TNSPECTION TESTING

Inspection and testing

Friction and wear

Product Description

Wear refers to the phenomenon that the surface material is continuously lost or residual deformation occurs when the friction pair moves relative to each other. Surface material movement mainly includes mechanical movement, chemical action and thermal action. The ability to withstand the wear caused by the movement of surface materials is an inherent property of the material, and different materials have different coefficients of friction and wear resistance. Obviously, the friction and wear performance of the material itself will directly affect the friction performance and wear life of the friction pair (such as joint bearings).

Friction and wear test is to put the tested sample on the testing machine, and the standard grinding parts on the testing machine to a certain standard movement mode (specified load, speed, etc.) for friction test, after a period of time, the final assessment of the friction and wear performance indicators of the tested sample (such as wear, friction coefficient, temperature rise, etc.).

The method of friction and wear test is specified in relevant standards at home and abroad (such as ASTM standards), and its compliance requirements (limit requirements) can be judged according to the contract requirements of both supply and demand during inspection.

(1) The mechanical action causes material loss on the friction surface and the physical deformation of the friction surface;(2) The chemical action causes the friction surface to change its properties;(3) The thermal effect is the shape change of the friction surface.