Pretreatment Process quality directly affects the quality of the powder coating spray processing factory's official website, the former handled properly, causing the film easy to fall off, bubbling phenomenon. Therefore, the first task must be stressed. For sheet metal stampings chemical pre-treatment method can be used. Ie: go to rust oil → → washing → phosphate (or purified) and so on. Most surface rust or thicker workpieces, using sandblasting, shot blasting and other mechanical methods to rust spray processing factory, but after a mechanical descaling should ensure that the workpiece surface is clean, you can not scale. Putty. Scraping the workpiece defect extent conductive putty, sanded smooth after drying spray processing factory phone, you can be the next procedure. Protection (also known as shield cover). If some parts of the workpiece does not require a coating, can be used before the warm-up, such as plastic protection cover up 10 years focused spray processing factory, in order to avoid the spray paint. Preheat. Generally do not need to warm up. If a thicker coating layer is required, the workpiece can be preheated to 100 ~ 160 ℃, which can increase the coating thickness. Third, the construction of unsaturated polyester putty 1. After the primer is completely dry, you can carry out construction putty. 2. After opening the lid, the first barrel putty mix, add hardener rata allocation of uniform construction can be carried out scratch. 3. First scrape a 15 # putty, putty Zaigua two 11 #, 15 # and then three putty. 4. Putty scraped off after each interval of 4 hours sanding, and then the next one Zaigua putty, the last one to be carefully polished. If the winter temperature is too low, the need to extend the grinding time or adding driers, adjust the curing time. 5. With a good putty general shall, within 10-30 minutes run out, according to the construction needs of the applicable time can also be adjusted by adjusting the amount of curing agent. 10 years of professional spraying processing factory | spray processing factory | Sand painting hung hardware appliances provided by the Dongguan City, Sha Hong Hardware Appliance Co., Ltd.. Dongguan City, Sha Hong Hardware Appliance Co., Ltd. (www.dgshahong.com) strong, credible, in Dongguan, Guangdong spraying equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the sand painting hung hardware appliances into the brilliant and you work for a better future!