What is abrasive wear & how it is measured
Abrasion is a process of wearing something away and can often be classified as two or three-body. Two-body involves particles embedded in one surface ploughing into the other while three-body involves freely rolling particles removing material from one surface throughout the process.
We use a genuine Taber Abrader to test a material or coatings’ability to resist abrasion. A flat specimen is mounted on to a turntable and is rotated at a known fixed speed resulting in wear tracks that can be profiled or evaluated for mass loss, or changes in appearance.
With a grit feed attachment we are also able to evaluate three body abrasion by introducing grit uniformily and continuously at a specific rate.
We can determine the best abrasive wear resistant material or coating for your specific condition.
Two Genuine taber abrasive wheels are lowered on to the surfaces at a specific pressure and as the specimen is rotated the wheels are driven in opposing directions forming wear (debris is removed by a vacuum). A circular pattern is formed on the sample which is designed to reveal the abrasion resistance at all angles.
The number of cycles to reach a specific condition can be determined or the wear pattern can be evaluated after a set number of cycles. Either way we have the facilities to carry out full evaluation after testing
There are various standard test methods that are used, the most common are:
- ASTM D 4060 Standard Test Method for Abrasion Resistance of Organic Coatings by the Taber Abraser
- BS ISO 9352 Plastics – Determination of Resistance to Wear by Abrasive Wheels.
The Taber abrader can be used to test to many more standards, a full list can be found at the Taber Industries website