JPS6374522A - Electrode material for electric machining - Google Patents
Electrode material for electric machiningInfo
- Publication number
- JPS6374522A JPS6374522A JP21698186A JP21698186A JPS6374522A JP S6374522 A JPS6374522 A JP S6374522A JP 21698186 A JP21698186 A JP 21698186A JP 21698186 A JP21698186 A JP 21698186A JP S6374522 A JPS6374522 A JP S6374522A
- Authority
- JP
- Japan
- Prior art keywords
- graphite
- electrode
- barium
- copper
- present
- 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
- 239000007772 electrode material Substances 0.000 title claims description 22
- 238000003754 machining Methods 0.000 title description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 19
- 239000010439 graphite Substances 0.000 claims abstract description 19
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052788 barium Inorganic materials 0.000 claims abstract description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000010949 copper Substances 0.000 claims abstract description 13
- 229910052802 copper Inorganic materials 0.000 claims abstract description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 4
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 4
- 229910052712 strontium Inorganic materials 0.000 claims abstract description 4
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims abstract description 4
- 230000003746 surface roughness Effects 0.000 abstract description 10
- 239000007770 graphite material Substances 0.000 abstract description 9
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 150000003839 salts Chemical class 0.000 abstract description 4
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 abstract description 3
- 229910001626 barium chloride Inorganic materials 0.000 abstract description 3
- 235000011164 potassium chloride Nutrition 0.000 abstract description 3
- 239000001103 potassium chloride Substances 0.000 abstract description 3
- MPTQRFCYZCXJFQ-UHFFFAOYSA-L copper(II) chloride dihydrate Chemical compound O.O.[Cl-].[Cl-].[Cu+2] MPTQRFCYZCXJFQ-UHFFFAOYSA-L 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 4
- 239000005297 pyrex Substances 0.000 description 4
- 239000003575 carbonaceous material Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 150000002736 metal compounds Chemical class 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000004709 eyebrow Anatomy 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel 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〕
本発明は、グラファイト材を用いた新規な電気加工用電
極材に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a novel electrode material for electrical machining using graphite material.
グラファイト材は、多種及び多数各種電極材等として市
販されているものの他、ホットプレス法、特に通電焼結
法により総型、棒状等の任意の形状に製作された電気加
工用電極材として広く使われているものである。Graphite materials are widely used as electrode materials for electrical machining, which are manufactured into any shape such as a full shape or a rod shape by the hot press method, especially the current sintering method, in addition to being commercially available as a wide variety of electrode materials. It is what is known.
而して、電極材料として普通に使われているグラファイ
ト材は、通常異方性があるもので、例えば鱗片状の結晶
が層状に累積して被着したものであり、引張強さが７０
０ｋｇ／ＣＩ！１２位の強度になっている。Graphite materials that are commonly used as electrode materials are usually anisotropic, and are made up of layers of scale-like crystals, for example, and have a tensile strength of 70%.
0kg/CI! It ranks 12th in strength.
このようにこの種放電加工用のグラフナイト電極は、強
度が強く、抵抗が低く、かつ゛安価かつ大量に提供され
るところにメリットを有するものである。As described above, this type of graphite electrode for electric discharge machining has the advantage of being strong, having low resistance, and being inexpensive and available in large quantities.
然しながら、グラファイト電極は、ポーラスでかつ組織
がもろく軟らかいため、電極の消耗が多く、そのため仕
上面粗さと精度も充分でないと云う問題があった。However, since the graphite electrode is porous and has a brittle and soft structure, there is a problem in that the electrode is frequently worn out, and the finished surface roughness and precision are therefore insufficient.
本発明は叙上の観点に立ってなされたものであり、本発
明の目的とするところは、電極消耗を大幅に減少し、被
加工体の加工面粗さを大幅に向上させることができる電
気加工用電極材を提供することにある。The present invention has been made based on the above-mentioned viewpoints, and an object of the present invention is to provide an electric current that can significantly reduce electrode consumption and significantly improve the machined surface roughness of a workpiece. The purpose of the present invention is to provide electrode materials for processing.
而して、本発明の目的は、グラファイトにバリラム、銅
、鉄、ストロンチウム、ニッケル及びリチウムから成る
群のなかから選ばれた少なくとも一種の金属をその眉間
化合物として重量百分比で０．１〜５％の割合で含浸さ
せることによって達成される。Therefore, the object of the present invention is to add at least one metal selected from the group consisting of barylum, copper, iron, strontium, nickel, and lithium to graphite in an amount of 0.1 to 5% by weight as a compound thereof. This is achieved by impregnation at a ratio of
叙上の如く構成することにより、グラファイトの層間に
含浸された上記金属により電極消耗を大幅に減少させる
ことができ、かつ加工面粗さを大幅に向上し得るもので
ある。By configuring as described above, electrode wear can be significantly reduced by the metal impregnated between the graphite layers, and the machined surface roughness can be significantly improved.
以下、図面により本発明の詳細を具体的に説明する。 Hereinafter, the details of the present invention will be specifically explained with reference to the drawings.
第１図は、本発明に係る電気加工用電極材を製作する方
法の一実施例を示す説明図、第２図は、本発明に係る電
気加工用電極材を製作する方法の他の一実施例を示す説
明図である。FIG. 1 is an explanatory diagram showing one embodiment of the method for producing an electrode material for electrical processing according to the present invention, and FIG. 2 is an explanatory diagram showing another embodiment of the method for producing an electrode material for electrical processing according to the present invention. It is an explanatory diagram showing an example.
第１図中、１は本発明に係る電気加工用電極材であり、
２．２はグラファイト、３．３は１同及びバリウムの上
記グラファイト２．２層間の金属化合物、４は電解槽、
５は塩化銅、塩化バリウム及び塩化カリを混合した溶融
塩、６は銅及びバリウムの電極棒、７は直流電源である
。In FIG. 1, 1 is an electrode material for electrical processing according to the present invention,
2.2 is graphite, 3.3 is a metal compound between the above graphite 2.2 layers of 1 and barium, 4 is an electrolytic cell,
5 is a molten salt mixed with copper chloride, barium chloride, and potassium chloride; 6 is a copper and barium electrode; and 7 is a DC power source.
而して、本発明に係る電気加工用電極材を製造する場合
には、先ず密度１．８２ｇ／ｃｍ３の２６００℃で焼成
したグラファイト材を作る。然る後、上記グラファイト
材を塩化銅と塩化バリウムを５対３の割合で混合し、さ
らにこれに塩化カリを加えた４２０℃の溶融塩５中で常
法により２時間の電解を行なう。これによりグラファイ
ト２．２層間には、銅及びバリウムの金属化合物３．３
が含浸されることとなるものである。本例は電界を加え
た例であるが、単に熔融塩中にグラファイト材を浸漬し
、毛細管現象により抗散含浸させてもよい。When manufacturing the electrode material for electrical processing according to the present invention, first, a graphite material having a density of 1.82 g/cm 3 and fired at 2600° C. is prepared. Thereafter, the graphite material is electrolyzed for 2 hours in a molten salt 5 at 420° C. in which copper chloride and barium chloride are mixed in a ratio of 5:3 and potassium chloride is added thereto by a conventional method. As a result, a metal compound of copper and barium 3.3 is formed between the graphite 2.2 layers.
is to be impregnated. Although this example is an example in which an electric field is applied, it is also possible to simply immerse the graphite material in molten salt and cause anti-dispersion impregnation by capillary action.
即ち、電気加工用電極材１は、鱗片状の結晶が層状に累
積して被着されたその眉間に銅及びバリウムをｆｆ１ｆ
ｆｉ百分比で０．１〜５％の割合で含浸させて成るもの
である。That is, the electrode material 1 for electrical processing is made by depositing copper and barium between the eyebrows, on which scale-like crystals are deposited in layers.
It is impregnated with an fi percentage of 0.1 to 5%.
上記電気加工用電極材１を用いた場合と従来のグラファ
イト材を用いた場合、及び７０対３０の銅カーバイト電
極を用いた場合の電極消耗比Ｅ／）ｌの実験結果に就い
て説明する。We will explain the experimental results of the electrode wear ratio E/)l when using the above electrode material 1 for electrical processing, when using a conventional graphite material, and when using a 70:30 copper carbide electrode. .
１０５Ω国の水中で放電電流Ｉｐ＝１１Ａ、放電時間τ
ｏｎ＝ １１０μｓで加工したときの電極消耗比Ｅ／讐
は、公知のグラファイト電極では１２０％、７０対３０
の銅カーバイト電極では８２％あったのに対し、本発明
の朔バリウムを１．５％層間化合物として含浸させた電
極材では６％と従来の公知の各種電極に比して大幅に向
上して、極めて有効であった。Discharge current Ip = 11A, discharge time τ in water in 105Ω country
The electrode consumption ratio E/V when processing at on = 110 μs is 120%, 70:30, for the known graphite electrode.
While the copper carbide electrode of the present invention had a resistance of 82%, the electrode material impregnated with 1.5% barium as an intercalation compound of the present invention had a resistance of 6%, which was significantly improved compared to various conventional and well-known electrodes. It was extremely effective.
次に、第２図により本発明に係る電気加工用電極材を製
作する他の一実施例に就いて説明する。Next, another embodiment of manufacturing the electrode material for electrical machining according to the present invention will be described with reference to FIG.
第２図中、２１はパイレックス管、２２はバリウム、２
３はグラファイト、２４はレーザ、２５は光学系、２６
はコイルヒータ、２７はその電源、２８は上記パイレッ
クス管２１内を真空状態に保つ真空ポンプである。In Figure 2, 21 is a Pyrex tube, 22 is barium, 2
3 is graphite, 24 is a laser, 25 is an optical system, 26
27 is a coil heater, 27 is its power source, and 28 is a vacuum pump that maintains the inside of the Pyrex tube 21 in a vacuum state.
而して、パイレックス管２１内にはグラファイト２３及
びバリウム２２が挿入されており、パイレックス管２１
内は真空ポンプ２８により１０−５ｍＷ １１［の気圧
状態に保たれ、かつグラファイト２３の挿入された位置
は電源２７及びコイルヒータ２６によす１３００〜１４
００℃に加熱されている。この状態に於いて７２〜１１
０時間、望ましくは約１００時間、パイレックス管２１
内のバリウム２２をレーザ２４及び光学系２５によりレ
ーザ照射した。これによりバリウム２２は蒸発し、その
蒸気２２がグラファイト２３の組織内に侵入する。Graphite 23 and barium 22 are inserted into the Pyrex tube 21.
The interior is maintained at an atmospheric pressure of 10-5 mW 11 [by a vacuum pump 28, and the position where the graphite 23 is inserted is set to 1300-14 by a power supply 27 and a coil heater 26.
It is heated to 00℃. In this state, 72-11
0 hours, preferably about 100 hours, Pyrex tube 21
The barium 22 inside was irradiated with a laser using a laser 24 and an optical system 25. As a result, the barium 22 evaporates and the vapor 22 penetrates into the structure of the graphite 23.
即ち、上記により得られた電極材は、グラファイト層間
にバリウムを０．１〜５％の割合で含浸させたものであ
る。That is, the electrode material obtained above has barium impregnated between the graphite layers at a ratio of 0.1 to 5%.
上記本発明に係る電極材と従来の炭素材と銅電極の場合
の加工面粗さ及び電極消耗比を比較した実験結果に就い
て説明する。Experimental results will be explained in which the machined surface roughness and electrode wear ratio were compared between the electrode material according to the present invention and conventional carbon material and copper electrodes.
１０５Ωｃｍの水にｍｆｆ１比３％のケロシンを混合し
た加工液を用い、放電電流Ｉｐ＝１．６Ａ、放電時間τ
ｏｎ＝ １４０μｓで、２３ステンレスを加工した結果
を対比すると次の如くであった。Using a machining fluid of 105 Ωcm water mixed with 3% mff1 kerosene, discharge current Ip = 1.6A, discharge time τ
A comparison of the results of machining 23 stainless steel with on = 140 μs was as follows.
即ち、本発明の０．８％バリウムを含浸させた電極材で
は、加工面粗さが１．８μＲｍａｘとなり、電極消耗比
Ｅ／Ｗが１．２％であったのに対し、炭素材の場合は、
加工面粗さが８μＲ，ｍａｘ、電極消耗比Ｅ／Ｗが３．
６％となり、銅電極の場合は、加工面粗さが６μＲｍａ
ｘｓ電極消耗比Ｅ／Ｗが４．６％となった。That is, with the electrode material impregnated with 0.8% barium of the present invention, the machined surface roughness was 1.8 μRmax and the electrode wear ratio E/W was 1.2%, whereas in the case of the carbon material teeth,
The machined surface roughness is 8 μR, max, and the electrode wear ratio E/W is 3.
6%, and in the case of copper electrodes, the machined surface roughness is 6μRma
The xs electrode consumption ratio E/W was 4.6%.
又、本発明に係る電極材は通常のグラファイト材の場合
の約１３倍の高い異方性を示すことが知られた。Furthermore, it has been found that the electrode material according to the present invention exhibits anisotropy approximately 13 times higher than that of ordinary graphite material.
尚、本発明は叙上の実施例に限定されるものではない。It should be noted that the present invention is not limited to the embodiments described above.
即ち、例えば、本実施例に於ては、グラファイトに含浸
する金属を銅及び、又はバリウムとしたが、バリウム、
銅、鉄、ストロンチウム、ニッケル及びリチウムから成
る群のなかから選ばれた少なくとも一種の金属であれば
よく、又、製作方法も他の公知方法であってもよく、本
発明はそれらの総てを包摂するものである。That is, for example, in this example, the metal impregnated into graphite was copper and/or barium, but barium,
It may be at least one metal selected from the group consisting of copper, iron, strontium, nickel, and lithium, and the manufacturing method may also be other known methods, and the present invention covers all of them. It is inclusive.
本発明は叙上の如く構成されるから、本発明によるとき
には、グラファイトの層間に含浸された上記金属により
電極消耗を大幅に減少させることができ、かつ加工面粗
さを大幅に向上させることができる電気加工用電極材を
提供し得るものである。Since the present invention is constructed as described above, according to the present invention, electrode wear can be significantly reduced by the metal impregnated between the graphite layers, and machined surface roughness can be significantly improved. Therefore, it is possible to provide an electrode material for electrical processing that can be used.
第１図は、本発明に係る電気加工用電極材を製作する方
法の一実施例を示す説明図、第２図は、本発明に係る電
気加工用電極材を製作する方法の他の一実施例を示す説
明図である。FIG. 1 is an explanatory diagram showing one embodiment of the method for producing an electrode material for electrical processing according to the present invention, and FIG. 2 is an explanatory diagram showing another embodiment of the method for producing an electrode material for electrical processing according to the present invention. It is an explanatory diagram showing an example.
Claims (1)
ッケル及びリチウムから成る群のなかから選ばれた少な
くとも一種の金属を含有させて成る電気加工用電極材。An electrode material for electrical processing comprising graphite containing at least one metal selected from the group consisting of barium, copper, iron, strontium, nickel and lithium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21698186A JPS6374522A (en) | 1986-09-17 | 1986-09-17 | Electrode material for electric machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21698186A JPS6374522A (en) | 1986-09-17 | 1986-09-17 | Electrode material for electric machining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6374522A true JPS6374522A (en) | 1988-04-05 |
Family
ID=16696944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21698186A Pending JPS6374522A (en) | 1986-09-17 | 1986-09-17 | Electrode material for electric machining |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6374522A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8262488B2 (en) | 2007-08-17 | 2012-09-11 | Ntn Corporation | Silicone boot for constant velocity universal joint and constant velocity universal joint |
-
1986
- 1986-09-17 JP JP21698186A patent/JPS6374522A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8262488B2 (en) | 2007-08-17 | 2012-09-11 | Ntn Corporation | Silicone boot for constant velocity universal joint and constant velocity universal joint |
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