During the production or transportation of 5052 aluminum plate, due to improper operation, various defects will occur. The presence of these defects will affect the performance of the aluminum plate. Serious defects may even cause the aluminum plate to be scrapped, causing serious economic problems for customers and manufacturers. loss. Henan zhongxin Aluminum Industry Co., Ltd. is located in Gongyi, Henan Province. It has nearly 20 years of experience in aluminum sheet processing and production. The processing technology is mature. The 5052 aluminum sheet produced has few defects and the flatness is flat. It is very careful in packaging and transportation.
Below, we will understand the type of aluminum plate defects and the causes, I hope you pay more attention. The types of aluminum plate defects are divided into three categories: plate type, size, and surface quality.
First, the plate type
1.Waves. The main reasons are as follows: 1 unbalanced roll gap adjustment, unreasonable roll type control; 2 uneven lubrication and cooling, uneven deformation of plates and belts; unreasonable distribution of 3 passes; 4 poor material type ; 5 winding tension is unevenly used.
2.Staggered layer: Irregularly displaced between the end face layer and the layer, resulting in uneven end faces. Causes: the blank is not flat; the rolling mill unwinding, the winding tension is not properly controlled; the flattening roller is not properly adjusted.
3.collapse: the core is severely deformed, the shape of the roll is not round. Cause: Improper tension during crimping; external force is oppressed.
4.lateral bending: the performance of the plate shape curved to one side. Cause: The leveling machine is not stressed enough.
Second, the size
The dimensional defects are mainly reflected in the error range of the thickness/width/length of the aluminum plate. It is related to the adjustment of the thickness gauge, the disc cutter and the shearer.
Third, the surface quality
1.embossing. The chromatic aberration of the surface of the strip is periodically printed during the rolling process due to irregular chromatic aberration of the roll surface due to wrinkles, broken strips, and the like.
2.curled edge. The main causes are: 1 excessive reduction during rolling; 2 uneven distribution of lubricating oil during rolling; 3 improper adjustment of cutting edges during shearing.
3. The surface of the aluminum plate is bundled with scars. Cause: Mechanical or manual displacement of the aluminum plate between the layers
4.the performance of the aluminum plate surface has a line of scars. Cause: The guide plate or the flat roll has convex or sticky aluminum; scratches occur during the shearing process; manual inspection is improperly carried out.
5.oil pollution: the surface is dirty. Cause: The cooling oil is dirty and the air blow is weak.
6.the side is curved. The main reasons are: 1 rolling mill end pressure is not the same; 2 rolling mill feeding is not correct; 3 plates, the thickness of the material on both sides of the material is inconsistent; 4 roller preheating or emulsion flow control is improper; 5 process lubricant concentration is too high, resulting Slip; 6 before the shearing, there is a wave in the strip, and the wave expands after being sheared.
Faced with these possible defects, aluminum plate manufacturers need to strictly control the production process, layer quality inspection, careful packaging, and safe transportation. Minimize damage to the aluminum plate and ensure the quality of the aluminum plate.
