The cause of bending during the powder coating of aluminum profiles

The reason for the occurrence

1. Pre-treatment oil removal is not clean

2. Chrome film weight is not up to standard

3. Powder adhesion and bending performance are poor

4. The curing temperature is not enough

Countermeasures.

1. De-oil etching amount ≥ 1g/m2, chromium film important ≥1g/0.6-1.2gm2

2. Adjust the powder formula

3. To regularly track the actual situation of furnace temperature, the requirements to reach 200 degrees C±10, insulation time 10-13min, can refer to the vertical furnace temperature setting standards for adjustment.