TN4468 Pencil Coating Hardness Tester
The surface of pencil coating which do act on another harder object, the resistance performance of coating is the
deformation esistance ability of coating.
Using a pencil mark to express.
It is suitable for coating hardness testing.
1.Tester:ensure that the weight of weigh 1000 + 50
2.Fix the pencil at 45°
3.Move the testing platform under specified speed so as to touch the refill
4.A set of zhonghua senior drawing pencil 6H - 6B
5.Pare off wooden pencil preparation: lead with 3 mm
6.Circle on the sandpaper, grinding pencil tip into plane and make the sharp edges
7.Testing must be in temperature 23±2℃, relative humidity 50±5%.
GB/T 6739-1996 etc
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