Plastic Sliding Friction and Wear Tester

Features of the sliding friction and wear testing machine: This machine adopts a high-precision torque sensor, an embedded central processing unit (CPU) control system, and supports XP, Win7, Win8, and Win10 operating systems. The software can display torque-time curves and friction coefficient-time curves in real-time, plot changes in friction force, friction coefficient, wear amount, and other curves. It allows setting the number of tests, displays the current test count, and offers functions such as setting time and displaying the current test time.
This machine features one-time setup, fully automatic operation, automatic shutdown after the test, and detection of wear level.
Equipped with a color printer, it can print detailed test reports including curves, tabular data, and the name of the testing unit. Additionally, the instrument includes an automatic fault alarm system that simultaneously alerts via software to protect the instrument from component damage at the first sign of a problem. It is an essential testing device for research institutions, universities, and corporate laboratories.
Main applications: Suitable for testing the sliding friction and wear performance of plastic products, rubber products, or other composite materials. It can also measure the friction force, friction coefficient, and wear amount of samples during tests.
Manufacturing standard: GB3960 Plastic Sliding Friction and Wear Test Method
Main technical specifications: Sample size: 30mm*7mm*6mm±0.1 mm
Rotation speed: 0-200 rpm, continuously adjustable up to 500 rpm
Load: 196N ± 0.2% (expandable to 392N)
Friction ring dimensions: Ø40×10mm, chamfer 0.5×45°, concentricity deviation between outer and inner circles less than 0.01
Friction torque: 0--4N·m ±0.5%
Counter: 0-9999 hours
Weight set: One 4KG weight and four 1KG weights, enabling weight stacking functionality.
Accuracy: Speed accuracy: 1%; Load accuracy: 0.5%; Friction torque accuracy: 1%; Counter accuracy: 1S; Sensor measurement accuracy: 1% FS
Main configuration: One test main unit / One high-precision torque sensor / One set of computer control system / One computer
Standard friction ring: One piece; 4Kg weight: One piece; 1Kg weights: Four pieces
Complies with standard: GB/T 3960-1983 Plastic Sliding Friction and Wear Test Method
Sample requirements: The sample surface should be flat, free from bubbles, cracks, delamination, obvious impurities, and processing damage. Each group should have at least three samples. 3 Test equipment
Transmission system: Used to drive the ring to rotate at a given speed, accuracy within %, and the radial runout of the shaft at the ring installation point should be less than 0.1 mm.
Loading system: Applies normal force to the sample and measuring ring, accuracy within 5%.
Friction torque measurement and recording system, accuracy within 5%.
Counter or timer for recording the number of ring rotations, accuracy within 1%.
Includes matching washers 4GB48-76 and countersunk screws M3×0.35, length 10 mm. Ensure no axial movement after sample installation.
Note: This standard recommends using the M-00 type wear testing machine.
Others:
The material of the ring in this test greatly affects the wear test results of plastics. Therefore, the ring used in this standard has specific dimensions.
Includes matching washers 4GB48-76 and countersunk screws M3×0.35, length 10 mm. Ensure no axial movement after sample installation.
Note: This standard recommends using the M-00 type wear testing machine.
Others:
The material of the ring in this test greatly affects the wear test results of plastics. Therefore, the ring used in this standard has specific dimensions.
Material: No. 45 steel, the ring must be through-hardened, heat treatment HRC40~45, outer surface finish V8, chamfers 0.5×45, concentricity deviation between outer and inner circles less than 0.01.
x disk 9:
The ring can be reused. After each test, it needs to be reground. It can no longer be used when the outer diameter is less than 36 mm. For arbitration tests, a ring with an outer diameter of 40 mm must be used.
Note; The material of the ring can be selected according to product standards. 4 Condition adjustment
Condition adjustment is performed according to GB2918-82 "Standard Environment for Conditioning and Testing of Plastic Samples", temperature 23±5°C, humidity 0±10%. 5 Test conditions
During the test, the upper shaft remains stationary, the lower shaft rotates at 200 rpm, performing sliding friction for 2 hours, load 20 kg. Other loads can be selected based on the material. Test environment temperature 2 =5°C. ● Test steps
s.1 The ring should be cleaned of oil and stored in a dry container to prevent rust.
After conditioning, weigh the sample using an analytical balance with a sensitivity of 0.1 mg (m;).
Install the sample into the fixture, align the friction surface with a square so that its intersection with the ring is at the center of the sample. Install the friction torque recording paper, start the machine, and calibrate zero.
Again, carefully clean the sample and ring of oil using solvents like ethanol or acetone that do not react with plastics. After this, do not touch the surfaces of the sample and ring with hands.
Smoothly apply the load to the selected value.
After 2 hours of testing, stop the machine, remove the load, take out the sample and ring, clean the sample surface, and measure the wear scar width with a tool having an accuracy of at least 0.02 mm, or weigh the sample (m;) after storing it in the test environment for 1 hour.
Read the friction torque value. Result calculation: When two objects have sliding or a tendency for relative sliding on their contact surfaces, sliding friction occurs. Today, we will introduce the factors affecting sliding friction.
When the two mating friction pairs are of the same metal or very similar metals, or metals that can form solid solution alloys, the friction is more severe. For example, the friction coefficient of a copper-copper pair can exceed 1.0, and that of an aluminum-iron pair is greater than 0.8. In contrast, pairs of different metals or metals with low affinity have lower friction coefficients, such as iron-silver with a friction coefficient of about 0.3.
Metals with very rough surfaces exhibit high friction coefficients because one surface must overcome the peaks of the other during sliding. However, metals with very smooth surfaces have even higher friction coefficients due to increased actual contact area and stronger molecular interactions between surfaces.
When the sliding speed does not cause changes in the surface layer properties of the material, the friction coefficient is almost independent of the sliding speed. However, under normal conditions, sliding speed causes a series of changes in the material surface layer, such as heating, deformation, chemical changes, etc., thereby affecting the friction coefficient.
Metal surfaces are often covered with oxide films, adsorbed gas films, and other forms of contamination films. Surface deformation and temperature rise during friction promote the formation of surface films. The presence of these surface films affects the friction properties of the pair and can change the friction coefficient.
Suitable for the packaging industry, film manufacturers, inspection agencies, etc., to measure the static and dynamic friction coefficients of plastic films, sheets, paper, and other materials during sliding. Through measurement, it effectively judges the slipperiness, openness, and uniformity of films, guiding production correctly. The product complies with GB10006 and ISO8295 standards. It uses advanced segmented linear calibration technology for real-time display and analysis; employs a high-speed, high-precision, highly integrated single-chip microcomputer system for intelligent control of various functional modules; core components and parts use imported or domestic high-quality products to ensure accuracy; features RS232 computer communication function, comes with control software for statistical analysis of test results, professional appearance design, digital display: simultaneously shows static and dynamic friction. In addition to this product, our company also offers introductions to heat distortion Vicat testers, halogen moisture analyzers, friction coefficient testers, surface defect detection and control, etc.