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.

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. In addition to its main function of adjusting roughness, grinding also allows for super-finishing and precision polishing, further improving the surface quality of the parts.

In the specific case of landing gear parts, the usual process involves the application of Shot Peening as a first step to improve fatigue resistance, followed by hard chrome or HVOF coating. Finally, the grinding of the layer is carried out, according to the type of coating used, to obtain the desired final characteristics.

Grinding is a widely used process in industry, especially for parts and components that require high dimensional precision and a fine finish. Common examples of grinding-treated parts include shafts, bushings and bearings for engines and machinery, cylindrical surfaces such as drive shafts and valve rods, flat surfaces such as base plates, turbine blades, and machine and engine housings, etc. internal surfaces of holes such as cylinders and caps, as well as landing gear parts. This abrasive machining process allows for high quality results, improving the precision and functionality of parts in a wide variety of industrial applications.

The grinding process is widely applied in various industrial sectors as it can achieve precise finishes and improve the quality of parts. It is often present in aeronautics, energy, and equipment goods, where high standards of quality and performance are sought.

This machining technique plays an essential role in modern manufacturing, ensuring the functionality and optimal performance of parts in these various industrial areas.

TTT Group holds the corresponding aeronautical certifications, which guarantees the application of these processes with the highest quality standards in aeronautical applications and in other sectors of the industry.