Steel surface using degreasing and rust treatment of the surface is too high, phosphating and passivating surface treatment. Ferrous metal workpiece before anode electrophoresis phosphate treatment must be carried out, otherwise the film's poor corrosion resistance. When the phosphate treatment, generally used zinc phosphate coating thickness of about 1 ~ 2μm, requires fine and uniform crystalline phosphate coating. (3) in the filtration system, generally use a filter, the filter net bag structure, a pore size of 25 ~ 75μm. Electrophoretic coating through a vertical pump to filter for filtering. From comprehensive replacement cycle and film quality and other factors to consider, the best aperture 50μm filter bags, which can not only meet the quality requirements of the film, but also to solve the congestion filter bag. (4) the circulatory system of the size circulation electrophoretic coating, a direct impact on the quality of the bath stability and film. Increase the circulation amount of precipitation and bubble bath reduced; but bath accelerate aging, energy consumption increases, bath stability deteriorates. The bath control cycles 6-8 times / h more desirable, not only to ensure the quality of the film, and ensure the stable operation of the bath. (5) With the extension of production time, anode diaphragm impedance increases, the effective operating voltage drop. Therefore, the production should be based on the voltage losses, and gradually increase the power supply operating voltage to compensate for voltage drop anode diaphragm. Coating equipment dusting room, Sino painting equipment (certified), Qingdao coating equipment provided by Qu Sino Painting Equipment Co.. Linqu Sino Painting Equipment Co. (www.wfjn.com) (www.wfjn.com) (www.wftcsw.com) is an industry leader in Shandong Weifang, industrial automation control systems and equipment, over the years, the company implementing the scientific management , innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Sino painting equipment in leadership with the staff warmly welcome all inquiries negotiations to create the painting equipment Sino better future.