The Paint Surface Scratch Resistance Tester is a specialized testing instrument used to evaluate the scratch resistance performance of coating materials. In modern industrial production, coating materials are widely applied in various fields such as automotive, furniture, and construction industries. Therefore, testing the scratch resistance performance of coating materials is of great importance.To meet this requirement, the Paint Surface Scratch Resistance Tester was developed and introduced as an effective solution for accurately evaluating the durability and protective performance of coated surfaces.
1. High-Precision Closed-Loop Force Feedback Control System
The ISO 1518 Paint Surface Scratch Resistance Tester is equipped with a high-precision closed-loop force feedback control system as its core configuration. It can monitor and dynamically adjust the pressure applied by the scratch stylus onto the coating surface in real time, ensuring constant contact pressure throughout the entire scratching process.
This design completely eliminates the influence of different operator habits and manual force application methods on test results, ensuring excellent data consistency and comparability.
2. High-Sensitivity and High-Precision Resistance Detection Circuit
The equipment is equipped with a highly sensitive and accurate electrical resistance detection circuit, which continuously monitors the resistance variation between the scratch stylus and the coating substrate.
When the tip of the stylus penetrates the coating and contacts the substrate, the resistance value changes significantly. The system can immediately capture this moment and automatically record the precise load value at the penetration point.
This design enables objective and accurate determination of the coating penetration point, with repeatability deviation controlled within ≤ ±1%, significantly improving the reliability of test results.
3. High-Durability Scratch Stylus
The scratch stylus is a critical component of the equipment. Its tip is specially treated through advanced processing technology, achieving a hardness of Rockwell HRC60+ and providing excellent wear resistance.
After a single test, the wear level is extremely low, eliminating the need for frequent replacement. One stylus can complete more than 2.000 effective tests, significantly reducing long-term operating costs and minimizing the frequency of consumable replacement.
4. Dual Safety Protection System
In terms of safety protection, the instrument integrates an electronic limit device and a physical emergency stop button to provide dual safety protection.
When the scratch stylus reaches the preset testing endpoint, the electronic limit system is automatically activated. The stylus immediately stops moving and smoothly returns to its initial position.
At the same time, the operator can press the emergency stop button at any time to interrupt the test, effectively preventing secondary scratching or damage to samples caused by incorrect operation or equipment abnormalities.
5. Multilingual Touchscreen Operation Interface and Data Traceability
The equipment supports a multilingual touchscreen operation interface, providing convenient and intuitive human-machine interaction with a low operating threshold.
During testing, the screen can display the force-displacement curve dynamically in real time, allowing operators to clearly observe the relationship between applied pressure changes and scratch distance.
All test data and process curves are automatically stored, ensuring complete traceability of the testing process and facilitating subsequent analysis and verification.
6. Durable Aluminum Alloy Structure Design
The instrument body is constructed with a high-quality aluminum alloy frame and treated through an anodizing process, providing a strong and durable structure.
This treatment not only gives the surface excellent corrosion resistance against common chemical substances in laboratory environments but also ensures structural stability and resistance to deformation during long-term and frequent use, maintaining testing accuracy over an extended service life.
1. Fully Automatic Testing Process
The fully automatic testing process is the core highlight of the equipment. After placing the sample correctly on the test platform, the user only needs to press the start button, and the instrument can automatically complete the entire testing procedure, including precise positioning and contact of the scratch stylus, constant-speed scratching, endpoint stopping, and data acquisition and recording.
The entire process requires no manual intervention, which not only simplifies operation procedures and reduces human errors but also significantly improves testing efficiency.
2. High-Precision Loading System
The loading system features outstanding accuracy. All weights are precisely manufactured using stainless steel materials, with the weight error of each individual weight strictly controlled within ≤0.1 g.
Users can freely combine weights according to different testing standards or actual requirements, enabling precise application of graded loads within the range of 100 g to 2000 g. This allows the instrument to meet the testing requirements of coatings with different thicknesses and hardness levels.
3. Scratch Stylus Design Close to Real Application Conditions
The scratch stylus is designed to closely simulate real-life usage conditions. Its tip adopts a geometric structure with a 90° cone angle and a 1 mm ball diameter, accurately simulating the scratching effects of hard objects such as fingernails, keys, and coins on painted surfaces.
Therefore, the test results are closer to actual service conditions, providing stronger practical value and reference significance for coating performance evaluation.
4. Adjustable Leveling System for Testing Accuracy
To ensure the accuracy of the testing reference, the bottom of the instrument body is equipped with adjustable leveling feet.
The four leveling points can be independently fine-tuned within a range of ±5°, allowing users to easily adjust the equipment to a perfectly horizontal state.
This ensures that the scratch stylus maintains vertical contact with the sample surface throughout the testing process, preventing force decomposition and result deviations caused by equipment inclination.
5. Powerful Data Processing Capability
Advanced data post-processing capability is another major advantage of the equipment.
The professional data analysis software can automatically process original test data, generate intuitive load-penetration rate curves, and automatically calculate key performance indicators.
It also supports one-click export of complete test reports containing curve graphs, data tables, and test conclusions in PDF or Excel formats, greatly facilitating data storage, sharing, and the preparation of formal quality inspection reports.
1. Electrical and Control System
Input Voltage:
220V/50Hz, compatible with standard laboratory power supply environments.
Control System:
The instrument adopts a PLC (Programmable Logic Controller) combined with a touchscreen operation system, ensuring precise control of testing parameters and complete recording of test data.
Operation Interface:
Equipped with a 7-inch color touchscreen, supporting Chinese and English language switching to simplify operation procedures.
2. Drive and Motion Parameters
Drive Method:
The instrument adopts a stepper motor drive system to achieve precise control of scratch speed and movement position.
Scratch Speed:
Adjustable from 0–25 mm/s, meeting the testing requirements of different materials.
Effective Stroke:
0–85 mm (other stroke lengths can be customized free of charge), accommodating various sample size requirements.
Number of Tests:
Presettable from 0–9999 cycles, supporting long-term repeated cycle testing.
3. Core Scratch Parameters
Scratch Load:
Standard configuration includes a load range of 10 N ± 0.5 N. Optional weights of 20 N or 30 N ± 0.5 N are available to cover testing scenarios under different pressure conditions.
Scratch Stylus:
Equipped with a standard R0.25 ± 0.02 mm spherical stylus (other specifications available as options), capable of simulating scratch effects caused by different sharp objects.
Scratch Spacing:
Adjustable from 0–50 mm, supporting parallel multi-line scratch testing.
Contact Limiting Angle:
18°, ensuring stable contact between the scratch stylus and the sample surface.
Contact Spherical Transition Size:
R6. optimizing the smoothness and stability of the scratching process.
4. Equipment Configuration and Safety Functions
Automatic Stop Function:
After completion of the scratch test, the contact electrode device automatically stops operation, preventing unnecessary idle running of the equipment or excessive damage to the sample.
Working Platform:
The platform can rotate 360°, facilitating sample fixation and multi-angle testing.
Applicable Sample Size:
Approximately 150 × 100 mm, suitable for conventional sample dimensions.
5. Physical Parameters
Overall Dimensions:
The compact structural design saves laboratory space while maintaining complete testing functionality.
Coating Industry
Used to test the scratch resistance performance of coatings such as paint and varnish, providing reliable data support for coating formulation optimization.
Automotive Manufacturing
Used to evaluate the damage resistance of automotive body coatings against scratches caused by objects such as keys, branches, and other external impacts during daily use.
Metal Processing Industry
Used to test the wear resistance and scratch resistance of metal surface coatings such as electrophoretic coatings.
Packaging Materials Industry
Used to verify the scratch resistance performance of coatings on materials such as coil coatings and can inks during transportation and actual use.
In summary, the Paint Surface Scratch Resistance Tester is a professional testing instrument featuring stable performance and wide applicability. Its accurate testing results and reliable operation provide strong technical support for the research and development, production, and quality control of coating materials.With continuous technological advancement and the expansion of application fields, the Paint Surface Scratch Resistance Tester will play an increasingly important role in the coating materials industry in the future.We sincerely welcome customers to leave inquiries or contact us directly. We will provide more detailed product information and technical materials.
