CN104227264B - The surface treatment oil for solid wire for gas shielded arc welding of high strength steel - Google Patents

The surface treatment oil for solid wire for gas shielded arc welding of high strength steel Download PDF

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Publication number
CN104227264B
CN104227264B CN201310248542.6A CN201310248542A CN104227264B CN 104227264 B CN104227264 B CN 104227264B CN 201310248542 A CN201310248542 A CN 201310248542A CN 104227264 B CN104227264 B CN 104227264B
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welding wire
welding
weld metal
strength steel
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CN104227264A (en
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木本勇
斋藤雅哉
大塚贵之
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Nippon Steel Welding and Engineering Co Ltd
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Nippon Steel Welding and Engineering Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24Selection of soldering or welding materials proper
    • B23K35/30Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3053Fe as the principal constituent
    • B23K35/3066Fe as the principal constituent with Ni as next major constituent

Abstract

The present invention provides the surface treatment oil for solid wire for gas shielded arc welding of a kind of high strength steel; it can obtain having suitable intensity and particularly at the weld metal of good and stable toughness of low-temperature region in the welding of 780MPa grade high-strength steel, and weld job is excellent simultaneously.Above-mentioned solid core welding wire is characterised by, containing C:0.02~0.10%, Si:0.20~0.55%, Mn:1.50~1.95%, Cu:0.15~0.45%, Ni:2.7~3.2%, Cr:0.35~0.65%, Mo:0.15~0.40%, Ti:0.02~0.10% based on quality % relative to welding wire gross mass, wherein, the Pts represented with following formula (1) is 0.73~0.95.Pts=[C]+[Si]/7+ [Mn]/5+ [Cu]/7+ [Ni]/20+ [Cr]/8+ [Mo]/2+ [Ti]/5 formula (1).

Description

The surface treatment oil for solid wire for gas shielded arc welding of high strength steel
Technical field
The present invention relates to the surface treatment oil for solid wire for gas shielded arc welding of 780MPa grade high-strength steel, particularly The gas shielded arc welding of the high strength steel relating to the good-toughness at low-temperature region of weld metal is real Core welding wire.
Background technology
In recent years, along with maximization and the light weight of the steel structures such as mansion, bridge, marine structure The increase of the requirement changed, the high intensity of the steel plate of use is developed, and generally uses tension recently strong Degree is the high strength steel of 780MPa level.
When the high strength steel using these tensile strength to be 780MPa level manufactures works, use more Hydrogen content is low, the gas-shielded arc welding method of resistance to anti-thread breakage excellent and applicable high efficiency.
In the past, the surface treatment oil for solid wire for gas shielded arc welding of high strength steel was such as public in patent documentation 1 institute As opening, use the high strength steel steel welding wire that with the addition of Ni, Cr, Mo etc. in right amount.But, specially Profit welding wire described in document 1 is TIG weld use, when welding for the MAG of consumable electrode type, Can not get toughness excellent under tensile strength and low temperature.
Additionally, Patent Document 2 discloses following technology: in addition to the compositions such as Ni, Cr, Mo, By content and the ratio thereof of the acid-solubility composition of Al and Ti with acid insoluble composition are limited especially Fixed, seek the miniaturization of the microscopic structure of weld metal, improve toughness.But, at patent documentation 2 Described technology also can not get toughness excellent under low temperature.
It addition, Patent Document 3 discloses following technology: as 490~780MPa grade high-strengths The gas shielded arc welding welding wire of steel, though temperature between high electric current, high heat input and high welding bead Under welding condition, it is also possible to stably guarantee the weld metal of toughness and good strength.But, patent In a low temperature of when welding wire described in document 3 cannot ensure to be applied to the steel plate that tensile strength is 780MPa level Toughness.
On the other hand, Patent Document 4 discloses that can to obtain tensile strength be more than 1200MPa's The gas shielded arc welding welding wire of the high-strength steel sheet of weld metal.But, institute in patent documentation 4 The carbon equivalent (Ceq) of the welding wire stated is high, and the tensile strength of weld metal is too high, thus cannot ensure The problem of the toughness under low temperature.
Prior art literature
Patent documentation
Patent documentation 1: Japanese Laid-Open Patent Publication 57-159293 publication
Patent documentation 2: Japanese Patent Publication 60-57953 publication
Patent documentation 3: Japanese Unexamined Patent Publication 2007-253163 publication
Patent documentation 4: Japanese Unexamined Patent Publication 2006-110581 publication
Summary of the invention
Invent problem to be solved
Therefore, the present invention completes for solving the problems referred to above, its object is to provide a kind of high-strength The surface treatment oil for solid wire for gas shielded arc welding of degree steel, it can in the welding of 780MPa grade high-strength steel Obtain having suitable intensity and particularly at the weld seam gold of good and stable toughness of low-temperature region Belonging to, weld job is excellent simultaneously.
For solving the means of problem
Idea of the invention is the surface treatment oil for solid wire for gas shielded arc welding of a kind of high strength steel, its feature Be, to contain based on quality % of welding wire gross mass: C:0.02~0.10%, Si:0.20~ 0.55%, Mn:1.50~1.95%, Cu:0.15~0.45%, Ni:2.7~3.2%, Cr:0.35~ 0.65%, Mo:0.15~0.40%, Ti:0.02~0.10%, wherein, represents with following formula (1) Pts is 0.73~0.95, and Al be less than 0.010%, P be less than 0.020%, S be 0.020% Below, N be less than 0.007%, O be less than 0.010%, remainder is by Fe and inevitably Impurity is constituted,
Pts=[C]+[Si]/7+ [Mn]/5+ [Cu]/7+ [Ni]/20+ [Cr]/8+ [Mo]/2+ [Ti]/5 formula (1)
In formula, [C], [Si], [Mn], [Cu], [Ni], [Cr], [Mo], [Ti] represent respectively C, Si, The content in terms of quality % of Mn, Cu, Ni, Cr, Mo, Ti.
Additionally, according to the surface treatment oil for solid wire for gas shielded arc welding of above-mentioned high strength steel, its feature is also It may be that have the supply lubricating oil of 0.3~1.0g on welding wire surface relative to every 10kg welding wire.
Invention effect
The surface treatment oil for solid wire for gas shielded arc welding of the high strength steel according to the present invention, using the teaching of the invention it is possible to provide a kind of The surface treatment oil for solid wire for gas shielded arc welding of high strength steel, it is arc stability when welding, it can be ensured that The intensity of 780MPa level, and can obtain, at low-temperature region, there is stable high tenacity and flawless High-quality weld metal.
Accompanying drawing explanation
Fig. 1 be the steel plate that thickness of slab is 20mm is processed into bevel angle be 20 °, root gap of weld be The schematic diagram of the band backing plate groove of 16mm.
Fig. 2 be steel plate thickness direction from the 1/2 of thickness position part (comprise weld metal and The part of steel plate of fusing) take the schematic diagram of test film.
Symbol description
1 steel plate, 2 backing plates, 3 weld seams, 4 test films
Detailed description of the invention
The present inventors are for solving above-mentioned problem, to the gas shielded arc at 780MPa grade high-strength steel Even if in weldering, weld job is good and can be formed and has suitable intensity and at the low temperature of-60 DEG C Region also can obtain the one-tenth of the surface treatment oil for solid wire for gas shielded arc welding of the weld metal of stable high tenacity It is grouped into and studies in detail.
As a result of which it is, learn: in order to realize suitable intensity and stably improve low-temperature flexibility simultaneously, C, Suitableization respectively estimated one's own ability of Si, Mn, Cu, Ni, Cr, Mo and Ti is effective, additionally for weldering For connecing workability, make Si and Mn amount suitableization and in right amount containing supply lubricant on welding wire surface It is effective.
The surface treatment oil for solid wire for gas shielded arc welding of the high strength steel of the present invention is grouped into by each one-tenth Each individualism and coexist and the synergy that obtains completes, is grouped into each one-tenth below Add reason and restriction reason is described.Further, hereinafter, by the gross mass relative to welding wire Ratio i.e. quality % represent the chemical composition of solid core welding wire, the statement about this quality % is remembered simply Illustrate for %.
[C:0.02~0.10%]
C is for being improved element necessary to the intensity of weld metal by solution strengthening., If C is less than 0.02%, then can not get this effect.On the other hand, if C is more than 0.10%, then Welding crack sensibility improves.Moreover, it is preferred that be defined as 0.03~0.09%.
[Si:0.20~0.55%]
Si is to add for the deoxidation of weld metal.If Si is less than 0.20%, then electric arc is unstable Fixed.And, weld metal deoxidation is not enough, and toughness declines.On the other hand, if Si is more than 0.55%, Then can not stably obtain the toughness under low temperature.Moreover, it is preferred that be defined as 0.25~0.50%.
[Mn:1.50~1.95%]
It is to add as main deoxidizer as Mn with Si.If Mn is less than 1.50%, then The toughness of weld metal can not be substantially ensured that.And, electric arc is unstable.On the other hand, if Mn More than 1.95%, then can not stably obtain the low-temperature flexibility of weld metal.Moreover, it is preferred that be defined as 1.50~1.90%.
[Cu:0.15~0.45%]
Cu has precipitation strength effect, makes tissue miniaturization carry out constant toughness by reducing phase transition temperature. If Cu is less than 0.15%, then the toughness in a low temperature of can not being stablized.On the other hand, if Cu more than 0.45%, then makes toughness decline because producing Precipitation Embrittlement.And, it is susceptible to high anneal crack Stricture of vagina.Preferably it is defined as 0.20~0.40%.
Further, when welding wire surface being implemented plating Cu for the purpose of antirust, this plating Cu amount is also contained in In Cu content in the present invention.
[Ni:2.7~3.2%]
Ni has makes tissue miniaturization, simultaneously by being solid-solubilized in weld metal by reduction phase transition temperature Thus in the case of not reducing toughness, improve the effect of intensity.If Ni is less than 2.7%, then can not fill Get the effect preventing toughness from declining.On the other hand, if Ni is more than 3.2%, then because of embrittlement of grain boundaries And make toughness reduce.
[Cr:0.35~0.65%]
Cr has makes tissue miniaturization improve the effect of toughness by reduction phase transition temperature.If Cr Less than 0.35%, then can not fully obtain these effects.On the other hand, if Cr is more than 0.65%, Then weld metal significantly hardens, and toughness declines.
[Mo:0.15~0.40%]
As Mo with Ni and Cr, tissue miniaturization is made to improve toughness by reducing phase transition temperature.As Really Mo is less than 0.15%, then can not fully obtain these effects.On the other hand, if Mo exceedes 0.40%, then can not stably obtain the toughness under low temperature.
[Ti:0.02~0.10%]
Ti plays a part deoxidizer, reduces the oxygen in weld metal, improves the toughness of weld metal. It addition, generate the fine oxide of Ti in weld metal, improve the toughness of weld metal further. If Ti is less than 0.02%, then can not stably obtain the toughness under low temperature.On the other hand, if Ti More than 0.10%, then solid solution Ti increases, and toughness declines.
[Pts:0.73~0.95]
Carry out using the content of above-mentioned C, Si, Mn, Cu, Ni, Cr, Mo and Ti as independent variable, Using the intensity of weld metal and toughness as the multiple regression analysis of function, by the coefficient of [C] as 1, Other composition obtain the Pts of following formula so that regression coefficient formula carries out expressing, will be based on welding by this formula The intensity of the weld metal calculated with the composition of welding wire and the inferred value of toughness are as Pts.By make C, The calculated Pts of content following formula of Si, Mn, Cu, Ni, Cr, Mo and Ti is 0.73~0.95, Can obtain being able to ensure that intensity and have good and stable in a low temperature of the weld metal of toughness.If Pts is less than 0.73, then the intensity of weld metal reduces.On the other hand, if Pts is more than 0.95, then The intensity of weld metal is too high, it is impossible to obtain stable low-temperature flexibility.
Pts=[C]+[Si]/7+ [Mn]/5+ [Cu]/7+ [Ni]/20+ [Cr]/8+ [Mo]/2+ [Ti]/5 formula (1)
Further, certainty trace contains during Al steel-making, but nonmetal folder can be formed in weld metal Foreign material make toughness reduce, and therefore content is the most less, are limited in less than 0.010%.S and P is miscellaneous Matter, makes the toughness of weld metal reduce, the most preferably its content is respectively provided be 0.020 mass % with Under.
N is inevitable impurity.Stably to improve the toughness of weld metal, it is necessary to make weld seam gold Solid solution N in genus reduces.If N is more than 0.0070%, then the toughness of weld metal declines.O exists Weld metal is formed with Si or Mn etc. non-metallic inclusion etc. and makes toughness reduce, be therefore defined as Less than 0.010%.
[the supply lubricating oil of welding wire surface: be 0.3~1.0g relative to every 10kg welding wire]
The supply lubricating oil of welding wire surface not necessarily need limit, but especially when semi-automatic welding, logical Cross the supply improving welding wire, arc stability can be made, reduce the generating capacity splashed, prevent welding simultaneously The generation of defect.If the supply lubricant of welding wire surface is less than 0.3g relative to every 10kg welding wire, then The supply of welding wire is bad, and electric arc is unstable, and splashing generating capacity increases.And, it is susceptible to slag inclusion Defect.On the other hand, if the supply lubricant of welding wire surface relative to every 10kg welding wire more than 1.0g, Then make electric arc unstable because welding wire slides in donor rollers portion, splashing generating capacity increases.Additionally, easily Produce pore in weld metal portion, be therefore defined as 0.3~1.0g preferably with respect to every 10kg welding wire.
Supply lubricating oil can be any one in vegetable and animals oils, mineral oil or artificial oil.Plant as dynamic Thing oil, can use Petiolus Trachycarpi oil, Oleum Brassicae campestris, Semen Ricini oil, Adeps Sus domestica, Adeps Bovis seu Bubali, oil etc., as Mineral oil, can use machine oil, turbine oil, bobbin oil etc..As artificial oil, can use hydrocarbon system, Ester system, Polyethylene Glycol system, polyphenol system, silicon-type, fluorine carbon system.In addition it is possible to use containing by The base oil of in oils and fats or ester more than a kind composition and selected from sulfuration oils and fats, sulfurised ester, sulfurized fatty The oil of the one kind or two or more sulfur system oil in acid, olefine sulfide is as lubricating oil.
Further, protective gas is defined as Ar+CO2, but by CO2Combined amount be defined as 5~20 The scope of volume % is to reduce the oxygen amount of weld metal.Additionally, for resistance to defective and prevent from air Being mixed into of nitrogen, the flow of protective gas is preferably 20~35 liters/min.
Embodiment
Hereinafter, by embodiment, the effect of the present invention is specifically described.
It is produced on to have on the welding wire surface of the various chemical compositions shown in table 1 and is coated with palmitic weldering Filament diameter is the welding wire of 1.2mm, by the 780MPa level steel plate that thickness of slab is 20mm shown in table 2 such as Be processed into shown in Fig. 1 bevel angle be 20 °, root gap of weld be the band backing plate groove of 16mm, press Welding condition shown in table 3 carries out multiple-bead deposit.Further, welding wire supply during welding uses 6m length Catheter cable (conduit cable).
Table 1
In the comparative example of table 1, the value of the composition of band underscore represents outside right.
In the example of the present invention of table 1, the value of the supply lubricant of band underscore mean 0.3~ Outside the scope of 1.0g/10kg.
Table 2
Table 3
About evaluation, X-ray transmission test (JIS after the stability of electric arc during investigation welding and welding The presence or absence of defect produced by Z3106), reinvestigates the mechanical performance of weld metal.
About the tune of the mechanical performance of weld metal, as shown in Figure 2 with the thickness of slab 1/2t of soldering test body Centered by take test film (JIS Z224110) and charpy impact test sheet (JIS Z2242V type Notched specimen), implement mechanical test.
About the stability of electric arc, " stablizing " or " slightly unstable " is considered as good.Penetrate about X Line transmission test result, is considered as " zero defect " well.
About the evaluation of tensile strength, it is considered as 800~920MPa well.Additionally, about toughness Evaluating, charpy impact test when p-60 DEG C respectively implements 5, is 89J by the meansigma methods of absorption energy Above, minimum is that more than 70J is considered as well.
About overall merit, the stability of electric arc, X-ray transmission result of the test, tensile strength, Absorption can all good time be considered as qualified (zero), the stability of electric arc, X-ray transmission result of the test, Tensile strength, any one absorbed in energy be considered as time bad defective (×).
Table 4 shows above-mentioned tune result inductively.
Table 4
Welding wire numbering W1 shown in table 1 and table 4~W10 are example of the present invention, welding wire numbering W11~ W25 is comparative example.
Welding wire numbering W1 of example of the present invention~W2, W4~W6 and W8~W10, the C of welding wire, Si, Mn, Cu, Ni, Cr, Mo and Ti amount is appropriate, and the supply amounts of lubrication of welding wire surface is also appropriate, Therefore arc stability, welding defect, the tensile strength of weld metal, absorb can meansigma methods and Low value is all good, is the result being satisfied with very much, and overall merit is qualified (zero).
Welding wire numbering W3 and numbering welding wire W7 to example of the present invention illustrate below.
Welding wire numbering W3 is less than the supply of aforesaid welding wire surface because of the supply amounts of lubrication of welding wire surface Lube range, welding wire numbering W7 is because supply amounts of lubrication is higher than the supply profit of aforesaid welding wire surface Lubricating oil scope, so electric arc is the most unstable, but will not become problem especially.Additionally, not welding Defect, the tensile strength of weld metal, the meansigma methods absorbing energy and minimum are the best, comprehensively comment Valency is qualified (zero).
Hereinafter the overall merit of comparative example welding wire numbering W11 is illustrated.
Welding wire numbering W11 is owing to C content is less than aforementioned C scope, so the tensile strength of weld metal For 781MPa(< 800MPa), for bad.Additionally, due to Ti content is less than aforementioned Ti scope, So it can be bad for absorbing, the minimum absorbing energy of weld metal is 67J(< 70J).
The overall merit of W11 be defective (×).
Hereinafter the overall merit of comparative example welding wire numbering W12 is illustrated.
Welding wire numbering W12 cracks in weld bond portion higher than aforementioned C scope because of C content, so X Transmission of radiation result of the test is bad.Additionally, due to Cr content is higher than aforementioned Cr scope, so inhaling It can be bad for receiving, and the meansigma methods absorbing energy of weld metal is 67J(< 89J), minimum is also 56J (< 70J).
The overall merit of W12 be defective (×).
Hereinafter the overall merit of comparative example welding wire numbering W13 is illustrated.
Welding wire numbering 13 is owing to Si content is less than aforementioned Si scope, so electric arc is unstable, electric arc Stability is bad.Additionally, it can be bad for absorbing, the meansigma methods absorbing energy of weld metal is 81J (< 89J), minimum is also 58J(< 70J).
The overall merit of W13 be defective (×).
Below the overall merit of comparative example welding wire numbering W14 is illustrated.
Welding wire numbering W14 is less than the supply of aforesaid welding wire surface due to the supply lubricant of welding wire surface Lube range, so electric arc is unstable, the generating capacity of splashing is big, and the stability of electric arc is bad. And, also producing dreg defect, X-ray transmission result of the test is the worst.Further, since Si content Higher than aforementioned Si scope, so it can be bad for absorbing, the minimum absorbing energy of weld metal is 48J (< 70J).
The overall merit of W14 be defective (×).
Below the overall merit of comparative example welding wire numbering W15 is illustrated.
Welding wire numbering W15 is owing to Mn content is less than aforementioned Mn scope, so electric arc is unstable, and electricity The stability of arc is bad.Additionally, it can be bad for absorbing, the meansigma methods absorbing energy of weld metal is 85J(< 89J), minimum is also 61J(< 70J).
The overall merit of W15 be defective (×).
Below the overall merit of comparative example welding wire numbering W16 is illustrated.
Welding wire numbering W16 is more than the supply of aforesaid welding wire surface due to the supply lubricant of welding wire surface Lube range, so electric arc is unstable, the generating capacity of splashing is big, and the stability of electric arc is bad. And, also producing pore, X-ray transmission result of the test is the worst.Additionally, due to Mn content is higher than Aforementioned Mn scope, so it can be bad for absorbing, the minimum absorbing energy of weld metal is 52J(< 70J).
The overall merit of W16 be defective (×).
Below the overall merit of comparative example welding wire numbering W17 is illustrated.
Welding wire numbering W17 is owing to the value of Pts is less than aforementioned Pts scope, so the tension of weld metal is strong Degree is 779MPa(< 800MPa), for bad.Additionally, due to Cu content is less than aforementioned Cu scope, So it can be bad for absorbing, the minimum absorbing energy of weld metal is 64J(< 70J).
The overall merit of W17 be defective (×).
Below the overall merit of comparative example welding wire numbering W18 is illustrated.
Welding wire numbering W18 is owing to Cu content is higher than aforementioned Cu scope, so cracking in weld bond portion, X-ray transmission result of the test is bad.Additionally, it can be bad for absorbing, the absorption energy of weld metal Meansigma methods is 73J(< 89J), minimum is also 53J(< 70J).
The overall merit of W18 be defective (×).
Below the overall merit of comparative example welding wire numbering W19 is illustrated.
Welding wire numbering W19 is owing to Ni content is less than aforementioned Ni scope, so it can be bad for absorbing, and weldering The meansigma methods absorbing energy of seam metal is 78J(< 89J), minimum is also 58J(< 70J).
The overall merit of W19 be defective (×).
Below the overall merit of comparative example welding wire numbering W20 is illustrated.
Welding wire numbering W20 is owing to Ni content is higher than aforementioned Ni scope, so it can be bad for absorbing, and weldering The meansigma methods absorbing energy of seam metal is 72J(< 89J), minimum is also 54J(< 70J).
The overall merit of W20 be defective (×).
Below the overall merit of comparative example welding wire numbering W21 is illustrated.
Welding wire numbering W21 is owing to Cr content is less than aforementioned Cr scope, so it can be bad for absorbing, and weldering The meansigma methods absorbing energy of seam metal is 80J(< 89J), minimum is also 55J(< 70J).
The overall merit of W21 be defective (×).
Below the overall merit of comparative example welding wire numbering W22 is illustrated.
Welding wire numbering W22 is owing to Mo content is less than aforementioned Mo scope, so it can be bad for absorbing, The meansigma methods absorbing energy of weld metal is 84J(< 89J), minimum also 65J(< 70J).
The overall merit of W22 be defective (×).
Below the overall merit of comparative example welding wire numbering W23 is illustrated.
Welding wire numbering W23 is owing to Mo content is higher than aforementioned Mo scope, so it can be bad for absorbing, The minimum absorbing energy of weld metal is 46J(< 70J).
The overall merit of W23 be defective (×).
Below the overall merit of comparative example welding wire numbering W24 is illustrated.
Welding wire numbering W24 is owing to Ti content is higher than aforementioned Ti scope, so it can be bad for absorbing, and weldering The meansigma methods absorbing energy of seam metal is 82J(< 89J), minimum is also 56J(< 70J).
The overall merit of W24 be defective (×).
Below the overall merit of comparative example welding wire numbering W25 is illustrated.
Welding wire numbering W25 is owing to the value of Pts is higher than aforementioned Pts scope, so the tension of weld metal is strong Degree is for bad, for 955MPa(> 920MPa), it can be bad for absorbing, the absorption energy of weld metal Minimum is 47J(< 70J).
The overall merit of W25 be defective (×).

Claims (2)

1. the surface treatment oil for solid wire for gas shielded arc welding of a high strength steel, it is characterised in that with relatively Quality % in welding wire gross mass is counted and is contained: C:0.02~0.10%, Si:0.20~0.55%, Mn: 1.50~1.95%, Cu:0.15~0.45%, Ni:2.7~3.2%, Cr:0.35~0.65%, Mo: 0.15~0.38%, Ti:0.02~0.10%, wherein, the Pts represented with following formula (1) is 0.73~0.95, And Al is less than 0.010%, P is less than 0.020%, S is less than 0.020%, N is 0.007% Below, O be less than 0.010%, remainder by Fe and inevitably impurity constitute,
Pts=[C]+[Si]/7+ [Mn]/5+ [Cu]/7+ [Ni]/20+ [Cr]/8+ [Mo]/2+ [Ti]/5 formula (1)
In formula, [C], [Si], [Mn], [Cu], [Ni], [Cr], [Mo], [Ti] represent respectively C, Si, The content in terms of quality % of Mn, Cu, Ni, Cr, Mo, Ti.
The surface treatment oil for solid wire for gas shielded arc welding of high strength steel the most according to claim 1, its It is characterised by that there is on welding wire surface the supply lubricating oil of 0.3~1.0g relative to every 10kg welding wire.
CN201310248542.6A 2013-06-21 2013-06-21 The surface treatment oil for solid wire for gas shielded arc welding of high strength steel Expired - Fee Related CN104227264B (en)

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