Experimental research of the surface layer quality and cutting forces in flat grinding of the BT6 titanium alloy

A set of mathematical models, finite-element models and empirical dependences is being developed. All of them require practical testing. The article presents the results of experimental research of the quality and characteristics of grinding specimens made of the BT6 titanium alloy widely used in aerospace industry.  Machining was conducted on a modern surface grinding machine, model 3D711VF11 by a ceramically bonded silicon carbide disk. The operation components of the cutting force, surface roughness (before and after machining of the specimens), as well as residual stresses were measured in the course of operation. All measurements were performed with the same specimens that were sequentially machined with the measurement of the earlier described parameters. In view of this, it is possible to trace all the transformations that take place inside the specimens. A force gage made jointly with the Department of Mechanical Engineering of SamGTU (Samara State Technical University) was used as a force-measuring system. The results of the research can be used to verify the adequacy of the mathematical models created and provide an insight into some processes occuring in surface grinding of flat titanium alloy blanks.