There are many things that aluminum profile manufacturers need to pay attention to during the production of aluminum profiles, and they must be handled in a standardized manner.

The brittleness of aluminum alloy profiles has always been a factor that has troubled the normal operations of some profile companies. The brittleness of profiles has more or less affected the market share and market share of these profile companies, both in terms of cross-sectional appearance and the recognition of door and window assembly plants. User reputation. The brittleness of the profile is basically fully reflected in the physical and mechanical properties of the product. Its main characteristics are: chipping during cutting and cold punching rupture. There are many reasons for poor physical and mechanical properties of profile products.

Mainly manifested in the following categories:

1. Unreasonable formula and mixing process:

1. Too much filler;

2. Type and quantity of impact modifier to be added;

3. Too much or too little stabilizer;

4. Too much external lubricant is used;

5. The sequence of hot mixing and feeding, temperature setting and aging time are also decisive factors for the performance of the profile.

2. The extrusion process is unreasonable:

1. The material is excessively or insufficiently plasticized;

2. Insufficient pressure on the machine head;

3. The low molecular components in the product are not discharged;

4. The screw torque is too low;

5. The traction speed does not match the extrusion speed.

3. Unreasonable mold design:

1. The cross-section design of the die is unreasonable, especially the distribution of internal ribs and the treatment of the interface angle. This will cause stress concentration, which requires us to improve the design and eliminate right angles and acute angles at the interface.

2. For the performance degradation caused by poor confluence of the shunt ribs, it is necessary to appropriately increase the length of the ribs and the outer surface, the ribs and the ribs, or increase the compression ratio to solve the problem.

3. Uneven material discharge from the die causes the profile wall thickness to be different, or its density to be inconsistent. Industrial aluminum alloy profiles also result in differences in mechanical properties between the two sides of the profile. During experiments, we sometimes cold punch one side to pass and the other to fail, which proves this point.