![]() ![]() Due to large fluid delivery an extensive amount of mist is generated during grinding process. Emulsion-based cooling fluids are used in grinding for a variety of reasons such as improving surface finish, wheel life, flushing away chips, reducing workpiece thermal deformation. Rs, the environment has become one of the most important subject. ![]() A decrease of up to 60% of normal grinding forces has been achieved. Our investigations show the improvement on the surface roughness, considerable reduction of the normal grinding force, and thermal damage in case of using ultrasonic assisted dry grinding compared to conventional dry grinding for a soft material, 42CrMo4. The advantages of ultrasonic assisted grinding were proved mostly for the brittle material. ![]() To make a step forward to pure dry grinding and to eliminate the negative environmental impact of the cutting fluids, a new technique called ultrasonic assisted dry grinding has been used. ![]() Therefore, in conventional dry grinding, as there are no cutting fluids to transfer the heat from the contact zone, the temperature of workpiece surface and grinding wheel surface will be increased resulted to thermal damage and poor surface integrity, increasing of wheel wear and inefficient grinding compared to conventional grinding. A major part of the specific energy in grinding is changed to heat that makes harmful effect on surface quality. However, compared to other machining processes, conventional grinding has a low material removal rate and involves high specific energy. Dry machining is a solution for greener production and also is a favorable process from an economical point of view. In recent years, many cooling lubricants are classified as health hazards, while their end-of-life treatment poses numerous ecological threats. Cylindrical plunge grinding tests on silicon nitride workpieces indicated that in comparison to conventionally dressed wheels, smaller cutting forces and wheel wear are achieved by using EDM-dressed grinding wheels. High material removal rates were achieved. The dressing process is carried out using the grinding oil also as dielectric fluid. For evaluating this dressing process, a wire electrical discharge dressing unit was designed, manufactured, and integrated into a universal cylindrical grinding machine. Through the EDM process, the electrically conductive grinding bond is eroded, so that grain protrusion can be generated. This study aims to evaluate the use of a wire electrical discharge machining (EDM) principle for truing and dressing metal-bonded grinding wheels. On the other hand, the poor dressability of this type of bond limits its application. Metal-bonded diamond wheels, due to its strong grain retention and thermal conductivity properties, are generally used for grinding difficult-to-cut materials, such as high-performance ceramics. ![]()
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