Abstract:

 Diamond and cubic boron nitride (CBN) grinding wheels were prepared according to dry grinding the titanium alloy. Comparative experiments of grinding were conducted between the vitrified bond SiC and brazed bond super-abrasive grinding wheels on dry grinding Ti6Al4V. Surface status and morphology of the work-piece were measured by means of scanning electron microscopy, three-dimensional digital microscope, profilograph and microhardness tester. The influences of three types of grinding wheels parameters on surface roughness, microstructures and properties of grinding the hardened layer of Ti6Al4V were studied. The results showed an increase of grinding surface roughness with the increase of grinding depth and depress of belt speed under the dry grinding conditions. The surface roughness and deform layer of ground work-piece with super-abrasive wheels were smaller than SiC wheels, which showed that the surperabrasive wheels were suitable for the dry grinding processes of the Ti6Al4V alloy.

Key words: surperabrasive wheel, dry grinding, Ti6Al4V alloy, surface intergrity