Automatic Scratch Tester
Category：Scratch Tester
Introduction
The Automatic Scratch Tester is designed for evaluating the hardness and friction performance of coatings on a wide range of materials and products. It is suitable for electronics, household appliances, metal coatings, decorative materials, and synthetic leather, as well as mobile phone shells, MP3/MP4 shells, and laptop shells. The instrument measures coating hardness and resistance to friction, providing reliable data for quality control and material research.
Application
(1) Testing hardness and scratch resistance of coatings on electronics and digital device shells, including mobile phones, MP3/MP4 players, and laptops.
(2) Evaluating friction performance of household appliance surfaces.
(3) Testing wear and scratch resistance of metal coatings and decorative materials.
(4) Assessing durability of synthetic leather and similar materials under repeated friction.
(5) Quality control in coating, paint, and material manufacturing.
(6) Research and development of new coatings or surface treatment processes.
Standards
(1) ASTM D3363 – Standard Test Method for Film Hardness by Pencil Test.
(2) ASTM D6037 – Standard Test Method for Wet Abrasion Resistance of Organic Coatings.
(3) ISO 1518-1 – Paints and varnishes – Determination of scratch resistance – Part 1: Method using a scratching stylus.
(4) ISO 1518-4 – Paints and varnishes – Determination of scratch resistance – Part 4: Instrumented method.
(5) BS 3900:E2 – British Standard for scratch testing of coatings.
(6) BS EN 13523-12 – European standard for determination of scratch resistance of coatings.
Parameters
| Parameter | Specification |
|---|---|
| Working power supply | AC 220V, 50Hz |
| Test load | 50–1000 g |
| Friction stroke | 10–60 mm (adjustable) |
| Test speed | 5–60 times/min (knob adjustment, LCD display) |
| Friction counter | 0–9999 cycles, preset, power-off memory function |
| Load weights | 50g, 100g, 200g, 300g, 500g (two each) |
| Friction media | Cotton cloth, eraser, two Chinese 2B pencils |
| Alcohol/liquid friction tools | Two |
| Eraser friction tools | Two |
| Pencil friction tools | Two |
| Machine dimensions | 500 × 450 × 400 mm |
Features
(1) Adjustable test load from 50g to 1000g for precise force application.
(2) Adjustable reciprocating friction stroke from 10mm to 60mm.
(3) Variable test speed from 5 to 60 times/min with LCD display feedback.
(4) Digital friction counter (0–9999) with power-off memory function.
(5) Supplied calibrated load weights (50g, 100g, 200g, 300g, 500g, two of each).
(6) Equipped with friction media holders for cotton cloth, erasers, and Chinese 2B pencils.
(7) Reciprocating mechanism provides controlled back-and-forth motion of the friction medium.
(8) Compact design suitable for laboratory use.
(9) Facilitates objective assessment of coating durability and scratch resistance.
Accessories
(1) Set of calibrated load weights (50g, 100g, 200g, 300g, 500g, two each)
(2) Friction media holders for cotton cloth, erasers, and Chinese 2B pencils
(3) Alcohol/liquid friction tools
(4) Eraser friction tools
(5) Pencil friction tools
(6) Power supply cable and operation manual
Maintenance Information
(1) Keep the friction media and holders clean to avoid contamination.
(2) Regularly inspect the reciprocating mechanism for wear or misalignment.
(3) Calibrate the load and stroke parameters periodically for accuracy.
(4) Avoid exposure to moisture and corrosive substances.
(5) Ensure stable power supply and prevent electrical overload.
(6) Handle the instrument gently during installation or relocation to protect mechanical components.
FAQ
1. What is the primary purpose of this tester?
It measures the scratch resistance of coatings, paints, films, and surface finishes by automatically applying controlled force and movement to the test surface.
2. Which materials can be tested using this device?
The tester is suitable for painted surfaces, varnishes, plastics, glass, metal coatings, and other decorative or protective surface layers.
3. How does the tester operate?
It uses an automated stylus or indenter to scratch the material under precise load, speed, and path control, ensuring consistent and repeatable results.
4. Which standards does this tester comply with?
It supports international standards for scratch testing, including ASTM D7027. ISO 1518. ISO 4586. and other relevant industrial protocols.
5. Who typically uses this equipment?
Paint and coating manufacturers, quality control laboratories, and R&D teams use it to evaluate surface durability, optimize formulations, and ensure product performance.
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