WO2011152341A1 - 溶接用銅めっきソリッドワイヤ - Google Patents

溶接用銅めっきソリッドワイヤ Download PDF

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Publication number
WO2011152341A1
WO2011152341A1 PCT/JP2011/062351 JP2011062351W WO2011152341A1 WO 2011152341 A1 WO2011152341 A1 WO 2011152341A1 JP 2011062351 W JP2011062351 W JP 2011062351W WO 2011152341 A1 WO2011152341 A1 WO 2011152341A1
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Prior art keywords
copper
welding
wire
solid wire
plated
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PCT/JP2011/062351
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English (en)
French (fr)
Japanese (ja)
Inventor
良平 栗山
啓一 鈴木
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株式会社神戸製鋼所
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Priority to CN201180025195.XA priority Critical patent/CN102905844B/zh
Publication of WO2011152341A1 publication Critical patent/WO2011152341A1/ja

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    • 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/38—Selection of media, e.g. special atmospheres for surrounding the working area
    • 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
    • B23K35/0261—Rods, electrodes, wires
    • 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
    • B23K35/0261—Rods, electrodes, wires
    • B23K35/0272—Rods, electrodes, wires with more than one layer of coating or sheathing material
    • 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
    • B23K35/365—Selection of non-metallic compositions of coating materials either alone or conjoint with selection of soldering or welding materials

Definitions

  • the present invention relates to a copper-plated solid wire for welding used for carbon dioxide shielded arc welding, and is particularly excellent in feedability and enables continuous welding for a long time.
  • gas shielded arc welding particularly carbon dioxide shielded arc welding using CO 2 as the shielding gas
  • CO 2 the shielding gas
  • the welding wire that supports long-term continuous welding by a welding robot is stored in a large-capacity pail pack with a maximum capacity of 500 kg. Only done at the time of exchange. That is, once the welding wire is passed through the welding machine, it is not necessary to pass the tip of the welding wire again until all the welding wires stored in the pail pack are consumed by welding and become empty. Become.
  • the welding wire used for gas shielded arc welding is a solid wire with copper plating on the surface so that it can be fed smoothly, and the welding wire is fed smoothly, that is, wire feeding. Lubricating oil or solid lubricant is applied to the surface to improve feedability.
  • metal powder such as copper powder derived from plating and iron powder derived from the core (steel wire) generated during the production of the welding wire adheres to the surface of the welding wire.
  • part of such solid matter adhering to the surface of the welding wire adheres to the inside of the conduit liner or power supply tip, and the amount of the solid matter is not changed unless the conduit liner is manually cleaned and the power supply tip is replaced.
  • the metal powder and solid lubricant deposited in the power feed tip may fill the clogging with the welding wire and clog it, leading to the stop of feeding the welding wire. Therefore, even when a large amount of welding wire is supplied to the welding robot capable of continuous welding for a long time using a pail pack, automatic welding is stopped before the pail pack is replaced.
  • a solid lubricant composed of one or more of molybdenum disulfide and boron nitride, potassium compound, copper powder, and wax is applied to the surface, and a lubricating oil is further applied thereon.
  • a copper plating wire for welding provided with two coating layers is described.
  • potassium, molybdenum disulfide, phospholipid, lubricating oil is applied, and the total adhesion amount of the solid matter such as potassium and metal powder is 10 kg of the copper plating solid wire for welding.
  • a copper-plated solid wire for welding regulated to 0.30 g or less is described.
  • the present invention has been made in view of the above-mentioned problems, and it is a copper-plated solid wire used by being stored in a pail pack.
  • An object of the present invention is to provide a copper-plated solid wire suitable for improving wire feedability that enables continuous welding for a long time.
  • the present inventors have investigated the feeding trouble mechanism in the welding wire stored in the pail pack, and as a result, the following phenomenon has been found.
  • the welding wire stored in the pail pack has a straight shape without bending due to spool winding, so that the contact pressure between the conduit liner and the power supply tip is weak, and the power supply between the inner surface of the power supply tip and the welding wire is weak. Due to the fact that the contact point easily varies, microchip fusion that occurs when the energization point varies frequently occurs. Therefore, as a result of intensive studies, the present inventors have come to the idea of controlling the amount of solid matter attached to the surface as a welding wire that can further reduce the fusion with the inner surface of the power feed tip.
  • the present invention is a copper-plated solid wire for welding used in carbon dioxide shielded arc welding, and the copper powder and iron powder adhering to the surface do not exceed 20 ⁇ m in diameter, and the copper-plated solid wire for welding A total of 0.10 g or less per 10 kg, and on the surface of the welding copper plating solid wire 10 kg, animal or vegetable oil or mineral oil as a lubricating oil: 0.4 to 2.0 g, and a solid lubricant with a particle size of 0. 1 to 10 ⁇ m molybdenum disulfide: 0.03 to 0.15 g is attached.
  • Such copper-plated solid wire for welding is generated by applying lubricating oil to reduce the frictional resistance between the metal conduit liner and the inner surface of the power feed tip, and scraping from the surface of the copper-plated solid wire for welding.
  • Metal powder to be reduced can be reduced.
  • molybdenum disulfide as a solid lubricant together with the lubricating oil, the fusion with the inner surface of the power supply chip is reduced, the slipping property of the power supply chip is improved, and the inner surface of the power supply chip where metal powder is easily deposited Fusion marks can be reduced.
  • an appropriate effect is acquired by regulating the adhesion amount of lubricating oil and molybdenum disulfide.
  • the amount of the metal powder adhering to the surface is inevitably suppressed to a range smaller than the conventional one, so that the wire feeding is not stopped in long-time continuous robot welding day and night.
  • the copper-plated solid wire for welding according to the present invention, it is used for carbon dioxide shielded arc welding, the slipperiness at the conduit liner and the power feed tip is improved, and the slipperiness is maintained for a long time. Even if stored, microchip fusion is less likely to occur when the energization point fluctuates. As a result, the frequency of occurrence of feeding troubles is reduced, and the welding robot can perform automatic welding for a long time day and night.
  • the copper-plated solid wire according to the present invention is obtained by applying animal or vegetable oil or mineral oil as a lubricating oil and molybdenum disulfide as a solid lubricant on the surface of a copper-plated solid wire used for carbon dioxide shielded arc welding. . Specifically, about 10 kg of the copper-plated solid wire, lubricating oil: 0.4 to 2.0 g and molybdenum disulfide having a particle diameter of 0.1 to 10 ⁇ m: 0.03 to 0.15 g are attached to the surface. It was applied to.
  • the copper plating solid wire of the copper plating solid wire according to the present invention before the application of the lubricating oil and the solid lubricant (hereinafter referred to as the pre-coating copper plating solid wire as appropriate) is the manufacturing process and conveyance thereof. Occasionally, copper powder derived from plating and iron powder derived from interlining are generated and adhered to the surface. In the copper-plated solid wire according to the present invention, these copper powder and iron powder have a diameter (powder diameter) of not more than 20 ⁇ m, and the amount of adhesion per 10 kg of the copper-plated solid wire is 0.10 g or less in total. To do.
  • the deposits on the surface of the copper-plated solid wire according to the present invention will be described.
  • Copper powder and iron powder As described above, copper powder and iron powder (hereinafter collectively referred to as metal powder) adhere to the surface of the copper-plated solid wire before coating, and these are carried over even after the lubricant and solid lubricant are applied. And continue to adhere.
  • metal powder In welding using such a copper-plated solid wire, most of the metal powder passes through the inside of the conduit liner and the power feed chip while being adhered to the surface of the copper-plated solid wire, and is discharged. However, a part of the metal powder is separated from the surface of the copper-plated solid wire and adheres in the conduit liner and the power supply chip, and is deposited in the power supply chip and the like together with the consumption of the copper-plated solid wire.
  • the amount of metal powder adhering to the copper-plated solid wire is large, the deposition rate in the power supply chip or the like is increased, and the feeding length of the copper-plated solid wire until the feeding is stopped is shortened.
  • metal powder total of copper powder and iron powder
  • the adhesion amount of the metal powder is smaller, and the total amount of copper powder and iron powder adhering to the surface of the copper plating solid wire according to the present invention is 0.10 g or less per 10 kg of the copper plating solid wire for welding.
  • the adhesion amount of the metal powder can be reduced by washing the pre-application copper-plated solid wire before applying the lubricating oil and the solid lubricant, as will be described later.
  • the metal powder having a maximum diameter of more than 20 ⁇ m adheres regardless of the amount of adhesion, there is a risk of impeding the conductivity of the power supply chip when passing through the power supply chip. Since the copper powder and iron powder adhering to the surface of the copper-plated solid wire according to the present invention do not exceed 20 ⁇ m because they are not easily discharged from the chip and easily adhere to and accumulate inside. Such coarse metal powder is generated as plating residue when the copper plating solid wire before coating is not good in adhesion of copper plating, and remains on the surface.
  • the copper-plated solid wire according to the present invention applies animal oil, vegetable oil, or a mixture thereof (hereinafter collectively animal and vegetable oil), or mineral oil or synthetic oil (hereinafter collectively mineral oil) as a lubricating oil.
  • animal and vegetable oils include palm oil, rapeseed oil, castor oil, lard, and beef tallow.
  • Mineral oil contains paraffinic hydrocarbons and naphthenic hydrocarbons commonly used as lubricating oils. And those made of refined petroleum products. These oils have the effect of reducing the frictional resistance between metals.
  • animal or vegetable oil or mineral oil is applied as a lubricant to the surface of the copper-plated solid wire in a state where the particles of molybdenum disulfide described below are mixed, so that in welding, the copper-plated solid wire becomes a conduit liner and a power feed tip.
  • animal and vegetable oils include palm oil, rapeseed oil, castor oil, lard, and beef tallow.
  • mineral oil include polybutene-based mineral oil and synthetic oil including paraffinic oil.
  • Lubricating oil has an adhesion amount on the surface of 10 kg of copper-plated solid wire of less than 0.4 g, so that the above effect cannot be obtained. Therefore, the wire feedability is low, and a large amount of spatter is generated immediately after the start of welding. As a result, the arc length fluctuates frequently, and spatter may adhere to the inside of the power supply tip and stop feeding. On the other hand, when the adhesion amount exceeds 2.0 g, the lubricating oil forms a sump in the power supply tip in continuous welding, and this lubricating oil periodically leaks from the tip of the power supply tip. It falls to the weld bead and a healthy weld metal cannot be obtained.
  • the lubricating oil adhering to the surface of the copper-plated solid wire according to the present invention is 0.4 g or more and 2.0 g or less per 10 kg of the copper-plated solid wire for welding. Since mineral oil has a smaller friction reducing effect than animal and vegetable oils, when applied to lubricating oil, the amount of adhesion per 10 kg of copper plating solid wire for welding is preferably 0.8 g or more, and more preferably 0.85 g or more. . Further, since mineral oil is less likely to evaporate due to arc heat than animal and vegetable oils, when applied to lubricating oil, the amount of adhesion is preferably 1.0 g or less.
  • Molybdenum disulfide The generally used molybdenum disulfide (MoS 2 ) is applied to the copper-plated solid wire according to the present invention as a solid lubricant.
  • Molybdenum disulfide has the effect of reducing the adhesion of the copper-plated solid wire to the inner surface of the power supply tip, so it improves the slipperiness of the power supply tip, and metal powder is selectively used for the fusing marks on the inner surface of the power supply tip. However, it is possible to reduce the deposition of the metal powder in the power feed tip by reducing the fusion marks.
  • molybdenum disulfide When molybdenum disulfide has an adhesion amount on the surface of 10 kg of copper-plated solid wire of less than 0.03 g, the above effect cannot be obtained sufficiently.
  • molybdenum disulfide is a solid material like the metal powder, a part of the molybdenum disulfide is deposited and adhered to the inside of the conduit liner and the power supply tip away from the surface of the copper-plated solid wire. If the number increases, the supply will stop. Specifically, when the adhesion amount exceeds 0.15 g, long-time continuous welding becomes difficult.
  • the molybdenum disulfide adhering to the surface of the copper-plated solid wire according to the present invention is 0.03 g or more and 0.15 g or less per 10 kg of the copper-plated solid wire for welding.
  • Molybdenum disulfide is applied to the surface of the copper-plated solid wire in a state of being mixed with the lubricating oil, and the amount of adhesion can be controlled by adjusting the mixing ratio. Specifically, 4 to 10% by weight with respect to the lubricating oil is preferable. With this mixing ratio, it is easy to obtain an appropriate adhesion amount for both the lubricating oil and molybdenum disulfide when applied by the electrostatic coating method described later.
  • molybdenum disulfide is applied so that it adheres uniformly to the surface of the copper-plated solid wire. If there is a bias in the amount of adhesion, molybdenum disulfide adheres to the inside of the power feed chip from a portion where the surface of the copper-plated solid wire is large, and melts in the power feed tip at a location where there is little.
  • the mixture with the lubricating oil is applied to the surface of the copper-plated solid wire by an electrostatic coating method as will be described later.
  • molybdenum disulfide is a solid material, and in the present invention, a granular material is applied.
  • the diameter is large, specifically, when it exceeds 10 ⁇ m, power is supplied as a coarse solid material during welding. Increase the amount of deposition in the chip.
  • the particle size of molybdenum disulfide is less than 0.1 ⁇ m, the viscosity of the mixture increases when mixed with lubricating oil to be applied to the surface of the copper-plated solid wire. The fluidity of the liquid is reduced, and the discharge amount of the molybdenum disulfide and lubricating oil by the coating device becomes unstable.
  • molybdenum disulfide having a particle size of 0.1 ⁇ m or more and 10 ⁇ m or less is used. Molybdenum disulfide having such a particle diameter is obtained by pulverizing with a mill, for example.
  • the amount of metal powder (copper powder, iron powder) and molybdenum disulfide adhering to the surface of the copper-plated solid wire can be measured, for example, by the following method. Cut about 1-10 kg of copper-plated solid wire so that it is not touched, measure the mass, and then wash with an organic solvent such as ethanol, acetone, normal paraffin, or petroleum ether, and dry the organic solvent used for this washing. Filter with a filter paper and measure the mass of the residue. Specifically, after filtering with a filter paper whose mass has been measured in advance, the mass increase obtained by drying the filter paper and measuring the mass again becomes the mass of the residue. The mass of the residue is the sum of the metal powder and molybdenum disulfide.
  • the residue adhering to the filter paper is quantitatively analyzed with an energy dispersive X-ray fluorescence spectrometer (EDX), and the mass ratio of copper powder (Cu), iron powder (Fe), and molybdenum disulfide (MoS 2 ). Is calculated by converting the mass of the residue. Or molybdenum disulfide is melt
  • EDX energy dispersive X-ray fluorescence spectrometer
  • the mass of the metal powder (total of copper powder and iron powder) is calculated by subtracting the mass of molybdenum disulfide from the mass of the residue. By converting these masses per 10 kg by the mass of the cut copper plating solid wire, the respective masses of the metal powder and molybdenum disulfide adhering to the surface of the copper plating solid wire can be obtained.
  • the size of the metal powder (copper powder, iron powder) and molybdenum disulfide adhering to the surface of the copper-plated solid wire can be determined by observing the residue adhering to the filter paper with a scanning electron microscope (SEM). it can. Or you may observe the surface of a copper plating solid wire directly by SEM. However, as shown in FIG. 3A, copper powder, iron powder, and molybdenum disulfide all appear black in the SEM image. Therefore, it is possible to identify solids by simultaneously performing surface analysis with an electron beam microanalyzer (EPMA). For example, a solid that matches the detection position of molybdenum can be identified as molybdenum disulfide. In addition, when the surface of the copper-plated solid wire is directly observed, molybdenum disulfide appears white and the distribution state can be observed as shown in FIG.
  • SEM scanning electron microscope
  • the amount of lubricating oil adhering to the surface of the copper-plated solid wire can also be measured by cutting out the copper-plated solid wire and measuring its mass, followed by washing with a solvent, as in the case of the solid material. Specifically, it was washed with carbon tetrachloride (CCl 4 ), and this washing solution was quantitatively analyzed by infrared absorption spectroscopy (IR) to obtain the mass, and converted to the mass of the cut copper plating solid wire per 10 kg. By doing so, the mass of the lubricating oil adhering to the surface of the copper plating solid wire can be obtained.
  • IR infrared absorption spectroscopy
  • a known copper-plated solid wire used for carbon dioxide shielded arc welding can be applied, and JIS-specified copper-plated solid wires such as JIS Z3312 YGW18 and YGW11 can be applied.
  • JIS-specified copper-plated solid wires such as JIS Z3312 YGW18 and YGW11 can be applied.
  • Such a pre-coating copper-plated solid wire can be produced by a known method, and as shown in FIG. 1, a wire made of a steel material having a predetermined component is stretched with annealing in the middle as necessary (not shown). After the wire is coated and coated with copper, it is further drawn to obtain a product diameter.
  • the copper-plated solid wire has a wire drawing lubricant and metal powder adhering to its surface.
  • a cleaning method it is desirable in production to use a cleaning device that allows the pre-coating copper-plated solid wire to pass in-line.
  • an immersion hot water bath immersed in water at a water temperature of 50 ° C. or higher for a predetermined time, a high-pressure liquid breather with a pressure of 0.3 to 0.5 MPa to remove adhering water, a temperature of 80 to 100 ° C., a pressure of 0
  • a high-pressure steam cleaning apparatus of 1 to 0.5 MPa, a water temperature of 40 ° C.
  • the high-pressure water washing apparatus is a device in which a copper-plated solid wire before coating passes further inside the inner pipe of the double pipe structure, and the water is placed between the outer pipe and the inner pipe of the double pipe structure. Is supplied by a pump, and high-pressure water is sprayed from a large number of nozzles formed in the inner pipe toward the copper-plated solid wire before coating.
  • the passing speed of the pre-coating copper-plated solid wire in the cleaning apparatus is set according to the size of the apparatus. Further, a cavitation device may be added to these devices to directly or indirectly vibrate the pre-coating copper-plated solid wire.
  • an electrostatic coating method as a method of applying a mixture of lubricating oil and molybdenum disulfide.
  • the electrostatic coating method it is applied while maintaining the concentration of molybdenum disulfide in the mixture, so that molybdenum disulfide is evenly distributed on the surface of the copper-plated solid wire, rather than coating with a coating medium such as a brush or felt. Easy to adhere. According to a brush or the like, it is particularly difficult to make it uniform in the circumferential direction of the surface of the copper-plated solid wire.
  • an example of the coating method using an electrostatic coating apparatus is demonstrated.
  • Lubricating oil in which molybdenum disulfide having a predetermined particle size is mixed in a mass ratio of 4 to 10% in a mixing storage tank is supplied to the electrostatic coating device by a metering pump.
  • a pre-application copper-plated solid wire which is the object to be coated, is set as the positive electrode
  • the ejection portion of the electrostatic coating device is set as the negative electrode.
  • the mixture of the lubricating oil is atomized and ejected from the ejection part, the mixture is negatively charged by the ejection part of the electrostatic coating device as a negative electrode, so that it is coated at a constant ratio via an electric field gradient in the atmosphere. It adheres by being adsorbed by an object.
  • molybdenum disulfide with respect to the lubricating oil substantially matches the mixing ratio in the mixing storage tank with respect to the amount of adhesion to the surface of the copper plating solid wire.
  • the surface of the copper-plated solid wire thus obtained was solid as shown in the SEM image photograph (FIG. 3 (a)) and the image photograph (FIG. 3 (b)) in which molybdenum was detected by EPMA analysis.
  • the distribution of the material, particularly molybdenum disulfide becomes uniform.
  • the same mixture is applied as a coating medium with felt, as shown in FIGS. 3C and 3D, the solid matter is unevenly distributed along the length of the copper-plated solid wire. It is likely to occur.
  • FIG. 3D the uniformity of the distribution of molybdenum disulfide is lowered, and there is a possibility that the amount of adhesion locally falls outside the scope of the present invention.
  • molybdenum disulfide adheres uniformly to the surface of the copper-plated solid wire.
  • the amount of adhesion almost coincides with the mixing ratio in the mixing storage tank, and can be easily controlled by the mixing ratio and the coating amount with respect to the lubricating oil.
  • the copper-plated solid wire according to the present invention obtained by the above method is wound and stored in a pail pack.
  • Example preparation A copper-plated solid wire having a diameter of 1.2 mm that conforms to the standard of JIS Z3312 YGW18 used for carbon dioxide shielded arc welding was cleaned with an in-line type cleaning device under the following conditions. (Cleaning conditions) Device passing speed: 400-1000m / min Immersion bath temperature: 40-100 ° C Liquid blown air breath pressure: 0.1 to 1.0 MPa Steam cleaning device temperature: 80 to 200 ° C., pressure: 0.1 to 1.0 MPa High pressure water washer water temperature: 40-80 ° C, pressure: 5-30MPa
  • the calculated mass is converted per 10 kg by the mass of the cut copper plating solid wire, and is shown in Table 1.
  • the residue adhering to the said filter paper it observed by 400 time with a scanning electron microscope (SEM), the diameter of metal powder (copper powder, iron powder) was measured, and distribution range is shown in Table 1.
  • molybdenum disulfide is dissolved by white smoke treatment from the filter paper to which the residue is attached, and the solution is quantitatively analyzed by atomic absorption method to determine the mass of molybdenum (Mo), which is converted to the mass of molybdenum disulfide, Further, the mass of the metal powder (total of copper powder and iron powder) was calculated by subtracting this mass from the mass of the residue. These masses almost coincided with the masses determined by the EDX.
  • Fig. 3 (a) shows a SEM image of the surface (copper powder, iron powder, molybdenum disulfide) in Fig. 3.
  • Fig. 3 (a) shows a photograph of molybdenum detected by EPMA analysis (white image).
  • Fig. 3 (b) shows the molybdenum disulfide.
  • the welding test is continuously performed for 6 hours at the longest, and for the specimens that are not weldable due to the stop of feeding of the copper-plated solid wire before 6 hours elapse, the welding stop time is shown in Table 1 as the continuous welding time. .
  • the mass of the deposit in the power supply tip was measured as the solid deposition amount, and the solid deposition rate was calculated from the continuous welding time, and shown in Table 1.
  • the inside of the power supply tip was visually observed. If the feed stop was due to clogging of the deposit, the power supply tip was clogged, and the others were “ ⁇ ”. As shown in Table 1. Further, Table 1 shows “ ⁇ ” when the copper-plated solid wire is not fused, “ ⁇ ” when micro-fusion is generated, and “X” when fusion is generated.
  • a test material that can be continuously welded for 6 hours and that there was no abnormality in the welded part or the like is shown in Table 1 with a comprehensive evaluation of “ ⁇ ”, and “ ⁇ ” indicates that a slight abnormality occurred, and the continuous welding time Table 3 also shows “ ⁇ ” for 3 hours or more and less than 6 hours.
  • the continuous welding time of less than 3 hr is indicated by “x” in Table 1.
  • the wire No. 1 to 8 are examples in which the diameter and amount of the metal powder remaining on the surface, the kind and amount of the lubricant oil applied and adhered, and the particle diameter and amount of molybdenum disulfide are all within the scope of the present invention. Since the solid deposition rate in the power feed tip was as low as less than 4 mg / hr, the feed was not stopped by continuous welding for 6 hr, and there was no abnormality in the welded portion. Furthermore, as shown in FIGS. 3 (a) and 3 (b), the surface of the copper-plated solid wire of the example according to the present invention has a distribution of solid matter, particularly molybdenum disulfide, as shown in FIGS. Since it is uniform and is in such an adhesion state, the effect of molybdenum disulfide becomes appropriate, and good wire feedability can be maintained for a long time.
  • wire No. No. 21 is a comparative example in which coarse metal powder adhered to the copper-plated solid wire before coating by relaxing the activation treatment before the plating. For this reason, the amount of the metal powder adhering is within the range of the present invention, but the coarse metal powder is not discharged from the power supply chip and adheres to the inside to further deposit the subsequent solid matter. Feeding was stopped in a shorter time than the comparative example with an excessive amount of adhesion. In addition, this coarse metal powder hindered the electrical conductivity between the power feed tip and the copper-plated solid wire, resulting in frequent arc instability.
  • Wire No. Nos. 11 and 15 were insufficient in the amount of lubricant applied, so that the wire feeding performance was lowered, and the wire feeding was stopped even in a state where there was little accumulation of solid matter in the power feed tip.
  • wire No. Nos. 12 and 16 were capable of continuous welding for 6 hours because the amount of lubricant applied was excessive, but during welding, oil droplets dropped from the tip of the power feed tip onto the molten metal on the weld base metal, resulting in a weld bead. Blow holes were formed at several locations.
  • phospholipid 22 is a comparative example in which phospholipid was added to palm oil as a lubricating oil, and the amount of phospholipid deposited was about 0.08 g. Since this phospholipid corroded the copper of the copper-plated solid wire, the corroded copper hindered the current-carrying power of the power supply tip, causing arc instability immediately after the start of welding, leading to the stop of feeding, and discoloration on the surface Was observed.
  • Wire No. Nos. 9 and 13 were insufficient in the amount of molybdenum disulfide attached, so that a minute fusion to the power feed tip occurred and the feed was stopped. Furthermore, metal powder (mainly copper powder) easily accumulates on the minute fusion marks generated in the power supply chip, and the solid matter accumulated in the power supply chip increases before the supply is stopped. On the other hand, wire No. In Nos. 10 and 14, since the adhering amount of molybdenum disulfide was excessive, molybdenum disulfide acting as a lubricant was deposited in the power supply tip beyond the allowable limit of continuous welding, and the supply was stopped. In addition, wire No. No.
  • molybdenum disulfide having an excessively large particle size Since the particle size of molybdenum disulfide is as large as that of the metal powder, it was deposited in the power supply chip as a solid material like the metal powder. As a result, the power supply chip was clogged in a short time and the supply was stopped, and a large amount of molybdenum disulfide having a large particle size was deposited in the power supply chip together with the metal powder.

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  • Nonmetallic Welding Materials (AREA)
PCT/JP2011/062351 2010-05-31 2011-05-30 溶接用銅めっきソリッドワイヤ WO2011152341A1 (ja)

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CN106541224A (zh) * 2016-10-28 2017-03-29 北京工业大学 一种无镀铜特殊涂层焊丝用纳米润滑油及其制备方法
WO2021199998A1 (ja) * 2020-03-31 2021-10-07 株式会社神戸製鋼所 アーク溶接用ソリッドワイヤ
CN115743687A (zh) * 2023-01-10 2023-03-07 昆明金方金属制品有限公司 一种镀铜焊丝生产装置
WO2024054538A1 (en) * 2022-09-08 2024-03-14 Lincoln Global, Inc. Welding electrode with functional coatings

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CN103537819B (zh) * 2013-09-23 2016-06-15 中冶焊接科技有限公司 一种气体保护焊用非镀铜实芯焊丝及其制备方法
CN107030279A (zh) * 2017-03-21 2017-08-11 海安南京大学高新技术研究院 铁基磁粉绝缘包覆方法
JP6788550B2 (ja) * 2017-06-16 2020-11-25 株式会社神戸製鋼所 アーク溶接方法およびソリッドワイヤ
CN108372373B (zh) * 2018-05-04 2023-12-08 杭州星冠机械科技有限公司 一种焊丝高速镀铜生产工艺及生产线

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JP2003320481A (ja) * 2002-04-26 2003-11-11 Kobe Steel Ltd 溶接用ワイヤへの潤滑剤塗布方法
JP2006315059A (ja) * 2005-05-13 2006-11-24 Kobe Steel Ltd 銅めっき付きアーク溶接用ソリッドワイヤ
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106541224A (zh) * 2016-10-28 2017-03-29 北京工业大学 一种无镀铜特殊涂层焊丝用纳米润滑油及其制备方法
WO2021199998A1 (ja) * 2020-03-31 2021-10-07 株式会社神戸製鋼所 アーク溶接用ソリッドワイヤ
JP2021159957A (ja) * 2020-03-31 2021-10-11 株式会社神戸製鋼所 アーク溶接用ソリッドワイヤ
JP7376411B2 (ja) 2020-03-31 2023-11-08 株式会社神戸製鋼所 アーク溶接用ソリッドワイヤ
WO2024054538A1 (en) * 2022-09-08 2024-03-14 Lincoln Global, Inc. Welding electrode with functional coatings
CN115743687A (zh) * 2023-01-10 2023-03-07 昆明金方金属制品有限公司 一种镀铜焊丝生产装置

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