Our Commitment to Quality Assurance - 7 Stages of Testing
TEST 1 - 100% Visual Test:
The 100% visual test involves a thorough inspection of every coated part to ensure consistency and identify any defects. Trained inspectors examine each part under proper lighting conditions to check for coating uniformity, coverage, and any imperfections. This final check ensures that only parts meeting the highest quality standards are delivered to customers.TEST 2 - Adhesion Test:
The adhesion test ensures that the powder coating properly bonds to the substrate. This is typically done using cross-hatch or pull-off methods. In the cross-hatch method, a grid pattern is scored into the coating, and tape is applied and removed to check if any coating peels off. The pull-off test involves applying a perpendicular force to the coating until it detaches, determining the strength of adhesion.TEST 3 - Thickness Test:
The thickness test measures the thickness of the applied powder coating to ensure it meets specified standards. This is done using a dry film thickness gauge, which provides an accurate reading of the coating’s thickness in micrometers or mils. Proper thickness is essential for achieving the desired protection and finish.TEST 4 - Cure / Hardness Test:
The cure test confirms that the powder coating has fully cured, ensuring its durability and performance. This is usually verified using a solvent rub test, where a solvent (such as MEK) is rubbed on the coating to see if it softens or dissolves. Alternatively, a pencil hardness test can be performed to measure the hardness of the coating, indicating proper curing.TEST 5 - Gloss and Appearance Test:
The gloss and appearance test measures the level of gloss on the coated surface and checks for visual defects such as orange peel, pinholes, or color inconsistencies. A gloss meter is used to measure the reflection of light, while visual inspections are conducted to ensure the coating meets aesthetic requirements.TEST 6 - Impact Resistance Test:
The impact resistance test evaluates the coating's ability to withstand mechanical impacts without cracking or losing adhesion. An impact tester drops a weighted object onto the coated surface, and the coating is then inspected for any signs of damage or detachment. This test ensures the coating can handle potential impacts during use.TEST 7 - Bend Test (Flexibility):
The bend test assesses the flexibility and elasticity of the powder coating. The coated sample is bent around a mandrel, and the coating is examined for cracks or detachment from the substrate. This test ensures the coating can flex without damage, which is important for parts that may experience bending or deformation.
These tests collectively ensure that the powder coating provides a durable, high-quality finish that meets both industry practices and customer expectations.