Scratch Resistance Testing Instrument

The Scratch Resistance Testing Instrument is a precision device designed to evaluate the scratch resistance of solid insulation components, printed circuit boards, and other accessible parts in household appliances and similar products. The instrument ensures that tested materials possess sufficient mechanical strength and surface durability to resist penetration or damage by sharp objects. It provides reproducible, quantitative, and reliable data for product development, quality control, and safety verification.

Application

The Scratch Resistance Testing Instrument is widely used for:

Scratch testing on solid insulation components of household appliances

Evaluation of printed circuit boards (PCBs) and accessible parts for mechanical durability

Testing enclosures and surfaces for resistance against sharp tools

Comparative assessment of material formulations and surface treatments

Specific testing product: Scratch Resistance Testing Instrument

Standards

The instrument complies with key international and national safety and mechanical standards:

GB 4943.1‑2011 – Information technology equipment – Safety, Part 1 (Clause 2.10.6.6: mechanical strength, drop, impact)

GB 4706.1‑2014 – Household and similar electrical appliances – Safety, Part 1 (Clause 21.2: mechanical strength, scratch resistance of enclosures)

IEC 60950‑1 – Information technology equipment – Safety, Part 1 (Clause 2.10.6.6: mechanical strength, drop, impact)

IEC 60335‑1 – Household and similar electrical appliances – Safety, Part 1 (Clause 21.2: mechanical strength, scratch resistance of enclosures)

Parameters

Features

Hardened Steel Needle: Conical tip with polished rounded radius ensures consistent, precise scratches.

Controlled Vertical Load: 10 N ±0.5 N ensures reproducible results; adjustable for different testing requirements.

High Precision Movement: Stepper motor drive allows smooth, accurate scratching across the sample surface.

PLC + Touchscreen Control: Provides intuitive operation, real-time monitoring, and programmable test cycles.

Adjustable Parameters: Scratch spacing, length, angle, and speed can be customized for various applications.

360° Rotating Worktable: Enables longitudinal and transverse scratch testing easily.

Reliable and Repeatable: Designed to ensure accurate evaluation of scratch resistance for safety-critical components.

Accessories

Hardened steel scratch needles (standard R0.25 mm, replaceable)

Additional force weights (optional for higher load testing)

Rotating worktable

Calibration and maintenance tools

PLC + touchscreen interface

Test Procedures

Sample Preparation:

Select representative components, such as solid insulation parts or PCBs.

Secure the sample firmly on the rotating worktable.

Setup:

Install the hardened steel scratch needle in the holder.

Set the vertical load to 10 N ±0.5 N (adjustable as required).

Adjust scratch speed, spacing, length, and angle using the touchscreen interface.

Testing Procedure:

Move the scratch needle perpendicular to the sample surface at the specified speed (20 mm/s ±5 mm/s).

Ensure scratches are spaced at least 5 mm apart and at least 5 mm from sample edges.

Use the rotating table to perform longitudinal and transverse scratches if needed.

Record test parameters and results via the PLC system.

Maintenance Information

Regularly inspect and clean the scratch needle tip to prevent wear and ensure accurate results.

Verify stepper motor operation and worktable rotation for smooth performance.

Calibrate load, angle, and spacing periodically for reproducibility.

Ensure PLC and touchscreen interface are functioning correctly.

FAQ

1. What is the core advantage of this product?

Provides accurate, reproducible scratch testing for solid insulation components and PCBs in household appliances.

2. Are the test results reliable?

Yes. The combination of PLC control, stepper motor precision, and adjustable loads ensures highly reproducible results.

3. Which international or industry standards does it comply with?

GB 4943.1‑2011. GB 4706.1‑2014. IEC 60950‑1. IEC 60335‑1.

4. Why is this product important?

It ensures safety-critical components have sufficient mechanical strength and surface durability to resist scratches, supporting regulatory compliance and quality control.

5. Which industries or applications is it suitable for?

Household appliance manufacturing, electronics assembly, PCB production, and testing of enclosures and solid insulation components.