CN102717206A - Submerged arc solid welding wire with fire-resistant characteristic - Google Patents
Submerged arc solid welding wire with fire-resistant characteristic Download PDFInfo
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- CN102717206A CN102717206A CN2011100778565A CN201110077856A CN102717206A CN 102717206 A CN102717206 A CN 102717206A CN 2011100778565 A CN2011100778565 A CN 2011100778565A CN 201110077856 A CN201110077856 A CN 201110077856A CN 102717206 A CN102717206 A CN 102717206A
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- 238000003466 welding Methods 0.000 title claims abstract description 68
- 239000007787 solid Substances 0.000 title claims abstract description 14
- 230000009970 fire resistant effect Effects 0.000 title description 16
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 11
- 239000000126 substance Substances 0.000 claims abstract description 8
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 4
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 4
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 4
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 4
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 3
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 38
- 239000010959 steel Substances 0.000 abstract description 38
- 229910052751 metal Inorganic materials 0.000 abstract description 10
- 239000002184 metal Substances 0.000 abstract description 10
- 230000004907 flux Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- 229910052799 carbon Inorganic materials 0.000 abstract description 5
- 239000002893 slag Substances 0.000 abstract description 2
- 239000011572 manganese Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 229910001566 austenite Inorganic materials 0.000 description 7
- 239000010936 titanium Substances 0.000 description 7
- 229910000859 α-Fe Inorganic materials 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 239000011733 molybdenum Substances 0.000 description 5
- 229910000679 solder Inorganic materials 0.000 description 5
- 238000005728 strengthening Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 229910052758 niobium Inorganic materials 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910001563 bainite Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000742 Microalloyed steel Inorganic materials 0.000 description 1
- 229910018643 Mn—Si Inorganic materials 0.000 description 1
- -1 Si0.4~1.00% Substances 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000011417 postcuring Methods 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Nonmetallic Welding Materials (AREA)
- Arc Welding In General (AREA)
Abstract
The invention provides a submerged arc solid core welding wire with fire resistance, which comprises the following chemical components in percentage by weight: c: 0.03-0.12%, S is less than or equal to 0.015%, P is less than or equal to 0.03%, Si: 0.1-0.4%, Mn: 1.25% -1.8%, Ni: 0.2% -0.55%, Mo: 0.25-0.6%, Cr: 0.2-0.55%, Ti: 0.15 to 0.35 percent, and the balance of Fe and inevitable impurities. The submerged arc solid core welding wire has good high-temperature yield strength and can meet the welding requirement of 490 MPa-grade refractory steel; the process is good and easy to remove slag by matching with the alkaline sintered flux; the high-temperature strength is ensured, and meanwhile, the low-carbon equivalent is achieved, and the impact toughness of the deposited metal is good.
Description
Technical field
The invention belongs to technical field of welding materials, relate in particular to a kind of submerged arc solid core welding wire with fire-resistance property.
Background technology
Along with modern architecture develops to large span, superelevation layer, for alleviating integrally-built weight, the reduction of erection time, the increase space has proposed increasingly high requirement to steel for building, and construction(al)steel forward high strength, high-performance, maximization direction develop.Because the increase day by day of high-rise and high-rise steel building, also in continuous enhancing, it is also increasingly high that steel construction self is resisted the fire Capability Requirement to the precautionary measures of fire in high buildings.Therefore skyscraper more and more causes people's attention with the refractory ability of steel.The end of the eighties, Japan carried out the research of fire-resistant steel, through in steel, adding alloying elements such as the high Cr of micro-hear resistance, Mo, Nb, had developed refractory temperature and be 600 ℃ Fire-resistant Steels Used in Buildings.At home, each big steel mill takes to the research of fire-resistant steel aspect from the end of the nineties.Up to the present, Baosteel, Wuhan Iron and Steel Plant and Anshan iron and steel plant have been developed the high-performance building of a plurality of series and have been used serial new steel grade, and this wherein just comprises high-performance refractory weather-proof building structural steel, and are successfully applied to the building of Chinese Antarctic station, Beijing National grand theater.
High-strength and fire-resistive construction steel in the steel construction extensive promoted the development of building high-strength steel solder technology and welding material.But fast development with respect to steel; The exploitation of welding procedure and welding material relatively lags behind; The required welding material of domestic construction steel; Except that welding rod basically can be from domestic according to qualifications buying, corresponding gas shiled solid core welding wire compares with developed countries with welding wire for submerged-arc welding that still there is a big difference, the whole basically dependence on import of the welding material in some key projects.In China's wlding exploitation of present stage; The special-purpose fire-resistant steel SAW consumable material of fire-resistance property does not still appear having; Like the patent No. is " low-carbon high-manganese, the little titanium of silicon, the aluminium high-ductility submerged arc welding wire " that 200610025064.2 " a kind of high-performance building is with welding wire for submerged-arc welding and wire rod " and the patent No. are CN92113132.1; They all do not have specially stating of wlding fire resistance just as common building submerged arc welding wire for steel in its results of property.Japan is as the fire-resistant steel of exploitation country early; In the exploitation steel grade; Also its welding material special having been carried out deep research, is that " SUBMERGED ARC WELDING WIRE AND FLUX FOR FIRERESISTANT STEEL " (welding wire for submerged-arc welding and solder flux) and the patent No. of JP02200393A is " WELDING WIRE FOR FIRE RESISTANT STEEL " (CO of JP02052196A like the patent No.
2Welding wire for gas shielded welding) all is the welding that is directed against fire-resistant steel specially.The welding wire for submerged-arc welding that JP02200393A stated mainly contains C 0.01～0.15% in chemical composition; Si≤0.5%; Mn 0.4～2.5%, and Mo 0.06～0.08%, and Nb 0.003～0.030%; Other are Fe and impurity element, and wherein the content of (Mo+20Nb) must be controlled between 0.15～1.25%.This welding wire mainly relies on the synergy of Nb and Mo, lay special stress on the influence of Nb element to elevated temperature strength.Do not have the interpolation of Ti element in its composition, ignored the facilitation of Ti element butt welded seam district acicular ferrite formation and the improvement effect of butt welded seam toughness.This welding wire also must mate special-purpose submerged arc welding flux, restriction to some extent on application conditions.The gas protecting welding wire that JP02052196A stated mainly contains C 0.03～0.12% in chemical composition, Si0.4～1.00%, and Mn 0.9～2.5%; Mo 0.1～0.5%, and Nb 0.005～0.025%, Cu≤0.5%; P≤0.030%, S≤0.030%, other are Fe and impurity element.Adopt CO in this wire welding termination process
2Gas shield, different with submerged welding process.
Summary of the invention
The objective of the invention is to solve above-mentioned existing in prior technology defective; Weld special-purpose SAW consumable material present situation that lacks and the requirement of building fire-resistant steel welding applications according to fire-resistant steel; It is reasonable to propose a kind of smelting composition; Mechanical behavior under high temperature is good, can satisfy the submerged arc solid core welding wire with fire-resistance property of the fire-resistant steel welding of 490MPa rank usefulness.The room temperature tensile strength Rm >=550MPa of this welding wire deposited metal, yield strength >=460MPa, 600 ℃ of high-temperature yield strength >=250MPa, and low-temperature impact toughness and welding technological properties are good.
The present invention is achieved in that the chemical component weight percentage of this submerged arc solid core welding wire is: C0.03%～0.12%, S≤0.015%, P≤0.03%, Si 0.1%～0.4%, Mn 1.25%～1.8%, Ni 0.2%～0.55%, Mo 0.25%～0.6%, Cr 0.2%～0.5%, Ti 0.15%～0.35%, surplus is Fe and unavoidable impurities.
The design principle of alloy system of the present invention is: this welding wire is mainly realized through the microalloying means of weld metal zone alloying element, uses High-Temperature Strengthening mechanism such as solution strengthening, the second phase precipitation strength, satisfies the elevated temperature strength requirement of fire-resistant steel welding.
The design principle of welding wire chemical analysis of the present invention is following:
Mo: molybdenum is the elevated temperature strength effective elements the most that improves steel.At present in the existing fire-resistant steel all with molybdenum as the High-Temperature Strengthening element.The molybdenum solid solution has been strengthened ferrite matrix in ferrite, molybdenum diffusion velocity in ferrite is slower under the high temperature, has significantly improved the elevated temperature strength and the creep strength of steel.Gather partially on the easy crystal boundary of molybdenum of solid solution simultaneously, work to strengthen crystal boundary.Mo also can increase the stability of overcooling austenite, and postpone the transformation of pro-eutectoid ferrite and help forming bainite structure, and the strong inhibition perlitic transformation, the bainite structure of high dislocation density has presented the good high-temperature performance.Simultaneously the solid solubility of Mo in cementite is merely 4%, carbide precipitate very easily, and Mo combines to form oxycarbide with C, N when high temperature, the generation pinning effect, these carbide can cause post-curing at high temperature, make the high-temperature yield strength enhancing.For making welding wire that significant high-temperature behavior arranged, Mo content is not less than 0.25% in the welding wire, and Mo is difficult for adding as a kind of precious metal element simultaneously, and higher Mo content also increases the hardenability of weld metal easily, therefore should be controlled at below 0.6%.
Ti: the Ti of trace generates the second phase particle of the small and dispersed of indissoluble in steel; The pinning austenite grain boundary; Suppressing the heat affected area austenite crystal grows up; Improve postwelding toughness, and this small and dispersed distribution precipitated phase stops growing up of austenite crystal to when heating, hinder that plastic flow all can play advantageous effect in the drawing process.Ti and oxygen combining power are strong, easy scaling loss in welding process, and addition generally is not less than 0.15%, and its transfer coefficient in weld seam is very little, and an amount of the use gets final product, and this welding wire addition is controlled at below 0.35%.
Cr:Cr can improve the high-temperature oxidation resistance and the creep-resistant property of steel effectively, can improve the elevated temperature strength of steel effectively.The diffusion coefficient of Cr in ferrite is higher, combines to form carbide easily with carbon.Seeing that the High-Temperature Strengthening effect that Cr has, and the control of welding wire cost, its content is controlled between 0.2%～0.5%.
Mn:Mn is as the main alloy element in the Weld Metal in Microalloyed Steel, and the appreciable impact austenite spreads, and Mn is the austenite stable element, makes austenite phase transformation shift to lower temperature.Mn is as deoxidier main in this welding wire, and content is not less than 1.25%.It also has the effect of crystal grain thinning and solution strengthening.But the excessive meeting of Mn element causes appearance of weld not attractive in appearance, surpass 2% also can influence weld seam toughness, so limit addition is set at 1.8%.
The Si:Si element is the element that dwindles the γ district, can significantly improve the pearlitic transformation temperature, under higher temperature, forms comparatively thick carbide.Si adds as important deoxidant element, and its butt welded seam tissue and Effect on Performance mainly is to embody through the effect with oxygen; Particularly when Mn-Si exists simultaneously; When the Mn/Si ratio was suitable, deoxidation effect was better, also helped to improve toughness.The Si element can carry out the transition in the weld seam through solder flux in a large number in the submerged arc welding process, and is less when therefore addition is than gas shielded arc welding in welding wire, is between 0.1%～0.4%.
Ni:Ni is the element that enlarges the γ phase region, the CCT curve is moved to right, thereby can impel the formation of acicular ferrite, and welding seam toughness is improved.The Ni element generally receives the influence of Mn element addition to the influence of toughness in the weld seam, and when two kinds of elements were in best proportioning, weld metal had best obdurability coupling, and the content of Ni element is between 0.2%～0.55% in this welding wire.
Submerged arc solid core welding wire of the present invention has the good high-temperature yield strength, and can satisfy fire-resistant steel application requirements; With the alkalescent sintered flux coupling, technology is good, and it is easy to take off slag; When guaranteeing elevated temperature strength, possess low carbon equivalent, the impact flexibility of deposited metal is good.
The specific embodiment
Through embodiment the present invention is done further description below.
The embodiment of the invention is in the smelting of 200kg vacuum electric furnace completion welding wire steel, and its chemical composition is seen table 1.Be rolled into Φ 5.5mm wire rod then; Around → operations such as packing, finally the diameter of solid core welding wire is Φ 4mm to wire rod through mechanical derusting → pickling → boronation → oven dry → drawing → sand washing → alkali cleaning → pickling → activation → electroless copper → cleaning → oven dry → sizing polishing → layer.
The test plate (panel) of specification 20 * 120 * 300mm is adopted in deposited metal welding experiment of the present invention, and the surface removal rust is dirty.Welding current 520～550A, weldingvoltage 28～30V, speed of welding 23.5～25m/s, the coupling solder flux is selected SJ101 and Yi Sa 10.62 solder flux through 350 ℃ of insulation 2h oven dry for use, and postwelding detects the relevant mechanical property of deposited metal.Its result sees table 2 and table 3.
Can find out that from embodiment submerged arc solid core welding wire of the present invention possesses good low-temperature impact toughness, 600 ℃ of high-temperature yield strengths reach the last 70% of room temperature surrender, can satisfy the welding process requirement that the 490MPa rank is built fire-resistant steel.
The chemical composition of table 1 embodiment of the invention submerged arc solid core welding wire
The performance of table 2 embodiment of the invention welding wire deposited metal
Table 3 embodiment of the invention welding wire deposited metal performance hit performance
Claims (1)
1. submerged arc solid core welding wire with fire-resistance property; The chemical component weight percentage that it is characterized in that this welding wire is: C 0.03%～0.12%, S≤0.015%, P≤0.03%, Si 0.1%～0.4%, Mn 1.25%～1.8%, Ni 0.2%～0.55%, Mo 0.25%～0.6%, Cr 0.2%～0.5%, Ti 0.15%～0.35%, surplus is Fe and unavoidable impurities.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100778565A CN102717206A (en) | 2011-03-29 | 2011-03-29 | Submerged arc solid welding wire with fire-resistant characteristic |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100778565A CN102717206A (en) | 2011-03-29 | 2011-03-29 | Submerged arc solid welding wire with fire-resistant characteristic |
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| CN102717206A true CN102717206A (en) | 2012-10-10 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104400253A (en) * | 2014-11-19 | 2015-03-11 | 钢铁研究总院 | Submerged-arc welding wire for constructing ocean platform |
| CN104722954A (en) * | 2015-03-24 | 2015-06-24 | 天津重型装备工程研究有限公司 | Automatic submerged arc welding wire used in nuclear grade strong radiation area |
| CN105195919A (en) * | 2014-06-11 | 2015-12-30 | 鞍钢股份有限公司 | Steel for gas shielded welding wire for high-strength weathering steel and welding wire |
| CN105234583A (en) * | 2015-10-26 | 2016-01-13 | 钢铁研究总院 | X80 submerged-arc welding wire applicable to welding of coal-to-gas pipes |
| CN107186376A (en) * | 2016-03-14 | 2017-09-22 | 株式会社神户制钢所 | Solid core welding wire |
| CN108857140A (en) * | 2018-07-26 | 2018-11-23 | 钢铁研究总院 | Antidetonation is anti-corrosion 460MPa grades of welding wire for submerged-arc welding of fire-resistive construction structural steel |
| CN110280925A (en) * | 2019-07-16 | 2019-09-27 | 南京钢铁股份有限公司 | A kind of welding wire for submerged-arc welding for high building structure refractory steel |
| CN110385545A (en) * | 2018-10-25 | 2019-10-29 | 唐山师范学院 | A kind of manual argon arc welding welding wire steel |
| CN110666311A (en) * | 2019-08-29 | 2020-01-10 | 江苏省沙钢钢铁研究院有限公司 | High-efficiency welding process for multi-element composite microalloyed molybdenum-saving refractory steel |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105195919A (en) * | 2014-06-11 | 2015-12-30 | 鞍钢股份有限公司 | Steel for gas shielded welding wire for high-strength weathering steel and welding wire |
| CN104400253A (en) * | 2014-11-19 | 2015-03-11 | 钢铁研究总院 | Submerged-arc welding wire for constructing ocean platform |
| CN104722954A (en) * | 2015-03-24 | 2015-06-24 | 天津重型装备工程研究有限公司 | Automatic submerged arc welding wire used in nuclear grade strong radiation area |
| CN104722954B (en) * | 2015-03-24 | 2016-10-19 | 天津重型装备工程研究有限公司 | A kind of core level strong irradiated site Lincoln weld welding wire |
| CN105234583A (en) * | 2015-10-26 | 2016-01-13 | 钢铁研究总院 | X80 submerged-arc welding wire applicable to welding of coal-to-gas pipes |
| CN107186376A (en) * | 2016-03-14 | 2017-09-22 | 株式会社神户制钢所 | Solid core welding wire |
| CN107186376B (en) * | 2016-03-14 | 2019-12-03 | 株式会社神户制钢所 | Solid core welding wire |
| CN108857140A (en) * | 2018-07-26 | 2018-11-23 | 钢铁研究总院 | Antidetonation is anti-corrosion 460MPa grades of welding wire for submerged-arc welding of fire-resistive construction structural steel |
| CN110385545A (en) * | 2018-10-25 | 2019-10-29 | 唐山师范学院 | A kind of manual argon arc welding welding wire steel |
| CN110385545B (en) * | 2018-10-25 | 2022-01-11 | 唐山师范学院 | Welding wire steel for manual argon arc welding |
| CN110280925A (en) * | 2019-07-16 | 2019-09-27 | 南京钢铁股份有限公司 | A kind of welding wire for submerged-arc welding for high building structure refractory steel |
| CN110666311A (en) * | 2019-08-29 | 2020-01-10 | 江苏省沙钢钢铁研究院有限公司 | High-efficiency welding process for multi-element composite microalloyed molybdenum-saving refractory steel |
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Application publication date: 20121010 |