Details
Product Name: hand-cranked pencil hardness
This product is designed and manufactured according to
GB/T6739-1996. Coating the surface of its larger effect on the
hardness of the object to another, the performance of the
resistance, the ability to resist deformation of the film is
determined. Pencil numerals. Suitable for coating hardness testing.
Product Information
Specifications are as follows:
1 tester: To ensure that the weight of the weight of 1000 + /-50g
pencil perpendicular to act on the point of intersection with the
test bench, test bench so that the pencil with a 45 degree angle to
keep unchanged. Test bench can be moved, use a pencil to draw
scratches.
2 a group of Zhonghua advanced drawing pencil 6H-6B. Pencil
preparation; slashing Lead 3mm exposed wood, a circular motion on
the sandpaper, the tip of a pencil into the plane did not make
sharp edges.
Three tests must be at a temperature of 23 + / -2C, relative
humidity of 50 + / -5% RH.