JPS6017046A - Wire electrode for wire-cut electric spark machining - Google Patents

Wire electrode for wire-cut electric spark machining

Info

Publication number
JPS6017046A
JPS6017046A JP12261983A JP12261983A JPS6017046A JP S6017046 A JPS6017046 A JP S6017046A JP 12261983 A JP12261983 A JP 12261983A JP 12261983 A JP12261983 A JP 12261983A JP S6017046 A JPS6017046 A JP S6017046A
Authority
JP
Japan
Prior art keywords
wire
electrode
machining
wire electrode
electric spark
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.)
Granted
Application number
JP12261983A
Other languages
Japanese (ja)
Other versions
JPS6330390B2 (en
Inventor
Haruhiko Ito
井藤 治彦
Yoshio Shibata
柴田 美夫
Masato Sakanishi
坂西 正人
Takeshi Yatomi
弥冨 剛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP12261983A priority Critical patent/JPS6017046A/en
Publication of JPS6017046A publication Critical patent/JPS6017046A/en
Publication of JPS6330390B2 publication Critical patent/JPS6330390B2/ja
Granted legal-status Critical Current

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  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

PURPOSE:To obtain a wire electrode for wire-cut electric spark machining causing no sticking of the electrode material during electric spark machining by adding a specified amount of Zn to Mg. CONSTITUTION:This wire electrode for wire-cut electric spark machining consists of >=50wt% Mg and the balance Zn with inevitable impurities. A wire of Cu, brass, W, Mo, Fe or the like may be coated with the Mg-Zn alloy to obtain a wire electrode for wire-cut electric spark machining. The wire electrode causes no sticking of the electrode material during electric spark machining and improves the machining accuracy. It is easily obtd. by continuous cold drawing.

Description

【発明の詳細な説明】 本発明は、ワイヤカット放電加工用ワイヤ電極に関する
ものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wire electrode for wire-cut electrical discharge machining.

従来、一般にワイヤカット放電加工用電極には直径が0
.05〜Q、 3 mの銅、タングステン、モリブデン
、鉄あるいは65〜70重量%(以下チはすべて重゛量
チを意味する。)の銅と、60〜65チの亜鉛からなる
黄銅線が用いられているが、特に銅線や黄銅線は以下に
述べるような欠点を有していることが知られている。
Conventionally, wire-cut electrical discharge machining electrodes generally have a diameter of 0.
.. 05-Q, 3 m of copper, tungsten, molybdenum, iron, or 65-70% by weight copper (hereinafter all references to weight percentages) copper wire and 60-65 cm of zinc are used. However, it is known that copper wire and brass wire in particular have the following drawbacks.

第1図(m)で示されるように、ワイヤ電極(1)が被
加工物(2)を放電加工した際、付着物(3)が加工面
に発生する。同図は、ワイヤ電極(1)を上から下へ送
った場合なので、付着物(3)は入口部に多くなってい
る。この付着状態をさらに詳しく調べると第1図(b)
に示されるように、加工溝(4)を相当埋めている。し
かもワイヤ電極(1)の斜め後方から付着物(3)が多
くなっている。一般に加工エネルギーを増大させて加工
速度を増加させる程、この付着物(3)の量が増し、最
悪時には加工溝(4)を埋め尽くしてしまうことがある
(第1図(a)では上方のみ)。この原因については、
種々の意見があるものの依然として不明であシ、一般的
には、溶融した電極材が飛散したと言われ、溶着現象と
されている。
As shown in FIG. 1(m), when the wire electrode (1) performs electrical discharge machining on the workpiece (2), deposits (3) are generated on the machined surface. The figure shows the case where the wire electrode (1) is fed from the top to the bottom, so the amount of deposits (3) is large at the entrance. If we examine this adhesion state in more detail, we can see Figure 1(b).
As shown, the processed groove (4) is considerably filled. Moreover, there is a large amount of deposits (3) from diagonally rearward of the wire electrode (1). In general, as the machining energy increases and the machining speed increases, the amount of this deposit (3) increases, and in the worst case, the machining groove (4) may be completely filled (in Fig. 1 (a), only the upper part is ). Regarding this cause,
Although there are various opinions, it is still unclear, and it is generally said that the molten electrode material is scattered, and is considered to be a welding phenomenon.

さて、第1図のように電極材の付着物(主に銅)が加工
特性に及ぼす影響を以下に述べることにするう まず、加工精度について言うならば、第1図(b)で示
すように、ワイヤカット放電加工の加工精度は加工溝幅
Sの均一性が大半を占めている。ここで言う均一性とは
、加工中の時間的要因からくるもの及び第1図(a)の
ように上下の真直性からくるものを総称している。そこ
で同図のように、従来から銅の付着が加工エネルギーの
増大とともに増えると、加工溝幅Sは実質的に小さくな
ってし捷い、寸法が極端にばらついてしまう。(7かも
銅の付着については、発煙硝酸のような危険な薬品でな
くては除去不可能のため、実用的に言って致命傷になっ
てくるわけである。
Now, as shown in Fig. 1, the influence of deposits on the electrode material (mainly copper) on the machining characteristics will be described below.First of all, if we talk about machining accuracy, as shown in Fig. 1 (b), Furthermore, the machining accuracy of wire-cut electric discharge machining is largely determined by the uniformity of the machining groove width S. The term "uniformity" as used herein refers to both the time-related factors during processing and the vertical straightness as shown in FIG. 1(a). Therefore, as shown in the figure, when copper adhesion increases with increasing machining energy, the machined groove width S becomes substantially smaller and shrinks, resulting in extreme dimensional variations. (7) Copper deposits cannot be removed without using dangerous chemicals such as fuming nitric acid, so in practical terms this can be fatal.

つぎに加工速度について言うならば、第1図(a)で示
すように、ワイヤカット(1)の入口部(同図では上)
の付着が多いため加工液(5)の流通が円滑に行なわれ
ず、ワイヤ電極(1)は十分に冷却されないだめワイヤ
断線をしばしば生ずる。さらに付着物が加工溝を埋め尽
くす場合は、上部加工液(5)は、加工溝(4)に入っ
ていかな小ため最悪時は気中放電になってワイヤ断線が
多発してし丑う。
Next, regarding the machining speed, as shown in Figure 1 (a), the entrance part of the wire cut (1) (upper part in the figure)
Because of the large amount of adhesion, the processing fluid (5) does not flow smoothly, and the wire electrode (1) is not cooled sufficiently, which often results in wire breakage. Furthermore, if the deposits fill up the machining groove, the upper machining liquid (5) will not enter the machining groove (4), so in the worst case, an air discharge will occur and wire breakage will occur frequently.

このように、従来の銅の付着によシ、加工精度。In this way, the machining accuracy is improved compared to the traditional copper adhesion.

加工速度が損なわれていたわけである。This meant that the machining speed was impaired.

そこで本づろ明者らは、種々の金属により実験を繰り返
した結果、電極月の付着を改善するには、蒸発温度の低
いマグネシウム1粗鉛などの金属を主にすることが有効
であることを究明した。このことは、ワイヤカット放電
加工の初期には銅線であったが、黄銅線に代えられたこ
とからも納得できる。すなわち、■シ鉛は蒸発によりな
くなって、残った銅の溶融したものだけが付着するため
、銅済融量の絶対量が減少したものと考えられる。以」
二の点に着目して本発明考らは蒸発温度の低いマグネシ
ウムや亜鉛の合金を検討しこれをワイヤ形状に製造した
As a result of repeated experiments with various metals, Honzuro Akira and his colleagues found that it is effective to use metals such as magnesium and crude lead, which have low evaporation temperatures, as the main material to improve the adhesion of the electrodes. was investigated. This can be understood from the fact that copper wire was used in the early days of wire-cut electric discharge machining, but it was replaced with brass wire. In other words, it is thought that the absolute amount of molten copper decreased because (1) the lead disappeared through evaporation and only the remaining molten copper adhered. I”
Focusing on the second point, the present invention investigated alloys of magnesium and zinc that have low evaporation temperatures, and manufactured them into wire shapes.

すなわちマグネシウム・と亜鉛は各々融点が約650℃
と約420℃であり沸点が約1100℃と約900℃で
あるため放電加工に対して電極材の付着がなく加工精度
が向上する。
In other words, magnesium and zinc each have a melting point of approximately 650°C.
and about 420°C, and the boiling points are about 1100°C and about 900°C, so there is no adhesion of electrode material during electrical discharge machining, improving machining accuracy.

本発明は上記知兄にもとづいてなされたものであって5
0.0重量%を越えるマグネシウムを含有し残部が亜鉛
と不′ili]避不純物からなる組成を有するワイヤカ
ット放肯;加工用ワイヤ電極を提供するものである。
The present invention was made based on the above-mentioned knowledge, and
The present invention provides a wire electrode for wire cutting, which has a composition containing more than 0.0% by weight of magnesium, with the remainder consisting of zinc and impurities.

また、本発明のワイヤ電極の製造において、マグネシウ
ム(以下Mgと言う)亜鉛(以下Znと言う)の合金溶
湯の溶製に際して、このワイヤ電極中に含有することを
避けることができない不可避不純物として、Pb、F@
、Cd、AI、Smがあるが、Pb : 0.01%、
 Fe :0.02%、 ca : 0.05%、 A
i : 0゜019G、Sn:0.01% まで含有し
ても、本発明のワイヤ電極の特性を何ら損なうものでは
ない。
In addition, in manufacturing the wire electrode of the present invention, when melting a molten alloy of magnesium (hereinafter referred to as Mg) and zinc (hereinafter referred to as Zn), unavoidable impurities that cannot be avoided from being contained in the wire electrode include: Pb, F@
, Cd, AI, and Sm, but Pb: 0.01%,
Fe: 0.02%, ca: 0.05%, A
i: 0°019G, Sn: Even if it is contained up to 0.01%, the characteristics of the wire electrode of the present invention are not impaired in any way.

つぎに、本発明のワイヤ電極を実施例により、比較例と
対比し愈がら説明する。
Next, the wire electrode of the present invention will be briefly explained using examples and in comparison with comparative examples.

1ず、第1表に示す成分□組成のものをワイヤ電極とし
て製造する方法について述べることにする。
1. First, a method for manufacturing a wire electrode having the component □ composition shown in Table 1 will be described.

ただし従来のワイヤ電極の種類の黄銅線については従来
品なので省略する。
However, the brass wire of the conventional wire electrode type is omitted because it is a conventional product.

第 1 表 製造方法としては低周波溝型電気炉を用い、本発明にか
かるMyとZnの合金(A 1 、 & 2 )および
比較用ワイヤ電極(A6)を各々溶製し、連続鋳造法に
より、約400℃の温度で鋳造して直径φ20Q+mx
長さ450簡の寸法をもった鋳塊(計6種類)とし、と
の鋳塊に約250℃の温度で熱間押出しを施して線杆8
闘φの素線とし2、常法により冷間引抜して線径0.2
5 *nφのワイヤ電極とし/こ 。
Table 1 As a manufacturing method, a low-frequency groove-type electric furnace was used to melt the alloys of My and Zn according to the present invention (A 1 , & 2 ) and the wire electrode for comparison (A6), and then cast them by a continuous casting method. , cast at a temperature of about 400°C to have a diameter of φ20Q+mx.
An ingot with a length of 450 rods (6 types in total) was made, and the ingot was hot extruded at a temperature of about 250°C to form a wire rod of 8.
The wire is made into a wire with a diameter of 0.2, and then cold-drawn using a conventional method to obtain a wire with a diameter of 0.2.
5 * Assume nφ wire electrode.

つぎに、第1表を用いて不発明にかかる亜鉛合金による
ワイヤ電極(扁1.茄2)についてその効果を詳細に説
明する。
Next, using Table 1, the effects of the zinc alloy wire electrodes (flat 1. scallop 2) according to the invention will be explained in detail.

第1表は本発明ワイヤ電極(屓1.扁2)の種類比較例
としてM2含有量が本発明の限度外の種類(扁6)なら
びに従来ワイヤ電極として黄銅匈(漸4)について示し
である。加工速度は黄銅線を100%として割合で示し
である。また電極材の付着については、目視による評価
をしである。
Table 1 shows a comparative example of the wire electrode of the present invention (layer 1, layer 2) whose M2 content is outside the limits of the present invention (layer 6), and a conventional wire electrode of brass cylindrical (layer 4). . The processing speed is expressed as a percentage with brass wire as 100%. Also, the adhesion of the electrode material was evaluated visually.

本発明品扁1及び扁2は電極材の刺着が皆無であり従来
の黄@Iil線に比べ15〜20%加工速度が向上する
The flat wires 1 and 2 of the present invention have no sticking of electrode material, and the processing speed is improved by 15 to 20% compared to the conventional yellow @Iil wire.

比較用ワイヤ電極はMgの含有量か40%のものである
がこの場合は、付着や加工速度については不発1.!I
I品ど同程度の効果が得られたが、冷間引抜加工時に断
線が多く連続したワイヤ電極を得るとり・ず@”r f
iif; −C9−v ′t・以上のよりなMPの含有
量が50.0%を越えるZnとの合金は線状に連続した
冷間引抜加工ができ、電極側の付着が皆無でかつ加工速
度が向上する。
The wire electrode for comparison has a Mg content of 40%, but in this case, the adhesion and processing speed were 1. ! I
The same effect as the I product was obtained, but there were many disconnections during cold drawing, and it was difficult to obtain a continuous wire electrode.
iif; -C9-v't. Alloys with Zn containing more than 50.0% of MP can be cold-drawn in a continuous linear manner, and there is no adhesion on the electrode side. Increases speed.

このことはワイヤ電極に限らず型堀用放電加工機用電極
材にこの合金を応用することもできる。またこの合金を
従来のワイヤ電極である銅、黄銅。
This means that this alloy can be applied not only to wire electrodes but also to electrode materials for electrical discharge machines for mold drilling. This alloy is also used in traditional wire electrodes such as copper and brass.

タングステン、モリブデンあるいは鉄等のワイヤに被覆
しても同様の効果を奏する。
A similar effect can be obtained by coating a wire with tungsten, molybdenum, iron, or the like.

上述のように、本発明のMPとZnの合金製ワイヤ電極
はワイヤカット放電加工に際して、効率よく加工が可能
となる故、工業上特に有益であり、その効果は大なるも
のがある。
As mentioned above, the wire electrode made of an alloy of MP and Zn of the present invention enables efficient machining during wire cut electric discharge machining, and is therefore particularly useful industrially, and has great effects.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は従来のワイヤ電極による付着状況を説明する図
ズある。 図中、(1)はワイヤ電極、(2)は被加工物、(3)
は付着物、(4)は加工溝、(5)は加工液である。 代理人 大岩増雄 第1図 手 続 補 正 書(自発) 特許庁長官殿 1、事件の表示 ’11.l’X!昭58−12261
9号2、発明の名称 ワイヤカット放電加工用ワイヤ電極 3、補正をする者 事件との関係 特許出願人 住 所 東京都千代田区丸の内二丁目2番3 ′T3゜
名 称 (601−)三菱電機株式会社代表者片山仁八
部 4、代理人 5、補正の対象 明細書の「発明の詳細な説明」の欄・ 6、補正の内容 (1)明細書第6頁の第1表を次のとりシ補正する。 第1表 以上 230−
FIG. 1 is a diagram illustrating the state of adhesion using a conventional wire electrode. In the figure, (1) is the wire electrode, (2) is the workpiece, and (3)
(4) is the machining groove, and (5) is the machining fluid. Agent Masuo Oiwa Diagram 1 Proceedings Amendment (spontaneous) Mr. Commissioner of the Japan Patent Office 1, Indication of Case '11. l'X! Showa 58-12261
9 No. 2, Name of the invention Wire electrode for wire-cut electrical discharge machining 3, Relationship to the case of the person making the amendment Patent applicant address 2-2-3 Marunouchi, Chiyoda-ku, Tokyo 'T3゜ Name (601-) Mitsubishi Electric Representative Hitoshi Katayama, Co., Ltd., Department 4, Agent 5, Column 6, "Detailed Description of the Invention" of the specification to be amended, Contents of the amendment (1) Table 1 on page 6 of the specification as follows: Correct the difference. Table 1 and above 230-

Claims (2)

【特許請求の範囲】[Claims] (1)マグネシウムの含有量が50.0重量%を越え残
部が亜鉛と不可避不純物からなる組成のワイヤカット放
電加工用ワイヤ電極。
(1) A wire electrode for wire-cut electrical discharge machining having a composition in which the content of magnesium exceeds 50.0% by weight and the remainder consists of zinc and unavoidable impurities.
(2)前記特許請求の範囲第1項記載のマグネシウム−
亜鉛合金を銅、M銅、タングステン、モリブデン及び鉄
等のワイヤに被覆したことを特徴とするワイヤカット放
電加工用ワイヤ電極。
(2) Magnesium according to claim 1
A wire electrode for wire-cut electric discharge machining, characterized in that a wire made of copper, M copper, tungsten, molybdenum, iron, etc. is coated with a zinc alloy.
JP12261983A 1983-07-06 1983-07-06 Wire electrode for wire-cut electric spark machining Granted JPS6017046A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12261983A JPS6017046A (en) 1983-07-06 1983-07-06 Wire electrode for wire-cut electric spark machining

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12261983A JPS6017046A (en) 1983-07-06 1983-07-06 Wire electrode for wire-cut electric spark machining

Publications (2)

Publication Number Publication Date
JPS6017046A true JPS6017046A (en) 1985-01-28
JPS6330390B2 JPS6330390B2 (en) 1988-06-17

Family

ID=14840439

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12261983A Granted JPS6017046A (en) 1983-07-06 1983-07-06 Wire electrode for wire-cut electric spark machining

Country Status (1)

Country Link
JP (1) JPS6017046A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014198254A1 (en) * 2013-06-11 2014-12-18 Heinrich Stamm Gmbh Wire electrode for the electric discharge cutting of objects

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3592310B2 (en) 2001-06-05 2004-11-24 住友電工スチールワイヤー株式会社 Magnesium-based alloy wire and method of manufacturing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014198254A1 (en) * 2013-06-11 2014-12-18 Heinrich Stamm Gmbh Wire electrode for the electric discharge cutting of objects
CN105283262A (en) * 2013-06-11 2016-01-27 海因里希斯塔姆有限责任公司 Wire electrode for the electric discharge cutting of objects

Also Published As

Publication number Publication date
JPS6330390B2 (en) 1988-06-17

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