Shot peening – This process has the purpose of increasing resistance to fatigue and corrosion of mechanical parts. Essentially it consists of submitting the most exposed areas of a mechanical part to a bombardment of steel or ceramic spheres of suitable diameter. The control of induced stresses, using X-Ray diffraction, optimises the process parameters and improves the performance considerably. 2 Effe Engineering uses also anthropomorphic robots and automatic plants with continual controlling for shot size and flow.
Super isotropic finishing – Besides being influenced by residual surface stresses, fatigue resistance is also influenced by roughness. Low roughness levels, combined with high residual traction values, have a negative influence on fatigue resistance. 2 Effe Engineering has developed a polishing method using diamond pastes that permits extremely low roughness (Ra<0.03 μm.) and, at the same time, creates high compression (>-900 MPa). The process is controlled by X-Ray diffraction and scanning electron microscopy that allows to value the polished surface morphology.
HVOF Thermal Spraying – Thermal Spraying is a technique that consists in coating metal parts with a more or less thick layer of another material such as chromium carbide or tungsten carbide, without changing the mechanical characteristics. The coating thus obtained offers elevated mechanical characteristics especially in terms of hardness (up to 1000-1500 Hv300 ) and wear resistance. In particular with the HVOF (High Velocity Oxygen Fuel) technique, thanks to the different principle that generates the metallization, it is possible to achieve excellent results in terms of low porosity, high adhesion and elevated thicknesses. With the plants of 2 Effe Engineering it is possible to treat a large range of components, differing in size, weight and shape. The components usually coated are those that operate in a corrosive and stressful environment, for example, turbine blades and shafts, valves and so on. With this technique, thanks to the possibility of obtaining variable thicknesses, it is also possible to restore worn parts by metallizing them to their nominal dimensions. It’s possible to determine the phase analysis of coatings using a powder diffraction system included in laboratories of 2EFFE ENGINEERING.