The reasons for brittle aluminium coils and buying advice

The reasons for brittle aluminium coils and buying advice

Patterned aluminum coil is a product we often use, but some users buy the patterned aluminum coil brittle is how? In fact, the aluminum coil is brittle mainly because of the production technology of some manufacturers, production technology is not up to scratch, the natural output of the patterned aluminum coil is easy to have brittle phenomenon.

Specific reasons are mainly concentrated in the following three aspects.

One. Unreasonable design of the cross-section of the mouth mold: the distribution of internal tendons and intersection angle of improper processing will cause stress concentration phenomenon exists, thus leading to brittle aluminum rolls, the need to improve the design and eliminate the intersection at the right angle and sharp angle.

Two. Die head pressure is not enough: die head at the pressure size is directly affected by the compression ratio of the mold, especially the length of the flat section of the mold to determine. Die compression ratio is too small or straight section is too short will cause the products are not dense, affecting the physical properties of patterned aluminum coil.

Three. Shunt tendons convergence bad: for this case, should be appropriate to increase the tendons and the outer surface, tendons and tendons convergence at the length, or increase the compression ratio to solve, die head pressure can be changed by changing the length of the flat straight section of the die head to adjust the flow of material resistance, in the die design stage can choose a different compression ratio to change the extrusion pressure, but pay attention to the head compression ratio to adapt to the compression ratio of the extruder screw, but also by changing the recipe, adjust the extrusion process parameters, add porous plate to change the size of the melt pressure.

These are the common reasons for brittleness of the finished patterned aluminum coil, users in the purchase of products, be sure to choose those with high credibility, the strength of the company to buy their own products, to avoid buying substandard quality products, and delayed their normal production.