In all normal production lines, there is a problem of overheated galvanized edges, which causes unwinding and curling. The manufactured products are all scraps, and the damage is quite large. Therefore, it must be solved from the perspective of reducing waste loss. However, reducing the production line rate will aggravate the overheated galvanizing of the edge, so the first step can choose to increase the standard pressure of the demister to reduce the overall amount of hot galvanizing. According to the manufacture of a part of the products with low hot-dip galvanization, a period of time can be settled, so that it will not cause a lot of waste, and it can also calmly solve the problem. Generally speaking, edge overheated galvanizing mostly occurs when the amount of hot galvanizing is high and the working pressure of the demister is low, so increasing the working pressure of the demister can usually cause a certain practical effect.
The second step is the difference between the raw material problem, the zinc pot temperature problem or the main parameter problem of the demister. The way is to observe the edge of China galvanized steel roofing sheet for sale. If it is overheated galvanizing caused by slag, it is at the edge position. If the edge is rough, white, and weak in texture, it is usually caused by raw material problems. At this time, you can search again. The raw materials are certified to see if there is a trim condition, whether there are cracks and jagged edges, etc. Generally speaking, the method of adjusting the demister and applying the partition plate caused by the overheated galvanized edges caused by the raw materials is not effective, only the raw materials are replaced.
If it is obvious from the edge of the steel chain exiting the demister that the crystal has just started, the zinc flower on the edge of the galvanized sheet after cooling is very small, it is likely to be caused by the low temperature of the zinc pot, be sure to raise the temperature of the zinc pot immediately.
If the edge of the China supply galvanized steel roofing sheet is smoother and thicker, it is 4-10mm away from the edge, it will be overheated galvanizing caused by the poor cooperation of the main parameters of the demister. At this time, adjust the angle of the demister and accurately determine the demister. The specific angle of view of the former is very similar to the domestic Kohler demister. It must be carefully adjusted to ensure that the front, rear, left and right perspectives are separated from each other by 1 ° -2 °. In addition, keep the distance between the demister and the steel chain as small as possible.
If you can’t use the left and right methods to clear the problem of zinc connection at the edge, you must shut down to adjust the gap of the demister to make the gap of the demister larger and further improve the scraping force of the edge.