CN101104229A - Submerged arc welding wire for steel pipeline - Google Patents
Submerged arc welding wire for steel pipeline Download PDFInfo
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- CN101104229A CN101104229A CNA2006101455936A CN200610145593A CN101104229A CN 101104229 A CN101104229 A CN 101104229A CN A2006101455936 A CNA2006101455936 A CN A2006101455936A CN 200610145593 A CN200610145593 A CN 200610145593A CN 101104229 A CN101104229 A CN 101104229A
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- welding wire
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- submerged arc
- arc welding
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Abstract
The invention relates to a submerged arc welding wire used on a pipeline steel, which is applied in the submerged arc welding of an X80 high steel grade pipeline steel plate used on high-pressure oil and high-pressure gas conveying pipelines. The chemical components comprise (according to weight percent): C 0.02-0.07; Si 0.10-0.30; Mn 1.80-2.50; P is less than 0.010; S is less than 0.010; Cr 0.10- 0.50; Ti 0.05-0.08; Mo 0.20-0.50; B 0.003-0.004; and the rest is Fe. The welding wire is matched with BGSJ101-G flux and other special flux for pipeline steel welding , and then the best strength and toughness of welding seam can be obtained; the tensile strength ob of welded seam metal is more than or equal to 700MPa. Impact energy AkV of the welded seam metal in the minus 20 DEG C is more than or equal to 150J. And thus, the invention is suitable for the submerged arc welding of the X80 high steel grade pipeline steel plate.
Description
Technical field
The present invention relates to a kind of submerged arc welding wire for steel pipeline, belong to field of welding material, be specially adapted to the submerged arc welding of X80 level pipeline steel plate.
Background technology
The following welded tube welding wire of X65 level, domestic production producer is more, and kind is also more.X65～X70 level welded tube welding wire has patented product H08C, H08D and H05M at present.What the present invention developed is the welding wire of X80 steel special use.Because the carbon content of X80 level pipe line steel has reached and has been lower than 0.07% Ultra-low carbon level, its metal structure is that acicular ferrite occupies major part, require weld metal to be complementary with it, therefore seam organization also should be based on acicular ferrite, so the carbon content of welding X80 level pipe line steel welding wire can not be too high, existing welding wire carbon content is higher, thereby can not adopt; Most of in addition patent welding wire all contains valuable alloying elements such as the very high Ni of price, Mo, the welding wire that only contains above a kind of noble element, when being used to weld the high grade of steel pipe line steel of X80, the intensity of the mechanical property of its deposited metal is on the low side, the patent welding wire that has contains rare earth, is difficult for realizing in industrial production.Therefore should develop as early as possible industrially be easy to produce, carbon content is low, cost is low X80 level submerged arc welding wire for steel pipeline.But reduction along with carbon content, the intensity of weld seam also reduces, therefore the solution strengthening unit that must interpolation influence toughness usually guarantees the obdurability of weld metal, with the immediate prior art of the present invention the WGX2 welding wire is arranged, the patent No. is 200510018993.6, but its C 0.04-0.12%, the high limit of carbon has been higher than 0.07%, other existing its carbon content of patent welding wire is also higher, thus be badly in need of that the exploitation carbon content is low, cost is low, the industrial new patent welding wire that is easy to realize and ultralow-carbon X80 steel be complementary.
Summary of the invention
The object of the invention is exactly that a kind of high tenacity, low cost, industrial welding wire for submerged-arc welding that is easy to produce that is applicable to Ultra-low carbon X80 level pipe line steel will be provided.
Realize the related submerged arc welding wire for steel pipeline of the object of the invention: chemical analysis (percentage by weight) is C0.02-0.07; Si 0.10-0.30; Mn 1.80-2.50; P＜0.010; S＜0.010; Cr0.10-0.50; Ti 0.05-0.08; Mo 0.20-0.50; B 0.003-0.004, surplus is an iron.
The present invention is from the composition design, suitably reduce carbon content, to keep suitable with the carbon content of mother metal, carbon content reduces and causes the reduction of intensity, remedy by improving Mn content, add microalloy elements such as Mo, Cr, Ti, B simultaneously, the content of elements such as restriction S, P is to improve the obdurability of weld metal.
Mn is the austenitizing stable element, within the specific limits, increases the volume fraction that Mn not only can improve acicular ferrite in the weld seam, reduce pro-eutectoid ferrite quantity, simultaneously obtain the low-carbon bainite tissue easily, the increase of manganese content both can be put forward the steel high tenacity, can improve steel strength again.
Mo can reduce phase transition temperature, suppress the generation of pro-eutectoid ferrite, promote the transformation of acicular ferrite, increase the ratio of acicular ferrite, and can improve the precipitation strength effect of carbonitride, thereby Mo can improve intensity, crystal grain thinning, reduce ductile-brittle transition temperature, improve the precipitation strength effect of the carboritride of Nb.
Add proper C r, can suppress the generation of pro-eutectoid ferrite, increase the content of acicular ferrite in the weld metal, thereby improve the obdurability of weld metal.
Ti and B add simultaneously as microalloy element, and the Ti and the N that add trace form the TiN particle, effectively stop the genus grain growth of weld seam gold, crystal grain thinning, Ti can also reduce pro-eutectoid ferrite and form, and increases acicular ferrite content, measures DeGrain when hanging down but contain B.B can be segregated in crystal boundary and N forms compound, plays nitrogen fixation, adds B simultaneously the CCT curve is moved to right, suppress pro-eutectoid ferrite and separate out, obtain more acicular ferrite, thereby improve welding seam toughness, but the adding of B needs under the prerequisite of adding Ti, guarantees that B is not oxidized.
S, P element line pearl reduce the low-temperature impact toughness of weld metal, should strict limit their content in welding wire, to guarantee that S, P are controlled at lower level in the weld metal.
Welding wire for submerged-arc welding of the present invention adopts industrial converter smelting, and the high speed twist-free mill is rolling, is easy in the production realize that cost is low, can obtain best weld seam obdurability with BGSJ101-G solder flux and other pipe line steel special flux coupling.
Beneficial effect of the present invention:
A, welding wire for submerged-arc welding of the present invention and pipe line steel special flux BGSJ101-G or CHF101GX coupling, the yield strength σ s=590-660MPa of deposited metal, and have higher low-temperature flexibility.
B, welding wire for submerged-arc welding of the present invention and the homemade X80 steel Weld Performance that obtains that is complementary is as follows:
1. the tensile strength sigma of weld metal
b〉=700Mpa; Ballistic work A under the weld metal-20 ℃
Kv〉=150J.
2. weld metal is organized as a small amount of pearlite P of a large amount of acicular ferrite AF+ of a small amount of pro-eutectoid ferrite F+.
C, welding wire for submerged-arc welding of the present invention have good welding technological properties, and weldering speed is when 1.5-2.0m/min, and 15mm has higher weld strength and notched bar impact strength with the welded tube of wall thickness, and very stable.
D, the alternative import welding wire of welding wire for submerged-arc welding of the present invention reduce cost, and be used to transfer natural gas from the west to the east two wires and transnational long-distance transport pipes will produce bigger economic benefit.
The specific embodiment:
Adopt desulphurised hot metal; the stove molten steel sulfur content is gone in control; adopt pneumatic steelmaking, select S, raw material that P content is low for use, adopt top bottom blowing technology; C, S, the P of smelting endpoint are controlled at lower level; behind deoxidation alloying, adopt furnace outer refining process such as LF stove, smelt the satisfactory molten steel of composition; molten steel is cast into continuous casting billet through kind casting machine full guard, and continuous casting billet is rolled into the wire rod of Ф 5.5mm through the high speed twist-free mill.
Wire rod is through the pickling of peeling off-be coated with borax one a hot candied copper facing to make Ф 4mm or Ф 3.2mm finished product welding wire.
With embodiment welding wire of the present invention is described in further detail below:
Embodiment 1: adopt (desulfurizing iron) → converter smelting → LF stove refining → 160mm
2The cast of square billet casting machine full guard.Low-sulfur molten iron is selected in steel-making for use, smelting is carried out the steel making working procedure operation by regulations for technical operation and relevant key points for operation, when producing, arranges in tissue the top and bottom combined blown converter blowing as far as possible, and assurance top and bottom complex blowing effect, strict control steel-making terminal point composition, tapping temperature, parameters such as the quantity of slag down controls welding wire of the present invention and are used in the steel impurity element S, P all less than 0.01%.With 160mm
2Square billet is rolled into Ф 5.5mm wire rod, through removing surface scale, wire drawing, copper plating treatment, make Ф 4mm welding wire, the chemical composition of welding wire (% by weight): C0.03, Mn1.85, Si0.12, Cr0.3, Mo0.26, Ti0.05, B0.003, surplus is iron and unavoidable impurities.
Welding wire of the present invention and BGSJ101-G solder flux coupling are carried out the deposited metal welding, and test plate (panel) is Q235, and thickness is 24mm, 30 ° of bevel angles, and root gap is 12mm.Welding conditions are: welding current 500～540A, weldingvoltage 28～30V, speed of welding 24m/h, weld heat input 23KJ/cm, interlayer temperature≤150 ℃.The yield strength σ of deposited metal
s=590Mpa, the tensile strength sigma of deposited metal
b=651Mpa, the percentage elongation δ of deposited metal
5=27%, deposited metal-20 ℃ ballistic work A
KV=105J, deposited metal-40 ℃ ballistic work A
KV=48J.
Welding wire of the present invention carries out X80 level pipe line steel mariages with BGSJ101-G solder flux coupling, double-submerged arc is dull and stereotyped docks test, and test plate (panel) is of a size of 15.3mm * 300mm * 500mm, opens X type groove, 60 ° of bevel angles.Standard is: interior weldering the 1st rhizoid, welding current 1000～1050A, weldingvoltage 31～33V, interior weldering the 2nd rhizoid, welding current 380～420A, weldingvoltage 34～36V; Outside weld the 1st rhizoid 1050～1150A, welding current, weldingvoltage 31～33V, outside weld the 2nd rhizoid, welding current 380～420A, weldingvoltage 34～36V.The tensile strength of weld metal is σ
b=700Mpa, weld metal-20 ℃ ballistic work A
KV=151J, the highest vickers hardness hv of weld metal
10=252.
Embodiment 2: adopt above-mentioned explained hereafter welding wire, the chemical composition of welding wire (% by weight): C0.05, Mn1.90, Si0.20, Cr0.2, Mo0.36, Ti0.065, B0.0035, surplus is iron and unavoidable impurities.Welding wire of the present invention and BGSJ101-G solder flux coupling is carried out the deposited metal welding, and test plate (panel) material, specification, bevel angle, welding procedure are identical with example 1, the yield strength σ of deposited metal
s=610Mpa, the tensile strength sigma of deposited metal
b=665Mpa, the percentage elongation δ of deposited metal
5=25%, deposited metal-20 ℃ ballistic work A
KV=115J, deposited metal-40 ℃ ballistic work A
KV=70J.
Welding wire of the present invention carries out X80 level pipe line steel mariages with BGSJ101-G solder flux coupling, the double-submerged arc flat board docks test, test plate (panel) specification, bevel angle, welding procedure are identical with example 1, the tensile strength of weld metal is σ b=710Mpa, weld metal-20 ℃ ballistic work A
KV=155J, the highest vickers hardness hv of weld metal
10=258.。
Embodiment 3: adopt above-mentioned explained hereafter welding wire, the chemical composition of welding wire (% by weight): C0.07, Mn2.00, Si0.25, Cr0.2, Mo0.3, Ti0.07, B0.0035, surplus is iron and unavoidable impurities.
The special-purpose SJ101 solder flux coupling of the pipe line steel that welding wire of the present invention and Atlantic Ocean welding material Co., Ltd produce is carried out the deposited metal welding, and test plate (panel) material, specification, bevel angle, welding procedure are identical with example 1, the yield strength σ of deposited metal
s=660Mpa, the tensile strength sigma of deposited metal
b=717Mpa, the percentage elongation δ of deposited metal
5=23% ,-20 ℃ of ballistic work A of deposited metal
KV=100J ,-40 ℃ of ballistic work A of deposited metal
KV=56J.
Claims (1)
1. submerged arc welding wire for steel pipeline, its chemical composition (% by weight) contains: C0.02-0.07; Si0.10-0.30; Mn1.80-2.50; P＜0.010; S＜0.010; Cr0.10-0.50; Ti0.05-0.08; Mo0.20-0.50; B0.003-0.004; Surplus is Fe.
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| CNB2006101455936A CN100537118C (en) | 2006-11-24 | 2006-11-24 | Submerged arc welding wire for steel pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101455936A CN100537118C (en) | 2006-11-24 | 2006-11-24 | Submerged arc welding wire for steel pipeline |
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| CN101104229A true CN101104229A (en) | 2008-01-16 |
| CN100537118C CN100537118C (en) | 2009-09-09 |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101987403A (en) * | 2010-12-09 | 2011-03-23 | 沈阳航空航天大学 | 900MPa-level high-performance gas shielded welding wire |
| CN102205458A (en) * | 2011-05-05 | 2011-10-05 | 中国石油集团渤海石油装备制造有限公司 | Manufacturing method for X120 steel-level spiral seam hidden arc welding tube |
| CN101518857B (en) * | 2009-03-30 | 2011-11-09 | 湖北猴王焊材有限公司 | Special welding wire for oil and natural gas delivery pipelines |
| CN102240865A (en) * | 2011-06-28 | 2011-11-16 | 首钢总公司 | High-strength high-toughness submerged-arc welding wire for super-high-strength pipeline steel |
| CN102267021A (en) * | 2010-06-07 | 2011-12-07 | 鞍钢股份有限公司 | Submerged arc welding wire for pipe line steel and method for manufacturing submerged arc welding wire |
| CN103084754A (en) * | 2013-01-23 | 2013-05-08 | 宝山钢铁股份有限公司 | High-strength high-tenacity submerged-arc welding wire for pipeline steels |
| CN103084752A (en) * | 2013-01-23 | 2013-05-08 | 宝山钢铁股份有限公司 | High-strength high-tenacity submerged-arc welding wire for X100 pipeline steel |
| CN103252594A (en) * | 2013-04-26 | 2013-08-21 | 宝鸡石油钢管有限责任公司 | Welding wire applicable to welding of X70MS/X65MS pipeline steel resisting hydrogen sulfide corrosion |
| CN103846571A (en) * | 2014-03-26 | 2014-06-11 | 锦州天鹅焊材股份有限公司 | Welding wire for submerged-arc welding of high-efficiency X100 pipeline steel and application of welding wire |
| CN104942469A (en) * | 2015-07-01 | 2015-09-30 | 宝鸡石油钢管有限责任公司 | Welding wire suitable for welding low-strength H2S-corrosion-resistant pipeline steel in submerged arc mode |
| CN106001987A (en) * | 2016-05-30 | 2016-10-12 | 燕山大学 | Weather-resistant submerged arc welding wire for free-coating weather-resistant steel bridge |
| CN106475708A (en) * | 2017-01-03 | 2017-03-08 | 天津大桥焊材集团有限公司 | Gas shielded arc welding solid welding wire for X80 pipe line steel boxing seam welding |
| CN107009049A (en) * | 2017-05-24 | 2017-08-04 | 中国石油天然气集团公司 | One kind is applied to below L360/X52 low level pipe line steel submerged arc welding welding wires |
| CN110640277A (en) * | 2019-09-30 | 2020-01-03 | 广州黄船海洋工程有限公司 | Q420 high-strength steel thick plate non-preheating double-wire submerged-arc welding process |
| CN112059362A (en) * | 2020-09-03 | 2020-12-11 | 武汉钢铁有限公司 | X90 pipeline steel high heat input welding method |
| CN112404671A (en) * | 2020-11-06 | 2021-02-26 | 李素坤 | Solid welding wire for FCB (flux cored arc welding) method high heat input submerged arc welding and preparation method and application thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1177351A (en) * | 1966-10-11 | 1970-01-14 | Hirst Electric Ind Ltd | Improvements in and relating to welding electrodes and the like |
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2006
- 2006-11-24 CN CNB2006101455936A patent/CN100537118C/en active Active
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101518857B (en) * | 2009-03-30 | 2011-11-09 | 湖北猴王焊材有限公司 | Special welding wire for oil and natural gas delivery pipelines |
| CN102267021A (en) * | 2010-06-07 | 2011-12-07 | 鞍钢股份有限公司 | Submerged arc welding wire for pipe line steel and method for manufacturing submerged arc welding wire |
| CN102267021B (en) * | 2010-06-07 | 2014-12-03 | 鞍钢股份有限公司 | Submerged arc welding wire for pipe line steel and method for manufacturing submerged arc welding wire |
| CN101987403B (en) * | 2010-12-09 | 2012-11-07 | 沈阳航空航天大学 | 900MPa-level high-performance gas shielded welding wire |
| CN101987403A (en) * | 2010-12-09 | 2011-03-23 | 沈阳航空航天大学 | 900MPa-level high-performance gas shielded welding wire |
| CN102205458A (en) * | 2011-05-05 | 2011-10-05 | 中国石油集团渤海石油装备制造有限公司 | Manufacturing method for X120 steel-level spiral seam hidden arc welding tube |
| CN102240865A (en) * | 2011-06-28 | 2011-11-16 | 首钢总公司 | High-strength high-toughness submerged-arc welding wire for super-high-strength pipeline steel |
| CN103084754A (en) * | 2013-01-23 | 2013-05-08 | 宝山钢铁股份有限公司 | High-strength high-tenacity submerged-arc welding wire for pipeline steels |
| CN103084752A (en) * | 2013-01-23 | 2013-05-08 | 宝山钢铁股份有限公司 | High-strength high-tenacity submerged-arc welding wire for X100 pipeline steel |
| CN103084754B (en) * | 2013-01-23 | 2016-04-27 | 宝山钢铁股份有限公司 | A kind of pipe line steel high-strength and high ductility welding wire for submerged-arc welding |
| CN103252594A (en) * | 2013-04-26 | 2013-08-21 | 宝鸡石油钢管有限责任公司 | Welding wire applicable to welding of X70MS/X65MS pipeline steel resisting hydrogen sulfide corrosion |
| CN103846571B (en) * | 2014-03-26 | 2016-03-16 | 锦州天鹅焊材股份有限公司 | A kind of high-performance X100 pipe line steel welding wire for hidden arc welding and application thereof |
| CN103846571A (en) * | 2014-03-26 | 2014-06-11 | 锦州天鹅焊材股份有限公司 | Welding wire for submerged-arc welding of high-efficiency X100 pipeline steel and application of welding wire |
| CN104942469A (en) * | 2015-07-01 | 2015-09-30 | 宝鸡石油钢管有限责任公司 | Welding wire suitable for welding low-strength H2S-corrosion-resistant pipeline steel in submerged arc mode |
| CN106001987A (en) * | 2016-05-30 | 2016-10-12 | 燕山大学 | Weather-resistant submerged arc welding wire for free-coating weather-resistant steel bridge |
| CN106001987B (en) * | 2016-05-30 | 2018-05-08 | 燕山大学 | One kind exempts from the weather-proof welding wire for submerged-arc welding of the weather-proof steel bridge of application |
| CN106475708A (en) * | 2017-01-03 | 2017-03-08 | 天津大桥焊材集团有限公司 | Gas shielded arc welding solid welding wire for X80 pipe line steel boxing seam welding |
| CN107009049A (en) * | 2017-05-24 | 2017-08-04 | 中国石油天然气集团公司 | One kind is applied to below L360/X52 low level pipe line steel submerged arc welding welding wires |
| CN110640277A (en) * | 2019-09-30 | 2020-01-03 | 广州黄船海洋工程有限公司 | Q420 high-strength steel thick plate non-preheating double-wire submerged-arc welding process |
| CN112059362A (en) * | 2020-09-03 | 2020-12-11 | 武汉钢铁有限公司 | X90 pipeline steel high heat input welding method |
| CN112404671A (en) * | 2020-11-06 | 2021-02-26 | 李素坤 | Solid welding wire for FCB (flux cored arc welding) method high heat input submerged arc welding and preparation method and application thereof |
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| CN100537118C (en) | 2009-09-09 |
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Address after: 100041 Beijing Shijingshan District Shougang Corporation Co-patentee after: Baoji Petroleum Steel Pipe Co., Ltd. Patentee after: Shougang Group Co. Ltd. Address before: 100041 Beijing Shijingshan District Shougang Corporation Co-patentee before: Baoji Petroleum Steel Pipe Co., Ltd. Patentee before: Capital Iron & Steel General Company |