Full automatic Marking Circle With Adhesion Tester

It is the most traditional method in China to evaluate the adhesion of coating and substrate by the circle method.The method through a specially designed instrument on the coating under test continuous draw many of the same diameter of the circle, the circle at a certain distance with overlapping, and then press the circle intersecting part size is divided into seven parts.When evaluating the complete degree of the paint film, the corresponding grade should be evaluated in