• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    In order to reduce spatter ejection in gas metal arc welding, a consumable wire electrode is used, which is coated with an agent containing at least one substance which reduces spatter ejection.
    公开号:AT512331A1
    申请号:T1859/2011
    申请日:2011-12-21
    公开日:2013-07-15
    发明作者:Hans Hoffmann
    申请人:Hans Hoffmann；
    IPC主号:
    专利说明:

    Method for reducing the spatter ejection at Metallschutzgassehweifien
    description
    The invention relates to a method for reducing spatter ejection during gas metal arc welding with a consumable wire electrode.
    Due to the spatter ejection during gas shielded metal arc welding (MSG), spatters in the form of more or less large drops adhere to the base material, so that a complex cleaning of the workpiece after welding is required.
    The object of the invention is to provide a method for reducing the spatter ejection during metal arc welding.
    It is achieved according to the invention by the method according to claim 1. In the subclaims advantageous embodiments of the method according to the invention are shown.
    According to the inventive method, the wire electrode, which is supplied to the weld, previously been coated with an agent that contains a substance that completely eliminates the spatter ejection in gas metal arc welding, at least as far as possible. This eliminates the costly removal of weld spatter from the workpiece after welding.
    The method according to the invention is particularly applicable to pulsed arc welding. In particular, argon or an argon mixture is used as protective gas.
    The wire electrode is preferably formed by a solid wire electrode. The material of the wire electrode may be steel, unalloyed or alloyed, ferritic or austenitic, copper in all alloy forms (eg CuSi3) or unalloyed or alloyed aluminum.
    The base material may be steel, alloyed or unalloyed, ferritic or austenitic, or unalloyed or alloyed aluminum.
    The coating agent with which the wire electrode is coated according to the invention contains at least one substance which is guided into the arc with the wire electrode and ionizes at the high temperature of the plasma of more than 8,000 degrees Celsius, which arises in the arc. Due to the substance-enhanced ion formation, the electrical conductivity of the plasma and thus the degree of plasma ionization should increase.
    This leads to an increase in the arc stability and process reliability in gas metal arc welding, with the result that a constant fine-droplet material transfer takes place on the workpiece, which prevents the formation of spatter, which results from the ejection of material from the arc.
    The spatter ejection reducing substance in the coating agent may be a salt, especially an organic salt.
    The substance which reduces the spatter ejection may also be a nitrogen-containing organic compound.
    In the case of an organic salt as a spatter ejection-reducing substance, the cation and / or the anion of the salt may be a nitrogen-containing compound. 5: • *
    Preferably, the organic nitrogen-containing compound is a heterocyclic compound having at least one nitrogen atom as a ring member or an amine.
    When the organic nitrogen-containing compound is an acid, the organic nitrogen-containing acid may form the cation of the salt. If the organic nitrogen-containing compound is a base, so z. As an amine, the organic nitrogen-containing base may form the anion.
    The amine may be a trialkanolamine, especially triethanolamine.
    The heterocyclic compound having at least one nitrogen atom may be a benzo-fused heterocyclic compound, for example, benzotriazole.
    The spatter ejection reducing substance in the coating agent may also include an optionally substituted pyridine, pyrrole, pyrazole, imidazole, pyrrolidine and z. For example, quinoline may be a benzo-fused nitrogen-containing ring system.
    The salt containing the coating agent as the spatter ejection reducing substance may also be an ionic liquid, that is, a salt having a melting point of 30 degrees Celsius or below.
    Ionic liquids are formed in particular from heterocyclic compounds having at least one nitrogen atom as ring member and an optionally substituted ammonium ion or z, B. hexafluorophosphate or boron tetrafluoride as anion.
    The content of the at least one spatter ejection-reduced substance in the coating agent is preferably at least 0.01% by weight. Since even small amounts of the substance on the wire electrode are sufficient to reduce the spatter ejection, the content of the spatter ejection reducing substance in the coating agent is preferably at most 0.5 percent by weight.
    The coating agent can be applied to the wire electrode as a liquid, gel or wax. The substance which reduces the spatter ejection may be dissolved or suspended in the liquid. The liquid may be a hydrocarbon, for example kerosene, the wax, for example, paraffin wax, and the gel, for example, a mixture of a liquid hydrocarbon and wax.
    The coating agent may be applied to the wire electrode during manufacture of the wire electrode, for example during wire drawing of the wire electrode. Thus, the substance reduced in the sweat ejection may be contained in the drawing agent of the last draw (blank or polishing train), which is usually formed by an aqueous emulsion or an oil. That is, the drawing agent thus forms the coating agent which is applied to the wire electrode and which contains the spatter ejection reducing substance.
    In particular, when the coating agent is applied as a liquid or suspension to the wire electrode, the liquid can then be removed, for example by evaporation, so that the wire electrode may optionally be covered exclusively with the substance that reduces the spatter ejection.
    In particular, because the wire electrode is supplied in the welding device via a feed line and a current-transmitting contact nozzle of the weld, the coating agent may additionally contain a contact lubricant. Such a contact lubricant is described in AT 4Q5799B. That is, the contact lubricant may be constituted by a fatty acid ester, an ethoxylated alcohol and / or a mineral or vegetable oil.
    The content of the contact lubricant in the coating agent is preferably at least 1% by weight, and preferably at most 10% by weight.
    The coating composition, preferably with the contact lubricant contained therein, can be applied to the wire electrode as a last step in the wire production or before and / or at the feed section of the wire electrode in the welding device, for example by spraying the liquid coating agent or by means of an absorbent substrate, which with the liquid coating agent is impregnated.
    The coating composition may further comprise a dye or a fluorescent compound, for example a fluorescein salt, in particular uranine, ie the sodium salt of fluorescein. Thus, the coating of the wire electrode can be controlled with the coating agent and the substance contained therein which reduces the spatter ejection and thus the process reliability can be increased.
    The following examples serve to further illustrate the invention.
    Comparative Example t ························································································ ········
    A wire electrode was coated with a 3.0 weight percent ethoxylated alcohol contact lubricant, 0.4 weight percent terpin oil dissolved in kerosene, and residual fatty acid ester.
    In pulsed arc welding with the wire electrode coated in this way, a restless electric arc with high spatter ejection occurred.
    Example according to the invention
    The same wire electrode was coated with a coating composition which also contains, in addition to the stated amounts of fatty acid ester, ethoxylated alcohol and terpin oil, 0.1% by weight of ΙΗ-benzotriazole and 0.1% by weight of triethanolamine. There was a short and almost stable arc cone and almost no spatter ejection found.
    权利要求:
    Claims (17)
    [1]
    · 9

    1. A method for reducing spatter ejection in gas metal arc welding with a consumable wire electrode, characterized in that a metal electrode is used which is coated with an agent containing at least one substance which reduces the spatter ejection.
    [2]
    2. The method according to claim 1, characterized in that the spatter ejection-reducing substance is a salt.
    [3]
    3. The method according to claim 1, characterized in that the spatter ejection-reducing substance is a nitrogen-containing organic compound.
    [4]
    4. The method according to claim 2, characterized in that the cation and / or anion of the salt is a nitrogen-containing compound.
    [5]
    5. The method according to claim 3 or 4, characterized in that the organic nitrogen-containing compound is a heterocyclic compound having at least one nitrogen atom as a ring member or an amine.
    [6]
    6. The method according to claim 4 or 5, characterized in that the cation of the salt of the heterocyclic compound with at least one nitrogen atom and the anion of the salt is formed from the amine.
    [7]
    7. The method according to claim 5 or 6, characterized in that the heterocyclic compound having at least one nitrogen atom is a benzo-fused heterocyclic compound. u u ··

    »Fl« · · · · 8 :: · · ·
    [8]
    8. The method according to claim 7, characterized in that the benzo-fused heterocyclic compound is benzotriazole.
    [9]
    9. The method according to any one of the preceding claims, characterized in that the salt is an ionic liquid.
    [10]
    10. The method according to any one of the preceding claims, characterized in that the content of the at least one spatter ejection reducing substance in the coating agent is at least 0.01 weight percent.
    [11]
    11. The method according to any one of the preceding claims, characterized in that the coating agent is applied as a liquid, suspension, gel or wax on the wire electrode.
    [12]
    12. The method according to any one of the preceding claims, characterized in that the coating agent is applied during the manufacture of the wire electrode on the wire electrode.
    [13]
    13. The method according to claim 12, characterized in that the coating agent is applied during wire drawing of the wire electrode.
    [14]
    14. The method according to any one of the preceding claims, characterized in that the wire electrode is coated in the welding device during feeding to the weld with the coating agent.
    [15]
    * * 15. * • • * • • ♦ ···· • • • • • • • • ΦΦ ΦΦ ο > * * φ φ • · • φ φφ · ♦ ······················ The method according to one of the preceding claims, characterized in that the coating agent contains a contact lubricant.
    [16]
    16. The method according to claim 15, characterized in that the contact lubricant is formed by a fatty acid ester, an ethoxylated alcohol and / or a mineral or vegetable oil.
    17. The method according to any one of the preceding claims, characterized in that the coating agent contains a dye or a fluorescent compound.
    18. The method according to claim 17, characterized in that the fluorescent compound is a fluorescein salt. A method of reducing spatter ejection in gas metal arc welding with a consumable wire electrode using a metal electrode coated with an agent containing at least one substance which ejects the spatter reduced, characterized in that the spatter ejection reducing substance is a nitrogen-containing organic compound. 2. The method according to claim 1, characterized in that the nitrogen-containing organic compound is a salt. 3. The method according to claim 2, characterized in that the nitrogen-containing organic compound is the cation and / or anion of the salt. 4. The method according to any one of claims 1 to 3, characterized in that the nitrogen-containing organic compound is a heterocyclic compound having at least one nitrogen atom as a ring member or an amine. 5. The method according to claim 3 or 4, characterized in that the cation of the salt of the heterocyclic compound is formed with at least one nitrogen atom and the anion of the salt of the amine. 6. The method according to claim 4 or 5, characterized in that the heterocyclic compound having at least one nitrogen atom is a benzo-fused heterocyclic compound. 7. Process according to claim 6, characterized in that the benzo-fused heterocyclic compound is benzotriazole. 8. The method according to claim 7, characterized in that the nitrogen-containing organic compound is an ionic liquid of a salt which is formed from a heterocyclic compound having at least one nitrogen atom as a ring member and an anion. 9. The method according to any one of the preceding claims, characterized in that the content of the at least one spatter ejection reducing substance in the coating agent is at least 0.01 weight percent. 10. The method according to any one of the preceding claims, characterized in that the coating agent is applied as a liquid, suspension, gel or wax on the wire electrode. 11. The method according to any one of the preceding claims, characterized in that the coating agent is applied during the manufacture of the wire electrode on the wire electrode. 12. The method according to claim 11, characterized in that the coating agent is applied during wire drawing of the wire electrode. 13. The method according to any one of claims 1 to 10, characterized in that the wire electrode is coated in the welding device during feeding to the weld with the coating agent. 2 POSSIBLE ··· «· · · · · · · · · · · · · · · · · · · · ·················································································· of the preceding claims, characterized in that the coating agent contains a contact lubricant. 15. The method according to claim 14, characterized in that the contact lubricant is formed by a fatty acid ester, an ethoxylated alcohol and / or a mineral or vegetable oil. 16. The method according to any one of the preceding claims, characterized in that the coating agent contains a dye or a fluorescent compound.
    [17]
    17. The method according to claim 16, characterized in that the fluorescent compound is a fluorescein salt. 3 SUCCESSORS Ci
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    同族专利:
    公开号 | 公开日
    DE102012112903B4|2019-11-14|
    DE102012112903A1|2013-06-27|
    AT512331B1|2014-05-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB876729A|1958-08-06|1961-09-06|Air Reduction|Electric arc welding|
    US4166879A|1975-08-07|1979-09-04|Kobe Steel, Ltd.|Gas-shielded-type coated arc welding electrode|
    JPS5737439B2|1978-08-17|1982-08-10|
    AT405799B|1997-07-15|1999-11-25|Hoffmann Hans|METHOD, CONTACT LUBRICANTS AND SUCTION SUBSTRATE FOR ARC WELDING|AT517865A1|2015-10-28|2017-05-15|Hoffmann Hans|Release composition|
    CN109570825B|2018-11-22|2021-07-13|东莞市绿志岛金属有限公司|Low-temperature halogen-free lead-free soldering paste and preparation method thereof|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA1859/2011A|AT512331B1|2011-12-21|2011-12-21|Coating means for a fusible wire electrode for reducing splatter ejection in metal inert gas welding and method for coating the same|ATA1859/2011A| AT512331B1|2011-12-21|2011-12-21|Coating means for a fusible wire electrode for reducing splatter ejection in metal inert gas welding and method for coating the same|
    DE102012112903.7A| DE102012112903B4|2011-12-21|2012-12-21|Coating composition and method for reducing spatter ejection in gas metal arc welding|
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