CN102699568A - High-ductility and anti-corrosion submerged-arc welding wire rod, welding wire and application thereof - Google Patents
High-ductility and anti-corrosion submerged-arc welding wire rod, welding wire and application thereof Download PDFInfo
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- CN102699568A CN102699568A CN2012102021906A CN201210202190A CN102699568A CN 102699568 A CN102699568 A CN 102699568A CN 2012102021906 A CN2012102021906 A CN 2012102021906A CN 201210202190 A CN201210202190 A CN 201210202190A CN 102699568 A CN102699568 A CN 102699568A
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Abstract
The invention provides a high-ductility and anti-corrosion submerged-arc welding wire rod and a welding wire. The welding wire rod and the welding wire both comprise the following elements in percentage by weight: not more than 0.10 of C, not more than 0.10% of Si, 1.50-1.70% of Mn, not more than 0.015% of P, not more than 0.003% of S, not more than 0.015% of As, not more than 0.010% of Sn, 0.33-0.43% of Mo, not more than 0.30% of Ni, 0.04-0.08% of Ti, not more than 0.008% of B as well as the balance of Fe and inevitable impurity elements. The invention further provides application of the welding wire on hot rolled steel plates for high-ductility and anti-corrosion steels X70-X80. According to the welding wire provided by the invention, deposited metal has the advantages of good mechanical properties, welding properties and anti-corrosion properties; hydrogen sulfide corrosion resistant and seawater corrosion resistant steels can be welded; and the welding wire provided by the invention is suitable for structures having high requirements on both corrosion resistance and strong ductility of a full-immerged region and a splashing region in seawater.
Description
Technical field
The invention belongs to welding material of metal, specifically, the present invention relates to a kind of high tenacity corrosion resistant welding material.
Background technology
Along with development of Chinese economy, China constantly increases the demand of oil, and marine petroleum development has become one of emphasis of national energy strategy, and marine petroleum development will get into a Rapid development stage, particularly marine site, the South Sea and marine site, the Bohai Sea.As indispensable drilling platforms and the auxiliary facility of marine petroleum development probing; Like ships that transport, submarine transport oil pipeline and container etc.; Demand to steel is increasing; The quality requirement of steel is also increasingly high, is for being applied to one type of low-alloy steel that above-mentioned environmental condition is developed like Seawate-corrosive-resisting steel, and seawater corrosion resistance is exactly wherein a kind of with steel X70-X80.As with the supporting welding material of marine steel; Not only to have excellent mechanical property and anti-seawater corrosion ability; But also to have welding technological properties preferably, especially hull steel, deep-sea pipeline etc. are newly to develop the emphasis of welding wire so improve the toughness of weld metal.
The anticorrosive welding wire for submerged-arc welding wire rod of high tenacity is based on above-mentioned environmental condition with steel and one type of low-alloy steel developing; It is to belong to the high tenacity corrosion resistant steel, can be applicable to bridge spanning the sea, offshore drilling platforms, transportation with the welding with steel such as boats and ships, submerged pipeline and container.Its chemical composition is (mass fraction %): C≤0.10%; Si≤0.10%; Mn:1.5 0-1.70%; P≤0.015%; S≤0.003%; As≤0.015; Sn≤0.010; Mo:0.33-0.43%; Ni≤0.30%; Ti:0.04-0.08%; B≤0.008%.
Simultaneously; Along with the large scale development of structural member, the toughness of steel is had higher requirement, often the low-temperature flexibility of weld metal becomes the bottleneck that structural member uses; Especially hull steel, deep-sea pipeline etc. are newly to develop the emphasis of welding wire so improve the low-temperature flexibility of weld metal.Two kinds of hull steel low-temperature impact toughness welding wire for submerged-arc welding are arranged in the market: a kind of is the lower welding wire of intensity rank, and yield strength is usually less than 450MPa; A kind of be intensity rank than higher, reach more than 500 MPa, low-temperature flexibility is good, but contains high Mn, Ni, Mo element, cost is high, is not suitable for the national conditions of China.
The present invention has overcome the deficiency of above welding wire, accomplishes the present invention.
First purpose of the present invention provides the anticorrosive welding wire for submerged-arc welding wire rod of a kind of high tenacity.
Second purpose of the present invention provides the anticorrosive welding wire for submerged-arc welding of a kind of high tenacity.
The 3rd purpose of the present invention provide the anticorrosive welding wire for submerged-arc welding of a kind of high tenacity at seawater corrosion resistance with the application on the steel X70-X80.
Summary of the invention
One aspect of the present invention provides a kind of high tenacity anticorrosive welding wire for submerged-arc welding wire rod, and said welding wire wire rod comprises following component (wt%): C≤0.10; Si≤0.10; Mn:1.50-1.70; P≤0.015; S≤0.003; As≤0.015; Sn≤0.010; Mo:0.33-0.43; Ni≤0.30; Ti:0.04-0.08; B :≤0.008, surplus is Fe and unavoidable impurities element.
The present invention provides a kind of high tenacity anticorrosive welding wire for submerged-arc welding on the other hand, and said welding wire comprises following component (wt%): C≤0.10; Si≤0.10; Mn:1.50-1.70; P≤0.015; S≤0.003; As≤0.015; Sn≤0.010; Mo:0.33-0.43; Ni≤0.30; Ti:0.04-0.08; B :≤0.008, surplus is Fe and unavoidable impurities element.
The present invention provide on the other hand the anticorrosive welding wire for submerged-arc welding of this high tenacity at seawater corrosion resistance with the application on the steel X70-X80.
Anticorrosive submerged arc wire rod of high tenacity provided by the invention and welding wire; Adopt low C, low S, low P, low As, low Sn and when steel are smelted, adopted new technologies such as controlled rolling and controlled cooling, high cleanliness smelting, control the content of harmful elements such as P in the steel, S, As, Sn, and handle through vacuum outgas, decalcification and little Ti; Add the B element; Reduce the content of Mn, Ni, Mo, reduced cost, meanwhile; The mechanical performance index of weld seam and low-temperature impact toughness not only do not reduce, and on original basis, have also improved about 100MPa on the contrary.
Welding wire wire rod provided by the invention and welding wire, its production process route are the conventional production process of welding wire wire rod and welding wire.Wherein, welding wire wire rod production process route provided by the invention: converter, refining, die casting, steel ingot are rolling, the steel billet controlled rolling and cooling, weave silk, collect volume, check and packing.The technological process of production of welding wire is: the incoming test of wire rod, rough operation, copper facing (or not having copper facing) and the bundling packaging process of pulling out.
The anticorrosive welding wire for submerged-arc welding of high tenacity provided by the invention belongs to a kind of low-alloy welding wire for submerged-arc welding; Adopt low S, low P, low As design; When guaranteeing that deposited metal has good mechanical performance and welding performance; Utilizing little Ti to handle, make the product tissue morphology is main with the tiny and uniform acicular ferrite, through adding the B of trace, not only increases the quenching degree of steel; And can save expensive alloying element such as a large amount of nickel, chromium, molybdenum, broken the custom that the anticorrosive welding wire for submerged-arc welding of traditional high tenacity contains higher relatively nickel usually.
The combination property of welding wire gained deposited metal provided by the invention is: yield strength >=510MPa; Tensile strength >=600MPa; Percentage elongation >=20%; AKv (under 40 ℃ of conditions) >=150J.The use that is complementary of welding wire provided by the invention and sintered flux, deposited metal than the current potential of mother metal slightly just meets the basic demand that wlding is selected in the corrosive environment of sea water.Can weld Seawate-corrosive-resisting steel, be suitable for soaking entirely in the seawater on band and all demanding structure of splash zone decay resistance.
Specific embodiment
Embodiment below in conjunction with concrete does further explain to the present invention, but embodiment has any restriction to the present invention absolutely not.The change that the those skilled in the art in present technique field do the embodiment of the invention under enlightenment of the present invention all will drop in claims scope of the present invention.
Embodiment 1
According to composition design of the present invention; Adopt low C, low S, low P, low As, low Sn and when steel are smelted, adopted new technologies such as controlled rolling and controlled cooling, high cleanliness smelting; Make by conventional preparation technology of welding wire; Select for use SJ101 as solder flux, the chemical composition of gained welding wire deposited metal such as following table 1.
The finished product chemical composition (wt%) of table 1 embodiment 1 welding wire
| Chemical composition | C | Si | Mn | S | P | Ni | As | Sn | Mo | Ti | B |
| Composition | 0.05 | 0.10 | 1.60 | 0.001 | 0.01 | 0.25 | 0.015 | 0.005 | 0.40 | 0.06 | 0.005 |
Embodiment 2
Production technology is identical with embodiment 1, the chemical composition such as the following table 2 of gained welding wire deposited metal
The finished product chemical composition (wt%) of table 2 embodiment 2 welding wires
| Chemical composition | C | Si | Mn | S | P | Ni | As | Sn | Mo | Ti | B |
| Composition | 0.10 | 0.05 | 1.55 | 0.002 | 0.015 | 0.20 | 0.01 | 0.01 | 0.35 | 0.05 | 0.008 |
Production technology is identical with embodiment 1, and composition is seen table 3
The finished product chemical composition (wt%) of table 3 embodiment 3 welding wires
| Chemical composition | C | Si | Mn | S | P | Ni | As | Sn | Mo | Ti | B |
| Composition | 0.08 | 0.08 | 1.7 | 0.001 | 0.012 | 0.15 | 0.01 | 0.008 | 0.4 | 0.08 | 0.008 |
Embodiment 4
Welding wire shown in the embodiment 1-3 and sea water resistance corrosion steel X70-X80 are carried out spontaneous potential mensuration.This experiment is carried out soaking entirely on the corrosion testing apparatus (test platform is placed on the following 0.5m-1.0m of low tide).Corrosive medium is a natural sea-water, and test temperature is at 30 ± 2 ℃, and the test period is 30 days.Adopt digital voltmeter and saturated potassium chloride calomel reference electrode in the test, measure 2 materials spontaneous potential in seawater every day.Test result is seen table 4.
The stable corrosion potential value (mVSCE) of table 4 embodiment 1-3 welding wire deposited metal and Seawate-corrosive-resisting steel
Annotate: deposited metal adopts welding wire of the present invention+SJ101 solder flux; Stablize the corrosion potential value: after getting 600 hours, the mean value of corrosion potential.
Result of the test is a deposited metal than the current potential of mother metal slightly just, meets the basic demand that wlding is selected in the corrosive environment of sea water.
Claims (4)
1. the anticorrosive welding wire for submerged-arc welding wire rod of high tenacity is characterized in that, comprises following component (wt%): C≤0.10%; Si≤0.10%; Mn:1.5 0-1.70%; P≤0.015%; S≤0.003%; As≤0.015; Sn≤0.010; Mo:0.33-0.43%; Ni≤0.30%; T i:0.04-0.08%; B :≤0.008%.
2. surplus is Fe and unavoidable impurities element.
3. the said wire rod of claim 1 draws the anticorrosive welding wire of high tenacity that forms, and it is characterized in that, comprises following component (wt%): C≤0.10%; Si≤0.10%; Mn:1.5 0-1.70%; P≤0.015%; S≤0.003%; As≤0.015; Sn≤0.010; Mo:0.33-0.43%; Ni≤0.30%; Ti:0.04-0.08%; B :≤0.008%, surplus is Fe and unavoidable impurities element.
The anticorrosive welding wire for submerged-arc welding of the described high tenacity of claim 2 high tenacity anticorrosive with steel X70-X80 with the application on the supporting welding wire for submerged-arc welding on the hot rolled steel plate.
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| CN2012102021906A CN102699568A (en) | 2012-06-19 | 2012-06-19 | High-ductility and anti-corrosion submerged-arc welding wire rod, welding wire and application thereof |
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| CN2012102021906A CN102699568A (en) | 2012-06-19 | 2012-06-19 | High-ductility and anti-corrosion submerged-arc welding wire rod, welding wire and application thereof |
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| JPS63212089A (en) * | 1987-02-26 | 1988-09-05 | Nippon Steel Corp | Welding wire of ferritic stainless steel |
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| DE4228249A1 (en) * | 1991-08-30 | 1993-03-04 | Nippon Kokan Kk | METHOD FOR ELECTROSURGING UNDER PROTECTIVE GAS OF A TUBE AND WELDING WIRE FOR USE IN THE WELDING PROCESS |
| JP3657135B2 (en) * | 1998-11-10 | 2005-06-08 | 株式会社神戸製鋼所 | Solid wire for gas shielded arc welding |
| JP2006315080A (en) * | 2005-04-15 | 2006-11-24 | Nippon Steel & Sumikin Stainless Steel Corp | Austenitic stainless steel welding structure having excellent low temperature toughness and seawater corrosion resistance |
| CN101254575A (en) * | 2007-09-04 | 2008-09-03 | 华北石油钢管厂 | X80 pipeline steel submerged arc welding wire |
| CN101288924A (en) * | 2007-04-20 | 2008-10-22 | 宝山钢铁股份有限公司 | Seawater corrosion resistance submerged arc welding wire rod, welding wire and application thereof |
| CN101549443A (en) * | 2009-05-08 | 2009-10-07 | 西安理工大学 | Submerged arc welding wire material for X80 pipeline steel and preparing method thereof |
| CN101664863A (en) * | 2009-09-24 | 2010-03-10 | 湖北猴王焊材有限公司 | Seawater corrosion resistant submerged arc welding wire |
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2012
- 2012-06-19 CN CN2012102021906A patent/CN102699568A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63212089A (en) * | 1987-02-26 | 1988-09-05 | Nippon Steel Corp | Welding wire of ferritic stainless steel |
| JPH02197380A (en) * | 1989-01-26 | 1990-08-03 | Sumitomo Metal Ind Ltd | Welded steel pipe having excellent sulfide stress crack resistance and production thereof |
| DE4228249A1 (en) * | 1991-08-30 | 1993-03-04 | Nippon Kokan Kk | METHOD FOR ELECTROSURGING UNDER PROTECTIVE GAS OF A TUBE AND WELDING WIRE FOR USE IN THE WELDING PROCESS |
| US5300751A (en) * | 1991-08-30 | 1994-04-05 | Nkk Corporation | Method for gas-shield arc welding of a pipe and weld wire for use in the welding method |
| JP3657135B2 (en) * | 1998-11-10 | 2005-06-08 | 株式会社神戸製鋼所 | Solid wire for gas shielded arc welding |
| JP2006315080A (en) * | 2005-04-15 | 2006-11-24 | Nippon Steel & Sumikin Stainless Steel Corp | Austenitic stainless steel welding structure having excellent low temperature toughness and seawater corrosion resistance |
| CN101288924A (en) * | 2007-04-20 | 2008-10-22 | 宝山钢铁股份有限公司 | Seawater corrosion resistance submerged arc welding wire rod, welding wire and application thereof |
| CN101254575A (en) * | 2007-09-04 | 2008-09-03 | 华北石油钢管厂 | X80 pipeline steel submerged arc welding wire |
| CN101549443A (en) * | 2009-05-08 | 2009-10-07 | 西安理工大学 | Submerged arc welding wire material for X80 pipeline steel and preparing method thereof |
| CN101664863A (en) * | 2009-09-24 | 2010-03-10 | 湖北猴王焊材有限公司 | Seawater corrosion resistant submerged arc welding wire |
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Application publication date: 20121003 |