Liaocheng hot dip galvanized fence, hot dip galvanized fence sales, St. yup yup metal provided by Linqu St. metallwarenfabrik. Road Zhiyuan, tempering forward. Linqu St. Ye metallwarenfabrik (www.shengyehl.com) to become and you win, symbiosis, strategic partners before the trip, the more determined to become the most influential metal building materials business, and you leap together to success! 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 in powder product cost technical indicators prevail, 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 After the impact of surface quality, use sandpaper, then spray with a paint remover to remove one or spray coating galvanized guardrail, re-Suo powder. 6. After recovering powder to be screened to remove debris spray galvanized fence prices, mixing with new powder by a certain percentage. Heat galvanized fence: casting wall thickness due to uneven 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 hot-dip galvanizing spray insulation fence, swim and high cementite eutectic cementite decomposition of graphite hot dip galvanized fence advantages and secondary cementite eutectoid cementite in the subsequent cooling process protection also decomposition occurs graphitization process. Due to the decomposition of cementite, resulting in decrease in hardness, thereby improving the machinability.