MODERNER PPH-1000 Pencil Hardness Tester

Overview of PPH-1000G Pencil Hardness Tester

MODERNER PPH-1000 pencil Hardness Tester is designed and produced in strict accordance with the provisions of GB/T6739-1996 "Pencil Test Method for Paint Film Hardness", and is used to test the scratch resistance of the paint film surface. The pencil core pressure of PPH-1000 Pencil Hardness Tester is 1000g, and it is equipped with more than a dozen hardness pencils of 6B-6H.

PPH-1000G pencil Hardness Tester real shot

Structure and Principle

The PPH-1000 Pencil Scratch Tester adopts three-point contact with the surface to be tested (two points are rollers and one point is the pencil lead), the angle between the pencil and the tested surface is 45°, and the pressure applied by the main body on the pencil lead when the horizontal bubble is horizontal 1000±50 grams. The hardness of the paint film is determined by drawing a pencil of known hardness scale across the paint film.

experiment procedure

1. Prepare the substrate according to the provisions of GB/T9271 "Standard Test Panels for Paints and Varnishes".

2. Sharpen the pencil until the lead core is exposed by 5-6 mm (keep the lead cylindrical shape), and keep the pencil perpendicular to the sandpaper to grind the end face of the lead lead until the end face becomes a complete circle without broken or notched edges. Pencils are sharpened in this way before each use.

3. Unless otherwise agreed, measure at 23±2°C and 50±5% humidity.

4. Install the pencil according to the attached drawing, and push it at least 7mm at a speed of 0.5~1mm/s. The pencil hardness of the paint film is indicated by the marked hardness of the hardest pencil that does not cause scratches of 3mm or more on the paint film.

5. Measure twice in parallel. If the results of the second measurement are inconsistent (the difference exceeds 1 pencil hardness unit), the test should be repeated.

PPH-1000 pencil configuration

Each instrument is equipped with: 13 advanced drawing pencils (6H~6B).

Maintenance of PPH-1000 Pencil Hardness Tester

1. The PPH-1000 pencil Hardness Tester strives to rotate flexibly when used. After a period of use, oil must be injected into the rotating parts such as screw rods and bearings.  

2. After using the PPH-1000 Pencil Hardness Tester for a period of time, the set screws and nuts must be tightened to avoid loosening.

Hardness Tester x1, 13 advanced drawing pencils (6H~ 6B)

[Note] Because the manufacturer's packaging may be updated or upgraded, the detailed packaging list shall be subject to the latest standard configuration of the manufacturer.