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(KODEST)Testing method for paint film performance

dgkede
2025-06-26
1. Determination method for corrosiveness of sharp border:
(1) Measurement steps

1. Preparation of test pieces
A paper cutting blade that meets the requirements is degreased and then subjected to zinc salt phosphating treatment;
Observe the state of the phosphated blade under a metallographic microscope, select blades with good crystalline state of the phosphide film and consistent crystalline state of the phosphide film at the blade edge, number them, and prepare for electrophoresis;
Prepare electrophoretic paint film according to standard requirements. In order to ensure that the film thickness of each group of blades after electrophoresis is the same, attention should be paid to the placement of the blades during electrophoresis, with the blades facing towards the electrode and the side with grooves on the blades facing in the same direction. Ensure a 2:1 ratio during electrophoresis;

After electrophoresis coating, rinse the blade and let it stand for 10 minutes before drying it according to standard conditions;
Use a thickness gauge to measure the paint film thickness of the blade.

Results are quantified based on the level of damage observed, enabling the selection of appropriate paints for specific industrial or commercial purposes.

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