JPH0366483A - Electrode tip for resistance welding - Google Patents
Electrode tip for resistance weldingInfo
- Publication number
- JPH0366483A JPH0366483A JP1202810A JP20281089A JPH0366483A JP H0366483 A JPH0366483 A JP H0366483A JP 1202810 A JP1202810 A JP 1202810A JP 20281089 A JP20281089 A JP 20281089A JP H0366483 A JPH0366483 A JP H0366483A
- Authority
- JP
- Japan
- Prior art keywords
- electrode tip
- sintered body
- resistance welding
- present
- welding
- 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
- 238000003466 welding Methods 0.000 title claims description 20
- 239000000919 ceramic Substances 0.000 claims abstract description 18
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 11
- 229910003470 tongbaite Inorganic materials 0.000 claims abstract description 11
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 11
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 abstract description 6
- 238000007751 thermal spraying Methods 0.000 abstract description 2
- 230000007812 deficiency Effects 0.000 abstract 1
- 238000005245 sintering Methods 0.000 description 7
- 238000000465 moulding Methods 0.000 description 6
- 238000000576 coating method Methods 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- VWZIXVXBCBBRGP-UHFFFAOYSA-N boron;zirconium Chemical compound B#[Zr]#B VWZIXVXBCBBRGP-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- 229910001335 Galvanized steel Inorganic materials 0.000 description 2
- 229910007948 ZrB2 Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000008397 galvanized steel Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910033181 TiB2 Inorganic materials 0.000 description 1
- 239000006061 abrasive grain Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- YXTPWUNVHCYOSP-UHFFFAOYSA-N bis($l^{2}-silanylidene)molybdenum Chemical compound [Si]=[Mo]=[Si] YXTPWUNVHCYOSP-UHFFFAOYSA-N 0.000 description 1
- 239000011195 cermet Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 229910021344 molybdenum silicide Inorganic materials 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000001272 pressureless sintering Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Landscapes
- Ceramic Products (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、抵抗溶接用電極チップに関するものである。[Detailed description of the invention] [Industrial application field] The present invention relates to an electrode tip for resistance welding.
抵抗溶接、中でもスポット溶接は、薄板の溶接として、
自動車、車輛、家電製品、事務機器などに最も多用され
ている。Resistance welding, especially spot welding, is used to weld thin plates.
It is most commonly used in automobiles, vehicles, home appliances, office equipment, etc.
従来、スポット溶接用電極チップ材料としては、Ｃｒ−
Ｃｕ ％ Ａｊ２０３−Ｃｕ等が使用されている。’ｔ
−ｈ、電極チップ表向にＺｒＢ２ 、ＴｉＢ２のセラミ
ックスの溶射皮ｙ＆を形成させることも試みられている
・（特開昭６１−８２９８３号公報）。Conventionally, Cr-
Cu % Aj203-Cu and the like are used. 't
An attempt has also been made to form a sprayed coating of ZrB2 or TiB2 ceramics on the surface of the electrode chip (Japanese Patent Application Laid-open No. 82983/1983).
しかしながら、Ｃｕを成分として含む電極チップを用い
て、亜鉛メツキ鋼板のスポット溶接を行う場合、反応又
は付着を起こして電極チップの損耗が激しく溶接効率が
著しく低下するという問題がある。また、溶射によって
セラミックス皮膜を電極チップ表面に形Ｍ、させたもの
にあっては、皮膜の緻密性、耐熱衝撃性、耐衝撃性に問
題がある。However, when performing spot welding of galvanized steel sheets using an electrode tip containing Cu as a component, there is a problem in that reactions or adhesion occur, causing severe wear and tear on the electrode tip and significantly reducing welding efficiency. Further, in the case where a ceramic film is formed into a shape M on the surface of an electrode chip by thermal spraying, there are problems with the denseness, thermal shock resistance, and impact resistance of the film.
本発明らは、これらの問題点を解決すべく種々検討した
結果、電極チップ材質として、炭化クロム質及び／又は
ホウ化ジルコニウム質のセラミックス焼結体を用いれば
よいことを見い出し、本発明を完成したものである。As a result of various studies to solve these problems, the present inventors discovered that it is sufficient to use a ceramic sintered body of chromium carbide and/or zirconium boride as the electrode tip material, and completed the present invention. This is what I did.
すなわち、本発明は、被溶接材と接する部分を炭化クロ
ム質及び／又はホウ化ジルコニウム質のセラミックス焼
結体で構成してなることｔ−特徴とする抵抗溶接用電極
チップである。That is, the present invention is an electrode tip for resistance welding characterized in that the portion in contact with the material to be welded is constituted by a ceramic sintered body of chromium carbide and/or zirconium boride.
以下、さらに詳しく本発明について説明すると、本発明
は、特開昭６１−８２９８３号公報に開示されているセ
ラミックスの溶射皮膜を形成させる電極チップの改良に
係るものであって、その溶射皮膜のかわ夕に炭化クロム
質及び／又はホウ化ジルコニウム質のセラミックス焼結
体を用いることを主たる管機とするものである。それに
よって、溶射皮膜法による皮膜の緻密性や耐（熱）衝撃
性等の不十分さからくる電極チップの割れを著しく改善
することができるものである。The present invention will be described in more detail below.The present invention relates to an improvement of an electrode tip for forming a ceramic sprayed coating, which is disclosed in Japanese Patent Application Laid-Open No. 61-82983. The main pipe machine uses ceramic sintered bodies made of chromium carbide and/or zirconium boride. Thereby, it is possible to significantly improve the cracking of the electrode tip due to insufficient denseness, (thermal) shock resistance, etc. of the coating formed by the thermal spray coating method.
本発明は、電極チップのうち、被溶接材と接すような材
料で構成する必要はない。また、本発明では、被溶接材
と接する部分の全てを本発明に係るセラミックス焼結体
で構成することもできるし、さらにはその表面のみを本
発明に係る材料とし、その内部にＣｒ−Ｃｕ 、 ＡＪ
ｒ０３−Ｃｕ等の電気伝導性の良好な材料を用いて一体
化した構造とすることもできる。In the present invention, the electrode tip does not need to be made of a material that comes into contact with the material to be welded. In addition, in the present invention, the entire part that comes into contact with the material to be welded can be made of the ceramic sintered body according to the present invention, or furthermore, only the surface thereof can be made of the material according to the present invention, and the inside is made of Cr-Cu. , A.J.
It is also possible to form an integrated structure using a material with good electrical conductivity such as r03-Cu.
本発明に係るセラミックス焼結体は、炭化クロム及び／
又はホウ化ジルコニウムの粉末を成形し焼結することに
よって得ることができるが、それらは難焼結性であるか
又は粒成長が起こりやすいので、通常は、内削で１〜２
０１ｍｔＬｌｂ好ましくは５〜１５３１−Ｊ１％程度の
焼結助剤を使用する。炭化クロムの焼結助剤としては、
Ｚｒ Ｂ２、ＡｊＮ％ＳｉＣ。The ceramic sintered body according to the present invention includes chromium carbide and/or
Alternatively, it can be obtained by molding and sintering zirconium boride powder, but since they are difficult to sinter or grain growth is likely to occur, usually 1 to 2
01mtLlb Preferably, about 5 to 1531-J1% of the sintering aid is used. As a sintering aid for chromium carbide,
Zr B2, AjN%SiC.
ＴｌＣ等、また、ホウ化ジルコニウムのそれとしては、
ＭＯＳｉ２、ＳｉＣ％０ｒ５Ｇ２等が使用される。また
、いずれの場合にも、サーメットのように金属粉末を焼
結助剤として用しることもできる・上記出発原料粉末の
好ましい平均粒子径は１０μｍ以下であり、それらの所
定量を乾式法又は湿式法によ夕混合する・得られた混合
粉末は所望形状に成形され焼結される。成形法としては
、金型プレス成形、Ｃ工Ｐ成形、スリップ成形、射出成
形などが採用される。大型又は複雑形状で保形が困難な
ときには、ポリビニルアルコール、ワックス、パラフィ
ン等のバインダーを添加して成形することもある。焼結
法としては、常圧焼結、ホットプレス焼結、Ｈ工Ｐ焼結
などが採用される。焼成温度は、炭化クロム質の場合は
１，４００〜１．６５０°０であシ、ホウ化ジルコニウ
ム質の場合は１，８００〜２．１００℃である。焼成雰
囲気としては、真空下又は還元雰囲気下である。密度は
、相対密度で９０％以上であることが望ましい。また、
本発明に係るセラミックス焼結体には、鋼、クロム、タ
ングステン等の金Ｉｊ４を複合させることも可能である
。TlC, etc., and that of zirconium boride,
MOSi2, SiC%0r5G2, etc. are used. In any case, a metal powder such as cermet can also be used as a sintering aid. The preferred average particle diameter of the starting material powder is 10 μm or less, and a predetermined amount of it is sintered using a dry method or a wet method. The mixed powder obtained is shaped into a desired shape and sintered. As the molding method, die press molding, C/P molding, slip molding, injection molding, etc. are adopted. When it is difficult to maintain the shape due to large size or complicated shape, a binder such as polyvinyl alcohol, wax, paraffin, etc. may be added and molded. As the sintering method, pressureless sintering, hot press sintering, H-type sintering, etc. are adopted. The firing temperature is 1,400 to 1.650°C for chromium carbide, and 1,800 to 2.100°C for zirconium boride. The firing atmosphere is a vacuum or a reducing atmosphere. The density is preferably 90% or more in terms of relative density. Also,
The ceramic sintered body according to the present invention can also be composited with gold Ij4 such as steel, chromium, and tungsten.
以上のようにして得られた本発明に係るセラミックス焼
結体は、研削後、必要に応じてダイヤモンド砥粒等によ
り研磨し所望形状に加工して電極チップとするが、射出
成形法ではこのような研削加工は余り必要でない。After grinding, the ceramic sintered body according to the present invention obtained as described above is processed into a desired shape by polishing with diamond abrasive grains, etc. as necessary, to form an electrode tip. Grinding is not necessary.
本発明の電極チップは、以上説明したようなスポット溶
接のほかに他の抵抗溶接法であるグロジエクション溶接
、シーＡｌｌ接、ＴＩＧ −７−り・スポット溶接、ス
タッド溶接、バット・アプセット溶接、フラツシエ溶接
、高周波抵抗溶接等に用いる？：、４！：ができる。In addition to spot welding as explained above, the electrode tip of the present invention can be used for other resistance welding methods such as grosgeection welding, sea-all welding, TIG-7 spot welding, stud welding, butt upset welding, Is it used for flatsier welding, high frequency resistance welding, etc.? :, 4! : Can be done.
以下、実施例と比較例をあげてさらに具体的に説明する
。Hereinafter, a more specific explanation will be given with reference to Examples and Comparative Examples.
実施例１〜３ 比較例１〜３
平均粒子径が２〜３μ瓜であるホウ化ジルコニウム（Ｚ
ｒＢ２）、炭化クロム（Ｃｒ３０２）、炭化ケイ素（Ｓ
ｉＣ）及びケイ化モリブデン（Ｍｏｓ１２） ｆ：用い
て、ホウ化ジルコニウム質、炭化クロム質、ホウ化ジル
コニウム（１０）−炭化クロム（９０）質のセラミック
ス焼結体をそれぞれ製造した。Examples 1 to 3 Comparative Examples 1 to 3 Zirconium boride (Z
rB2), chromium carbide (Cr302), silicon carbide (S
iC) and molybdenum silicide (Mos12) f: zirconium boride, chromium carbide, and zirconium boride (10)-chromium carbide (90) ceramic sintered bodies were manufactured, respectively.
Ｚ ｒＢ２質セラミックス焼結体は、ＭＯ８ｉｇを１０
重量係内側配合しボールミル混合後、ＣＩＰＭ、形（２
，７ｔ、ｏｎ ／ ａｍ” ｓ Ｓ分間）Ｌｌ、９００
°ＯＸ３時間真空中で焼成して製造した・
Ｃｒ ３０２質セラミックス焼結体は、ＳｉＣ１［１重
量傷内割配合した混合原料粉末を用い、同様にしてＣ工
Ｐ成形後、１．６００℃×３時間真空中で焼成して製造
した・
’ｔ タ、ＺｒＢ２ （１０） −Ｃｒ３Ｃｇ （９０
）質セラミックス焼結体は、ＺｒＢ２１０重′Ｉｋ％、
Ｃｒ３Ｃ２９０重量優の混合原料粉末を用い、同様にし
てＣ工Ｐ成形後、１．６００℃×３時間真空中で焼成し
て製造した。Z rB2 quality ceramic sintered body has MO8ig of 10
After mixing on the inside by weight and mixing in a ball mill, CIPM, shape (2
,7t,on/am''s S minutes)Ll,900
The Cr 302 quality ceramic sintered body was produced by firing in a vacuum for 3 hours at 0°C. ZrB2 (10) -Cr3Cg (90
) quality ceramic sintered body is ZrB210wt'Ik%,
Using a mixed raw material powder of Cr3C290 weight, it was manufactured in the same manner by molding C-P and firing in vacuum at 1.600°C for 3 hours.
以上のようにして得られたセラミックス焼結体を加工し
て市販のポータプルスポット溶接機Ｃ）先端電極チップ
（φ１６鵡）として組み込み、電圧２０ｖ１最大電流１
５，０００Ａ％加圧力４００時ｆの条件で亜鉛メツキ鋼
板（電気メツキｔ −０，８ＷＳ）のスポット溶接を行
い、従来材であるＣｒ−Ｃｕ製及びＣｒ−Ｃｕ Ｋ Ｚ
ｒＢ２ ｔ−溶射皮膜法で形成させてなる電極チップと
打点可能回数を比較した。The ceramic sintered body obtained as described above was processed and incorporated into a commercially available porta-pull spot welding machine as a tip electrode tip (φ16), and the voltage was 20v1 and the maximum current was 1.
Spot welding of galvanized steel sheets (electroplated t-0,8WS) was carried out under the conditions of 5,000A% pressurizing force of 400 hours f, and welded the conventional materials Cr-Cu and Cr-Cu K Z.
The possible number of dots was compared with an electrode tip formed by rB2 t-sprayed coating method.
その結果を表−１に示す。The results are shown in Table-1.
本発明の抵抗溶接用を極チップを用いることにより、使
用寿命を著しく延長させることができる。By using the pole tip for resistance welding of the present invention, the service life can be significantly extended.
Claims (1)
ホウ化ジルコニウム質のセラミツクス焼結体で構成して
なることを特徴とする抵抗溶接用電極チツプ。1. 1. An electrode tip for resistance welding, characterized in that a portion in contact with a material to be welded is made of a ceramic sintered body of chromium carbide and/or zirconium boride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1202810A JPH0366483A (en) | 1989-08-07 | 1989-08-07 | Electrode tip for resistance welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1202810A JPH0366483A (en) | 1989-08-07 | 1989-08-07 | Electrode tip for resistance welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0366483A true JPH0366483A (en) | 1991-03-22 |
Family
ID=16463579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1202810A Pending JPH0366483A (en) | 1989-08-07 | 1989-08-07 | Electrode tip for resistance welding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0366483A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6396405B1 (en) | 1993-08-19 | 2002-05-28 | General Electric Corporation | Automatic verification of smoke detector operation within calibration limits |
| JPWO2006057052A1 (en) * | 2004-11-29 | 2008-06-05 | 三菱電機株式会社 | Resistance welding electrode, welding resistance electrode manufacturing method, resistance welding apparatus, resistance welding line |
| JP2015014036A (en) * | 2013-07-06 | 2015-01-22 | 日本タングステン株式会社 | Resistance welding electrode |
| JP2017006972A (en) * | 2015-06-25 | 2017-01-12 | 京セラ株式会社 | Tip member for spot welding |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63199892A (en) * | 1987-02-12 | 1988-08-18 | Kubota Ltd | Current roll for electroplating |
| JPH01266975A (en) * | 1988-04-19 | 1989-10-24 | Nippon Steel Corp | Electrode for resistance welding |
-
1989
- 1989-08-07 JP JP1202810A patent/JPH0366483A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63199892A (en) * | 1987-02-12 | 1988-08-18 | Kubota Ltd | Current roll for electroplating |
| JPH01266975A (en) * | 1988-04-19 | 1989-10-24 | Nippon Steel Corp | Electrode for resistance welding |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6396405B1 (en) | 1993-08-19 | 2002-05-28 | General Electric Corporation | Automatic verification of smoke detector operation within calibration limits |
| JPWO2006057052A1 (en) * | 2004-11-29 | 2008-06-05 | 三菱電機株式会社 | Resistance welding electrode, welding resistance electrode manufacturing method, resistance welding apparatus, resistance welding line |
| JP4575924B2 (en) * | 2004-11-29 | 2010-11-04 | 三菱電機株式会社 | Resistance welding electrode, welding resistance electrode manufacturing method, resistance welding apparatus, resistance welding line |
| JP2015014036A (en) * | 2013-07-06 | 2015-01-22 | 日本タングステン株式会社 | Resistance welding electrode |
| JP2017006972A (en) * | 2015-06-25 | 2017-01-12 | 京セラ株式会社 | Tip member for spot welding |
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