Grinding is a surface treatment process that is performed after applying various coatings and is used to obtain precise finishes and exact dimensions on metallic or non-metallic parts. It is an abrasive machining operation in which small amounts of material are removed by the action of an abrasive wheel. The main goal of grinding is to achieve a smooth and uniform surface, with the desired roughness, eliminate irregularities and improve the dimensional accuracy of the parts.
Processes Details
The grinding process involves the use of a grinding machine or numerical control machine, which has an abrasive wheel mounted on a rotating shaft. The parts undergoing grinding are placed in a clamping device on the machine and subjected to abrasive action of the wheel. The operator carefully adjusts the process parameters, such as wheel rotation speed, part feed speed and cutting depth, to obtain the desired results. This process can be done in both inside and outside diameters, as well as on flat surfaces. In our specialization, we focus on grinding coatings such as Hard Chrome, ceramics, carbides, copper and hard alloys projected by both plasma spray and HVOF coatings.
During grinding, the grinding wheel rotates and moves along the surface of the piece, removing material in small quantities with each cycle. It is a precision process that requires skill and experience to obtain the required finishes and avoid damaging the parts. Abrasive grinding wheels come in different shapes and compositions, adapted for different materials and specific finishes.