New QHQ-A pencil hardness tester small film coating detection instrument paint 1pc | Инструменты

New QHQ-A pencil hardness tester small film coating detection instrument paint 1pc | Инструменты

New QHQ-A pencil hardness tester small film coating hardness detection

instrument paint hardness tester 1pc

Picture showing:

Note:

The pencil hardness is the weight of pencil pressure on the measured object,

not the direct weight of the car and weight

Use:

    Coating hardness is the paint manufacturing, paint use (painted) industry to determine the

quality of the necessary indicators. Pencil scratch test commonly used test methods to test the

hardness of the coating. China has also promoted this test method in the development of

coatings and in industrial production. The instrument can be used in the laboratory, but also

apply to the construction site, and in any direction on the coating hardness identification.

Structure and working principle:

    Instrument for the mechanical, three-point contact with the measured surface (two for the

wheel, a point for the lead) Always ensure that the pencil and the measured surface angle

of 45 °, the level of force to promote the instrument movement, you can complete the test

process, the determination of coating Ability to resist deformation.

Requirements:

1. GB1279-79 "Preparation of paint film," the preparation of three pieces of test, usually a

smooth tinplate 120 * 50 * (O.2-0.3) mm, or the substrate and the size of the product otherwise

specified.

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

Instructions:

1. Place the instrument flat on the test piece (if the test piece is smaller than the instrument,

place the test piece in front of the instrument and place the gasket under the front of the

instrument in order to keep the instrument horizontal).

2. Use a razor blade to make the protruding part of the stylus pen about 2-5mm and grind it

on the sandpaper, then insert the pencil into the instrument so that the stylus pen can be

fixed and locked after being in contact with the test piece (Recommended: Select a plane

in the shape of a rectangle and fix it. After the test, rotate the two planes and then fix the

test. Then, rotate the two plane fixing test to use three circles on one surface.) When

removing the washer, remove the spacer.

3. With thumb and middle finger caught in the center of two wheels. Push the instrument

about 1-2cm backward to remove the instrument (do not apply any pressure when pushing

the instrument).

4.Judgment of hardness, to see whether the scratch scratch film. Proposed to do at least

three test strips above the location, take the average. Hardness of the series, the standard

pencil from soft to hard 6B 5B 4B 3B 2B HB H 2H 3H 4H 5H 6H (a total of 13).

Weight about: 2.6 kg

Note: If your area is a remote area, you will need to add a separate fee.
Notice : when the parcel arrived to your customs,please pay the tax and pick up the parcel,
we are not responsible for  any customs duty or import tax