THE INFLUENCE OF THE DIELECTRIC LIQUID TYPE ON THE SURFACE HARDNESS OF ELECTRICAL DISCHARGE-MACHINED STEEL 40KH (40Х)
Keywords:
electrical discharge machining, dielectric liquids, water, oil, oil in water emulsion, steel 40KH, hardnessAbstract
The surface characteristics formed by electrical discharge machining in different type of dielectric liquids is presented. Three different dielectric liquids (de-ionized water, hydrocarbon oil and oil/water emulsion) were used during the electrical discharge machining. The influence of the dielectric liquid type on the hardness and recast layer properties of the machined 40KH (40Х) steel is presented. The obtained results for different- type dielectric liquids are compared.
