Compared with ordinary steel, cold-drawn section steel has greatly improved its performance in various aspects, but some defects will still appear in long-term use, because its surface contains a certain amount of steel components, and long-term exposure to air will cause Oxidation and different degrees of erosion.
Although the cold-drawn steel's own impact resistance is very high, there will also be some rust stains on the surface of the product. Therefore, in order to improve the product quality of cold-drawn steel and extend its service life, these factors should be taken into consideration and phosphating Measures. The specific operation method is to apply an aluminum material or a galvanized component to the defects of the cold-drawn steel, and make the whole piece be quickly converted into a chemical film during the phosphating process, thereby forming a phosphating film. At the same time, the phosphating treatment of cold-drawn steel is a reaction between chemistry and electrochemistry, which can increase the density of metal objects on the original basis, so that cold-drawn steel can effectively resist the phenomenon of corrosion.
Before the cold-drawn section steel is cold-drawn, a baffle should be provided for protection. If the baffle is not prepared, the hoist and the cold-drawing direction should be maintained at 90 degrees, and a closed guide pulley should be used. During operation, the staff must stand behind the protective baffle to prevent the debris generated during cold drawing from jumping out. In addition, a comprehensive inspection of the equipment should be carried out. If sliding or other abnormal problems are found, stop the operation of the machine first, and then let the professional staff go in to check after the steel bars are released to avoid accidents.