The Impact of Material Rubbing on Belt Longevity
Impingement damage is a common issue affecting conveyor belts in various industries. This type of abrasion occurs when the material being transported rubs against the belt cover, leading to wear and tear. The wear is generally even, influenced by the constant pressure of the material against the belt's surface. The actual rate of abrasion is determined by several factors, including the nature of the material, the density of material loading, and the speed of the belt.
To assess impingement damage, manufacturers use specific testing methods. The ISO 4649 Types A and B Abrasion Test Methodology (formerly DIN 53516) is one such method. This test involves holding a sample of the rubber cover against a rotating abrasive drum for a fixed period, and then weighing the sample before and after to calculate volume loss. A lower number indicates less material lost and, therefore, higher abrasion resistance.
While these tests provide valuable data, it’s important to remember that they should not be considered precise predictors of actual field performance. Understanding impingement damage and its contributing factors can help in selecting the right belt cover materials and maintenance practices to extend the lifespan of conveyor belts.