The hardness of the coating film is a necessary index for quality certification in the paint manufacturing and coating use (coating) industry. The pencil scratch method to test the hardness of the coating film is a test method that has been widely used internationally since the 80s. China has also promoted this test method in the development research and industrial production of coatings. The instrument can be used in the laboratory or on the construction site and can be used to identify the hardness of the coating film in any direction.
Ordering information:
TR 5105/1 - Desktop Pencil Hardness Tester
1. How it works
This instrument is mainly composed of a pencil holder and a test bench, and the pencil holder and the column form a four-link structure, which ensures that the weight of the weight acts vertically on the intersection of the pencil lead and the test bench, and makes the pencil and the test bench at an angle of 45 °, and remains unchanged, the test bench can move horizontally and longitudinally, and the paint sample is fixed with it, and the sample slides in the direction of the scratch, and the pencil draws the corresponding trajectory on the test piece. Different pencils are used to draw different marks, and the hardness value of the coating film can be determined.
2、Standard configuration
·Pencil hardness tester 1 set
·3 weights (2 pieces of 250 grams, 1 piece of 500 grams)
·One balance weight
·13 Chinese pencils 6B--6H
·The size of the test platform is 120mmx80mm
