摘要:
A method of manufacturing a porous electrode wire for electric discharge machining, comprising passing a wire rod comprising a first metal containing copper through a plating bath of a second metal having a vaporizing temperature lower than that of the first metal to form on a surface of the wire rod an alloy layer having a hardness higher than those of the first and second metals and an elongation percentage lower than those thereof by a diffusion reaction of the first and second metals, forming a layer of a plating metal comprising the second metal on a surface of the alloy layer, and then drawing the resultant wire rod to form cracks in the alloy layer and the plating metal layer. This electrode wire has an improved working rate at least 15 % higher than that of a regular zinc-plated electrode wire, and such an improvement of the working rate is ascribed to an increase in the surface area of the electrode wire owing to a porous structure of the surface thereof which in turn increases a rate of cooling the electrode wire with a working fluid.
摘要:
The present disclosure relates to a waste wire recovery apparatus, which includes: a waste wire recovery unit recovering a waste wire discharged from a wire electric discharge machine while rotating; and a rotational actuator rotating the waste wire recovery unit. Since the waste wire recovery unit rotates when recovering a waste wire, the waste wire can be uniformly received in the waste wire recovery unit. Accordingly, the stack density of the waste wire received in the waste wire recovery unit is improved, so the amount of a waste wire that can be transported at one time on a vehicle, etc. can be increased. Accordingly, the economic efficiency of reusing a waste wire can be improved.
摘要:
The present invention relates to a porous electrode wire for use in electrical discharge machining and the method of manufacturing the same. The wire improves the machining speed at least 15% compared with a conventional zinc coated wire, which results from an increased cooling ability of the wire with a cooling liquid because of the increase in the surface area of the wire having porous surface morphology. Since the surface of the porous wire presents uniform profile of outer periphery rather than surface protrusions, it does not affect machining accuracy. Further, the porous nature of the wire is expected to improve flushability during the electrical discharge machining, providing spaces to eliminate particles of the machining. Therefore, in accordance with the method of the present invention, a zinc coated wire having improved performance of machining speed and flushability compared with a conventional coated wire can be provided without additional processes.