Scratch Resistance Tester (GB 4943.1)
The Scratch Resistance Tester (GB 4943.1) is designed for evaluating the scratch resistance of solid insulation components or printed circuit boards in household appliances and similar products. Developed according to GB4943.1-2011 (clause 2.10.8.4), IEC60950-1 (clause 2.10.8.4), GB4706.1 (clause 21.2), and IEC60335-1 (clause 21.2), this tester ensures materials have sufficient strength to resist penetration by sharp tools. The instrument provides precise, repeatable scratch tests, making it ideal for product safety verification and quality control.
Application
Primary applications:
Scratch resistance testing of easily accessible solid insulation parts in household appliances
Evaluation of printed circuit boards for durability against sharp objects
Safety verification to ensure materials meet mechanical strength requirements
Typical tested products:
Household appliances (kitchen, cleaning, and personal devices)
IT equipment and peripherals
Electrical devices with exposed surfaces or touchable insulation components
Standards
(1) GB 4943.1 – Information Technology Equipment – Safety – Part 1: General Requirements (Clause 2.10.6.6)
(2) GB 4706.1 – Household and Similar Electrical Appliances – Safety – Part 1: General Requirements (Clause 21.2)
(3) IEC 60950-1 – Information Technology Equipment – Safety – Part 1: General Requirements (Clause 2.10.6.6)
(4) IEC 60335-1 – Household and Similar Electrical Appliances – Safety – Part 1: General Requirements (Clause 21.2)
Parameters
| Parameter | Specification |
|---|---|
| Input Voltage | AC 220V / 50Hz |
| Control System | PLC + Touchscreen |
| Drive Type | Stepper motor |
| Scratch Speed | 0–25 mm/s (adjustable) |
| Test Cycles | 0–9999 (presettable) |
| Scratch Spacing | Adjustable, 1–19 mm |
| Worktable | 360° rotatable |
| Scratch Load | 10 N ±0.5 N |
| Stylus | Hardened steel, conical tip, 40° cone angle, radius 0.25 mm ±0.02 mm (replaceable) |
| Scratch Angle | Vertical to sample surface, 80°–85° (adjustable) |
| Scratch Length | Max 200 mm (adjustable) |
| Translation Distance | Max 200 mm (adjustable) |
Features
Uses hardened steel conical stylus with polished tip (R0.25 mm ±0.02 mm) for precise scratch application.
Scratch tests performed at 20 mm/s ±5 mm/s in planes perpendicular to the conductor edge.
Stylus applies consistent load of 10 N ±0.5 N along its axis.
Scratch spacing ≥5 mm between lines and ≥5 mm from sample edges to ensure uniform results.
PLC + touchscreen control system for stable operation and easy parameter setup.
Rotatable worktable enables scratch testing in both longitudinal and transverse directions.
Adjustable speed, angle, length, and spacing allow compliance with multiple standard requirements.
Accessories
(1) Hardened steel stylus (conical tip, replaceable)
(2) Calibration weights and load adjustment kit
(3) Sample mounting clamps and rotating table
FAQ
1. What is the core advantage of this product?
It ensures accurate, repeatable scratch tests for accessible insulation components, meeting multiple international safety standards.
2. Are the test results reliable?
Yes. The combination of hardened stylus, controlled load, and precise PLC operation ensures consistent and reproducible results.
3. Which international/industry standards does it comply with?
GB 4943.1. GB 4706.1. IEC 60950-1. IEC 60335-1.
4. Why is this product important?
It verifies the mechanical strength and safety of exposed or touchable parts in appliances and IT equipment, preventing hazards from sharp object penetration.
5. Which fields is this product suitable for?
Household appliance manufacturers
IT equipment production and quality control
Electrical device safety testing laboratories
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