In the production process of Aluminum Extrusion Box, we often encounter problems such as false joints on the surface, scratches on the surface, mechanical lines, black lines on the surface, unevenness on the surface, and serious weld seams. After the surface treatment of the profile, the black band or serious color difference makes the product. Scrap, causing irreparable losses. The low welding force is because the extrusion force is too low. The factors that cause the low extrusion force include mold factors and process. Extrusion temperature and extrusion speed The high temperature of the aluminum rod is conducive to the diffusion and bonding of the metal, but it also leads to the aggravation of the metal bonding die phenomenon. At the same time, the high temperature leads to the acceleration of the growth and growth rate of the metal structure and grain. Will make the weld structure coarse. If the extrusion speed is too high, the metal deformation work will increase, and the metal temperature will increase greatly. In addition, if the extrusion temperature is too high, the extrusion force will be reduced, thus reducing the welding force.