Cleaning is the use of a pressure pump for pressurizing the cleaning medium, the surface of the aluminum coil for non-contact type spray or brush contact, so that aluminum is dissolved off the surface oil into the cleaning medium, and then squeezed through wringer rolls and pressure air purge, and even hot air drying specializes in producing pre-painted aluminum, in order to obtain a clean, dry aluminum coil, aluminum coil protective film can be increased to further ensure quality ...... when stained with hard aluminum coil remove asphalt, the If general cleaning agents to no avail, tried to clear a brush, but do not use strong brush, especially iron brush painted aluminum, aluminum coil surface to avoid damage when high temperature aluminum coil, should be allowed to cool after cleaning, do not use cold water to wash. Otherwise, make aluminum coil damage. In addition, at high temperatures with a detergent to clean the aluminum coil, aluminum coil surface will react, lose luster, influence beautiful vehicle in the place where if wet, aluminum coil should be cleaned frequently to avoid salt corrosion on the aluminum surface. determine the assembly and tacking spacing gap welding process, the thermal expansion of aluminum alloy, resulting in reduction of the weld groove gap, welding If you leave before the assembly gap is too small, the welding process will cause the two plates overlap groove, the increased weld plate surface roughness and the deformation; on the contrary, the assembly gap is too large, the welding difficult, and burn the possible Suitable spacing tacking tacking needed to ensure the gap, so the pre-painted aluminum manufacturers, select the appropriate assembly and tack welding gap spacing is an effective measure to reduce the distortion. According to experience, different thickness on the joints more reasonable long-term supply assembly process parameters painted aluminum, painted aluminum, aluminum rolls provided by the Aluminum Co., Ltd. Jinan rolls. Jinan Heshun Aluminum Co. (www.jnhsly.com) strong, credible, in Jinan, Shandong aluminum products industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead rolls in aluminum and you hand into the brilliant, for a better future!