GRINDING OF INCONEL 718 ALLOY WITH AIR-OIL-WATER MIXTURE DELIVERED BY MQL TECHNIQUE

摘要

Grinding is considered a finishing process used to achieve high dimensional and geometrical tolerances, including superior surface finish. This is mainly possible due to the small abrasive grains with high hardness and low radial depth of cut. However, abrasive grains are usually made from ceramic that are united by abond (resin or vitrified), so conventional grinding wheels are poor conductor of heat. In addition, grinding of most metals requires high specific energy, with very few exceptions (such as some ferrous materials). Since, the specific energy is a measure of machining efficiency (ratio of machining power to material removal rate), grinding is often referred to as a low efficient machining process (MARINESCU et al., 2004).