WO2011152327A1 - 放電加工用電極線 - Google Patents
放電加工用電極線 Download PDFInfo
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- WO2011152327A1 WO2011152327A1 PCT/JP2011/062302 JP2011062302W WO2011152327A1 WO 2011152327 A1 WO2011152327 A1 WO 2011152327A1 JP 2011062302 W JP2011062302 W JP 2011062302W WO 2011152327 A1 WO2011152327 A1 WO 2011152327A1
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- WIPO (PCT)
- Prior art keywords
- electrode wire
- wire
- discharge machining
- tensile strength
- electric discharge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/023—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material only coatings of metal elements only
- C23C28/025—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material only coatings of metal elements only with at least one zinc-based layer
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- 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
- B23H1/04—Electrodes specially adapted therefor or their manufacture
- B23H1/06—Electrode material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of rods or wire
- B21C37/042—Manufacture of coated wire or rods
-
- 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
- B23H7/02—Wire-cutting
- B23H7/08—Wire electrodes
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/021—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material including at least one metal alloy layer
Definitions
- the present invention relates to an electrode wire for electric discharge machining.
- the high-strength high-strength high-carbon steel wire is essential for the electrode wire for small-diameter electric discharge machining with a wire diameter of 0.1 mm or less, and an alloy of Cu and Zn that improves electric discharge workability on the outer periphery of the core wire.
- a covering layer or a two-layer structure of Cu as the first layer and Zn as the second layer has been commercialized and distributed.
- Japanese Patent Laid-Open No. 03-111126 discloses a metal wire such as a hard steel wire, a stainless steel wire, or a brass wire.
- a metal wire such as a hard steel wire, a stainless steel wire, or a brass wire.
- a coating layer having a two-layer structure having a total coating layer thickness of 0.2 to 20 ⁇ m is formed.
- graphite particles having an average particle diameter of 10 ⁇ m or less over one or both of the coating layers, copper is melted by heat from electric discharge machining, and is stable without being fused to the workpiece.
- An electrode wire for electric discharge machining is described in which electric discharge is obtained and the machining speed can be improved.
- Patent Document 1 has a problem that it is necessary to disperse graphite particles in the coating, and the manufacturing process is complicated and the manufacturing cost is high.
- Patent Document 2 Japanese Patent Application Laid-Open No. 09-103922 is made of stainless steel having a tensile strength of 200 to 300 Kgf / mm 2 , a wire diameter of 0.05 to 0.20 mm, and a conductivity of 1 By being ⁇ 3%, the machining accuracy and surface roughness of the workpiece can be dramatically improved, the surface polishing process after electric discharge machining is not required, and the manufacturing cost of the electrode wire and the maintenance of the electric discharge machine are maintained. An electrode wire for wire electric discharge machining that can reduce the management cost is described.
- Patent Document 2 uses a stainless steel wire that is not coated, there is a problem in that electric discharge machining performance is not sufficient.
- the present invention solves the problems of the prior art as described above, can suppress the decrease in tensile strength even when the discharge energy is increased, can improve the cutting accuracy of the workpiece, and improve the processing speed. It is an object of the present invention to provide an electrode wire for electric discharge machining that can be made to occur.
- the present invention has been made as a result of intensive studies in order to solve the above-described problems, and the gist of the present invention is the following contents as described in the claims.
- An electrode wire for electric discharge machining characterized by being 2 or more.
- the electrode wire has a tensile strength at normal temperature of 1900 to 3200 N / mm 2 , and the tensile strength of the electrode wire at 400 ° C. is 70% or more of the tensile strength at normal temperature.
- FIG. 1 is a cross-sectional view illustrating an electrode wire for electric discharge machining according to the present invention.
- the electrode wire for electric discharge machining according to the present invention has a stainless steel wire as a core wire 1, the outer periphery of the core wire 1 is coated with nickel (Ni) 2, and then copper (Cu) 3 and It is an electrode wire coated with zinc (Zn) 4 in sequence, and has a tensile strength of 1900 N / mm 2 or more.
- the core wire by making the core wire a stainless steel wire having excellent heat resistance, high tension can be obtained even when the discharge energy is increased, and the processing speed can be improved.
- the type of stainless steel is not limited, but stainless steel such as SUS304 and high nitrogen stainless steel that can be increased in strength is preferable from the viewpoint of versatility.
- the electrode wire for electric discharge machining of the present invention is excellent in heat resistance even when the electrode wire temperature rises, the electrode wire feed rate can be lowered to reduce the consumption of the electrode wire.
- the conventional concept of small-diameter EDM electrode wires for precision machining is to apply a high-strength core wire to maintain high strength, and to improve the EDM on the outer layer of Cu and Zn alloy
- a coating layer such as a coating layer or a two-layer structure of Cu as the first layer and Zn as the second layer was provided. That is, it is made by combining two functions of increasing the strength with the core wire and improving the electrical discharge processability with the outer layer coating.
- the core wire not only increases the strength, but also has two functions of increasing strength and heat resistance, and then has higher thermal diffusibility than the core material and linear expansion. Strain is suppressed by covering nickel (Ni), which is a low-rate material, diffusing heat generated by discharge and reducing expansion.
- Ni nickel
- the outermost layer was coated with copper (Cu) and zinc (Zn), which are materials for improving electric discharge machinability.
- the electric discharge machining electrode wire of the present invention is an electric discharge machining electrode wire having a strength maintaining function, a heat resistance function, a distortion suppressing function, and an electric discharge machining improving function.
- the thickness of the nickel (Ni) is preferably 0.01 to 2.0 ⁇ m.
- the electrode wire preferably has a tensile strength at normal temperature of 1900 to 3200 N / mm 2 , and the tensile strength at 400 ° C. of the electrode wire is preferably 70% or more of the tensile strength at normal temperature.
- the outer diameter of the electrode wire after drawing is preferably 0.03 mm to 0.1 mm in accordance with the model of the electric discharge machine to be applied.
- the copper (Cu) and zinc (Zn) coatings may be independent layers, but the adhesion can be improved by heat treatment and alloying as shown in FIG.
- the results of carrying out the present invention under the following conditions are shown in Table 1.
- the basic manufacturing process of the present embodiment is to use a stainless steel wire or a high carbon steel wire as a core material, and apply a strong process to finish the product wire diameter on the one provided with the necessary functions. It has been subjected to straight heat treatment.
- the examples in the table below were evaluated by finishing with a wire diameter of 0.05 mm.
- Inventive Examples 1 to 8 use SUS304 stainless steel wire (stainless steel A) or stainless steel (stainless steel B) to which nitrogen is added as the core wire, and coat Ni, then Cu, and then Zn, In some cases, they were heat-treated by alloying, and each of them was subjected to strong processing at different degrees of processing to produce ones having different tensile strengths.
- the thickness of Ni at the time of evaluation was 0.01 to 0.2 ⁇ m, and the thickness of the alloyed Cu and Zn was 5 ⁇ m.
- Inventive Examples 1 to 10 have a tensile strength at 400 ° C. of 70% or more compared with the tensile strength at room temperature of 100, and the processing speed is improved by 10% or more compared to Comparative Example 4 which is a conventional material. Confirmed to do.
- Comparative Examples 1 to 4 and Invention Examples 1 to 4 were subjected to a diffusion treatment, and Comparative Examples 5 to 8 and Invention Examples 5 to 8 were not subjected to a diffusion treatment.
- Comparative Example 1 since the Ni coating was not performed, the processing speed was low.
- Inventive Example 1 was Ni-coated, so the processing speed was high.
- Invention Example 2 had a Ni coating thickness of 0.15 ⁇ m, and the processing speed was the highest among those subjected to diffusion treatment using stainless steel A.
- Invention Example 3 had a Ni coating thickness of 2 ⁇ m and a small cross-sectional area of the core wire, so the tensile strength was low, but the processing speed was higher than that of Comparative Example 8.
- Comparative Example 2 the Ni coating thickness was 3 ⁇ m, the cross-sectional area of the core wire was too small, the tensile strength was low and outside the scope of the invention, and therefore the processing speed was lower than that of Comparative Example 8.
- Comparative Example 3 the thickness of the Ni coating was set to 0.15 ⁇ m as in Invention Example 2 in which the tensile strength of the core wire was lowered and the processing speed was high, but the processing speed was lower than that in Comparative Example 8.
- Inventive example 4 used stainless steel B, which has a higher tensile strength than stainless steel A, so that the processing speed was higher than that of stainless steel A.
- the comparative example 4 had low tensile strength in 400 degreeC.
- Comparative Example 5 since Ni coating was not performed, the processing speed was low.
- Invention Example 5 had a high processing speed by performing Ni coating.
- Invention Example 6 had a Ni coating thickness of 0.15 ⁇ m, and the processing speed was the highest among those in which stainless steel A was not used for diffusion treatment.
- Invention Example 7 had a Ni coating thickness of 2 ⁇ m and a small cross-sectional area of the core wire, so the tensile strength was low, but the processing speed was higher than that of Comparative Example 8.
- Comparative Example 6 the thickness of the Ni coating was 3 ⁇ m, the cross-sectional area of the core wire was too small, the tensile strength was low and outside the scope of the invention, and therefore the processing speed was smaller than that of Comparative Example 8.
- Comparative Example 7 the thickness of the Ni coating was set to 0.15 ⁇ m as in Invention Example 6 in which the tensile strength of the core wire was reduced and the processing speed was high, but the processing speed was lower than that in Comparative Example 8.
- Inventive Example 8 used stainless steel B, which has a higher tensile strength than stainless steel A, so that the processing speed was higher than that of stainless steel A. Since Comparative Example 8 was a carbon steel, the tensile strength at 400 ° C. was low. The effects of the present invention were confirmed by the above examples.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrochemistry (AREA)
- Manufacturing & Machinery (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
Description
(1)ステンレス鋼線を芯線とし、該芯線の外周にニッケル(Ni)を被覆し、次いで銅(Cu)及び亜鉛(Zn)を順次被覆した電極線であって、引張強さが1900N/mm2以上であることを特徴とする放電加工用電極線。
(2)前記ニッケル(Ni)の厚さが0.01~2.0μmであることを特徴とする(1)に記載の放電加工用電極線。
(3)前記電極線の常温における引張強さが1900~3200N/mm2であって、該電極線の400℃における引張強さが、常温における引張強さの70%以上であることを特徴とする(1)または(2)に記載の放電加工用電極線。
(5)前記銅(Cu)及び亜鉛(Zn)を合金化する熱処理を施したことを特徴とする(1)~(4)のいずれか一項に記載の放電加工用電極線。
(6)熱間引張加工により真直加工を施したことを特徴とする(1)~(5)のいずれか一項に記載の放電加工用電極線。
2 Ni被覆
3 Cu被覆
4 Zn被覆
5 Cu及びZn合金化被覆
比較例1は、Ni被覆を行わなかったため、加工速度が低かった。
発明例1は、Ni被覆を行ったので、加工速度が高かった。
発明例2は、Ni被覆の厚さが0.15μmであり、ステンレスAを用いて拡散処理を行ったものの中では、加工速度が最も高かった。
発明例3は、Ni被覆の厚みが2μmであり芯線の断面積が小さいため、引張強さが低くなったが、加工速度は比較例8に比べて高かった。
比較例2は、Ni被覆の厚みが3μmであり、芯線の断面積が小さくなり過ぎて引張強さが低く発明範囲外であり、そのため加工速度が比較例8より小さくなった。
比較例3は、芯線の引張強さを低くして、加工速度が高かった発明例2と同じく、Ni被覆の厚さを0.15μmとしたが、加工速度が比較例8よりも低かった。
発明例4は、ステンレスAよりも引張強さの高いステンレスBを用いたため、加工速度がステンレスAよりも更に高かった。
比較例5は、Ni被覆を行わなかったため、加工速度が低かった。
発明例5は、Ni被覆を行うことにより、加工速度が高かった。
発明例6は、Ni被覆の厚さが0.15μmであり、ステンレスAを用いて拡散処理を行わなかったものの中では、加工速度が最も高かった。
発明例7は、Ni被覆の厚みが2μmであり芯線の断面積が小さいため、引張強さが低くなったが、加工速度は比較例8に比べて高かった。
比較例6は、Ni被覆の厚みが3μmであり、芯線の断面積が小さくなり過ぎて引張強さが低く発明範囲外であり、そのため加工速度が比較例8より小さくなった。
比較例7は、芯線の引張強さを低くして、加工速度が高かった発明例6と同じく、Ni被覆の厚さを0.15μmとしたが、加工速度が比較例8よりも低かった。
発明例8は、ステンレスAよりも引張強さの高いステンレスBを用いたため、加工速度がステンレスAよりも更に高かった。
比較例8は、炭素鋼なので400℃における引張強さが低かった。
以上の実施例により、本発明の効果が確認された。
Claims (6)
- ステンレス鋼線を芯線とし、該芯線の外周にニッケル(Ni)を被覆し、次いで銅(Cu)及び亜鉛(Zn)を順次被覆した電極線であって、引張強さが1900N/mm2以上であることを特徴とする放電加工用電極線。
- 前記ニッケル(Ni)の厚さが0.01~2.0μmであることを特徴とする請求項1に記載の放電加工用電極線。
- 前記電極線の常温における引張強さが1900~3200N/mm2であって、該電極線の400℃における引張強さが、常温における引張強さの70%以上であることを特徴とする請求項1または請求項2に記載の放電加工用電極線。
- 前記電極線の伸線加工後の断面外径がφ0.03mm~0.1mmであることを特徴とする請求項1~3のいずれか一項に記載の放電加工用電極線。
- 前記銅(Cu)及び亜鉛(Zn)を合金化する熱処理を施したことを特徴とする請求項1~4のいずれか一項に記載の放電加工用電極線。
- 熱間引張加工により真直加工を施したことを特徴とする請求項1~5のいずれか一項に記載の放電加工用電極線。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201180015221.0A CN102971102B (zh) | 2010-06-04 | 2011-05-30 | 放电加工用电极线 |
| EP11789730.6A EP2578343B1 (en) | 2010-06-04 | 2011-05-30 | Electrode wire for electrical discharge machining |
| KR1020127024816A KR101486028B1 (ko) | 2010-06-04 | 2011-05-30 | 방전 가공용 전극선 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010128357A JP5231486B2 (ja) | 2010-06-04 | 2010-06-04 | 放電加工用電極線 |
| JP2010-128357 | 2010-06-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011152327A1 true WO2011152327A1 (ja) | 2011-12-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2011/062302 Ceased WO2011152327A1 (ja) | 2010-06-04 | 2011-05-30 | 放電加工用電極線 |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2578343B1 (ja) |
| JP (1) | JP5231486B2 (ja) |
| KR (1) | KR101486028B1 (ja) |
| CN (1) | CN102971102B (ja) |
| WO (1) | WO2011152327A1 (ja) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013009767A1 (de) * | 2013-06-11 | 2014-12-11 | Heinrich Stamm Gmbh | Drahtelektrode zum funkenerosiven Schneiden von Gegenständen |
| CN104191056B (zh) * | 2014-08-13 | 2016-06-29 | 宁波博威麦特莱科技有限公司 | 一种高精度锌基合金电极丝及其制备方法 |
| CN104400159A (zh) * | 2014-10-28 | 2015-03-11 | 苏州市宝玛数控设备有限公司 | 一种高效多层复合电极丝 |
| CN105057802A (zh) * | 2015-08-10 | 2015-11-18 | 江苏塞维斯数控科技有限公司 | 用于线切割机床的耐热刀具 |
| DE102017008325B4 (de) | 2017-08-29 | 2021-10-28 | Berkenhoff Gmbh | Drahtelektrode zum funkenerosiven Schneiden eines Gegenstandes |
| KR20190037736A (ko) | 2017-09-29 | 2019-04-08 | 주식회사 풍국 | 프린티드 전극선 및 그 제조방법 |
| CN108857286A (zh) * | 2018-08-01 | 2018-11-23 | 宁波康强微电子技术有限公司 | 波纹形放电加工电极线及其制备方法 |
| KR20200049183A (ko) * | 2018-10-31 | 2020-05-08 | 주식회사 풍국 | 방전가공용 전극선 및 그 제조방법 |
| WO2022249336A1 (ja) * | 2021-05-26 | 2022-12-01 | 住友電気工業株式会社 | 電線および電線の製造方法 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0366524A (ja) * | 1989-07-31 | 1991-03-22 | Kanai Hiroyuki | 放電加工用電極線 |
| JPH03111126A (ja) | 1989-09-27 | 1991-05-10 | Kanai Hiroyuki | 放電加工用電極線 |
| JPH09103922A (ja) | 1995-10-09 | 1997-04-22 | Kanai Hiroaki | ワイヤ放電加工用電極線 |
| JP2000107943A (ja) * | 1998-09-30 | 2000-04-18 | Sodick Co Ltd | ワイヤ放電加工用電極線 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6171925A (ja) * | 1984-09-11 | 1986-04-12 | Furukawa Electric Co Ltd:The | 放電加工用複合電極線の製造法 |
| JPS62148121A (ja) * | 1985-12-20 | 1987-07-02 | Sumitomo Electric Ind Ltd | 放電加工用カツトワイヤ |
| JP3319271B2 (ja) * | 1996-03-05 | 2002-08-26 | 日立電線株式会社 | 放電加工用電極線 |
| WO2005097387A1 (en) * | 2004-04-01 | 2005-10-20 | Nv Bekaert Sa | Electrode for high-speed electrical discharge machining |
| WO2009028117A1 (ja) * | 2007-12-10 | 2009-03-05 | Oki Electric Cable Co., Ltd. | ワイヤ放電加工用電極線、その製造方法及びその母線製造装置 |
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2010
- 2010-06-04 JP JP2010128357A patent/JP5231486B2/ja active Active
-
2011
- 2011-05-30 CN CN201180015221.0A patent/CN102971102B/zh active Active
- 2011-05-30 EP EP11789730.6A patent/EP2578343B1/en active Active
- 2011-05-30 WO PCT/JP2011/062302 patent/WO2011152327A1/ja not_active Ceased
- 2011-05-30 KR KR1020127024816A patent/KR101486028B1/ko active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0366524A (ja) * | 1989-07-31 | 1991-03-22 | Kanai Hiroyuki | 放電加工用電極線 |
| JPH03111126A (ja) | 1989-09-27 | 1991-05-10 | Kanai Hiroyuki | 放電加工用電極線 |
| JPH09103922A (ja) | 1995-10-09 | 1997-04-22 | Kanai Hiroaki | ワイヤ放電加工用電極線 |
| JP2000107943A (ja) * | 1998-09-30 | 2000-04-18 | Sodick Co Ltd | ワイヤ放電加工用電極線 |
Non-Patent Citations (1)
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Also Published As
| Publication number | Publication date |
|---|---|
| KR101486028B1 (ko) | 2015-01-22 |
| JP2011251394A (ja) | 2011-12-15 |
| EP2578343A4 (en) | 2014-04-30 |
| KR20130027469A (ko) | 2013-03-15 |
| JP5231486B2 (ja) | 2013-07-10 |
| EP2578343B1 (en) | 2016-06-01 |
| EP2578343A1 (en) | 2013-04-10 |
| CN102971102A (zh) | 2013-03-13 |
| CN102971102B (zh) | 2014-12-17 |
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