Surface ruggedness processing of cylindrical Cu-Zn wire with wet blasting

摘要

To reduce the machining cost and energy, the higher removal rate has been required on the wire cut electrical discharge machining (WEDM) method. Some experimental trials have been applied to improve the machining properties on the WEDM using the coated and/or the rugged wire materials. As the appropriate technology has not been established on the rugged wire machining method, the expected results have not been obtained yet. In this paper, we propose a new method of the wet blasting technology that was designed and made by ourselves. In this method the ZrO_2 abrasives were exhausted from the three nozzles with the compressed water jet on the feeding wire surface. The cylindrical Cu-Zn wire surface was deformed and the rugged shapes depended on the compressed air pressure, the abrasive size and shape, and the feeding speed of wire electrode material. The relation between the wet blasting condition and the formed ruggedness shape was discussed. In addition, the mechanical properties of the rugged wire were investigated by the tensile test.