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WO2018159844A1 - Procédé de soudage à l'arc - Google Patents

Procédé de soudage à l'arc Download PDF

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Publication number
WO2018159844A1
WO2018159844A1 PCT/JP2018/008165 JP2018008165W WO2018159844A1 WO 2018159844 A1 WO2018159844 A1 WO 2018159844A1 JP 2018008165 W JP2018008165 W JP 2018008165W WO 2018159844 A1 WO2018159844 A1 WO 2018159844A1
Authority
WO
WIPO (PCT)
Prior art keywords
welding
less
wire
mass
welding method
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/JP2018/008165
Other languages
English (en)
Japanese (ja)
Inventor
光 木梨
悠 梅原
佐藤　浩二
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 JP2017063694A external-priority patent/JP6892302B2/ja
Priority claimed from JP2017069238A external-priority patent/JP6892305B2/ja
Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to MX2019010305A priority Critical patent/MX2019010305A/es
Priority to US16/489,371 priority patent/US20190375038A1/en
Priority to CN201880014586.3A priority patent/CN110402177B/zh
Publication of WO2018159844A1 publication Critical patent/WO2018159844A1/fr
Anticipated expiration legal-status Critical
Priority to US17/358,492 priority patent/US20210316386A1/en
Ceased legal-status Critical Current

Links

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
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/09—Arrangements or circuits for arc welding with pulsed current or voltage
    • 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
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • 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
    • B23K9/06—Arrangements or circuits for starting the arc, e.g. by generating ignition voltage, or for stabilising the arc
    • B23K9/073—Stabilising the arc
    • 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
    • B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
    • 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 an arc welding method.
  • an arc welding method capable of reducing the occurrence of spatter during welding of a thin steel plate an arc welding method in which welding is performed while controlling feeding in the forward and backward directions of the wire and a pulse control type arc welding method are known.
  • Patent Document 1 as an arc welding method for suppressing the generation of pores such as blow holes and the generation of spatter, a short-circuit and an arc are repeatedly arced using a welding wire for a surface-treated member.
  • a welding method for performing welding is disclosed. This welding method includes a step of transferring a droplet formed from a wire to the member side, and pressing the molten pool in a direction opposite to the welding progress direction to weld the member so that gas generated from the member escapes from the generation point. And steps.
  • the distance between the wire and the molten pool is set within a predetermined range, a predetermined welding current for generating an arc force for pushing the molten pool is supplied, and the welding current is supplied for a predetermined period. In the meantime, it is constant or gradually increases or decreases.
  • a welding wire having a predetermined chemical composition is used as a welding method that generates less spatter during welding and has excellent welding workability, and a mixture of an inert gas and carbon dioxide gas is used.
  • a gas shielded arc welding method is disclosed in which pulse mag welding is performed by a pulse arc method using a gas as a shielding gas.
  • the pulse frequency is preferably controlled to 60 to 120 Hz from the viewpoint of suppressing spatter generation and preventing welding defects.
  • the pulse width is preferably controlled to 1.0 to 1.3 msec.
  • an electrodeposition coating process may be carried out after arc welding on steel plates used in automobiles, building materials, electrical equipment, and the like.
  • the slag does not sufficiently aggregate in the welded part during arc welding, the slag remains in the welded part.
  • adhesiveness of the coating film formed by subsequent electrodeposition coating cannot fully be ensured. Therefore, in such a use, it is calculated
  • the present invention has been made paying attention to the above-mentioned circumstances, and the object thereof is to provide an arc welding method capable of reducing the occurrence of spatter and improving the slag cohesiveness while increasing the welding speed. There is to do.
  • the first embodiment of the present invention is an arc welding method for welding a steel sheet while controlling the feeding of the welding wire in the forward and backward direction, Containing C, % By mass Si: 0.2% to 1.3%, Mn: 0.2% or more and 1.5% or less, and S: 0.01% or more and 0.05% or less, A welding wire with the balance being Fe and inevitable impurities; Using a gas containing Ar, The present invention relates to an arc welding method in which welding is performed with a frequency in the advancing and retreating direction of the welding wire being 35 Hz to 160 Hz.
  • the welding wire is in mass%, further Al: 0.1% to 0.5%, Mo: 0.1% to 2.0%, Ti : 0.3% or less, Cu: 0.4% or less may be contained.
  • the contents of S and Al in the welding wire may satisfy 0.3 ⁇ S ⁇ 10 + Al ⁇ 0.7.
  • the plate thickness of the steel plate may be not less than 0.6 mm and not more than 5 mm.
  • welding may be performed with the frequency in the advancing / retreating direction of the welding wire being 45 Hz to 130 Hz, more preferably 70 Hz to 110 Hz.
  • welding may be performed with an average value of welding current of 80 A or more and 350 A or less and a welding speed of 60 cm / min or more.
  • the second embodiment of the present invention is an arc welding method for arc welding a steel plate by a pulse control method, Containing C, % By mass Si: 0.2% to 1.1%, Mn: 0.2% or more and 1.4% or less, and S: 0.010% or more and 0.050% or less, A welding wire with the balance being Fe and inevitable impurities; Using a gas containing Ar, The present invention relates to an arc welding method in which welding is performed with a voltage pulse frequency of 50 Hz to 200 Hz and a voltage pulse width of 1.5 ms to 10 ms.
  • the welding wire is in mass%, further Al: 0.1% to 0.5%, Mo: 0.1% to 2.0%, Cu : 0.4% or less may be contained.
  • welding may be performed with a peak current of 380 A or more and 490 A or less.
  • welding may be performed with the base current set to 80 A or more and 180 A or less.
  • welding may be performed with the duty ratio of the pulse current set to 0.2 or more and 0.6 or less.
  • the plate thickness of the steel plate may be not less than 0.6 mm and not more than 5 mm.
  • the generation of spatter can be reduced, and the slag cohesiveness can be improved while increasing the welding speed.
  • An arc welding method according to the first embodiment of the present invention (hereinafter also referred to as a welding method according to the first embodiment) is an arc welding method in which a steel wire is welded while feeding control of a welding wire in the forward / backward direction is performed.
  • a welding method according to the first embodiment is an arc welding method in which a steel wire is welded while feeding control of a welding wire in the forward / backward direction is performed.
  • Si 0.2% to 1.3%
  • Mn 0.2% to 1.5%
  • S 0.01% to 0.05
  • arc welding is performed while controlling feeding in the advance and retreat direction of the wire. More specifically, while controlling the feeding of the wire in the forward and backward direction, the wire is advanced (forward feeding) while generating an arc, and the molten metal at the tip of the molten wire is brought into contact with the molten pool to extinguish the arc. Thereafter, the wire is moved backward (reversely fed) to transfer the molten metal.
  • the frequency in the wire advance / retreat direction in the welding method according to the first embodiment is defined as one forward (forward feed) and backward (reverse feed) of the wire as one cycle.
  • the welding method according to the first embodiment includes, for example, Cold Metal Transfer welding.
  • (C) C is an element that improves the strength.
  • the content of C should be more than 0%.
  • 0.02 mass. % Or more is preferable, and 0.04% by mass or more is more preferable.
  • the upper limit of the C content is not particularly limited, but from the viewpoint of suppressing spatter reduction and high-temperature cracking, the C content is preferably 0.15% by mass or less, more preferably 0.10% by mass or less. preferable.
  • Si is an effective deoxidizer and is an indispensable element in deoxidation of weld metal.
  • the Si content is 0.2% by mass or more, preferably 0.3% by mass or more, and more preferably 0.5% by mass or more.
  • Si has a feature that the electrical resistance of the wire decreases as the content decreases, and the wire is less likely to melt as the electrical resistance of the wire decreases (the electrical resistance heat decreases).
  • the Si content exceeds 1.3% by mass, the amount of slag generated on the bead surface increases, and the slag cohesiveness also decreases. Therefore, the Si content is 1.3% by mass or less, preferably 1.2% by mass or less, more preferably 1.0% by mass or less.
  • Mn Mn is an effective deoxidizer similar to Si, and is an element that easily binds to S.
  • the Mn content is 0.2% by mass or more, preferably 0.3% by mass or more, and more preferably 0.5% by mass or more.
  • the Mn content is 1.5% by mass or less, preferably 1.3% by mass or less, more preferably 1.1% by mass or less.
  • (S) S is an element that contributes to the aggregation of slag, but if it is less than 0.01% by mass, the effect cannot be obtained, so the S content is 0.01% by mass or more, preferably 0.02% by mass. That's it.
  • the S content exceeds 0.05 mass%, the flow on the surface of the molten pool is greatly changed, and as a result of the slag coming close to the vicinity of the arc and greatly vibrating, the agglomeration effect is lowered. Therefore, the S content is 0.05% by mass or less, preferably 0.04% by mass or less.
  • the remainder of the wire according to the first embodiment is made of Fe and unavoidable impurities.
  • the unavoidable impurities include P, Cr, Ni, N, O, and the like, as long as the effects of the present invention are not hindered. It is allowed to contain.
  • At least one of the following components may be added to the wire according to the first embodiment.
  • Al Al is an element that contributes to slag aggregation.
  • the addition of Al is not essential, but when the Al content is less than 0.1% by mass, it is difficult to obtain a coagulation effect of slag.
  • the content is preferably 0.1% by mass or more, and more preferably 0.2% by mass or more.
  • the Al content exceeds 0.5% by mass, droplet detachment becomes unstable, vibration of the molten pool is disturbed, and as a result of frequent spattering, the slag aggregation effect may be reduced. Therefore, when adding Al, it is preferable to make the content into 0.5 mass% or less, and it is more preferable to set it as 0.4 mass% or less.
  • Mo Mo is an element that contributes to improvement in strength.
  • the addition of Mo is not essential, but in order to exert such an effect well, when adding Mo, the content may be 0.1% by mass or more. Preferably, it is more preferably 0.3% by mass or more.
  • Mo exceeds 2.0 mass%, the effect is saturated because Fe and an intermetallic compound are formed at a high temperature. Therefore, when adding Mo, it is preferable to make the content into 2.0 mass% or less, and it is more preferable to set it as 1.5 mass% or less.
  • Ti is a strong deoxidizing element and can reduce the amount of oxygen in the molten metal and reduce the surface tension. Therefore, it is effective when the amount of oxygen in the wire is high. However, if added over 0.3 mass%, a large amount of slag is generated. Therefore, when adding Ti, the content is preferably 0.3% by mass or less, and more preferably 0.2% by mass or less.
  • (Cu) Cu is an element that is effective in improving the electrical conductivity and rust resistance.
  • the lower limit value of the content is not particularly limited, but is preferably 0.1% by mass or more in order to obtain this effect more favorably.
  • content of Cu is 0.4 mass% or less from a viewpoint of suppressing generation
  • the wire of the first embodiment may be subjected to Cu plating if desired.
  • Cu is a value obtained by adding up the amount contained in the base material of the wire and the amount of Cu plating.
  • the S and Al contents preferably satisfy the following relational expression.
  • the slag cohesiveness can be further improved by adjusting the S and Al contents so as to satisfy the relational expression.
  • the diameter of the wire is not particularly limited, and may be appropriately selected from a range that is usually applied.
  • the diameter of the wire is, for example, 0.8 mm to 1.4 mm. The same applies to a second embodiment described later.
  • Wire production method As a method for manufacturing the wire, for example, a steel wire having a predetermined composition may be drawn to a predetermined diameter.
  • the wire drawing process may be either a method using a hole die or a method using a roller die.
  • you may wire-draw after Cu plating. The same applies to a second embodiment described later.
  • the shield gas used in the welding method according to the first embodiment only needs to contain Ar, and may consist only of Ar.
  • Ar in addition to Ar, CO 2 , O 2, or the like may be contained.
  • the shield gas can also contain N 2 , H 2, etc. as inevitable impurities.
  • the content ratio of Ar is preferably 70% by volume or more, and more preferably 80% by volume or more.
  • the shielding gas may be composed only of Ar (that is, the Ar content may be 100% by volume).
  • the Ar content may be 70% by volume or less. . The same applies to a second embodiment described later.
  • the frequency in the forward / backward direction of the wire is controlled to be 35 Hz or more and 160 Hz or less.
  • the present inventors have found that the natural frequency of the molten metal is about several tens of Hz, and by controlling the frequency in the advancing and retreating direction of the wire to an appropriate range so as to match the natural frequency of the molten pool, It has been found that the vibration of the molten pool surface becomes optimal, the hot water flow on the molten pool surface changes so as to involve slag, and the slag cohesiveness can be improved.
  • the frequency in the wire advance / retreat direction is less than 35 Hz, short circuit occurs frequently in the peak current period, regular droplet transfer cannot be performed, the molten pool vibration is disturbed, and good slag cohesiveness cannot be obtained.
  • the frequency in the advancing / retreating direction of the wire is 35 Hz or more, preferably 45 Hz or more, more preferably 70 Hz or more.
  • the frequency in the wire advance / retreat direction exceeds 160 Hz, the effect of depressing the molten pool by the arc in the peak period is reduced, and sufficient molten pool amplitude cannot be obtained, and good slag cohesiveness is obtained. Therefore, the frequency in the advancing / retreating direction of the wire is 160 Hz or less, preferably 150 Hz or less, more preferably 130 Hz or less, and further preferably 110 Hz or less.
  • the base material to be welded may be a steel plate, and the composition and thickness of the steel plate are not particularly limited.
  • the thickness is 0.6 mm or more and 5.0 mm or less. It can also be applied to thin steel sheets.
  • the steel type may be, for example, mild steel or high-tensile steel up to 590 MPa class.
  • the surface of the base material may be subjected to various plating treatments such as galvanization and aluminum plating. The same applies to a second embodiment described later.
  • each welding condition in the welding method according to the first embodiment such as a welding current, a welding voltage, a welding speed, and a welding posture, is not particularly limited, and may be appropriately adjusted within a range applicable in the arc welding method.
  • the average value of the welding current is, for example, 80 A or more and 350 A or less, and preferably 100 A or more and 300 A or less.
  • a welding speed it is 60 cm / min or more, for example. According to the welding method according to the first embodiment, welding can be performed with good slag cohesion even under these welding conditions.
  • An arc welding method according to a second embodiment of the present invention (hereinafter also referred to as a welding method according to the second embodiment) is an arc welding method in which a steel plate is arc-welded by a pulse control method, and contains C. In addition, by mass%, Si: 0.2% to 1.1%, Mn: 0.2% to 1.4%, and S: 0.010% to 0.050%, the balance An arc welding method in which welding is performed using a welding wire made of Fe and inevitable impurities and a gas containing Ar, with a voltage pulse frequency of 50 Hz to 200 Hz and a voltage pulse width of 1.5 ms to 10 ms. is there.
  • Mn Lower limit: 0.2% by mass or more, preferably 0.3% by mass or more, more preferably 0.5% by mass or more, and upper limit: 1.4% by mass or less, preferably 1.3% by mass or less, more preferably 1. 1% by mass or less
  • S Lower limit: 0.010 mass% or more, preferably 0.020 mass% or more
  • the remainder of the wire according to the second embodiment is made of Fe and unavoidable impurities, and examples of the unavoidable impurities include Ti, P, Cr, Ni, N, O, and the like, and do not hinder the effects of the present invention. It is allowed to contain in a range.
  • at least one of Al, Mo, and Cu may be added to the wire according to the second embodiment. Is the same as in the first embodiment.
  • the voltage pulse frequency (hereinafter, also simply referred to as pulse frequency) is 50 Hz to 200 Hz, and the voltage pulse width (hereinafter simply referred to as pulse).
  • the pulse is controlled so that the width is also 1.5 ms to 10 ms.
  • the inventors have found that the natural frequency of the molten metal is about several tens of Hz, and by controlling the frequency and width of the pulse within an appropriate range so as to match the natural frequency of the droplet, It has been found that the vibration of the molten pool becomes optimal, the hot water flow on the surface of the molten pool changes so as to involve slag, and the slag cohesiveness can be improved.
  • the pulse frequency exceeds 200 Hz and / or the pulse width is less than 1.5 ms, the effect of depressing the molten pool by the arc in the peak period is reduced, and sufficient molten pool amplitude cannot be obtained. It will be difficult to obtain good slag cohesiveness.
  • the pulse frequency is 200 Hz or less and the pulse width is 1.5 ms or more.
  • the pulse frequency is preferably 180 Hz or less, more preferably 150 Hz or less.
  • the pulse width is preferably 3 ms or more, more preferably 5 ms or more.
  • the pulse frequency is 50 Hz or more and the pulse width is 10 ms or less.
  • the pulse frequency is preferably 55 Hz or more, more preferably 60 Hz or more.
  • the pulse width is preferably 9 ms or less, more preferably 8 ms or less.
  • the peak current is not particularly limited, but is preferably 380 A or more and 490 A or less from the following viewpoints. That is, if the peak current is less than 380 A, there is a possibility that an arc force sufficient to push down the molten pool cannot be obtained. Therefore, the peak current is preferably 380 A or more, more preferably 400 A or more, and further preferably 410 A or more.
  • the peak current is preferably 490 A or less, more preferably 480 A or less, and even more preferably 460 A or less.
  • the base current is not particularly limited, but is preferably 80 A or more and 180 A or less from the following viewpoints. That is, if the base current is less than 80 A, the range of the execution current may be greatly limited. Therefore, the base current is preferably 80 A or more, more preferably 90 A or more, and further preferably 100 A or more. On the other hand, when the base current exceeds 180 A, the amount of heat input becomes excessive, and there is a possibility that the burnout is likely to occur when the thin plate is welded. Accordingly, the base current is preferably 180 A or less, more preferably 160 A or less, and even more preferably 150 A or less.
  • the duty ratio of the pulse current is not particularly limited, but is preferably 0.2 to 0.6 from the following viewpoints. That is, when the duty ratio is less than 0.2, the peak current period becomes too short compared with the base current period, and the effect of pushing down the molten pool by the arc cannot be sufficiently obtained, and the molten pool can be sufficiently vibrated. As a result, the slag aggregation effect may be reduced. Therefore, the duty ratio of the pulse current is preferably 0.2 or more, and more preferably 0.3 or more.
  • the duty ratio of the pulse current is preferably 0.6 or less, more preferably 0.5 or less.
  • the average current of the pulse current is not particularly limited, and is appropriately determined according to the respective preferable ranges of the peak current, the base current, and the duty ratio described above. It only has to be decided.
  • the average current of the pulse current is, for example, 250 A or more and 350 A or less.
  • the welding conditions such as the welding speed and the welding posture in the welding method according to the second embodiment are not particularly limited, and may be appropriately adjusted within a range applicable in the arc welding method.
  • a welding speed it is 70 cm / min or more, for example. According to the welding method according to the second embodiment, welding can be performed with good slag cohesion even if the welding speed is increased.
  • wire component (mass%) represents each component amount (mass%) per total mass of the wire. “-” Means that the content is less than the detection limit. Further, the Cu content shown in Tables 2 and 3 includes a Cu plating content. The balance is Fe and inevitable impurities.
  • Examples 1 to 60 are examples, and Examples 21 to 29 and Examples 52 to 60 are comparative examples. As shown in Tables 1 and 2, in Examples 1 to 20 and Examples 30 to 51, good slag cohesion was obtained.
  • Example 21 and 52 the S content in the wire was too low, and in Examples 22 and 53, the S content in the wire was too high, so the slag cohesiveness deteriorated.
  • Example 23 and Example 54 the frequency in the wire advance / retreat direction was too large, and in Example 24 and Example 55, the frequency in the wire advance / retreat direction was too small, so the slag cohesiveness deteriorated.
  • Example 25 and 56 the Si content in the wire was too low, and in Examples 26 and 57, the Si content in the wire was too high, so the slag cohesiveness deteriorated.
  • Example 27 and 58 the Mn content in the wire was too low, and in Examples 28 and 59, the Mn content in the wire was too high, so the slag cohesiveness deteriorated.
  • Example 29 and Example 60 100% CO 2 gas containing no Ar was used as the shielding gas, so the slag cohesiveness deteriorated.
  • the column of “slag aggregation ratio (% by weight)” in Table 3 shows an example in which the ratio of slag existing (aggregated) in the vicinity of the crater portion was less than 60% by weight and the slag aggregation was poor. The result is described as “x” and the ratio is omitted.
  • Examples 61 to 93 are examples, and Examples 83 to 93 are comparative examples. As shown in Table 3, in Examples 61 to 82, good slag cohesion was obtained. The bead appearance was also good.
  • Example 83 the S content in the wire was too low, and in Example 84, the S content in the wire was too high, so the slag cohesiveness deteriorated.
  • Example 85 the slag cohesiveness deteriorated because the pulse frequency was too large.
  • Example 86 since the pulse frequency was too small, the slag cohesiveness deteriorated and the bead appearance was poor.
  • Example 87 since the Si content in the wire was too small, the slag cohesiveness deteriorated and the bead appearance was poor.
  • Example 88 since there was too much Si content in a wire, slag cohesiveness deteriorated.
  • Example 89 the Mn content in the wire was too low, and in Example 90, the Mn content in the wire was too high, so the slag cohesiveness deteriorated.
  • Example 91 since using 100% CO 2 gas not containing Ar as the shield gas, slag cohesiveness is deteriorated.
  • Example 92 since the pulse width was too small, the slag aggregation was deteriorated.
  • Example 93 the pulse width was too large, and the Mn content in the wire was too large, so the slag cohesiveness deteriorated and the bead appearance was poor.

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

Abstract

Le but de la présente invention est de fournir un procédé de soudage à l'arc avec lequel la génération d'éclaboussures peut être réduite, et qui assure une bonne agglomération de quantité de matière même à un taux de soudage élevé. Un mode de réalisation de la présente invention concerne un procédé de soudage à l'arc destiné à souder une tôle d'acier alors qu'un fil de soudage est commandé en avant et en arrière. Le procédé de soudage à l'arc comprend la réalisation du soudage en utilisant : un fil de soudage qui contient C et, en % massique, pas moins de 0,2 % et pas plus de 1,3 % de Si, pas moins de 0,2 % et pas plus de 1,5 % de Mn, et pas moins de 0,01 % et pas plus de 0,05 % de S, le reste comprenant du Fe et des impuretés inévitables; et un gaz comprenant Ar. La fréquence du fil de soudage dans les directions avant et arrière n'est pas inférieure à 35 Hz et ne dépasse pas 160 Hz.
PCT/JP2018/008165 2017-03-02 2018-03-02 Procédé de soudage à l'arc Ceased WO2018159844A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
MX2019010305A MX2019010305A (es) 2017-03-02 2018-03-02 Procedimiento de soldeo por arco.
US16/489,371 US20190375038A1 (en) 2017-03-02 2018-03-02 Arc welding method
CN201880014586.3A CN110402177B (zh) 2017-03-02 2018-03-02 电弧焊方法
US17/358,492 US20210316386A1 (en) 2017-03-02 2021-06-25 Arc welding method

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2017-039845 2017-03-02
JP2017039845 2017-03-02
JP2017-063694 2017-03-28
JP2017063694A JP6892302B2 (ja) 2017-03-28 2017-03-28 アーク溶接方法
JP2017-069238 2017-03-30
JP2017069238A JP6892305B2 (ja) 2017-03-02 2017-03-30 アーク溶接方法

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US16/489,371 A-371-Of-International US20190375038A1 (en) 2017-03-02 2018-03-02 Arc welding method
US17/358,492 Division US20210316386A1 (en) 2017-03-02 2021-06-25 Arc welding method

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WO2018159844A1 true WO2018159844A1 (fr) 2018-09-07

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