Pencil Hardness Testing
This product is designed and manufactured according to GB/t6739-1996. The resistance of the painted surface to the other hard object acting on it, which is to determine the resistance of the paint film to deformation, indicated by the pencil number, is suitable for the hardness test of the painted film. The tester should ensure that the weight of weight 100+/-50g is applied vertically to the intersection point between the pencil lead and the test bench, so that the Angle between the pencil and the test bench remains unchanged at 45 degrees. The test stand can be moved and scratched with a pencil.
Sanling h-6h, pencil preparation, cut off the wooden rod to expose 3mm lead core, draw a circle on sandpaper, grind the pencil point into a place to make the edge sharp
The test must be carried out at a temperature of 23+/-2º c and a relative humidity of 50+/- 5%.
