The T110 Grid Scratch Tester uses relative motion between the scratching head and the material surface to evaluate the sensory grade of the scratch, the color difference between the scratched and unscratched areas, or the shedding of the sample surface coating after scratching and then tape application. It is a commonly used test instrument for evaluating the scratch resistance of material surfaces and coatings. The high repeatability of experimental data can help manufacturers effectively control production and verify product performance.

Compliant with the following standards:

PV 3952 Scratch Resistance Test for Plastic Interior Parts

GMW 14688 Method A Scratch Resistance Test

GMW 14688 Method B Scratch Resistance Test

Technical Parameters

Test Mode: Automatic

Test Speed: 10-200 mm/s

Stroke: 25/40/45 mm

Number of Scratches: Adjustable

Scraper Head Dimensions: Interchangeable

Weight: 65 kg

Scraper Head Lift: Pneumatic

Control Panel: Smart Touchscreen

Workstation: Single

Dimensions: 700 mm * 400 mm * 700 mm

Power Supply: 220 V / 50 Hz

How to operate

First, regarding the testing principle, the Cross-Scratch Tester is used to test a surface material's resistance to damage caused by scratching. Depending on the material's potential contact with fingernails or other hard objects during use, the instrument uses scratching tips of varying materials to apply a specified pressure to the sample surface in a specified direction, stroke, and speed. The relative motion between the scratching tip and the sample produces a unidirectional, non-reciprocating, linear scratching trajectory. This allows the material's scratch sensory grade to be assessed, including the color difference between the scratched and unscratched areas, or the minimum scratching force required to damage the sample surface.

Second, regarding operation, the test piece must be prepared according to relevant standards and placed on a sufficiently hard surface. Holding the cross-scratch tester handle, position the multi-edged blade perpendicular to the surface of the test piece. Scratch with even pressure and a balanced technique at the specified cutting speed. After completing a round of scratching, rotate the test piece 90° and repeat the scratching process over the remaining cuts to form a grid pattern. Then, use a soft-bristled brush to brush the two diagonal lines of the grid pattern. The test must be completed at multiple locations on the specimen to obtain accurate results. If the multi-blade cutter needs to be replaced, follow the instructions in the manual.

Finally, regarding quality assurance measures, the manufacturing and testing of the 100-grid cross scratch tester are backed by rigorous quality records and testing documentation to ensure product reliability. Furthermore, users can conduct a full on-site inspection of the product, ensuring that the product is fully qualified and packaged for shipment, ensuring optimal performance.

In addition, the 100-grid cross scratch tester features several technical specifications, such as adjustable reciprocating platform travel distance and speed, adjustable scratch finger travel distance, and selectable scratch test loads. These features enhance its testing flexibility and accuracy. The technical guide for the 100-grid cross scratch tester covers its testing principles, operation, and quality assurance measures, providing users with comprehensive technical support and assurance.

Precautions

When using the Bicester Scratch Tester, users should observe the following:

- Ensure the testing environment is clean and stable to prevent external factors from interfering with test results.

- Perform regular maintenance and calibration of the tester to ensure its accuracy and reliability.

- When performing standardized tests, ensure that all conditions (such as temperature and humidity) are consistent to avoid errors.

Verification Method:

-Overall Appearance: Inspect the instrument casing for damage or deformation, and check whether all components are securely connected, loose, or falling apart. For example, check whether the five scraping fingers of a five-finger scraper are securely installed and whether the transmission components of the motor drive mechanism are functioning properly.

-Scraper Head Inspection: Inspect the scraper head for a flat and smooth surface, and for wear, nicks, or deformation. For scraper heads made of different materials, such as ceramic or metal, ensure that they meet the corresponding standard requirements and are correctly installed.

-Loading Device Inspection: Check whether the loading device, such as the loading weight or pressure sensor, is functioning properly, whether the weight is accurate, and whether the pressure sensor readings are stable and reliable. Calibration can be performed by comparing with standard weights or using professional pressure calibration equipment.

-Moving Parts Inspection: Inspect the instrument's moving parts, such as guides, screws, and gears, for smooth operation and any signs of jamming or unusual noise. Ensure that the scraper head's movement accuracy and repeatability meet requirements. The condition of the moving parts can be assessed through manual operation and observation.