[China Aluminum Network] Stripe profile hot extrusion profile strip defects more than the type of defects, the formation of factors are more complex, here are some common causes and solutions to the stripe to illustrate. 1) Friction pattern; each time the die is pressed on the machine, the lines cannot be matched one by one, and light and heavy. 2) Tissue stripes 3) Surface brightening: Brightness appears in the oxide white material, in most cases it is a straight stripe shape and the width is indeterminate. In the oxidation coloring material, the stripe is in a light color stripe shape. Surface weld stripe: weld stripe, also known as weld pattern, straight long, in the oxidation of white material more light gray, more light color pigment. the reason: one, 1, in the extrusion process. The profile exits the boring hole momentarily and closely to the working belt, or forms a pair of dry friction pairs in the hot state, and divides the working belt into two zones, the adhesive zone and the sliding zone. In the adhesion zone, the metal spots are subjected to forces from at least two sources: friction and shear. 2. When the friction force of the metal point in the adhesion zone is greater than the shear force, the metal dot will adhere to the surface of the work zone of the adhesion zone, and the surface of the profile will be scratched to form a pattern. two, 1. The ingot casting structure is not uniform, components segregate, the ingot surface under the epidermis has a more serious reflection, the ingot uniformity ratio treatment is not sufficient, etc. In the subsequent extrusion process, the surface composition of the profile is not uniform, so that the profile The coloring ability after oxidation is not the same, forming tissue stripes. three, 1. When the friction or deformation of the metal flow is extremely severe, the local temperature of the metal will rise very high; 2. In addition, uneven metal flow can also lead to severe crushing of the crystal grains. Then recrystallization occurs. Resulting in changes in the organization. In the subsequent oxidation process, longitudinal streaks appear on the surface of the profile. In the coloring process, the profile is not colored or shows light-colored stripes. four, 1, die diverter hole design is too small; 2. The depth of the welding chamber is not enough, and there is no guarantee that there will be enough pressure; 3. Insufficient supply of aluminum material in the mold welding room during extrusion; irrational extrusion process and improper lubrication. Our passenger elevators help passengers reach their floors quickly, comfortably, and safely. For tenants, they provide quiet operation, which is especially important at night. For architects, they are easy to integrate into designs and help optimize available building space. For building owners, they help reduce total lifetime costs by providing excellent maintainability and reduced energy consumption. Spacious elevator cars enable passengers and their luggage, or staff and their equipment, to travel comfortably and efficiently through the buildings. Home Elevators,Stair Lift Elevator,Small House Lifts,Home Lift Cost Suzhou Keffran Parts Co.,ltd , https://www.keffran-elevatorsmart.com