WO2006004073A1 - Électrode pour soudage par points - Google Patents

Électrode pour soudage par points Download PDF

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Publication number
WO2006004073A1
WO2006004073A1 PCT/JP2005/012281 JP2005012281W WO2006004073A1 WO 2006004073 A1 WO2006004073 A1 WO 2006004073A1 JP 2005012281 W JP2005012281 W JP 2005012281W WO 2006004073 A1 WO2006004073 A1 WO 2006004073A1
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WO
WIPO (PCT)
Prior art keywords
electrode
alloy
spot welding
core material
welding
Prior art date
Application number
PCT/JP2005/012281
Other languages
English (en)
Japanese (ja)
Inventor
Jun Kurobe
Hiroshi Asada
Shigeo Matsubara
Shuichi Teramoto
Shingo Mukae
Shigeya Sakaguchi
Shigeru Matsuo
Original Assignee
Nisshin Steel Co., Ltd.
Nippon Tungsten Co., Ltd.
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
Priority claimed from JP2004192694A external-priority patent/JP5083930B2/ja
Priority claimed from JP2004282463A external-priority patent/JP4683890B2/ja
Priority claimed from JP2004292990A external-priority patent/JP4683896B2/ja
Application filed by Nisshin Steel Co., Ltd., Nippon Tungsten Co., Ltd. filed Critical Nisshin Steel Co., Ltd.
Publication of WO2006004073A1 publication Critical patent/WO2006004073A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/30—Features relating to electrodes
    • B23K11/3009—Pressure electrodes

Definitions

  • the present invention relates to an electrode suitable for spot welding of difficult-to-weld materials such as plated steel sheets and aluminum materials.
  • spot welding electrodes are made of copper alloys such as Cu-Cr and Cu-Cr-Zr, and steel materials in which hard particles such as A1203 are dispersed.
  • Cu-Cr alloys are often used with comprehensive consideration of strength and cost.
  • zinc-plated steel plates such as zinc plating and zinc alloy plating are increasingly used as materials for automobiles and home appliances to improve durability. Compared with spot welding of cold-rolled steel sheets, a higher current flows in spot welding of zinc-based plated steel sheets, so that the electrode tip is exposed to more severe conditions.
  • the plating layer components such as Zn and A1 as well as the base metal component such as Fe alloy with the main component Cu of the electrode to form an alloy reaction with Cu-Zn and Cu-Zn-Al- Intermetallic compounds such as Fe are formed.
  • the produced intermetallic compound is very brittle and peels off by the pressure applied during welding, resulting in an increase in the electrode tip diameter and a decrease in current density.
  • the disadvantage of welding plated steel sheets is that the electrode life is shorter than when welding cold-rolled steel sheets such as plain steel and stainless steel.
  • Aluminum material is sometimes used to reduce weight, but in this case assembling
  • the welding line enters the welding line.
  • Aluminum material is a difficult-to-weld material with high thermal conductivity, and it is difficult to maintain the molten state necessary for joining. Therefore, it is necessary to make the molten state with a rapid temperature rise, pressurize at once, and perform spot welding. For rapid temperature rise, it is necessary to increase the welding current. If the temperature rises excessively as the welding current increases, oxides and intermetallic compounds are generated as a result of the chemical reaction between the electrode material Z and the workpiece. In addition, A1 is easily welded to the electrode. Similar welding can be seen in spot welding of A1 plated steel sheets.
  • W-Mo alloys and W-Mo alloy electrodes added with various doping materials, and double-structured electrodes with a core material embedded in the center of the electrode tip have been proposed. Yes.
  • a welding electrode made of a W-Mo alloy containing 10 to 10 ppm of K in the form of oxide, nitride, simple metal, carbide, boride, etc. is disclosed in Japanese Patent Application Laid-Open No. 10-291078.
  • Nitrides, simple metals, carbides, borides, etc., rare earth elements such as La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Y, etc.
  • a welding electrode produced from a W-Mo alloy containing 10.0% by mass is introduced in JP-A-10-314957.
  • the electrode body is made of a high-strength, high-conductivity copper alloy, and alloyed with the welded material at 20 to 70% by area on the contact surface where the welded material hits.
  • a composite material such as A1 2 0 3 dispersed copper alloy that is difficult to weld is embedded.
  • the ratio of the core material to the contact surface is small, Cu or Cu alloy around the core material is easily diffused and alloyed with the plated metal, and the electrode tip diameter is easily increased. Since the core material is also made of a copper alloy, it is difficult to avoid alloying with plated metal even if the core material occupies a large proportion of the contact surface.
  • the welding electrode disclosed in Japanese Patent Laid-Open No. 4-4984 is a welded body of an electrode body made of Cu or Cu alloy.
  • the core material made of W or Mo which has excellent electrical and thermal conductivity and higher strength than the electrode body, is embedded in the surface where the material comes into contact at 5 to 20 area%.
  • W and Mo are materials that are difficult to wet with the plated metal.
  • the tip diameter of the electrode as a whole tends to increase.
  • Japanese Unexamined Patent Publication No. 64-62287 discloses a welding electrode having a double structure comprising an outer peripheral portion made of highly conductive Cu or Cu_Cr alloy and a central portion made of non-conductive material such as ceramics. Has proposed. However, if the ceramic used for the core material is brittle, the nugget formation becomes unstable due to easy peeling due to cracking when the electrode is pressed.
  • Japanese Examined Patent Publication No. 59-41838 introduces an electrode in which a chip composed of a sintered body of W, W alloy, Mo, Mo alloy is fitted to a retaining ring, but has high strength and toughness precipitation hardening.
  • Type stainless steel is used for the retaining ring, and the electrical conductivity of the retaining ring is poor. Moreover, the manufacturing cost of the electrodes themselves is increasing. Disclosure of the invention
  • the present inventors investigated and examined various effects of W and Mo embedded in the contact surface of the welding electrode in contact with the material to be welded having a large effect on the diffusion reaction and alloying reaction during spot welding. As a result, we found that diffusion and alloying reactions can be effectively suppressed when a W or Mo core material is embedded in the contact surface of the welding electrode with a large area ratio.
  • the present invention has been completed based on such knowledge, and zinc-plated steel sheets such as Zn-Al and Zn-Al-Mg, aluminum-based plated steel sheets, and aluminum materials are spot-welded at a high current.
  • an object of the present invention is to provide a spot welding electrode capable of spot welding under stable conditions over a long period of time.
  • the present invention is an electrode for spot welding in which a core material made of W, W alloy, Mo or Mo alloy is embedded in a contact surface that contacts a workpiece of an electrode body made of Cu or Cu alloy,
  • the area ratio of the core material to the area is set in the range of 0.7 to 3.0.
  • a dispersion strengthened material in which at least one kind of fine particles selected from oxides, nitrides, carbides and borides of group elements, group 6A elements or rare earth elements are dispersed can be used. Specifically, one or more fine particles selected from oxides of Be, Mg, Ca, Sr, Ti, Zr, Y, and Ce were dispersed in W, W alloy, Mo, or Mo alloy.
  • a core material is made of a composite material. The dispersion ratio of the fine particles is selected in the range of 0.5 to 10% by volume, and further, fine particles having an average particle diameter of 2 ⁇ or less are preferably dispersed.
  • the electrode body is made of Cu or a Cu alloy, and a core material made of W, W alloy, Mo or Mo alloy is provided on the contact surface of the electrode body that contacts the material to be welded. Embedded. By setting the area ratio of the core material to the contact surface to 0.7 to 3.0, the contact area between the electrode body made of Cu or Cu alloy, which is easily alloyed with the plating metal, and the material to be welded is reduced.
  • FIG. 1 is a diagram schematically illustrating the structure of the spot welding electrode of the present invention.
  • Fig. 2 is a graph showing the relationship between the area ratio of the contact surface and electrode life of the electrode for spot welding used in Example 1.
  • the inventors of the present invention have repeatedly studied various kinds of experiments regarding the material shape of the electrode when spot welding a zinc-based steel sheet. .
  • the electrode life was investigated by spot-welding zinc-based steel sheets using welding electrodes with various changes in the size of the electrode constituent material and the core and surrounding materials.
  • the material of the core material is preferably a hard material such as W or Mo that is difficult to alloy with the plating metal.
  • the diameter of the core material is changed variously, and the contact status of the pure Cu surrounding material to the welded material.
  • the difference that is, the relationship between the area ratio of the core Z contact surface and the electrode life was investigated. Since Mo is a metal that behaves almost the same as W, the results obtained with W can be applied to Mo, W alloys, and Mo alloys.
  • the welding conditions were such that the initial nugget diameter for continuous spot welding, that is, the nugget diameter at the first spot was the same for all electrodes.
  • the area of the contact surface So a 2 4
  • Si JTB 2 4
  • the tip of the electrode including the core material 3 is ground, and only the core material 3 is present on the contact surface 2a. This means that the tip shape is adjusted.
  • W, W alloy, Mo or Mo alloy has a lower alloying reactivity to the plating metal than Cu. Therefore, when the diameter b of the core 3 is larger than the diameter a of the contact surface 2a, the Cu surrounding material 2 An alloying reaction occurs between Cu and the metal with no contact with the metal. I don't know. Area of SiZSo ⁇ 0.7 If Si core material 3 is used, the surrounding material 2 makes little contact with the metal, but due to the small contact area, deformation due to alloying of the surrounding material 2 with the metal causes an increase in diameter. The tip shape of the electrode as a whole is not deformed.
  • the area ratio SiZ So is preferably in the range of 1.0 to 2.0.
  • the double structure in which the core material made of W, W alloy, Mo or Mo alloy is surrounded by the electrode body made of Cu or Cu alloy also prevents cracking and peeling that tends to occur on the contact surface of the welding electrode. It is valid.
  • the contact surface of the welding electrode generates heat at the time of spot welding and thermally expands around the contact surface, but the thermal expansion is in the vicinity of the contact surface because the temperature change is rapid and the thermal conductivity of W and Mo is low.
  • the thermal expansion does not occur in the vicinity of the outer periphery where heat is not easily transmitted.
  • Thermal expansion that differs between the contact surface and the outer periphery is the cause of the generation of thermal stress, and as a result, it induces cracks and separation near the contact surface. Defects caused by this difference in thermal expansion are prevented by making the contact body and its surroundings W or Mo, which are high melting point materials, and making the electrode body with Cu or Cu alloy with good thermal conductivity. it can.
  • an electrode made of an electric current sintered body of W an electrode made of W in which about 10 to 200 ppm of K (power lium) is doped in the form of oxide, nitride, metal K, carbide or boride is often used. Yes.
  • the W core material is also used in the sense of including a K-type electric current sintered body.
  • W and Mo used as the core material also have a low alloying reactivity with metal plating compared to Cu alloys, but it is not completely absent.
  • W and Mo are hard, there are also disadvantages such as cracking due to impact during pressurization, and so on. Therefore, IW alloy, Mo or Mo improved so as to have low alloying reactivity with plating metal and excellent impact resistance.
  • IW alloy, Mo or Mo improved so as to have low alloying reactivity with plating metal and excellent impact resistance.
  • Improvement measures include: Group 2A elements such as Be, Mg, Ca and Sr; Group 4A elements such as Ti, Zr and Hf; Group 5A elements such as V, Nb and Ta; Group 6A elements such as Cr, Mo and W Alternatively, it is preferable to disperse at least one kind of fine particles selected from oxides, nitrides, carbides and borides of rare earth elements containing Y in a ratio of 0.5 to 10% by volume.
  • the fine particle dispersion is also effective in suppressing fine cracks that tend to occur on the contact surface and in the vicinity of the contact surface. Since these fine particles have poor reactivity with A1 and Zn, the metal attached to the core W or Mo is difficult to wet during spot welding, and the alloying reaction between W or Mo and the metal attached is suppressed. .
  • MgO produced during spot welding accumulates at the electrode tip, increasing the resistance between the electrode and the plated steel sheet.
  • W or Mo electrodes in which fine particles are dispersed MgO adhesion and deposition can be suppressed, so that welding conditions are stabilized over a long period of time.
  • oxides such as Be, Mg, Ca, Sr, Ti, Zr, Y, and Ce have a standard free energy of formation lower than or equal to that of MgO, so spot the Zn-Al-Mg alloy steel plate.
  • Mg contained in the molten or semi-molten plating layer is not oxidized by the reduction reaction of the metal oxide.
  • the formation and deposition of MgO is suppressed, and the core material made of W, W alloy, Mo or Mo alloy is hardly wetted by the molten plated metal, and the welding of the plated metal is surely suppressed.
  • La203, BeO, SrO, Ce02, Ce203, Zr02, MgO, CaO, Y2O3, TiC, WC, TaC, ZrC, HfC, ZrB2, ZrN, TiN, etc. have a high melting point and react with the plating metal. Due to its particularly low property, the strength of the sintered body can be maintained even when dispersed in W or Mo, and it is suitable for extending the life of the electrode. Furthermore, the fine particles dispersed in W, W alloy, Mo or Mo alloy exert the effect of pinning the propagation of dislocations when the core material is impacted, resulting in excellent impact resistance and cracking. Control the occurrence of In particular, fine particles with a melting point of over 2400 ° C do not melt or segregate during the sintering of the core material, thus improving the quality stability of the core material. It is also effective in
  • the fine particles are disperse by 0.5% by volume or more.
  • excessive dispersion exceeding 10% by volume greatly reduces the electrical conductivity of W, W alloy, Mo or Mo alloy, and during resistance welding.
  • the temperature at the tip of the electrode becomes too high, and on the contrary, an alloying reaction is likely to occur.
  • the fine particles are dispersed in the range of 0.8 to 3.0% by volume.
  • the non-metallic fine particles such as CeC> 2 contained in W or Mo preferably have a particle size of ⁇ or less. If particles larger than ⁇ ⁇ ⁇ are dispersed, they tend to break down due to the difference in thermal expansion coefficient. Considering the action of fine particles that stop the propagation of cracks, the larger the number of fine particles, the more effective even with the same amount of dispersion. When the average particle size exceeds ⁇ or the amount of dispersion is less than 0.5% by volume, the property improvement by fine particle dispersion is not sufficient. In particular, in order to improve the electrode life, a fine particle dispersion having an average particle diameter of 2 ⁇ or less is suitable.
  • W or Mo for the core material is used as each metal alone or as an alloy of 5 to 95 mass%.
  • W, W alloy, Mo or Mo alloy is manufactured by sintering method.
  • the W, W alloy, Mo or Mo alloy used as the core material in the present invention is also manufactured by a sintering method as usual.
  • the sintering raw material is not limited to pure W that does not contain impurities, but can also be doped tungsten containing about 10 to 200 ppm K, which is used for filament electrodes, etc., and a small amount of metal such as Re is alloyed.
  • a W-based alloy may be used.
  • oxide powder of W and / or Mo with addition of fine particles of 2A group element, 4A group element, 5A group element, 6A group element, rare earth element oxide, nitride, carbide, boride as required
  • the obtained powder is formed into an appropriate shape, pre-sintered and electro-sintered, and then subjected to swaging and centerless polishing to obtain a rod having a desired diameter.
  • metal W and / or metal Mo powder may be used as a raw material, and if necessary, fine particles may be added and molded as it is.
  • a powder raw material having a predetermined composition is cold isostatically pressed into a cylindrical shape, and then subjected to current sintering in a hydrogen atmosphere.
  • the obtained sintered body is hot-rotated forged, then cut and processed.
  • a method of forming a core material having a predetermined shape may be used.
  • the powder raw material filled in the sealed container can be cold isostatically pressed, sintered in a hydrogen atmosphere, and further sintered into a sintered body by hot isostatic pressing.
  • the surrounding material is made of ordinary Cu or Cu alloy such as commercially available pure Cu, Cu-Cr alloy, Cu-Cr-Zr alloy. Furthermore, a dispersion strengthened Cu alloy in which fine particles such as AI2O3 are dispersed can be used as the surrounding material.
  • the core material may be press-fitted into the hole formed in the surrounding material, or may be inserted through the brazing material.
  • shrink fitting may be used, or cold forging may be performed after the core material is wrapped with steel.
  • An adhesion amount per side 30 gZm 2 and a Zn-Al-Mg alloy-plated steel sheet with a thickness of 0.7 mm provided with a Zn-6% Al-3% Mg alloy-plated layer was used as the material to be welded.
  • the two welded materials were overlapped, and the Zn-Al-Mg alloy-plated steel sheet was welded by spot welding, which was sandwiched between the upper and lower electrodes under the conditions shown in Table 1 and continuously dotted.
  • the spot welding electrode we used a double-structured electrode in which a core material that had been swept and centerless polished after being sintered with current of 99.95% pure W powder was embedded in pure Cu surrounding material.
  • the welding electrode is a DR type with an abutment surface diameter of 6 mm and an overall diameter of 16 mm.
  • An arc with a radius of curvature of 40 mm is placed on the abutment surface diameter of 6 mm, and an arc with a radius of curvature of 8 mm on the other side. It is attached to the part.
  • Table 1 Continuous dot test
  • the nugget diameter formed by spot welding was measured, and the life of the electrode was determined by assuming that the nugget diameter was less than 4 ⁇ 3.35 (t: plate thickness) as poor welding.
  • the area ratio between the core material and the contact surface SiZSo is 0.7 to 3.0, and the W core material is embedded in the electrode body made of Cu or Cu alloy.
  • the shape of the electrode tip shape did not change even after spot welding, and the electrode life was longer than that of the integrated 1% Cr-Cu alloy electrode.
  • Ce0 2 0.5 area a W-based composite material-made core material of less than% by volume ratio SiZSo: 1.0 Test buried in the Cu electrode body at No.23, in 24 of the electrode, the core material effect of embedding effectively work Itatame The electrode life exceeded 10000 striking points.
  • the amount of deposited metal a larger amount of plated metal was deposited than in Test Nos. 13 to 17 and 17 to 20.
  • the area ratio SiZSo falls outside the range of 0.7 to 3.0 No.ll -12 and 18 to: in 19 of the electrode, but was shorter electrode life than l% Cr-Cu alloy electrode, youth electrodes life than the CeO 2 the embedded W-made core material not dispersed electrode (example 1) There was a tendency to extend a thousand.
  • Example 2 For spot welding of the same Zn—Al—Mg alloy-plated steel plate as in Example 1, a welding electrode in which a TaC-dispersed W sintered body was embedded in a pure Cu electrode body was used.
  • the core material we prepared mixed powders in which TaC powder with a particle size of 0.05-3 ⁇ was dispersed in various proportions of W powder with a purity of 99.95%. Diameter produced by centerless polishing: 6mm TaC dispersion W sintered body It was used. Pure Cu melted in a reducing atmosphere and TaC dispersion W sintered body are integrated into a DR type with an abutment surface diameter of 6mm and an overall diameter of 16mni. An arc with a radius of curvature of 40mm is a contact surface diameter of 6mm. In this part, a welding electrode with a radius of curvature of 8mm was attached to the other part.
  • the deposition of MgO is small, the increase in resistance between the electrode and the plated steel sheet due to MgO can be suppressed, and it seems that welding with the plated metal is difficult to occur.
  • the significant increase in electrode life is due to the synergistic effect of the TaC fine particles dispersed in the W material, which suppresses wetting with the plated metal, and the suppression of crack generation and propagation near the contact surface. Inferred.
  • the fine particles dispersed in the W material have a suitable size and amount of dispersion, It can be understood that the intended purpose cannot be achieved unless the size and amount of dispersion are appropriate.
  • Table 4 Effects of TaC fine particle dispersion and particle size on electrode life
  • a W-based sintered material in which various fine particles are dispersed is used as a welding electrode embedded in a pure Cu electrode body in the same manner as in Example 3, and two Zn-Al-Mg alloy-plated steel sheets are continuously used. Spot welding was performed and the electrode life was investigated.
  • Table 5 Relationship between fine particle type, dispersion, particle size and electrode life
  • A1 plated steel sheet with a thickness of 0.8mm and adhesion per one side of 30gZm 2 was used as the material to be welded. Except for the conditions shown in Table 6, continuous spot welding was performed using the same electrode as that used in Example 3, and the electrode life was investigated.
  • TaC fine particles with an average particle size of 2 ⁇ or less
  • a significantly longer electrode life is obtained even with the A1 plated steel sheet, which is considered difficult to weld, and the effect of dispersing TaC fine particles can be confirmed.
  • Table 7 Effects of TaC fine particle dispersion and particle size on electrode life

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Resistance Welding (AREA)

Abstract

Électrode pour soudage par points ayant une structure double dans laquelle une matière centrale (3) faite de W ou de Mo est incluse dans un corps d'électrode (2) dans la zone de (S1) de la matière principale (3) est fixé pour être (0.7 à 3.0) ´ S0 où S0 est la zone de contact (2a) contactant une matière à être soudée. De manière optionnelle de particules fines sont dispersées dans la matière principale (3) faite de W ou de Mo à une quantité de 0.5 à 10 % de volume. La particule fines comprend un oxyde, un nitrure, un carbure, un borure ou assimilé d’un élément du Groupe 2A, un élément du Groupe 4A, un élément du Groupe 5A, un élément du Groupe 6A ou de lanthanide. La matière principale de l’électrode ci-dessus pour soudage à points est faite de W ou de Mo incluse dans le corps dont le résultat est l'inhibition du soudage ou l'alliage avec un métal revêtu même dans le cas du soudage à points d'un tôle en acier revêtu à base de métal de zinc sous un fort courant électrique. En conséquence, l’électrode ci-dessus peut être utilisée comme 'électrode appropriée au soudage de matière difficile à souder, telles qu'une tôle d'acier et une matière aluminium et qui dure longtemps.
PCT/JP2005/012281 2004-06-30 2005-06-28 Électrode pour soudage par points WO2006004073A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2004192694A JP5083930B2 (ja) 2004-06-30 2004-06-30 スポット溶接用電極
JP2004-192694 2004-06-30
JP2004-282463 2004-09-28
JP2004282463A JP4683890B2 (ja) 2004-09-28 2004-09-28 Ｍｇ成分含有Ｚｎ系合金めっき鋼板スポット溶接用電極
JP2004-292990 2004-10-05
JP2004292990A JP4683896B2 (ja) 2004-10-05 2004-10-05 スポット溶接用電極

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007142257A1 (fr) * 2006-06-08 2007-12-13 Nippon Tungsten Co., Ltd. Électrode pour soudage par points
CN102039479A (zh) * 2010-12-20 2011-05-04 福建海峡科化股份有限公司 一种储能焊接铜脚线-镍铬合金丝的方法
CN103350277A (zh) * 2013-07-22 2013-10-16 哈尔滨凌云汽车零部件有限公司 焊接车门镀锌板的焊枪专用复合电极
DE102014203160A1 (de) 2014-02-21 2015-08-27 Volkswagen Aktiengesellschaft Schweißelektrode
CN107283036A (zh) * 2016-04-13 2017-10-24 通用汽车环球科技运作有限责任公司 具有带插入件的电极的电阻点焊钢和铝工件
CN107350616A (zh) * 2016-05-10 2017-11-17 大众汽车有限公司 焊接电极、用于阻抗点焊的方法和机动车
WO2020122620A1 (fr) * 2018-12-12 2020-06-18 주식회사 포스코 Pointe d'électrode pour soudage par points, et procédé pour sa fabrication

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JPS5449944A (en) * 1977-09-29 1979-04-19 Yamato Puresu Kk Electrode for spot welding
JPH01113182A (ja) * 1987-10-26 1989-05-01 Nippon Steel Corp 抵抗溶接用電極
JPH02117780A (ja) * 1988-10-27 1990-05-02 Asahi Glass Co Ltd セラミックス粒子分散金属被覆電極およびその製造法
JPH0324388U (fr) * 1989-07-13 1991-03-13
JPH0439583U (fr) * 1990-08-02 1992-04-03
JPH05220581A (ja) * 1992-02-14 1993-08-31 Maekawa Seisakusho:Kk スポット溶接機用の複合電極

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5449944A (en) * 1977-09-29 1979-04-19 Yamato Puresu Kk Electrode for spot welding
JPH01113182A (ja) * 1987-10-26 1989-05-01 Nippon Steel Corp 抵抗溶接用電極
JPH02117780A (ja) * 1988-10-27 1990-05-02 Asahi Glass Co Ltd セラミックス粒子分散金属被覆電極およびその製造法
JPH0324388U (fr) * 1989-07-13 1991-03-13
JPH0439583U (fr) * 1990-08-02 1992-04-03
JPH05220581A (ja) * 1992-02-14 1993-08-31 Maekawa Seisakusho:Kk スポット溶接機用の複合電極

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007142257A1 (fr) * 2006-06-08 2007-12-13 Nippon Tungsten Co., Ltd. Électrode pour soudage par points
EP2027964A1 (fr) * 2006-06-08 2009-02-25 Nippon Tungsten Co., Ltd. Électrode pour soudage par points
EP2027964A4 (fr) * 2006-06-08 2010-04-28 Nippon Tungsten Électrode pour soudage par points
US8471169B2 (en) 2006-06-08 2013-06-25 Nippon Tungsten Co., Ltd. Electrode for spot welding
KR101281267B1 (ko) 2006-06-08 2013-07-03 닛신 세이코 가부시키가이샤 스폿 용접용 전극
CN102039479A (zh) * 2010-12-20 2011-05-04 福建海峡科化股份有限公司 一种储能焊接铜脚线-镍铬合金丝的方法
CN103350277A (zh) * 2013-07-22 2013-10-16 哈尔滨凌云汽车零部件有限公司 焊接车门镀锌板的焊枪专用复合电极
DE102014203160A1 (de) 2014-02-21 2015-08-27 Volkswagen Aktiengesellschaft Schweißelektrode
CN107283036A (zh) * 2016-04-13 2017-10-24 通用汽车环球科技运作有限责任公司 具有带插入件的电极的电阻点焊钢和铝工件
CN107350616A (zh) * 2016-05-10 2017-11-17 大众汽车有限公司 焊接电极、用于阻抗点焊的方法和机动车
WO2020122620A1 (fr) * 2018-12-12 2020-06-18 주식회사 포스코 Pointe d'électrode pour soudage par points, et procédé pour sa fabrication

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