JPH02298434A - Electrode wire for wire electric discharge machining - Google Patents
Electrode wire for wire electric discharge machiningInfo
- Publication number
- JPH02298434A JPH02298434A JP11675489A JP11675489A JPH02298434A JP H02298434 A JPH02298434 A JP H02298434A JP 11675489 A JP11675489 A JP 11675489A JP 11675489 A JP11675489 A JP 11675489A JP H02298434 A JPH02298434 A JP H02298434A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- discharge machining
- electrode
- weight
- 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.)
- Pending
Links
- 238000003754 machining Methods 0.000 title abstract description 18
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims abstract description 11
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 10
- 238000009763 wire-cut EDM Methods 0.000 claims description 10
- 238000005491 wire drawing Methods 0.000 abstract description 5
- 238000009760 electrical discharge machining Methods 0.000 description 15
- 229910001369 Brass Inorganic materials 0.000 description 7
- 239000010951 brass Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、ワイヤ放電加工用電極線に関し、特に放電
加工速度を向上させ、被加工物への付着を減少させたワ
イヤ放電加工用電極線に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an electrode wire for wire electrical discharge machining, and in particular to an electrode wire for wire electrical discharge machining that improves electrical discharge machining speed and reduces adhesion to a workpiece. It is related to.
［従来の技術］
ワイヤ放電加工は、被加工物と線状の加工電極（ワイヤ
放電加工用電極線と称する）との間に、水、油等の加工
液を介し間欠的な放電を起こさせながら、被加工物をワ
イヤ放電加工用電極線に対して相対的に移動させること
により、被加工物を所望の形状に溶融切断する方法であ
る。この方法は、各種金型の製造等に利用されている。[Prior Art] Wire electrical discharge machining involves causing intermittent electrical discharge between a workpiece and a linear machining electrode (referred to as a wire electrical discharge machining electrode wire) via a machining fluid such as water or oil. However, this is a method of melting and cutting the workpiece into a desired shape by moving the workpiece relatively to the electrode wire for wire electric discharge machining. This method is used for manufacturing various molds, etc.
このようなワイヤ放電加工においては、被加工物の仕上
り加工精度および仕上り表面状態が良好なこと、電極線
が被加工物に付着しないこと、および放電加工時間が短
いこと、といった放電加工特性が要求されている。電極
線として優れた伸線加工性、強度を持つことから、従来
から黄銅線が用いられている。Such wire electrical discharge machining requires electrical discharge machining characteristics such as good finishing accuracy and finished surface condition of the workpiece, the electrode wire not adhering to the workpiece, and short electrical discharge machining time. has been done. Brass wire has traditionally been used as an electrode wire because it has excellent wire drawability and strength.
ところが、最近では加工電源の改良進歩に伴い、これに
対応して放電加工速度を向上させることのできる電極線
が望まれている。しかし、黄銅線では放電加工速度が劣
り、被加工物への付着量も多く、かつ、高温強度が不足
しているため、ワイヤの負荷張力を高くして放電加工す
ると断線しやすい欠点かある。そこで、このような問題
点を解決するために、黄銅にさらにＡｆｌ、Ｓｉなどの
元素を添加したＣｕ合金線が用いられている。However, in recent years, as machining power supplies have been improved, there has been a demand for electrode wires that can increase the speed of electrical discharge machining. However, brass wire has poor electrical discharge machining speed, has a large amount of adhesion to the workpiece, and lacks high-temperature strength, so it has the disadvantage that it is easily broken when the wire is subjected to electrical discharge machining with a high load tension. Therefore, in order to solve these problems, a Cu alloy wire is used, which is made by adding elements such as Afl and Si to brass.
たとえば、特開昭５７−４１１３４号公報には、黄銅に
ＡＩＪを添加したものからなる電極線が開示されている
。また、特開昭５９−１９６３９号公報にはＺｎを２６
〜３８重量％、ＡＱ、を０．２〜１．５重量％、Ｓｉを
０．２〜１． ０重量％含有したＣｕ合金からなる電極
線などが開示されている。For example, Japanese Unexamined Patent Publication No. 57-41134 discloses an electrode wire made of brass to which AIJ is added. Furthermore, in Japanese Patent Application Laid-open No. 59-19639, Zn is added to 26
~38% by weight, AQ: 0.2~1.5% by weight, Si: 0.2~1. An electrode wire made of a Cu alloy containing 0% by weight has been disclosed.
［発明が解決しようとする課題］
上述のように示されている黄銅にＡｆｌを添加したもの
からなる電極線を用いると、高温強度および放電加工速
度が黄銅線に比べて向上する。しかしながら、放電加工
速度は黄銅線を用いたときに比べて１．１倍程度しか向
上せず、それ以上の放電加工速度を得ようとすると断線
か発生しやすくなる。[Problems to be Solved by the Invention] When an electrode wire made of brass to which Afl is added as described above is used, high temperature strength and electric discharge machining speed are improved compared to the brass wire. However, the electric discharge machining speed is only improved by about 1.1 times compared to when brass wire is used, and if an attempt is made to obtain a higher electric discharge machining speed, wire breakage is likely to occur.
また上述のように示されている含有率でＺｎ。Also Zn at the content indicated above.
ＡＱおよびＳｌを含有したＣｕ合金からなる電極線を用
いた場合、放電加工速度は向上し、かつ、被加工物への
１１１着量も減少する。しかし、ＡＱを０．５重量％以
上含有している上記Ｃｕ合金の下では、ＳｉかＡｕ含有
量と同量程度あるいはそれ以上存在している場合、放電
加工速度は向上するが、電極線としての伸線加工性か悪
く、伸線できたとしても脆くなる。したかって電極線と
して用いた場合、高温強度か低下し、断線が発生しやす
くなるという問題かある。When an electrode wire made of a Cu alloy containing AQ and Sl is used, the electrical discharge machining speed is improved and the amount of 111 deposited on the workpiece is also reduced. However, in the above-mentioned Cu alloy containing 0.5% by weight or more of AQ, if Si or Au is present in the same amount or more, the electrical discharge machining speed improves, but it is difficult to use as an electrode wire. The wire drawability is poor, and even if the wire can be drawn, it will be brittle. Therefore, when used as an electrode wire, there is a problem that the high temperature strength decreases and wire breakage is more likely to occur.
それゆえに、この発明の目的は、放電加工速度を向上さ
せ、被加工物への付着が少なく、かつ優れた伸線加工性
、高温強度を持つワイヤ放電加工用電極線を提供するこ
とにある。Therefore, an object of the present invention is to provide an electrode wire for wire electrical discharge machining that increases the electrical discharge machining speed, has less adhesion to the workpiece, and has excellent wire drawability and high temperature strength.
［課題を解決するための手段］
この発明のワイヤ放電加工用電極線では、希土類の酸化
物を０．０１〜２重量％、Ｚｎを３０〜５０重量％含有
するＣｕ合金からなることを特徴としている。希土類の
酸化物およびＺｎは、Ｃｕの地金を溶解したときに添加
し含有させることができる。[Means for Solving the Problems] The electrode wire for wire electrical discharge machining of the present invention is characterized by being made of a Cu alloy containing 0.01 to 2% by weight of rare earth oxide and 30 to 50% by weight of Zn. There is. The rare earth oxide and Zn can be added and contained when the Cu base metal is melted.
［発明の作用効果］
この発明のワイヤ放電加工用電極線では、希土類の酸化
物を０，０１〜２重蛍％含有させている。[Operations and Effects of the Invention] The electrode wire for wire electrical discharge machining of the present invention contains 0.01 to 2% of a rare earth oxide.
希土類酸化物を０，０１重量以上含有させるのは、含有
量が０，０１重量％未満になると、この発明により得ら
れる放電特性の改善が十分になされないからである。ま
た、希土類酸化物の含有量を２重量％以下としているの
は、含有量が２重量％を越えても、はぼ同程度の放電特
性しか得られないにもかかわらず抵抗か高くなりワイヤ
放電加工用電極線として適当なものでなくなるからであ
る。The reason why the rare earth oxide is contained in an amount of 0.01% by weight or more is that if the content is less than 0.01% by weight, the discharge characteristics obtained by the present invention cannot be sufficiently improved. In addition, the reason why the content of rare earth oxides is set to 2% by weight or less is that even if the content exceeds 2% by weight, the resistance will increase even though the discharge characteristics are about the same, but the wire discharge This is because it is no longer suitable as an electrode wire for processing.
この発明のワイヤ放電加工用電極線において、Ｚｎの含
有量を３０重量％以上としているのは、これより少ない
含有量では、加工速度が低く、また付着物の量も多いか
らである。またＺｎの含有量を５０重量％以下としてい
るのは、この量を越えてもそれに伴う加工速度の向上か
認められないからである。The reason why the Zn content in the electrode wire for wire electric discharge machining of the present invention is set to 30% by weight or more is that if the content is less than this, the machining speed is low and the amount of deposits is large. The reason why the Zn content is set to 50% by weight or less is that even if this amount is exceeded, no improvement in processing speed is observed.
この発明のワイヤ放電加工用電極線は、従来の電極線に
比べ、放電加工速度か高く、被加工物への付着量も少な
く、かつ表面性状に優れ、さらに高温強度が高いので使
用時の断線などのトラブルが少ない。したがって、この
発明のワイヤ放電加工用電極線は、工業上極めて有用な
電極線である。The electrode wire for wire electrical discharge machining of this invention has a higher electrical discharge machining speed, less adhesion to the workpiece, and excellent surface quality than conventional electrode wires, and also has high high temperature strength, so it breaks during use. There are fewer problems such as Therefore, the wire electric discharge machining electrode wire of the present invention is an industrially extremely useful electrode wire.
［実施例］
通常のＣｕ地金を溶解したものに、表１に示す割合とな
るように、希土類の酸化物およびＺｎを添加した。この
Ｃｕ合金材を熱間押出しにより直径８ｍｍの粗引き線に
した後、伸線加工と熱処理を繰返し行ない直径０．２ｍ
ｍの電極線を製造した。このとき伸線加工の過程で皮剥
ぎを行なった後、熱処理を加えて直径２．６ｍｍまで伸
線した。[Example] A rare earth oxide and Zn were added to a melted ordinary Cu metal in the proportions shown in Table 1. After hot extruding this Cu alloy material into a roughly drawn wire with a diameter of 8 mm, wire drawing and heat treatment were repeated to make the wire 0.2 m in diameter.
m electrode wires were manufactured. At this time, the wire was stripped during the wire drawing process, and then heat treated and wire drawn to a diameter of 2.6 mm.
さらに、この線に熱処理を行なった後、最終的に直径０
．２ｍｍの線に伸線した。なお、線癖をなくすために、
伸線工程の最終段階で軽く通電加熱処理を行なった。こ
の発明による電極線は強度の低下も少なく、引張強さ］
、００ｋｇ／ｍｍ２以上の値を持つとともに、線癖のな
い真直性に優れたものが得られた。Furthermore, after heat treatment is applied to this wire, the final diameter is 0.
．． It was drawn into a 2 mm wire. In addition, in order to eliminate line habits,
At the final stage of the wire drawing process, a light electrical heating treatment was performed. The electrode wire according to the present invention has little decrease in strength and has high tensile strength]
, 00 kg/mm2 or more, and had excellent straightness with no line defects.
得られた電極線をワイヤ放電加工機に取付けて、放電加
工速度、被加工物への付着量、被加工物の表面性状およ
び電極線の断線状況を調べた。また、希土類酸化物の量
がこの発明に規定する範囲外である電極線および希土類
酸化物を含有しない電極線を製造し、同様にして調べた
。結果を第１表に併せて示す。The obtained electrode wire was attached to a wire electrical discharge machine, and the electrical discharge machining speed, amount of adhesion to the workpiece, surface texture of the workpiece, and disconnection status of the electrode wire were examined. Further, electrode wires in which the amount of rare earth oxide was outside the range specified in the present invention and electrode wires containing no rare earth oxide were manufactured and examined in the same manner. The results are also shown in Table 1.
放電加工条件は以下に示すとおりである。The electrical discharge machining conditions are as shown below.
加工電圧：１１．ＯＶ
加工ピーク電流 ］、ＯＡ
コンデンサ容量：１．０μＦ
ワイヤ張カニｓ６ｏｇ
純水比抵抗：４Ｘ１０４．３Ｘ１０４゜２×１０４Ω・
Ｃｍ
被加工材：厚さ３０ｍｍ、祠質５ＫＤ−１１放電加工速
度は単位時間あたりの加工断面積（加工送り速度と被加
工物厚さの積）で求めた。Processing voltage: 11. OV Processing peak current], OA Capacitor capacity: 1.0μF Wire tension crab s6og Pure water specific resistance: 4X104.3X104゜2×104Ω・
Cm Workpiece: Thickness: 30 mm, abrasive quality: 5KD-11 The electrical discharge machining speed was determined by the machining cross-sectional area per unit time (the product of the machining feed rate and the thickness of the workpiece).
第１表中の値は比較例３による放電加工速度を１とした
ときの相対値で示した。したがって、この値が大きいほ
ど放電加工速度は大きいことになる。The values in Table 1 are shown as relative values when the electric discharge machining speed according to Comparative Example 3 is set to 1. Therefore, the larger this value is, the higher the electrical discharge machining speed is.
また被加工物への付着量は被加工物の加工後の寸法を測
定することによって求めた。すなわち、付着箇所の寸法
と、付着していない箇所の平均寸法との差によって付着
量を評価した。第１表中の値は、比較例３による付着量
を１００としたときの相対値で示した。したがって、値
が小さいほど被加工物への付着量は少ないことになる。The amount of adhesion to the workpiece was determined by measuring the dimensions of the workpiece after processing. That is, the amount of adhesion was evaluated based on the difference between the size of the adhered area and the average size of the unadhered area. The values in Table 1 are relative values when the adhesion amount according to Comparative Example 3 is set as 100. Therefore, the smaller the value, the smaller the amount of adhesion to the workpiece.
電極線の断線状況は被加工物（材質Ｓ ＫＤ−１１、厚
さ３０ｍｍ）を１０ｍｍＸ１０ｍｍ切断加工できるまで
に発生した断線回数を示した。The disconnection status of the electrode wire was determined by the number of disconnections that occurred until the workpiece (material S KD-11, thickness 30 mm) could be cut into a size of 10 mm x 10 mm.
（以下余白）
第１表から明らかなように、この発明に従う実施例１〜
６は、比較例１〜３で示す電極線に比較して、放電加工
速度か向上し、被加工物への付着量も少なく、かつ被加
工物の表面性状も良好であることがわかった。また断線
回数が少なく、高温強度も高いことがわかった。(Hereinafter, blank space) As is clear from Table 1, Examples 1 to 1 according to the present invention
It was found that, compared to the electrode wires shown in Comparative Examples 1 to 3, No. 6 had improved electrical discharge machining speed, less adhesion to the workpiece, and good surface quality of the workpiece. It was also found that the number of disconnections was small and the high temperature strength was high.
（ほか２名）(2 others)
Claims (1)
０〜５０重量％含有するＣｕ合金からなることを特徴と
する、ワイヤ放電加工用電極線。(1) 0.01 to 2% by weight of rare earth oxide, 3% of Zn
An electrode wire for wire electrical discharge machining, characterized in that it is made of a Cu alloy containing 0 to 50% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11675489A JPH02298434A (en) | 1989-05-10 | 1989-05-10 | Electrode wire for wire electric discharge machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11675489A JPH02298434A (en) | 1989-05-10 | 1989-05-10 | Electrode wire for wire electric discharge machining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02298434A true JPH02298434A (en) | 1990-12-10 |
Family
ID=14694918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11675489A Pending JPH02298434A (en) | 1989-05-10 | 1989-05-10 | Electrode wire for wire electric discharge machining |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02298434A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS597526A (en) * | 1982-07-05 | 1984-01-14 | Inoue Japax Res Inc | Electrode material used for wire-cut electric discharge machining |
| JPS60127924A (en) * | 1983-12-13 | 1985-07-08 | Sumitomo Electric Ind Ltd | Electrode wire for wire-cut electric discharge machining and manufacture thereof |
| JPS6386839A (en) * | 1986-09-30 | 1988-04-18 | Fuji Shindo Kk | Electrode wire for wire-cut electric spark machining |
-
1989
- 1989-05-10 JP JP11675489A patent/JPH02298434A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS597526A (en) * | 1982-07-05 | 1984-01-14 | Inoue Japax Res Inc | Electrode material used for wire-cut electric discharge machining |
| JPS60127924A (en) * | 1983-12-13 | 1985-07-08 | Sumitomo Electric Ind Ltd | Electrode wire for wire-cut electric discharge machining and manufacture thereof |
| JPS6386839A (en) * | 1986-09-30 | 1988-04-18 | Fuji Shindo Kk | Electrode wire for wire-cut electric spark machining |
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