Coating scratch test equipment for durability testing

Whats/App: +86 156 1874 6768

Web: standard-groups.com

Standards

(1) GB 4706.1-2005 Safety of household and similar electrical appliances – Part 1: General requirements, Clause 21.2

(2) GB 4943.1-2011 Information technology equipment – Safety – Part 1: General requirements, Clause 2.10.8.4

(3) IEC 60335-1:2004 Household and similar electrical appliances – Safety – Part 1: General requirements, Clause 21.2

(4) IEC 60950-1:2005 Information technology equipment – Safety – Part 1: General requirements, Clause 2.10.8.4

Parameters

Parameter	Specification
Power supply	220 V AC, 50 Hz
Test station	Single station
Control system	PLC control, 7-inch color touch screen, stepper motor drive
Stylus tip radius	R0.25 ± 0.02 mm
Stylus apex angle	40°
Scratch speed	20 ± 5 mm/s (presettable)
Scratch force	10 ± 0.5 N
Scratch spacing	0–50 mm (presettable)
Scratch angle	80–85° (fixture fixed)
Specimen tray	Rotatable by 90°, multiple mounting holes

Features

Standard-compliant stylus geometry with polished rounded tip.

Precise motion control using stepper motors and programmable parameters.

Stable load application to maintain constant 10 N test force.

90° rotatable specimen tray suitable for different sample sizes and orientations.

Flexible starting-point selection (center-based or arbitrary positioning).

Automatic cycle operation with return-to-origin function after completion.

Accessories

(1) Scratch stylus × 1

(2) Hex key set × 1

(3) Specimen pressure plates × 4

Test Procedures

1. Specimen installation

Center the specimen on the test platform.

For large samples, secure using clamping plates.

For thin samples (< 2 mm), place the flat side of the pressure plate directly on the specimen.

2. Parameter setting

Start point selection (choose one method):

Center mode: Scratches are symmetrical about the rotary center.

Arbitrary start point: Manually move the stylus to the desired position and confirm as the start point.

Vertical position setting:

Lower the stylus manually until it is lifted by the specimen surface.

Record this position and input it as the “downward position” in the control interface.

Motion parameters:

Preset vertical, horizontal, and forward speeds (horizontal speed: 20 ± 5 mm/s).

Set scratch length ensuring that after 90° rotation the scratches remain within the specimen and do not intersect.

Set scratch spacing (minimum 5 mm between lines and 5 mm from specimen edge).

Set number of scratches and select 90° rotation if required.

3. Test operation sequence

Press Return to Origin, then Start.

The stylus moves: Origin → selected start point → descends to test position → performs scratch → lifts → returns to start point → advances spacing → repeats cycle → stops automatically and returns to origin.

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