JP3319497B2 - Method of manufacturing electrode wire for electric discharge machining - Google Patents
Method of manufacturing electrode wire for electric discharge machiningInfo
- Publication number
- JP3319497B2 JP3319497B2 JP04152596A JP4152596A JP3319497B2 JP 3319497 B2 JP3319497 B2 JP 3319497B2 JP 04152596 A JP04152596 A JP 04152596A JP 4152596 A JP4152596 A JP 4152596A JP 3319497 B2 JP3319497 B2 JP 3319497B2
- Authority
- JP
- Japan
- Prior art keywords
- wire
- discharge machining
- electrode wire
- electric discharge
- core material
- 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.)
- Expired - Fee Related
Links
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- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、放電加工用電極線
の製造方法に関し、特に、ＺｒをＣｕ中に固溶させるこ
とによって耐熱性、つまり高温強度を向上させた電極線
の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing an electrode wire for electric discharge machining, and more particularly to a method of manufacturing an electrode wire having improved heat resistance, that is, high-temperature strength, by dissolving Zr in Cu.
【０００２】[0002]
【従来の技術】従来の放電加工用電極線として、例え
ば、以下に示されるものがある。 （イ）Ｃｕー３５％Ｚｎ黄銅線によって線材を構成して
加工速度の向上を図っている（伸銅技研会誌、２６、１
９８７）。 （ロ）金属芯材の上にＺｎ等を少なくとも５０％含む合
金からなる金属被覆を設けた線材（特開昭５７ー５６４
８）。 （ハ）ＣｕーＺｎ系合金芯材の表面にＣｕーＺｎ相の層
を形成した線材（特開昭６１ー１９７１２６）。 （ニ）Ｚｎ等の低融点の金属元素の濃度を外表面程高く
した線材（特公平４ー３５５４３）。 （ホ）鋼線に銅等の通電良好な金属を被覆した複合線材
（特公昭５７ー５７２１）。 （ヘ）銅被覆鋼線の上に表層に向かってＺｎ濃度が高く
なる濃度勾配を有するＣｕーＺｎ合金層を設けた線材
（特公平２ー４９８４９）。 （ト）Ｃｕ合金にＺｎ、またはＺｎ合金を浸漬焼鈍させ
て表面にＺｎ富化層を形成した線材（特開昭６２ー２１
８０２６）。 （チ）Ｃｕ合金線の外周面に特定の厚さのＣｕーＺｎ合
金層を設け、このＣｕーＺｎ合金層の外側に特定の厚さ
のＺｎ層を設けた線材（特開昭６１ー１１７０２１）。 （リ）熱伝導性に優れたＣｕにＣｒ、Ｚｒ、Ｆｅ、Ｂ
ｅ、Ｃｏ、およびＴｉから選んだ一種あるいは二種以上
の元素を０．０３重量％から５．０重量％含有した合金
線の外周にＺｎ層あるいはＣｕーＺｎ合金層を形成した
線材（特開昭５９ー１３４６２４）。 （ヌ）Ｃｕ合金をＺｎ等の溶融浴に通し、酸化を防ぎつ
つ冷却して製造された線材（特開昭５９ー１２３７５
２）。2. Description of the Related Art As a conventional electrode wire for electric discharge machining, for example, there is the following one. (A) A wire rod is made of a Cu-35% Zn brass wire to improve the processing speed (Journal of Copper and Brass Technical Research Association, 26, 1).
987). (B) A wire rod in which a metal coating made of an alloy containing at least 50% of Zn or the like is provided on a metal core material (JP-A-57-564)
8). (C) A wire rod in which a Cu-Zn phase layer is formed on the surface of a Cu-Zn-based alloy core (JP-A-61-197126). (D) A wire rod in which the concentration of a metal element having a low melting point such as Zn is increased toward the outer surface (Japanese Patent Publication No. 4-35543). (E) A composite wire in which a steel wire is coated with a metal such as copper which has good electrical conductivity (Japanese Patent Publication No. 57-5721). (F) A wire rod provided with a Cu-Zn alloy layer having a concentration gradient in which the Zn concentration increases toward the surface layer on a copper-coated steel wire (Japanese Patent Publication No. 2-49849). (G) A wire rod in which Zn or a Zn alloy is immersed and annealed in a Cu alloy to form a Zn-enriched layer on the surface
8026). (H) A wire rod in which a Cu-Zn alloy layer having a specific thickness is provided on the outer peripheral surface of a Cu alloy wire, and a Zn layer having a specific thickness is provided outside the Cu-Zn alloy layer ). (I) Cr, Zr, Fe, B added to Cu with excellent thermal conductivity
A wire in which a Zn layer or a Cu—Zn alloy layer is formed on the outer periphery of an alloy wire containing 0.03% by weight to 5.0% by weight of one or more elements selected from e, Co, and Ti 1984-134624). (D) A wire manufactured by passing a Cu alloy through a molten bath of Zn or the like and cooling while preventing oxidation (Japanese Patent Laid-Open No. 59-12375).
2).
【０００３】この中で、特開昭５９ー１３４６２４号公
報に示されている放電加工用電極線は、外周にＺｎ層、
あるいは芯材より高い濃度のＺｎを含んだＣｕーＺｎ合
金層を有しており、この被覆層によって加工性を向上さ
せている。一方、放電加工の際に抗張力性が要求され
る。これをを増加させるために、Ｃｕー３５％Ｚｎ黄銅
線にＣｒ、Ｍｇ、Ｚｒ、Ｔｉ、Ｓｉ、Ｍｎ、およびＡｌ
等を添加することも検討されている。また、一般にＣｕ
にＺｒを添加して得たＣｕーＺｒ線材は、９５０°Ｃ、
３時間の加熱とそれに続く水冷によって実行される溶体
化処理を受けることにより耐熱性が付与される。[0003] Among them, the electrode wire for electric discharge machining disclosed in JP-A-59-134624 has a Zn layer on the outer periphery,
Alternatively, it has a Cu-Zn alloy layer containing Zn at a higher concentration than the core material, and the workability is improved by this coating layer. On the other hand, tensile strength is required during electric discharge machining. In order to increase this, Cr, Mg, Zr, Ti, Si, Mn, and Al
Addition of such as is also being studied. Generally, Cu
Cu-Zr wire obtained by adding Zr to 950 ° C.
Heat resistance is imparted by undergoing a solution treatment performed by heating for 3 hours followed by water cooling.
【０００４】[0004]
【発明が解決しようとする課題】このため、従来の放電
加工用電極線の製造方法として、Ｃｕ−Ｚｒ合金の溶体
化を９５０°Ｃで３時間という条件で行うとすれば、コ
ストアップの原因になることは避けられず、コストパフ
ォーマンスが悪く、溶体化処理を合理化したいとの要求
が生じていた。Therefore, as a conventional method of manufacturing an electrode wire for electric discharge machining, if the solution of a Cu-Zr alloy is carried out at 950 ° C. for 3 hours, the cost increases. Inevitably, cost performance is poor, and there has been a demand for streamlining solution treatment.
【０００５】従って、本発明の目的は、耐熱性の向上を
考慮し、コストパフォーマンスに優れた放電加工用電極
線の製造方法を提供することにある。Accordingly, an object of the present invention is to provide a method of manufacturing an electrode wire for electric discharge machining which is excellent in cost performance in consideration of improvement in heat resistance.
【０００６】[0006]
【課題を解決するための手段】本発明は、上記の目的を
実現するため、ＣｕーＺｒ系合金を芯材とし、この芯材
をＺｎまたはＣｕーＺｎ合金の溶融浴に通してメッキ
し、メッキした芯材を急速冷却して、ＺｒをＣｕ中に固
溶させて溶体化処理することによって耐熱性を付与し、
その後、冷間伸線を行う放電加工用電極線の製造方法を
提供する。According to the present invention, a Cu—Zr alloy is used as a core material, and the core material is plated through a molten bath of Zn or Cu—Zn alloy to achieve the above object. By rapidly cooling the plated core material, Zr is dissolved in Cu and subjected to a solution treatment to impart heat resistance,
Thereafter, a method of manufacturing an electrode wire for electric discharge machining that performs cold drawing is provided.
【０００７】[0007]
【発明の実施の形態】図１は、本発明を実施する放電加
工用電極線の製造装置を示す。この製造装置は、Ｃｕー
Ｚｒ系合金線を送り出す送り出しボビン１０と、送り出
されたＣｕーＺｒ系合金線を位置決めする位置決めロー
ル１２と、ＣｕーＺｒ系合金線にＣｕあるいはＣｕーＺ
ｎのメッキを施す被覆炉５と、メッキされたＣｕーＺｒ
系合金線を支持するロール７および８と、ロール７およ
び８の間に設けられた冷却水槽６と、冷却水槽６を出た
メッキされたＣｕーＺｒ系合金線を定速で巻き取る定速
巻取機９と、定速で巻き取られたメッキ後のＣｕーＺｒ
系合金線を冷間伸線する伸線機１３と、メッキ後に冷間
伸線されたＣｕーＺｒ系合金線を巻き取る巻取ボビン１
１を有している。FIG. 1 shows an apparatus for manufacturing an electrode wire for electric discharge machining according to the present invention. This manufacturing apparatus includes a delivery bobbin 10 for sending out a Cu-Zr-based alloy wire, a positioning roll 12 for positioning the sent Cu-Zr-based alloy wire, and a Cu or Cu-Z
coating furnace 5 for plating n-plated Cu-Zr
Rolls 7 and 8 for supporting the system alloy wire, a cooling water tank 6 provided between the rolls 7 and 8, and a constant speed for winding the plated Cu-Zr system alloy wire exiting the cooling water tank 6 at a constant speed. Winder 9 and plated Cu-Zr wound at a constant speed
Wire drawing machine 13 for cold drawing a system alloy wire, and a winding bobbin 1 for winding a Cu-Zr system alloy wire cold drawn after plating.
One.
【０００８】被覆炉５は、ヒータ１ａによって加熱され
てＺｎあるいはＣｕーＺｎを溶融する溶解炉１に接続さ
れており、溶解炉１からＺｎあるいはＣｕーＺｎの溶湯
２の供給を受ける。被覆炉５は、入口にニップル３を有
し、出口にダイス４を有している。The coating furnace 5 is connected to a melting furnace 1 which is heated by a heater 1a to melt Zn or Cu-Zn, and receives a supply of a molten metal 2 of Zn or Cu-Zn from the melting furnace 1. The coating furnace 5 has a nipple 3 at an inlet and a die 4 at an outlet.
【０００９】以下、動作を説明する。初めに、ＣｕーＺ
ｒ系合金線は送り出しボビン１０から位置決めロール１
２で位置決めされ、ニップル３を通り被覆炉５の中に送
り込まれ、この被覆炉５で溶解炉１から供給されるＺｎ
あるいはＣｕーＺｎの溶湯２の中を通され、Ｚｎあるい
はＣｕーＺｎの被覆層をＣｕーＺｒ系合金線の外周に形
成される。ＺｎあるいはＣｕーＺｎの被覆層はダイス４
で所定の外径にされ、被覆炉５の外に送り出される。次
に、メッキされたＣｕーＺｒ系合金線はロール７に支持
されて冷却水槽６に入り、急速冷却された後ロール８に
支持されながら定速巻取機９に巻き取られる。この後、
メッキされたＣｕーＺｒ系合金線は伸線機１３で冷間伸
線され、所定の外径のＣｕーＺｒ系合金線の外周に所定
の厚さのメッキ層を有する線材として巻取ボビン１１に
巻き取られる。The operation will be described below. First, Cu-Z
The r-based alloy wire is fed from the delivery bobbin 10 to the positioning roll
2, is fed into the coating furnace 5 through the nipple 3, and is supplied from the melting furnace 1 by the coating furnace 5.
Alternatively, it is passed through the molten Cu-Zn 2 to form a coating layer of Zn or Cu-Zn on the outer periphery of the Cu-Zr-based alloy wire. The coating layer of Zn or Cu-Zn is a die 4
And is sent out of the coating furnace 5. Next, the plated Cu-Zr-based alloy wire is supported by the roll 7 and enters the cooling water tank 6, and after being rapidly cooled, is wound up by the constant-speed winder 9 while being supported by the roll 8. After this,
The plated Cu-Zr-based alloy wire is cold drawn by a wire drawing machine 13, and is wound up as a wire bobbin 11 having a plating layer of a predetermined thickness on the outer periphery of the Cu-Zr-based alloy wire of a predetermined outer diameter. It is wound up.
【００１０】図２は、本発明で製造された電極線を使用
して加工物を放電加工する際の加工電流の波形を示す。
この波形は、最大値Ｉp を３６Ａとし、ＯＮ時間ｔ1 を
可変とし、ＯＦＦ時間ｔ2 を２．８μｓとした矩形波で
ある。FIG. 2 shows a waveform of a machining current when electric discharge machining is performed on a workpiece using the electrode wire manufactured according to the present invention.
This waveform is a rectangular wave in which the maximum value I p is 36 A, the ON time t 1 is variable, and the OFF time t 2 is 2.8 μs.
【００１１】[0011]
【実施例１】本発明で製造された放電加工用電極線を加
工に用いた一実施例を示す。Ｃｕー０．１６％Ｚｒ（外
形２．６ｍｍ）を芯材とし、これにＣｕー４０％Ｚｎ合
金を０．３ｍｍの厚さに被覆するとともに溶体化処理
し、これを冷間伸線して外径０．２ｍｍの放電加工用電
極線を作製した。この被覆層は約２０μｍである。[Embodiment 1] An embodiment using an electrode wire for electric discharge machining manufactured by the present invention for machining will be described. Cu-0.16% Zr (outer diameter 2.6mm) is used as a core material, and a Cu-40% Zn alloy is coated on the core material to a thickness of 0.3mm and solution-treated. An electrode wire for electric discharge machining having an outer diameter of 0.2 mm was produced. This coating is about 20 μm.
【００１２】この電極線を用いて、図２に示されるパル
ス電流により、ＳＫＤー１１（厚さ４０ｍｍ）を加工し
た。その結果を図３に示す。本発明で製造された電極線
はＣｕー３５％Ｚｎ線と比較して、加工速度が約１．５
倍になり、断線が生じる放電パルス電流（加工電流）の
ＯＮ時間ｔ1 も大幅に伸びた。実際には、Ｃｕー３５％
Ｚｎ線は、１．２μｓの印加時間、１．９５ｍｍ／ｍｉ
ｎの加工速度で断線したのに対し、本発明の電極線は、
１．５μｓの印加時間、２．３５ｍｍ／ｍｉｎの加工速
度まで断線しなかった。Using this electrode wire, SKD-11 (thickness: 40 mm) was processed by the pulse current shown in FIG. The result is shown in FIG. The electrode wire manufactured by the present invention has a processing speed of about 1.5 times as compared with the Cu-35% Zn wire.
The ON time t 1 of the discharge pulse current (machining current) at which the disconnection occurs was greatly increased. Actually, Cu-35%
The Zn line has an application time of 1.2 μs, 1.95 mm / mi
While the wire was broken at a processing speed of n, the electrode wire of the present invention was
No disconnection occurred up to an application time of 1.5 μs and a processing speed of 2.35 mm / min.
【００１３】また、加工物の表面の粗さも、０．８μｓ
の印加時間、２．０ｍｍ／ｍｉｎの加工速度で、Ｃｕー
３５％Ｚｎ線は１．３１５μｍであったのに対し、本発
明の電極線は１．２８５μｍになった。The surface roughness of the workpiece is 0.8 μs.
At an application time of 2.0 mm / min and a processing speed of 2.0 mm / min, the Cu-35% Zn wire was 1.315 μm, whereas the electrode wire of the present invention was 1.285 μm.
【００１４】[0014]
【実施例２】本発明で製造された放電加工用電極線を加
工に用いた他の実施例を示す。Ｃｕー０．１６％Ｚｒ
（外形２．６ｍｍ）を芯材とし、これにＺｎを０．３ｍ
ｍの厚さに被覆するとともに溶体化処理し、これを冷間
伸線して外径０．２ｍｍの放電加工用電極線を作製し
た。Embodiment 2 Another embodiment using the electrode wire for electric discharge machining manufactured by the present invention for machining will be described. Cu-0.16% Zr
(Outer diameter 2.6 mm) as a core material, and Zn 0.3 m
m and a solution treatment, and the wire was cold drawn to produce an electrode wire for electric discharge machining having an outer diameter of 0.2 mm.
【００１５】この電極線を用いて、図２に示されるパル
ス電流により、ＳＫＤー１１（厚さ４０ｍｍ）を加工し
た。その結果は、本発明で製造された電極線の性能も実
施例１で示されたものとほぼ同様になった。Using this electrode wire, SKD-11 (thickness: 40 mm) was processed by the pulse current shown in FIG. As a result, the performance of the electrode wire manufactured by the present invention was almost the same as that shown in Example 1.
【００１６】[0016]
【発明の効果】以上説明したように、本発明の放電加工
用電極線の製造方法によると、ＣｕーＺｒ系合金線をＺ
ｎまたはＣｕーＺｎ合金を溶融浴に通してメッキし、メ
ッキしたＣｕーＺｒ系合金線を急速冷却してＺｒをＣｕ
中に固溶させることによって耐熱性を付与し、その後、
冷間伸線を行うので、溶体化処理を効果的に実現するこ
とができ、断線と加工表面の粗さを抑えながら電極線の
耐熱性を向上させることもできる。As described above, according to the method for manufacturing an electrode wire for electric discharge machining of the present invention, the Cu-Zr alloy wire is
n or Cu-Zn alloy is plated through a molten bath, and the plated Cu-Zr-based alloy wire is rapidly cooled to reduce Zr to Cu.
By giving a solid solution in it, heat resistance is given, and then
Since the cold drawing is performed, the solution treatment can be effectively realized, and the heat resistance of the electrode wire can be improved while suppressing the disconnection and the roughness of the processed surface.
【図１】本発明を実現する製造装置を示す。FIG. 1 shows a manufacturing apparatus for realizing the present invention.
【図２】本発明で作製された放電加工用電極線の性能を
評価する試験に用いられるパルス電流の波形を示す。FIG. 2 shows a waveform of a pulse current used in a test for evaluating the performance of the electrode wire for electric discharge machining manufactured in the present invention.
【図３】本発明で作製された放電加工用電極線の性能を
評価した結果を示す。FIG. 3 shows the results of evaluating the performance of the electrode wire for electrical discharge machining manufactured according to the present invention.
１．溶解炉 １ａ．ヒータ ２．溶湯 ３．ニップル ４．ダイス ５．被覆炉 ６．冷却水槽 ７．ロール ８．ロール ９．定速巻取機 １０．送り出しボビン １１．巻き取りボビン １２．位置決ロール １３．伸線機 1. Melting furnace 1a. Heater 2. Molten metal 3. Nipple 4. Dice 5. Coating furnace 6. Cooling water tank 7. Roll 8. Roll 9. Constant-speed winding machine 10. Delivery bobbin 11. Winding bobbin 12. Positioning roll 13. Wire drawing machine
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭59−134624（ＪＰ，Ａ) 特開 平５−177443（ＪＰ，Ａ) 特開 昭61−117021（ＪＰ，Ａ) 特開 平１−246020（ＪＰ，Ａ) 特開 平８−100249（ＪＰ，Ａ) 特開 昭62−23977（ＪＰ，Ａ) 特開 平６−79535（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B23H 7/08 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-134624 (JP, A) JP-A-5-177443 (JP, A) JP-A-61-117021 (JP, A) JP-A-1- 246020 (JP, A) JP-A-8-100249 (JP, A) JP-A-62-2977 (JP, A) JP-A-6-79535 (JP, A) (58) Fields investigated (Int. 7 , DB name) B23H 7/08
Claims (2)
をＺｎの溶融浴に通してメッキし、メッキした芯材を急
速冷却してＺｒをＣｕ中に固溶させて溶体化処理するこ
とによって耐熱性を付与し、その後、冷間伸線を行うこ
とを特徴とする放電加工用電極線の製造方法。1. A Cu-Zr alloy wire is used as a core material, and this core material is plated through a molten bath of Zn, and the plated core material is rapidly cooled to form a solid solution of Zr in Cu to form a solution. processing heat resistance imparted by the this <br/> that, then, the production method of electrical discharge machining electrode wire, characterized in that performing the cold drawing.
をＣｕーＺｎ合金の溶融浴に通してメッキし、メッキし
た芯材を急速冷却をしてＺｒをＣｕ中に固溶させて溶体
化処理することによって耐熱性を付与し、その後、冷間
伸線を行うことを特徴とする放電加工用電極線の製造方
法。2. A Cu-Zr-based alloy wire is used as a core material, and this core material is plated by passing it through a Cu-Zn alloy melting bath, and the plated core material is rapidly cooled to dissolve Zr in Cu. Let me melt
A method for producing an electrode wire for electric discharge machining, wherein heat treatment is imparted by heat treatment , followed by cold drawing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04152596A JP3319497B2 (en) | 1996-02-28 | 1996-02-28 | Method of manufacturing electrode wire for electric discharge machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04152596A JP3319497B2 (en) | 1996-02-28 | 1996-02-28 | Method of manufacturing electrode wire for electric discharge machining |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09234631A JPH09234631A (en) | 1997-09-09 |
| JP3319497B2 true JP3319497B2 (en) | 2002-09-03 |
Family
ID=12610820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04152596A Expired - Fee Related JP3319497B2 (en) | 1996-02-28 | 1996-02-28 | Method of manufacturing electrode wire for electric discharge machining |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3319497B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100817482B1 (en) * | 2006-06-17 | 2008-03-27 | 에너지마스타 주식회사 | Heating and warm water supplying system for a heat pump |
-
1996
- 1996-02-28 JP JP04152596A patent/JP3319497B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09234631A (en) | 1997-09-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |