In the kneading process of aluminum plate, it is very likely that the appearance of skinning or bubbles, in the end, what is the reason for the formation? What should be used to eliminate it? Now by the aluminum plate manufacturer for you to solve the problem! What is bubble or skinning: in the appearance of products appear convex bubble, common in the head, tail, intact called bubble, has ruptured called skinning.
Aluminum plate kneading bubbles, skinning causes kneading cylinder, kneading pad wear super poor, kneading cylinder and kneading pad scale cooperation is not proper, the use of gasket diameter difference beyond the promised value; kneading cylinder and kneading pad is too dirty, sticky with oil, moisture, graphite, etc.; lubricating oil contains water; ingot appearance shovel groove is too much, too deep, or the appearance of ingot has air holes, trachoma, loose tissue, oil, etc.; replacement of the alloy, the cylinder is not cleaned! Clean; the temperature of kneading cylinder and kneading ingot is too high; the temperature and scale of ingot are beyond the promised negative error; the ingot is too long, filling is too fast, and the temperature of ingot is not uniform, which causes non-drum filling, thus the exhaust in the cylinder is not complete, or the operation is improper, and the exhaust process is not carried out; the planning of mold holes is unreasonable, or the cutting of residue is improper, the residue in the diverter holes and the guide holes is partially brought out, and the gas in the void enters into the appearance when kneading.
Elimination of bubbles and skinning when kneading aluminum sheet. Reasonable planning of kneading cylinder and kneading pad cooperation scale, often check the scale of things to ensure that meet the requirements, kneading cylinder belly to repair in time, kneading pad can not exceed the difference; things, ingot appearance to keep clean, lubrication and dry; replacement of alloy, thoroughly clear the cylinder; often check the equipment and instruments, to avoid high temperature, speed is too fast; strict implementation of the process regulations and the guidelines; reasonable planning, production molds The guide hole and diversion hole are planned to be 1°-3° within the slope; strict operation, correct shear residual material and exhaust thoroughly. After the expert's Q&A, I believe we have an in-depth understanding of the causes and elimination of aluminum plate kneading bubbles, skinning, and avoid these problems in daily production, you can reduce losses and improve the yield.
