The cleaning effect of the shot blasting machine can be tested by the following methods:
1. Visual inspection:
Directly observe the surface of the workpiece to check whether impurities such as scale, rust, dirt, etc. have been removed and whether the surface has reached the expected cleanliness.
Check the roughness of the workpiece surface to determine whether it meets the requirements.
2. Surface cleanliness detection:
Use the comparison sample method to compare the treated workpiece surface with the standard cleanliness sample to evaluate the cleanliness.
Observe the microscopic state of the workpiece surface with the help of a magnifying glass or microscope to determine the residual impurities.
3. Roughness detection:
Use a roughness tester to measure the roughness parameters of the workpiece surface, such as Ra (arithmetic mean deviation of the profile), Rz (maximum height of the profile), etc.
4. Residual stress detection:
Measure the residual stress on the surface of the workpiece after shot blasting by X-ray diffraction method, blind hole method and other methods to evaluate the impact of shot blasting on the performance of the workpiece.
5. Coating adhesion test:
The coating is applied on the surface of the workpiece after shot blasting, and then the coating adhesion is tested, which indirectly reflects the impact of shot blasting cleaning effect on coating adhesion.