Galvanized fence powder coating process: 1. To make the powder coating characteristics can give full play and extend the service life of the coating, the coating surface breaking strict first surface pre-treatment. 2. When spraying, be coated must be completely grounded, in order to increase the efficiency puffing powder coating. 3. have a greater surface defects to be coated should Scraping conductive putty, to ensure smooth and smooth feel of the coating. 4. Spray the object objects need to be heat-curing, curing conditions prevail powder product cost technical indicators Shandong galvanized spray fence, but must be sufficient to ensure that the curing temperature and time sufficient to avoid causing mass curing accident. 5. Immediately after dusting checks should be promptly treated if found defective, if a defect is discovered after curing, its small range without affecting only partially been painted surface decoration, can be repaired with colored powder diluted with acetone, if the scope of the big affect the surface quality, use sandpaper, then spray once or paint remover to remove the coating, re-Suo powder. 6. After recovering powder to be screened to remove debris, by mixing action with the new powder. Heat galvanized fence: uneven due to the casting wall thickness galvanized spray fence manufacturers in the heating, cooling and phase change process, will produce effects and organizational stress. Also after the machining of large parts of its internal residual stress is also easy, all of which stress must be eliminated. Stress relief annealing heating temperature is generally 500 ~ 550 ℃ holding time of 2 ~ 8h, and then furnace cooling, this process eliminates the use of 90 to 95% by casting stresses, the cast iron structure, but does not change. If the temperature exceeds 550 ℃ or holding time is too long, it will lead to graphite, the casting strength and hardness decreased. When casting cooling, surface and thin section was often produce white. White tissue hard and brittle, poor processing performance, easy to peel off. Therefore annealing method must be used to eliminate white tissue. During the high-temperature insulation, high travel cementite eutectic cementite decomposition of graphite spray Qu galvanized guardrail, nursing a cold during the subsequent secondary cementite and eutectoid cementite decomposition also occurred graphitization process. Due to the decomposition of cementite, resulting in decrease in hardness, thereby improving the machinability. Qu galvanized spray hot dip galvanized guardrail fence _ _ St. yup yup metal provided by Linqu St. metallwarenfabrik. Linqu St. Ye metallwarenfabrik (www.shengyehl.com) strong, credible, Shandong Weifang metal building materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the holy Ye into the brilliant metal and you work for a better future!