[go: up one dir, main page]

WO2015140985A1 - Gaz de protection pour brasage mig - Google Patents

Gaz de protection pour brasage mig Download PDF

Info

Publication number
WO2015140985A1
WO2015140985A1 PCT/JP2014/057747 JP2014057747W WO2015140985A1 WO 2015140985 A1 WO2015140985 A1 WO 2015140985A1 JP 2014057747 W JP2014057747 W JP 2014057747W WO 2015140985 A1 WO2015140985 A1 WO 2015140985A1
Authority
WO
WIPO (PCT)
Prior art keywords
volume
shielding gas
hydrogen
helium
brazing
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.)
Ceased
Application number
PCT/JP2014/057747
Other languages
English (en)
Japanese (ja)
Inventor
吉田　佳史
正信 石井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Iwatani Corp
Original Assignee
Iwatani Corp
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
Application filed by Iwatani Corp filed Critical Iwatani Corp
Priority to PCT/JP2014/057747 priority Critical patent/WO2015140985A1/fr
Priority to JP2014542028A priority patent/JP5753951B1/ja
Publication of WO2015140985A1 publication Critical patent/WO2015140985A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

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
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • 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
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/16—Arc welding or cutting making use of shielding gas
    • B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
    • 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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/18—Sheet panels
    • 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
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys

Definitions

  • the present invention relates to a shielding gas for MIG brazing, and more specifically to a shielding gas for MIG brazing used for MIG brazing of steel using a brazing material made of an alloy containing copper as a main component.
  • arc welding such as MIG (Metal Inert Gas) welding is widely used.
  • MIG welding an arc is generated by applying a voltage between a steel material to be joined and a filler material such as a welding wire, and the steel material and the filler material are melted by the heat of the arc. Then, joining of steel materials is achieved by solidifying the molten steel material and filler metal. At this time, if the molten steel material and filler metal come into contact with air, defects such as blow holes occur after welding. Therefore, in MIG welding, an inert gas such as argon is supplied as a shielding gas to the melted portion. Thereby, joining of steel materials can be achieved, suppressing generation
  • MIG brazing is used in which a brazing material such as a wire containing copper as a main component is used in place of a filler material such as a welding wire and steel joining is achieved. is there.
  • an arc is generated by applying a voltage between a steel material to be joined and a brazing material such as a wire made of an alloy containing copper as a main component.
  • a brazing material having a melting point lower than that of a steel material is used. And it joins so that only a brazing material may fuse
  • joining of steel materials can be achieved while suppressing the occurrence of distortion.
  • ⁇ ⁇ ⁇ ⁇ Argon is generally used as the shielding gas for MIG brazing.
  • a technique for stabilizing an arc by adding an oxidizing gas such as oxygen or carbon dioxide to a shielding gas has been proposed (see, for example, Patent Documents 1 to 8).
  • the present invention has been made to cope with such problems, and an object of the present invention is to provide a shielding gas for MIG brazing capable of improving the finished state.
  • the shield gas for MIG brazing according to the present invention is a shield gas for MIG brazing used for MIG brazing of a steel material using a brazing material made of an alloy containing copper as a main component.
  • This shielding gas for MIG brazing contains 7% by volume or more and less than 20% by volume helium and 2% by volume or more and 4% by volume or less hydrogen, or 20% by volume or more and 30% by volume or less helium and 2% by volume or more. It contains 5% by volume or less of hydrogen, and the balance consists of argon.
  • the present inventors examined the composition of a shielding gas that can not only suppress defects in the joint (bead) in MIG brazing but also ensure gloss.
  • a shielding gas that can not only suppress defects in the joint (bead) in MIG brazing but also ensure gloss.
  • helium and hydrogen are mixed in an appropriate ratio with argon, and a mixed gas not containing an oxidizing gas such as oxygen or carbon dioxide is used as a shielding gas, so that gloss is reduced while suppressing defects in the joint. It was found that it can be secured. More specifically, when helium is 7% by volume to 30% by volume, hydrogen is 2% by volume to 4% by volume, and when helium is 20% by volume to 30% by volume, hydrogen is 2% by volume.
  • the gloss can be secured while suppressing defects in the joint portion by setting the remaining amount to not less than 5% and not more than 5% by volume and argon as the remainder. In other words, it contains 7% to 20% helium and 2% to 4% hydrogen, or 20% to 30% helium and 2% to 5% helium.
  • a mixed gas containing hydrogen and the balance consisting of argon as the shielding gas it is possible to secure gloss while suppressing defects in the joint.
  • the shielding gas for MIG brazing of the present invention contains 7% to 20% helium and 2% to 4% hydrogen, or 20% to 30% helium and 2% by volume. % To 5% by volume of hydrogen with the balance being argon. Therefore, according to the shielding gas for MIG brazing of this invention, the shielding gas for MIG brazing which can improve a finishing state can be provided.
  • the hydrogen content is preferably set to exceed 2% by volume, for example, 3% by volume or more.
  • the steel material may be a steel plate having a thickness of 0.8 mm or less. Even such a thin steel plate can be joined while securing a good finished state by MIG brazing using the shielding gas for MIG brazing.
  • the steel material may be galvanized. That is, the steel material by which at least 1 was galvanized among the some steel materials which should be joined mutually may be sufficient.
  • MIG brazing of a galvanized steel material such as a galvanized steel sheet
  • the arc becomes unstable due to the generation of zinc vapor, and it is difficult to ensure the gloss of the joint.
  • the MIG brazing shield gas of the present invention it is possible to ensure the gloss of the joint.
  • the shield gas for MIG brazing may be enclosed in a container at a pressure higher than atmospheric pressure.
  • the shielding gas for MIG brazing may be manufactured and used by mixing helium, hydrogen, and argon in a place where MIG brazing is performed.
  • the shielding gas for MIG brazing of the present invention is manufactured by mixing helium, hydrogen and argon in advance, and is transported to a place where MIG brazing is carried out while being held in a container at a pressure higher than atmospheric pressure. , May be used.
  • the pressure in the container is preferably 5 MPa or more at 35 ° C., more preferably 10 MPa or more.
  • the shield gas for MIG brazing of the present invention it is possible to provide a shield gas for MIG brazing capable of improving the finished state.
  • the shield gas for MIG welding in the present embodiment can be manufactured by filling a container such as a cylinder as follows, for example. First, the inside of the container to be filled with the shielding gas is depressurized to a desired level. Next, hydrogen gas is supplied into the container, and the pressure in the container is such that the ratio of hydrogen in the shield gas is 2% by volume to 4% by volume, or 2% by volume to 5% by volume. As such, the container is filled with hydrogen.
  • helium is supplied into the container filled with hydrogen as described above, and the pressure in the container is such that the proportion of helium in the combustible gas is 7% by volume or more and less than 20% by volume, or 20% by volume or more and 30% by volume.
  • the container is filled with helium so as to obtain a pressure necessary for the following.
  • argon is supplied into the container filled with hydrogen and helium as described above. Accordingly, 7 to 20% by volume of helium and 2 to 4% by volume of hydrogen are contained, or 20 to 30% by volume of helium and 2 to 5% by volume of helium.
  • the container is filled with a shielding gas containing hydrogen and the balance being argon.
  • the pressure in the said container is 1 MPa or more and 14.7 MPa or less in 35 degreeC. In this way, when the shielding gas is filled in the container, the container can be transported and can be easily used as a shielding gas for MIG brazing of steel.
  • a steel material (steel member) is prepared (S10).
  • a first steel plate 21 and a second steel plate 22 to be joined together are prepared.
  • at least one of the first steel plate 21 and the second steel plate 22 may be a galvanized steel plate in which it is difficult to ensure the gloss of the joint.
  • both the first steel plate 21 and the second steel plate 22 may be galvanized steel plates, one is a galvanized steel plate, and the other is zinc such as a JIS standard SPCC steel plate or stainless steel plate.
  • a steel plate other than the plated steel plate may be used.
  • both the 1st steel plate 21 and the 2nd steel plate 22 may be steel plates other than galvanized steel plates, such as a JIS standard SPCC steel plate and a stainless steel plate.
  • the thickness of at least one or both of the first steel plate 21 and the second steel plate 22 may be 0.8 mm or less, and may be 0.6 mm or less.
  • a part of one main surface 21A of the first steel plate 21 and a part of one main surface 22A of the second steel plate face each other. In this way, they are arranged so that a part of each other overlaps.
  • an arc is formed between a wire which is a brazing material made of an alloy containing copper as a main component (copper alloy), for example, a CuSi3 wire, and the first steel plate 21 and the second steel plate 22. Is formed (S20).
  • the wire 12 made of a copper alloy is held so as to pass through the nozzle 11, and its end is exposed from the end 11 ⁇ / b> A of the nozzle 11.
  • the wire 12 is connected to a positive electrode (not shown).
  • the first steel plate 21 and the second steel plate 22 are connected to a negative electrode (not shown).
  • the wire 12 is melted by the heat of the formed arc ⁇ , and a copper alloy that is a brazing material is supplied to the joint.
  • the copper alloy supplied to the joint forms a bead 31.
  • the copper alloy supplied to the joint enters the gap between the first steel plate 21 and the second steel plate 22 by capillary action.
  • the nozzle 11 is moved along the shape of the region where the desired bead 31 is to be formed, and the brazing material is supplied to the desired portion (S30). Thereby, the bead 31 is formed along the region to be joined.
  • the voltage applied between the electrodes is released, the supply of the brazing material is stopped, and the supplied brazing material is cooled and solidified (S40). Thereby, the 1st steel plate 21 and the 2nd steel plate 22 are joined. With the above procedure, the MIG brazing in the present embodiment is completed.
  • the shielding gas contains 7% to 20% by volume of helium and 2% to 4% by volume of hydrogen, or 20% to 30% by volume of helium.
  • MIG brazing shielding gas is used, which contains 2 vol% or more and 5 vol% or less of hydrogen and the balance is argon. Therefore, gloss can be ensured while suppressing defects in the bead 31 that is the joint. As a result, not only is the bead excellent in aesthetic appearance, but also post-processing such as painting can be easily performed.
  • the shield gas for MIG brazing of the present invention can be applied particularly advantageously to MIG brazing of steel using a brazing material made of an alloy containing copper as a main component.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Arc Welding In General (AREA)

Abstract

L'invention concerne un gaz de protection (α) pour le brasage MIG de matériaux en acier (21, 22) au moyen d'un matériau de brasage (12) constitué d'un alliage contenant du cuivre comme composant principal. Ce gaz de protection (α) contient de 7 à 20 % (non compris) en volume d'hélium et de 2 à 4 % en volume d'hydrogène, ou contient de 20 à 30 % en volume d'hélium et de 2 à 5 % en volume d'hydrogène, le reste étant constitué d'argon. Le gaz de protection selon l'invention permet d'obtenir une finition améliorée.
PCT/JP2014/057747 2014-03-20 2014-03-20 Gaz de protection pour brasage mig Ceased WO2015140985A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2014/057747 WO2015140985A1 (fr) 2014-03-20 2014-03-20 Gaz de protection pour brasage mig
JP2014542028A JP5753951B1 (ja) 2014-03-20 2014-03-20 Ｍｉｇブレージング用シールドガス

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2014/057747 WO2015140985A1 (fr) 2014-03-20 2014-03-20 Gaz de protection pour brasage mig

Publications (1)

Publication Number Publication Date
WO2015140985A1 true WO2015140985A1 (fr) 2015-09-24

Family

ID=53638129

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2014/057747 Ceased WO2015140985A1 (fr) 2014-03-20 2014-03-20 Gaz de protection pour brasage mig

Country Status (2)

Country Link
JP (1) JP5753951B1 (fr)
WO (1) WO2015140985A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09234563A (ja) * 1996-02-29 1997-09-09 Chiyoda Corp 固定管の周継ぎ手形成方法
JP2009545449A (ja) * 2006-08-03 2009-12-24 レール・リキード−ソシエテ・アノニム・プール・レテュード・エ・レクスプロワタシオン・デ・プロセデ・ジョルジュ・クロード 制御された周波数にて溶滴での金属移行を用いたｔｉｇブレーズ溶接

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09234563A (ja) * 1996-02-29 1997-09-09 Chiyoda Corp 固定管の周継ぎ手形成方法
JP2009545449A (ja) * 2006-08-03 2009-12-24 レール・リキード−ソシエテ・アノニム・プール・レテュード・エ・レクスプロワタシオン・デ・プロセデ・ジョルジュ・クロード 制御された周波数にて溶滴での金属移行を用いたｔｉｇブレーズ溶接

Also Published As

Publication number Publication date
JP5753951B1 (ja) 2015-07-22
JPWO2015140985A1 (ja) 2017-04-06

Similar Documents

Publication Publication Date Title
JP5869972B2 (ja) レーザ・アーク複合溶接法
JP5236566B2 (ja) 固定鋼管の円周溶接方法
JP5884209B1 (ja) 立向き狭開先ガスシールドアーク溶接方法
JP6263296B2 (ja) 異種材料溶接用ワイヤ及びその製造方法
CN103118827A (zh) 复合焊接方法及复合焊接用焊接吹管
JP5416422B2 (ja) レーザ・アーク複合溶接法
CN108367376B (zh) 立式窄坡口气体保护弧焊方法
CN108290239A (zh) 立式窄坡口气体保护弧焊方法
JP2001038472A (ja) ステンレスクラッド鋼板の溶接方法
WO2006132373A1 (fr) Fil de soudage et procédé de soudage
JP5968934B2 (ja) 亜鉛めっき鋼板の溶接方法
JP5753951B1 (ja) Ｍｉｇブレージング用シールドガス
KR101164756B1 (ko) 용접용 플럭스 함유 와이어
JP5287656B2 (ja) 亜鉛系めっき鋼板の重ねすみ肉アーク溶接方法及び重ねすみ肉アーク溶接継手
JP5236337B2 (ja) 薄鋼板のパルスｍａｇ溶接用ソリッドワイヤ
JP2006341313A (ja) アルゴン／ヘリウム／水素混合物を用いたｔｉｇブレーズ溶接方法
JP5303112B2 (ja) Ｍｉｇ溶接方法
JP5483553B2 (ja) レーザ・アーク複合溶接法
JP5086881B2 (ja) 薄鋼板の高速ガスシールドアーク溶接方法
JP2013212532A (ja) アーク溶接用シールドガス
US20200164472A1 (en) Wire for welding different types of materials and method of manufacturing the same
JP2007090386A (ja) 両面溶接方法及びその溶接構造物
KR101169315B1 (ko) 용가재 합금 조성물 및 표면처리 강판의 아크 브레이징 방법
JP6119949B1 (ja) 立向き狭開先ガスシールドアーク溶接方法
CN115870620A (zh) 单面对接焊方法和焊接接头的制造方法

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2014542028

Country of ref document: JP

Kind code of ref document: A

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14886510

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14886510

Country of ref document: EP

Kind code of ref document: A1