WO2007113906A1 - 放電加工装置及び放電加工方法 - Google Patents
放電加工装置及び放電加工方法 Download PDFInfo
- Publication number
- WO2007113906A1 WO2007113906A1 PCT/JP2006/307198 JP2006307198W WO2007113906A1 WO 2007113906 A1 WO2007113906 A1 WO 2007113906A1 JP 2006307198 W JP2006307198 W JP 2006307198W WO 2007113906 A1 WO2007113906 A1 WO 2007113906A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- machining
- fluid
- electric discharge
- workpiece
- discharge machining
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
- B23H1/10—Supply or regeneration of working media
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/36—Supply or regeneration of working media
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/422—Treatment of water, waste water, or sewage by ion-exchange using anionic exchangers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/425—Treatment of water, waste water, or sewage by ion-exchange using cation exchangers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/427—Treatment of water, waste water, or sewage by ion-exchange using mixed beds
Definitions
- the present invention relates to an electric discharge cache device for preventing metal corrosion caused when a workpiece is immersed in a machining fluid for a long time.
- H + (hydrogen ion) type cation exchange resin and OH- (hydroxy acid ion) ) Ion exchange water is obtained by using an ion exchange resin, which is a pure water resin mixed with a shaped ion exchange resin, and the ion exchange water is used to perform a force test.
- tap water as a processing liquid is exchanged for H + by contacting cations such as sodium ions (Na +) and calcium ions (Ca 2+ ) contained in tap water with H + type cation exchange resin.
- cations such as sodium ions (Na +) and calcium ions (Ca 2+ ) contained in tap water with H + type cation exchange resin.
- Chloride ions anions such as CD and sulfate ions (SO 2_ )
- the conductivity of these machining fluids suitable for electrical discharge machining from which impurities have been removed is generally 70 S / cm or less, and the pH is determined by the hydrogen ion concentration, but is exchanged with hydrogen carbonate ions (HCO-) or the like.
- the workpiece is sprayed on the workpiece while the machining fluid is sprayed on the workpiece, or the workpiece is immersed in the machining fluid, so that the workpiece and the electrode Since machining is performed by applying a pulse voltage between them and generating electric discharge, corrosion of the metal constituting the workpiece occurs when the workpiece is immersed in the machining fluid for a long time, and the workpiece is processed. It is known that the quality of goods will deteriorate.
- Patent Document 1 a method of preventing corrosion of a workpiece by sandwiching an insulator between the surface plate and the workpiece, applying a voltage during non-machining, using the surface plate as an anode and the workpiece as a cathode.
- Patent Document 2 a minute current voltage to the surface plate or work piece installed in the processing tank as a cathode, and using the surface plate or work piece and the secondary electrode placed through the working fluid as an anode, the work piece is applied.
- Patent Document 2 Proposed ways to prevent corrosion!
- Patent Document 3 a technology to prevent metal corrosion by passing water through ion-exchanged resin and controlling the pH of the water has been proposed separately.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2004-291206
- Patent Document 2 JP-A-5-220618
- Patent Document 3 Japanese Patent Laid-Open No. 1-164489
- the anticorrosion is a power that increases the effectiveness of the work if the work is immersed in the working fluid for a short time. Is concerned about the corrosion of the workpiece.
- Patent Document 3 even if the pH is controlled, the EDM device needs to fix the workpiece on the surface plate, so that the surface plate and the workpiece are made of different materials. There is a problem when potential difference occurs, especially when the workpiece has a higher ionization tendency than the surface plate material, and corrosion occurs on the workpiece side.
- the present invention has been made to solve the above-described problems, and an object thereof is to obtain an electric discharge machining apparatus capable of preventing corrosion of a workpiece during machining and non-machining.
- An electric discharge apparatus uses a machining liquid having a pH of 8.5 to 10.5, applies a voltage using a platen and a workpiece as a cathode, and an anticorrosion electrode in a machining tank as an anode. To prevent electric corrosion.
- the invention's effect uses a machining liquid having a pH of 8.5 to 10.5, applies a voltage using a platen and a workpiece as a cathode, and an anticorrosion electrode in a machining tank as an anode.
- FIG. 1 is a configuration diagram of a wire electric discharge machining apparatus according to a first embodiment.
- FIG. 2 is a top view of the processing tank as viewed from above.
- FIG. 3 is a graph showing the relationship between the conductivity of an aqueous NaOH solution and pH.
- FIG. 4 is a flowchart showing a control operation in the first embodiment.
- FIG. 5 is a configuration diagram of a wire electric discharge machining apparatus in a second embodiment.
- FIG. 1 is a configuration diagram of a wire electric discharge machining apparatus based on the present embodiment.
- the wire discharge carriage device applies a voltage between the workpiece 1 and the wire electrode 2 in the machining tank 8 to cause the machining fluid ejected from the upper machining fluid nozzle 4 and the lower machining fluid nozzle 5 to flow.
- the work is carried out by discharging the workpiece 1 and melting and removing the workpiece 1.
- the discharge portion of the wire electrode 2 also melts and deteriorates in accordance with the discharge cache. Therefore, the wire electrode 2 wound around the wire bobbin 3 is supplied to the processing portion as the processing proceeds. However, it continues to be sent to the collection box 7 via the upper machining fluid nozzle 4, the lower machining fluid nozzle 5, and the collection roller 6 and collected.
- the machining fluid ejected from the upper machining fluid nozzle 4 and the lower machining fluid nozzle 5 flows a sludge generated in the heating portion, and then enters a state containing a large amount of impurities and is temporarily stored in the machining tank 8. Subsequently, it is guided and stored in the septic tank 12 by a piping path.
- the processing liquid in the dirty liquid tank 12 is sent to the filtration filter 14 by the filtration pump 13, and impurities are filtered and stored in the clean liquid tank 15.
- the machining fluid in the clear liquid tank 15 is measured for conductivity by a conductivity meter 22 as a machining fluid quality meter, and the control unit 23 compares the measurement result of the conductivity meter 22 with a preset set value. Then, by opening and closing the solenoid valve 20 for pure water and oil or the solenoid valve 21 for anti-corrosion resin, the pump 19 is used to pass water to the purified water tower 17 or the anti-corrosion tower 18.
- the processing fluid that has passed through the purified water sanitizing tower 17 and the anti-corrosion sanitizing tower 18 is returned to the clean liquid tank 15, and the upper processing liquid nozzle 4 and the lower processing liquid nozzle 5 are connected to the processing liquid pump 16. It is ejected between the workpiece 1 and the wire electrode 2 via
- the anticorrosion electrode 25 made of a conductive material is disposed on the outer peripheral side surface of the surface plate 9 such as stainless steel through an insulator 24.
- the anticorrosion power supply 26 which is a direct current or deflected alternating current power supply, with the surface plate 9 as a cathode and the anticorrosion electrode 25 as an anode.
- the area of the anticorrosion electrode 25 is preferably wide because the electric resistance is small and the applied voltage can be kept low. However, if the area is too wide, the workability in the force tank 8 may be deteriorated and In this embodiment, the anticorrosion electrode 25 that surrounds the surface plate 9 and has the same surface area as the side surface of the surface plate is used. Used.
- the surface plate 9 is fixed to the power tank 8 through a mounting base 10 made of an insulator such as ceramics.
- the purified water resin tower 17 stores the purified water resin
- the anticorrosive resin tower 18 contains a mixed resin of Na + type cation exchange resin and OH- type anion exchange resin. It is stored.
- the relationship between conductivity and pH of NaOH aqueous solution is proportional as shown in Fig. 3.
- the pH of the cutting liquid is also controlled by controlling the conductivity of the machining liquid.
- the anti-corrosion resin does not need to be a mixture of a cation exchange resin and an anion exchange resin, and can be used in two ion exchange resin towers enclosed in separate ion exchange resin towers.
- K + form and Ca 2+ form can be considered as the fat, and at least one kind can be used, and at least one kind other than the OH- form can be used as the anion exchange resin.
- the anticorrosive resin solenoid valve 21 is activated to maintain the pH value so as not to impair the anticorrosion properties of the machining fluid.
- the processing liquid in the clear liquid tank 15 is sent to the anti-corrosion resin tower 18 via the piping path so that the conductivity (pH value) of the processing liquid is kept near the preset value above! (ST3).
- the conductivity of the machining fluid In order to maintain the machining fluid at pH 8.5 or less, the conductivity of the machining fluid needs to be 2.0 S / cm or less, which significantly reduces the life of the ion exchange resin and is not practical! Therefore, it is desirable that the lower limit of pH is 8.5. Also, if the pH rises, the conductivity of the machining fluid increases, the leakage current increases, and the insulation recovery time cannot be ensured, thereby reducing the discharge cache performance. Desirable to be 10.5.
- the conductivity meter 22 is used to operate the anticorrosive oil-absorbing solenoid valve 21 so as to have a preset pH of 9.0, thereby preventing the processing liquid in the clean liquid tank from being anticorrosive.
- electric discharge machining is performed while supplying the gap between the object 1 and the wire electrode 2.
- a voltage of 5 V between the surface plate 9 and the anticorrosion electrode 25 it was possible to prevent corrosion during long-time (over 100 hours) processing and non-processing.
- alkaline earth elements such as sodium hydroxide (NaOH) and hydroxylating power lucium (Ca (OH)) can be considered when using the chemical injection method.
- the electrolyzed water should be used. That is, at least one type of liquid chamber measuring device such as a conductivity meter, a pH meter, and an acid reduction electrometer is used in these three methods, and the pH is adjusted by a command from the control unit 23.
- Force Use of ion-exchange and anti-corrosion resin is suitable from the viewpoint of the controllability of conductivity that affects the processing performance and the controllability of pH that affects the anti-corrosion performance of the workpiece.
- the voltage applied to the anticorrosion power supply section has a different required voltage value depending on the pH of the machining fluid. Has been found by experiments of the present inventors.
- the force depends on the shape of the anti-corrosion electrode 25 and the surface plate 9, the opposing area, and the gap. Met.
- the anticorrosion can be performed with the applied voltage of 5 V as described above, and the structure of the anticorrosion power supply 26 can be simplified.
- the applied voltage is determined in consideration of the installation location of the anticorrosive electrode 25, the electrode area, the shape, the shape of the workpiece, etc.
- the force applied voltage is fixed to the surface plate 9 when the applied voltage is IV or less.
- the corrosion of work piece 1 cannot be prevented, and if it is 30V or more, hydrogen is generated on the surface of the work piece due to electrolysis of the working fluid, which degrades the processing performance, so the pH is 8.5 to 10.5.
- a voltage range of 1V to 20V is preferable as the range of applied voltage that can prevent corrosion of the workpiece during machining and non-machining for a long time (100 hours or more).
- the applied voltage of the anticorrosion power supply unit can be reduced by setting the pH of the working fluid to 8.5 to 10.5.
- the design range of the anticorrosion power supply unit is widened by arranging anticorrosion electrodes around the surface plate as in the present embodiment, and an electric discharge machine that is not affected by the anticorrosion power supply unit can be designed.
- the processing tank 8 has a function as an anticorrosion electrode.
- the processing tank 8 and the surface plate 9 are insulated via the mounting base 10, and since the processing liquid exists in the gap between them, the insulator 24 is not necessary and the electrode area is large. The electrical resistance decreases and the voltage / current can be further reduced.
- a wire electric discharge machining apparatus equipped with the above-described method for preventing corrosion of a workpiece by applying a voltage.
- the present invention is suitable for application to a wire electric discharge machining apparatus that performs machining while applying a voltage with an anticorrosion power source using an aqueous machining fluid.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006530823A JP4946441B2 (ja) | 2006-04-05 | 2006-04-05 | 放電加工装置及び放電加工方法 |
PCT/JP2006/307198 WO2007113906A1 (ja) | 2006-04-05 | 2006-04-05 | 放電加工装置及び放電加工方法 |
US11/660,698 US7795558B2 (en) | 2006-04-05 | 2006-04-05 | Electric discharge machine and electric discharge machining method |
DE112006000044T DE112006000044B4 (de) | 2006-04-05 | 2006-04-05 | Erodiermaschine und Erodierbearbeitungsverfahren |
CN2006800006586A CN101198429B (zh) | 2006-04-05 | 2006-04-05 | 放电加工装置及放电加工方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2006/307198 WO2007113906A1 (ja) | 2006-04-05 | 2006-04-05 | 放電加工装置及び放電加工方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007113906A1 true WO2007113906A1 (ja) | 2007-10-11 |
Family
ID=38563179
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/307198 WO2007113906A1 (ja) | 2006-04-05 | 2006-04-05 | 放電加工装置及び放電加工方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7795558B2 (ja) |
JP (1) | JP4946441B2 (ja) |
CN (1) | CN101198429B (ja) |
DE (1) | DE112006000044B4 (ja) |
WO (1) | WO2007113906A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010047135A1 (ja) * | 2008-10-24 | 2010-04-29 | 株式会社ソディック | 放電加工液供給装置における腐食防止剤回収方法 |
JP2010099809A (ja) * | 2008-10-27 | 2010-05-06 | Sodick Co Ltd | 放電加工方法および放電加工装置 |
JP2010105104A (ja) * | 2008-10-29 | 2010-05-13 | Sodick Co Ltd | 放電加工装置におけるワークの防食方法および放電加工装置 |
WO2011067818A1 (ja) * | 2009-12-04 | 2011-06-09 | 三菱電機株式会社 | 防食装置及び防食方法、並びにワイヤ放電加工装置 |
WO2011074043A1 (ja) * | 2009-12-18 | 2011-06-23 | 三菱電機株式会社 | 液質調整装置及び液質調整方法並びにワイヤ放電加工装置 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008047420A1 (fr) * | 2006-10-18 | 2008-04-24 | Mitsubishi Electric Corporation | Apppareil d'usinage par étincelage et procédé d'usinage par étincelage |
JP5088975B2 (ja) * | 2010-10-19 | 2012-12-05 | 株式会社ソディック | ワイヤ放電加工装置 |
WO2013005315A1 (ja) * | 2011-07-06 | 2013-01-10 | 三菱電機株式会社 | ワイヤ放電加工装置 |
JP2013132735A (ja) * | 2011-12-27 | 2013-07-08 | Fanuc Ltd | 不活性ガスを加工液に溶解させるワイヤ放電加工機及びワイヤ放電加工方法 |
JP5689499B2 (ja) * | 2013-05-17 | 2015-03-25 | ファナック株式会社 | 防錆機能を有するワイヤ放電加工機 |
CN106735645A (zh) * | 2017-03-17 | 2017-05-31 | 广东工业大学 | 一种放电切割绝缘材料的装置 |
CN109014463B (zh) * | 2018-08-21 | 2019-10-01 | 泰州文杰数控设备有限公司 | 一种多工位同步线切割机床 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0542414A (ja) * | 1991-08-08 | 1993-02-23 | Sodick Co Ltd | 放電加工機用水系加工液の制御装置 |
JPH05269624A (ja) * | 1992-03-25 | 1993-10-19 | Sodick Co Ltd | 放電加工用水性液の処理法 |
JPH1170414A (ja) * | 1997-08-27 | 1999-03-16 | Makino Milling Mach Co Ltd | ワイヤ放電加工機のワーク防錆方法および装置 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2009242B (en) | 1977-11-28 | 1982-05-06 | Inoue Japax Res | Electroerosion machining |
JPS58137524A (ja) * | 1982-02-08 | 1983-08-16 | Hitachi Seiko Ltd | 放電加工装置 |
JP2694145B2 (ja) * | 1987-02-03 | 1997-12-24 | 株式会社ソディック | 水系放電加工液循環共給装置 |
JPH089030B2 (ja) | 1987-12-21 | 1996-01-31 | 三菱電機株式会社 | イオン交換樹脂による水のpH制御方法 |
US5081333A (en) * | 1989-03-17 | 1992-01-14 | Mitsubishi Denki Kabushiki Kaisha | Electric discharge machining fluid with a fatty acid amide additive for rust inhibition |
JPH0475820A (ja) * | 1990-07-13 | 1992-03-10 | Fanuc Ltd | ワイヤカット放電加工機の水質制御装置 |
CH684632A5 (fr) * | 1991-02-18 | 1994-11-15 | Charmilles Technologies | Dispositif anti-corrosion dans une machine d'usinage par électro-érosion à fil-électrode. |
JP2705427B2 (ja) | 1992-02-07 | 1998-01-28 | 三菱電機株式会社 | 放電加工装置 |
DE4391902T1 (de) * | 1992-04-28 | 1994-06-09 | Sodick Co Ltd | Verfahren zur Ionenaustauschbehandlung bei der Herstellung und Wiedergewinnung von wässrigem ED-Bearbeitungsfluid |
US6110379A (en) * | 1996-03-11 | 2000-08-29 | Overton; James Michael | Method for treating water containing sulfate |
JP3797884B2 (ja) * | 2001-03-30 | 2006-07-19 | 独立行政法人科学技術振興機構 | 水中での鉄系金属の防食方法 |
US6693139B2 (en) * | 2001-09-06 | 2004-02-17 | United States Filter Corporation | Treated ion exchange resin and method for treatment thereof |
JP3708087B2 (ja) | 2003-03-28 | 2005-10-19 | ファナック株式会社 | 放電加工機 |
JP3779289B2 (ja) * | 2003-07-31 | 2006-05-24 | ファナック株式会社 | 放電加工用の加工液処理装置 |
US7737380B2 (en) * | 2005-05-23 | 2010-06-15 | Mitsubishi Electric Corporation | Electrical-discharge machining apparatus and method and apparatus for dielectric-fluid quality control |
-
2006
- 2006-04-05 US US11/660,698 patent/US7795558B2/en not_active Expired - Fee Related
- 2006-04-05 CN CN2006800006586A patent/CN101198429B/zh active Active
- 2006-04-05 WO PCT/JP2006/307198 patent/WO2007113906A1/ja active Application Filing
- 2006-04-05 JP JP2006530823A patent/JP4946441B2/ja active Active
- 2006-04-05 DE DE112006000044T patent/DE112006000044B4/de active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0542414A (ja) * | 1991-08-08 | 1993-02-23 | Sodick Co Ltd | 放電加工機用水系加工液の制御装置 |
JPH05269624A (ja) * | 1992-03-25 | 1993-10-19 | Sodick Co Ltd | 放電加工用水性液の処理法 |
JPH1170414A (ja) * | 1997-08-27 | 1999-03-16 | Makino Milling Mach Co Ltd | ワイヤ放電加工機のワーク防錆方法および装置 |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010047135A1 (ja) * | 2008-10-24 | 2010-04-29 | 株式会社ソディック | 放電加工液供給装置における腐食防止剤回収方法 |
JP2010099798A (ja) * | 2008-10-24 | 2010-05-06 | Sodick Co Ltd | 放電加工装置における腐食防止剤の回収方法 |
CN102196878A (zh) * | 2008-10-24 | 2011-09-21 | 株式会社沙迪克 | 放电加工液供给装置中的防腐剂回收方法 |
JP2010099809A (ja) * | 2008-10-27 | 2010-05-06 | Sodick Co Ltd | 放電加工方法および放電加工装置 |
JP2010105104A (ja) * | 2008-10-29 | 2010-05-13 | Sodick Co Ltd | 放電加工装置におけるワークの防食方法および放電加工装置 |
WO2011067818A1 (ja) * | 2009-12-04 | 2011-06-09 | 三菱電機株式会社 | 防食装置及び防食方法、並びにワイヤ放電加工装置 |
JP5106689B2 (ja) * | 2009-12-04 | 2012-12-26 | 三菱電機株式会社 | 防食装置及び防食方法、並びにワイヤ放電加工装置 |
US8753516B2 (en) | 2009-12-04 | 2014-06-17 | Mitsubishi Electric Corporation | Corrosion preventing apparatus, corrosion preventing method, and wire electric discharge machining apparatus |
WO2011074043A1 (ja) * | 2009-12-18 | 2011-06-23 | 三菱電機株式会社 | 液質調整装置及び液質調整方法並びにワイヤ放電加工装置 |
JP5025826B2 (ja) * | 2009-12-18 | 2012-09-12 | 三菱電機株式会社 | 液質調整装置及び液質調整方法並びにワイヤ放電加工装置 |
US9056361B2 (en) | 2009-12-18 | 2015-06-16 | Mitsubishi Electric Corporation | Liquid-quality adjusting apparatus, liquid-quality adjusting method, and wire electric discharge machining apparatus |
Also Published As
Publication number | Publication date |
---|---|
US7795558B2 (en) | 2010-09-14 |
JPWO2007113906A1 (ja) | 2009-08-13 |
DE112006000044B4 (de) | 2009-05-28 |
US20090057274A1 (en) | 2009-03-05 |
DE112006000044T5 (de) | 2008-07-24 |
CN101198429A (zh) | 2008-06-11 |
CN101198429B (zh) | 2010-08-18 |
JP4946441B2 (ja) | 2012-06-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2007113906A1 (ja) | 放電加工装置及び放電加工方法 | |
US7737380B2 (en) | Electrical-discharge machining apparatus and method and apparatus for dielectric-fluid quality control | |
EP3070465B1 (en) | Reforming-water-antirust-effect determination device and reforming-water-antirust-effect determination method | |
JP4926710B2 (ja) | 液質制御方法、液質制御装置、およびこれを用いた放電加工装置 | |
KR101039509B1 (ko) | 방전가공 장치 및 방전가공 방법 | |
US7147768B2 (en) | Electrochemical scale inhibition | |
US20130161293A1 (en) | Wire electric discharge machine dissolving intert gas in machining fluid and wire electric discharge machining method using the same | |
KR100891233B1 (ko) | 방전 가공 장치 및 방전 가공 방법 | |
JP5025826B2 (ja) | 液質調整装置及び液質調整方法並びにワイヤ放電加工装置 | |
CN101253016A (zh) | 放电加工装置及放电加工方法 | |
JP4789627B2 (ja) | 鋼構造物の電気防食方法 | |
WO2018100361A1 (en) | Electrochemical cell assembly and method for operation of the same | |
JP2011020185A (ja) | 放電加工機および放電加工方法 | |
JP3983104B2 (ja) | 鉛含有金属のライニング方法と鉛含有金属及び鉛給水管のライニング方法 | |
KR100550286B1 (ko) | 전기인가를 이용한 열연강판 부식방지 방법 | |
KR100804237B1 (ko) | 스캐일 발생이 적은 통전롤 | |
JPH04363595A (ja) | 熱交換器の防食装置 | |
JPH1180979A (ja) | 水道管路の防食装置 | |
KR20070069148A (ko) | 가공액 액질 제어장치와 그 방법, 및 방전 가공 장치 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref document number: 2006530823 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020077001128 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200680000658.6 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11660698 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1120060000446 Country of ref document: DE |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 06731146 Country of ref document: EP Kind code of ref document: A1 |
|
RET | De translation (de og part 6b) |
Ref document number: 112006000044 Country of ref document: DE Date of ref document: 20080724 Kind code of ref document: P |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8607 |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 06731146 Country of ref document: EP Kind code of ref document: A1 |