来源：http://www.jndclyyxgs.com 发布时间：2021-02-19 18:15:15
Patterned aluminum roll is a product we often use, but what's the matter with the crispy hair of patterned aluminum roll bought by some users? In fact, the crispness of aluminum coil is mainly caused by the production technology of some manufacturers. If the production technology is not up to standard, naturally produced patterned aluminum coil is prone to crispness
According to the analysis of aluminum coil manufacturers, the specific reasons mainly focus on the following three aspects:
1、 Unreasonable design of die section: improper distribution of inner ribs and interface angle will cause stress concentration, which will lead to embrittlement of patterned aluminum. It is necessary to improve the design and eliminate the right angle and acute angle at the interface.
2、 Insufficient die head pressure: the pressure at the die head is directly determined by the compression ratio of the die, especially the length of the straight section of the die. If the compression ratio of die head is too small or the straight section is too short, the product will not be compact and the physical properties of patterned aluminum coil will be affected.
3、 Poor convergence of splitter bars: in this case, it is necessary to increase the length of bars and outer surface, bars and bars confluence, or increase the compression ratio to solve the problem. The change of die head pressure can be adjusted by changing the length of straight section of die head. In the die design stage, different compression ratio can be selected to change the extrusion pressure, but the compression ratio of die head should be consistent with that of extruder screw According to the compression ratio, the melt pressure can also be changed by changing the formula, adjusting the extrusion process parameters and increasing the porous plate.
The above are the common reasons for the embrittlement of patterned aluminum coil products. When purchasing products, users must choose those enterprises with high reputation and strong strength to buy their own products, so as to avoid delaying their normal production because they buy products with substandard quality.