This is the second video in a series on Powder Coating Quality Control Testing by S&B Finishing

MEK Solvent Test – ASTM D5402-15

This is the MEK Solvent Test. Every powder has a curing temperature, if it does not reach the temperature, there is the possibility of a flaking or chip off.

Methyl Ethyl Ketone (MEK) is the solvent used in this test. It is applied to the finished product with a Q-Tip with a series of 25 strokes. No change in the finish means the powder is cured, no flaking or chipping.

This is the third video in a series on Powder Coating Quality Control Testing by S&B Finishing

Specular Gloss Test – ASTM D523-14

This is the Specular Gloss Test. This test measures the specular gloss of the coating. It measures the gloss unit (GU).

There are 3 categories of the test results. The categories are glossy finish, semi-gloss finish, and flat or matte finish. The levels of finish are determined by our customers needs and our recommendations according to the type of parts being finished.

This is the fourth video in a series on Powder Coating Quality Control Testing by S&B Finishing

Crosshatch Adhesion Test (ASTM D3359-17 Method-B)

This is the Crosshatch Adhesion Test (ASTM D3359-17 Method-B).

This test is accomplished by marking a square with a scalpel on the finished part and applying pressure sensitive tape to the area. The tape is then removed. If there is no paint or coating that is removed from the part on the tape, it has passed the test.

If paint or coating was removed on the tape, there is contamination on the part, and has failed this quality control test.

This is the fifth video in a series on Powder Coating Quality Control Testing by S&B Finishing

Water Break Free Test – ASTM F22-13

This is the Water Break Free Test ASTM F22-13.

The test will determine the cleanliness of parts about to be powder coated.

Water is sprayed upon the parts, if the water flows through the part uniformly, the part is ready for painting. If water droplets occur on the part, there is contamination, and the part is not ready for powder coating.

This test is performed after the washing process to make sure there is no contamination. This will make for a more effective application of the powder coating process.

This is the sixth video in a series on Powder Coating Quality Control Testing by S&B Finishing

Mil Thickness Measurement Test ASTM D7091-13

This is the MIL Thickness Measurement Test ASTM D7091-13.

This test measures the thickness of the coating on the part. We use a Mil thickness gage. The standard range is 2 Mil to 4 Mil. One Mil is one-thousandth of an inch.

Some customers parts go outside the range per their request, but generally all coatings stay within the range.