DIN wear testing machine is used to determine the wear resistance of rubber tires, rubber shoes, tape, etc., in order to identify the quality of rubber products. The quality index of rubber products is the main basis for evaluating the quality and performance of rubber products.

The wear testing machine fixes the test piece in the test piece seat of the testing machine, and increases a certain pressure on the test sole through the test piece seat to carry out friction forward movement on the rotating drum of the testing machine covered with wear-resistant sandpaper. After a certain distance, the weight wear of the test piece before and after the friction of the sole is measured. According to the specific gravity of the sole test piece and the correction coefficient of standard rubber, the relative volume wear of the sole test piece is calculated, and the wear resistance of the test piece is evaluated by the relative volume loss of the sole test piece.

DIN abrasion testing machine can easily identify the quality of rubber products

The hardness of rubber products indicates the ability of rubber to resist external pressure. The hardness value reflects the degree of softness and hardness of rubber and products. The hardness of rubber products has a certain relationship with its mechanical properties (such as wear, tensile strength), so the mechanical properties of rubber can be indirectly understood according to the hardness of rubber.

There are many methods to determine the hardness of rubber, China’s Shore hardness tester to measure the hardness of rubber, that is, 0.1MPq pressure will be 5mm diameter of the round steel ball into the rubber specimen 30s after measuring the depth of the steel ball into. It is calculated by the following formula:

DIN abrasion testing machine can easily identify the quality of rubber products

H= P/πdh

Where: H — Shore hardness value (MPq);

P — a load of 0.1MPq applied to the sample;

h — the depth of the steel ball pressed into the sample (cm);

d — Diameter of the steel ball (cm).

Three points are usually measured for each sample during measurement, and their average values are taken.