Description

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New 3 In 1 Portable Pencil Hardness Tester Meter Durometer

500g 750g 1000g QHQ-A Pencil Hardness Tester

The hardness of coating film is the necessary index for the quality determination of coating manufacturing and coating coating. The pencil scratch method is the most widely used test method since 80s. China has also promoted the test method in the development of coatings and industrial production. The instrument is based on the national standard film hardness pencil methodGB6379-86No.2,3Designed and manufactured by hand. The instrument can be used in the laboratory, but also can be applied to the construction site, and can be in any direction on the hardness of the film identification.

Two. Structure and working principle

The instrument is mechanical, the three point contact surface two points for the wheel, a lead core always ensure that the pencil and the surface to be formed45The angle of the force, the force level to promote the movement of the instrument, the test process can be completed, the ability to determine the film resistance to deformation.
Three. Use requirements

1.GB1279-79General preparation of paint film preparation test three, generally smooth tin plate120 x 50 x O.2-0.3Mm,
Or other products of the base material and size.

2Test conditions: according to product standards or requirements of the construction conditions.
Four.Usage method

1,Place the instrument on the test piece if the test piece is smaller than that of the instrument, place the test piece in front of the instrument and place the gasket under the front end of the instrument.

2,A pencil with a blade, the protruding part is about the lead2-5mmAnd, in the sand down the pencil is inserted into the instrument, so that the lead and test pieces after contact and fixed lock recommended: pencil is hexagonal, choose a fixed plane,

After testing, rotate two planes and then fix the test, and then rotate the two plane fixed test, a circular surface can be used

three the gasket should be removed during the test.

3,With the thumb and middle finger caught in the center of the two wheels. Push the instrument about 1 from the rear-2cm can remove the instrument push the instrument without any pressure.

Try to see a piece of distinguishing hardness, no scratches. It is suggested that the sample should be done at least three positions, and the average value should be taken. Hardness series,Standard pencil from soft to hard 6B 5B 4B 3B 2B B HB H 2H 3H 4H 5H 6H co13 branch.

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