Corrosion preventing apparatus, corrosion preventing method, and wire electric discharge machining apparatus

• Main Authors: KAWARAI HISAKATSU, YUZAWA TAKASHI, OHATA TAMAYO, SATO TATSUSHI, KURIKI HIRONORI, TANIMURA JYUNJI
• Format: Patent
• Language: English
• Published: 17.06.2014
• Subjects: CHEMISTRY; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE; WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OFELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKESTHE PLACE OF A TOOL

A corrosion preventing apparatus including: a water purifying part that includes a hydrogen-ion form resin and a hydroxy-ion form resin; an anticorrosive part that includes a cation form resin and an anion form resin having anticorrosive ions supported thereon; a conductivity measuring part that measures a measured value of conductivity of a machining liquid; and a control part that controls a flow of the machining liquid to the water purifying part and the anticorrosive part on the basis of the conductivity measuring part; wherein the control part performs control on the basis of predetermined first and second conductivities and the measured value measured by the conductivity measuring part.