CN101288924B - Seawater corrosion resistance submerged arc welding wire rod, welding wire and application thereof - Google Patents
Seawater corrosion resistance submerged arc welding wire rod, welding wire and application thereof Download PDFInfo
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- CN101288924B CN101288924B CN2007100397425A CN200710039742A CN101288924B CN 101288924 B CN101288924 B CN 101288924B CN 2007100397425 A CN2007100397425 A CN 2007100397425A CN 200710039742 A CN200710039742 A CN 200710039742A CN 101288924 B CN101288924 B CN 101288924B
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Abstract
The invention provides a seawater corrosion resistant submerged arc welding wire rod and a welding wire thereof. Both the wire rod and the welding wire comprise the following elements (according to the weight percent): C is equal to or less than 0.12, Si is equal to or less than 0.3, Mn is 1.0 to 1.8, S is equal to or less than 0.020, P is equal to or less than 0.020, Cr is 0.60 to 1.50, Ni is 0.15 to 0.50, Mo is 0.10 to 0.30, Cu is 0.05 to 0.30, Ti is 0.01 to 0.08, B is equal to or less than 0.005, Al is equal to or less than 0.030, and the rest is Fe and inevitable impurity elements. The invention also provides the application of the welding wire on the submerged arc welding wire matched with the seawater corrosion resistant steel Q345C-NHY3. The deposited metal of the welding wire provided by the invention has the advantages of excellent dynamic performance, welding performance and seawater corrosion resistant performance, which can be used for welding the seawater corrosion resistant steel. The welding wire rod and the welding wire of the invention are applicable to the structure with high corrosion resistance requirement on the immersion zone and the splash zone of the sea.
Description
Technical field
The invention belongs to metal material field, particularly, the present invention relates to corrosion-resistant welding material, more specifically, the present invention relates to a kind of seawater corrosion resistance welding material.
Background technology
In the development and utilization process of marine resources, steel are being played the part of indispensable role, as trend generating, power generation with sea water, the large-scale Oversea bridge of ocean temperature differential power equipment and beach, the seabed container relevant with ocean development, the various large oceans that are used for development of resources make up and make all too busy to get away steel in field such as hull steel.Seawate-corrosive-resisting steel is for being applied to the class low-alloy steel that above-mentioned environmental condition is developed, Q345C-NHY3 is exactly wherein a kind of, and it is that to belong to Cr-Cu-Mo be the low-carbon and low-alloy Seawate-corrosive-resisting steel, can be applicable to bridge spanning the sea steel-pipe pile and other offshore platform structure spare, its chemical composition is (mass fraction %): C≤0.12, Si≤1.00, Mn≤1.50, P≤0.030, S≤0.030, Cu≤0.40, Cr≤1.30, Mo≤0.30.
As with the supporting welding material of marine steel, not only to have excellent mechanical property and sea water corrosion resistant, and will have shipbuilding technology adaptability preferably.Therefore, the development of new wlding will guarantee that at first the chemical composition of welding wire and deposited metal thereof and the steel grades supporting with it mate substantially, and secondly the transition of alloying element and scaling loss in the time of will considering welding procedure simultaneously are the submerged arc welding fluxes of selection and welding wire adapted.This not only is related to the chemical composition and the mechanical property of weld seam, and directly has influence on the welding technological properties of welding material.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 bottleneck, the especially hull steel that structural member uses, and is newly to develop the emphasis of welding wire so improve the low-temperature flexibility of weld metal.Past is more about the submerged-arc welding wire research of the high low-temperature flexibility of pipe line steel, and less to the welding wire research of hull steel.The high low-temperature flexibility submerged-arc welding wire of the hull steel of Cun Zaiing has two kinds of situations in the market: a kind of is low-intensity rank welding wire, and yield strength is usually less than 300MPa; A kind of is the high intensity levels welding wire, and low-temperature flexibility is good, but contains high manganese, nickel, molybdenum element, and the cost height is not suitable for Chinese national conditions.
The present inventor has made preliminary search to magazine both domestic and external, proceeding, patent documentation etc., retrieves following 10 pieces of pertinent literatures altogether.
1.440MPa the research that the level seawater corrosion resistance buries lonely automatic welding wire (TGM welding wire), Tianjin metallurgy, the 1st phase, 1991: the content of Ni element was higher in the disclosed welding wire of the document, reaches 1.00-1.50%, and cost is higher.
2. the development of seawater corrosion resistance Lincoln weld material peculiar to vessel, developing material and application, Vol.14, No.3,1999: the content of Ni element is higher in the disclosed welding wire of the document, reaches 1.00-1.60%, and cost is higher.
3. high-toughness submerged arc welding welding wire peculiar to vessel, the welding journal, the 26th volume, the 12nd phase, in December, 2005: contain multiple alloying component in the disclosed welding wire of the document, cost is higher.
4. " a kind of high-strength weathering welding wire for submerged-arc welding ", CN200410025569.X: the welding wire design mix that this patent application provided mainly is to solve the atmospheric corrosion resistance problem, what adopt is the weather-proof system of Cu-Cr-Ni alloy, does not contain the Mo element, is essentially different with patent of the present invention.The steam that a large amount of saliferous particulates are arranged in the marine atmosphere because the corrosion activity of Cl-is more intense, adds meteorologic factors such as rain, mist, wind speed, relative humidity, and its extent of corrosion is more serious than the atmosphere of other classifications, so it is higher relatively to solve difficulty.
5. " submerged-arc welding wire for high-strength pipeline steel ", CN 200510018993.6: the welding wire chemical composition design feature that this patent application provided is not contain the Cu element, contains the Cr element, but its content is on the low side, role is different with patent of the present invention.It mainly is applicable to the submerged arc welding of X80 high-strength line-pipe steel.
6. " high-performance welding wire for hidden arc welding of pipeline steel ", CN 01106520.6
7. " a kind of pipe line steel anticorrosive welding wire for submerged-arc welding of high tenacity ", CN 99112925.3: above two pieces of patent documentations relate to the welding that mainly is suitable for the sulfide hydrogen natural gas transmission pipeline.The two does not all adopt Cr, the compound use of Mo alloying element, and the content that adds the Cr element simultaneously separately is on the low side.
8.Welding wire-for forming corrosion resistant weld seams, SU 347140A: the welding wire main feature that this patent documentation provided is not only to adopt Cr, the compound use of Mo alloying element, and containing higher Si alloy, its main purpose is further to improve the corrosion resistance of weld seam.In the document with Si as improving its corrosion proof essential element, and its Mn constituent content is very low.Cu, the Ti, the B element that do not contain patent of the present invention.
9.Welding wire for atmospheric corrosion resistant steel, JP 71032844B: the welding wire main feature that this patent documentation provided is to adopt Cr, Cu, compound the making of Al alloying element to be used for improving its decay resistance.Except that these three alloying elements, all the other are iron, do not contain other alloying element.The Al here usually considers as main anti-corrosion unit, and patent of the present invention mainly is to control as impurity element.
10.SUBMERGED ARC WELDING WIRE, 54-087648[JP 54087648 A]: its chemical composition characteristics of the welding wire that the document provided are to contain lower Mn content, certain C, Si, Mo, Ti, B and Ni≤3.0%, Cu≤0.5%, in Cr≤1.0% one or more, surplus is Fe and unavoidable impurities.It mainly is suitable for the pipeline welding of low temp area, with the maximum differential of patent of the present invention be to contain than higher Ti, B element.
Find still do not have a kind of not only cost-saved at present but also can reach the welding wire design of good mechanical performance and sea water corrosion resistant by above-mentioned preliminary search.The present inventor has finally overcome an above-mentioned difficult problem by constantly groping, thereby has finished the present invention.
Therefore, first purpose of the present invention provides a kind of seawater corrosion resistant submerged arc welding wire wire rod.
Second purpose of the present invention provides a kind of seawater corrosion resistant submerged arc welding wire.
The 3rd purpose of the present invention provides the application of this seawater corrosion resistant submerged arc welding wire on the supporting welding wire for submerged-arc welding of seawater corrosion resistance usefulness steel Q345C-NHY3.
Summary of the invention
One aspect of the present invention provides a kind of seawater corrosion resistant submerged arc welding wire wire rod, and described welding wire wire rod comprises following component (wt%): C≤0.12, Si≤0.3, Mn:1.0～1.8, S≤0.020, P≤0.020, Cr:0.60～1.50, Ni:0.15～0.50, Mo:0.10～0.30, Cu:0.05～0.30, Ti:0.01～0.08, B≤0.005, Al≤0.030, surplus are Fe and unavoidable impurities element.
The present invention provides a kind of seawater corrosion resistant submerged arc welding wire on the other hand, and described welding wire comprises following component (wt%): C≤0.12, Si≤0.3, Mn:1.0～1.8, S≤0.020, P≤0.020, Cr:0.60～1.50, Ni:0.15～0.50, Mo:0.10～0.30, Cu:0.05～0.30, Ti:0.01～0.08, B≤0.005, Al≤0.030, surplus are Fe and unavoidable impurities element.
Seawater corrosion resistant submerged arc welding wire wire rod provided by the invention and welding wire adopt Cr-Cu-Mo alloy system, low C, low Si, low S, low P, a certain amount of Ni and a spot of Ti, do not contain elements such as B, Re, and the Al element is controlled as impurity element.It mainly is to improve its sea water resistance aqueous corrosion performance that welding wire adopts the Cr-Cu-Mo alloy system.Low C, low Si, low S, low P and lower elemental gas mainly are in order to guarantee that deposited metal has high plasticity, impact flexibility and crack resistance in the welding wire.Though the welding wire wire rod contains less Cu, in the welding wire process, there is copper-plating technique, must contain a certain amount of copper in the weld seam like this; Add a certain amount of Ni element, main purpose is in order to guarantee in the weld seam and the proper ratio of Cu, to improve crack resistance, can improving the mechanical property and the welding procedure of its deposited metal simultaneously; Adding a spot of titanium elements mainly is to guarantee that deposited metal has good mechanical performance and weldability.
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 controlled 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 operation and the bundling packaging process of pulling out.
The present invention provides the application of this seawater corrosion resistant submerged arc welding wire on the supporting welding wire for submerged-arc welding of seawater corrosion resistance usefulness steel Q345C-NHY3 on the other hand.
Beneficial effect:
Seawater corrosion resistant submerged arc welding wire provided by the invention belongs to a kind of low-alloy welding wire for submerged-arc welding, adopt low S, P design, when guaranteeing that deposited metal has good mechanical performance and welding performance, utilize the compound action of Cr, Cu, Mo alloying element to improve its sea water corrosion resistant.And broken the custom that traditional high-performance buried arc welding wire contains higher relatively Ni element usually.
The combination property of welding wire gained deposited metal provided by the invention is: yield strength 〉=350MPa; Tensile strength 〉=500MPa; Percentage elongation 〉=22%; Akv (under 20 ℃ of conditions) 〉=100J.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, on the building and other ocean structures as steel sheet pile, steel-pipe pile, the city of bordering on the sea.
The specific embodiment
The present invention is further elaborated with embodiment below, but these embodiment have any restriction to the present invention absolutely not.Any change that those skilled in the art are done in to the invention process under the enlightenment of this specification all will drop in the scope of claims.
Embodiment 1
According to composition design of the present invention, promptly adopt Cr-Cu-Mo alloy system, low C, low Si, low S, low P, a certain amount of Ni, a spot of Ti and Al, make according to conventional preparation technology of welding wire, select for use SJ101 as solder flux.The chemical composition of gained welding wire deposited metal sees that as following table 1, its mechanical property sees Table 6.
The finished product chemical composition (wt%) of table 1 embodiment 1 welding wire
Embodiment 2
Production technology is identical with embodiment 1.The chemical composition of gained welding wire deposited metal sees that as following table 2, its mechanical property sees Table 6.
The finished product chemical composition (wt%) of table 2 embodiment 2 welding wires
Embodiment 3
Production technology is identical with embodiment 1.The chemical composition of gained welding wire deposited metal sees that as following table 3, its mechanical property sees Table 6.
The finished product chemical composition (wt%) of table 3 embodiment 3 welding wires
Embodiment 4
Production technology is identical with embodiment 1.The chemical composition of gained welding wire deposited metal sees that as following table 4, its mechanical property sees Table 6.
The finished product chemical composition (wt%) of table 4 embodiment 4 welding wires
Embodiment 5
Production technology is identical with embodiment 1.The chemical composition of gained welding wire deposited metal sees that as following table 5, its mechanical property sees Table 6.
The finished product chemical composition (wt%) of table 5 embodiment 5 welding wires
The mechanical property of table 6 embodiment 1-5 welding wire deposited metal
Akv* is the impact numerical value mean value of the deposited sample CVN test of five welding wires.
The sea water corrosion resistant of embodiment 6 submerged-arc welding wires
Welding wire shown in the embodiment 1-5 and Seawate-corrosive-resisting steel Q345C-NHY3 are carried out spontaneous potential mensuration.(test platform is placed on below the mean low-water on 0.5～1.5m) and carries out, and corrosive medium is the Qingdao natural sea-water, 30 ± 2 ℃ of test temperatures, 30 days test periods soaking corrosion testing apparatus entirely in this test.Adopt digital voltmeter and saturated KCl calomel reference electrode in the test, measure the spontaneous potential of 2 materials in seawater every day.Test result sees Table 7.
The stable corrosion potential value (mV of table 7 embodiment 1-5 welding wire deposited metal and Seawate-corrosive-resisting steel
SCE)
Annotate: what deposited metal adopted is welding wire of the present invention+SJ101 solder flux; Stablize the corrosion potential value: the mean value of getting 600 hours post-etching current potentials.
Result of the test is a deposited metal than the current potential of mother metal slightly just, and this meets the basic demand that wlding is selected in the corrosive environment of sea water.
Claims (3)
1. a seawater corrosion resistant submerged arc welding wire wire rod is characterized in that, comprises following component (wt%): C≤0.12, Si≤0.3, Mn:1.0～1.8, S≤0.020, P≤0.020, Cr:0.60～1.50, Ni:0.15～0.50, Mo:0.10～0.30, Cu:0.05～0.30, Ti:0.01～0.08, B≤0.005, Al≤0.030, surplus are Fe and unavoidable impurities element.
2. the described wire rod of claim 1 draws the seawater corrosion resistant submerged arc welding wire that forms, and it is characterized in that, comprises following component (wt%): C≤0.12, Si≤0.3, Mn:1.0～1.8, S≤0.020, P≤0.020, Cr:0.60～1.50, Ni:0.15～0.50, Mo:0.10～0.30, Cu:0.05～0.30, Ti:0.01～0.08, B≤0.005, Al≤0.030, surplus are Fe and unavoidable impurities element.
3. the application of the described seawater corrosion resistant submerged arc welding wire of claim 2 on the supporting welding wire for submerged-arc welding of seawater corrosion resistance usefulness steel Q345C-NHY3.
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| CN2007100397425A CN101288924B (en) | 2007-04-20 | 2007-04-20 | Seawater corrosion resistance submerged arc welding wire rod, welding wire and application thereof |
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| CN2007100397425A CN101288924B (en) | 2007-04-20 | 2007-04-20 | Seawater corrosion resistance submerged arc welding wire rod, welding wire and application thereof |
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| CN101288924B true CN101288924B (en) | 2010-04-21 |
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Families Citing this family (14)
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| CN101664863B (en) * | 2009-09-24 | 2013-03-20 | 湖北猴王焊材有限公司 | Seawater corrosion resistant submerged arc welding wire |
| CN102000925B (en) * | 2010-12-17 | 2012-08-08 | 中国船舶重工集团公司第七二五研究所 | Low-alloy welding wire for high-titanium low-molybdenum high-strength and high-toughness twin-wire submerged arc welding |
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| CN102601543A (en) * | 2012-04-09 | 2012-07-25 | 天津大桥焊丝有限公司 | Low-carbon submerged arc welding wire |
| CN102699568A (en) * | 2012-06-19 | 2012-10-03 | 安徽朝山新材料股份有限公司 | High-ductility and anti-corrosion submerged-arc welding wire rod, welding wire and application thereof |
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| CN104014948B (en) * | 2013-12-15 | 2015-12-09 | 许祖泽 | A kind of atmospheric corrosion resistance ferrous alloy and without copper plating soldering wire |
| CN103692107A (en) * | 2013-12-30 | 2014-04-02 | 钢铁研究总院 | Anti-corrosion submerged-arc welding wire for tanker construction |
| CN103862192B (en) * | 2014-02-21 | 2016-06-01 | 宝山钢铁股份有限公司 | A kind of welding wire wire rod and welding wire |
| CN104785956A (en) * | 2015-04-24 | 2015-07-22 | 柳州金茂机械有限公司 | Welding wire for welding technology |
| CN104907731B (en) * | 2015-05-25 | 2017-03-08 | 武汉铁锚焊接材料股份有限公司 | A kind of corrosion-resisting steel welds special welding wire for submerged-arc welding |
| CN105458550A (en) * | 2015-12-28 | 2016-04-06 | 武汉铁锚焊接材料股份有限公司 | Gas protection welding wire for ocean engineering |
| CN109454359A (en) * | 2018-09-17 | 2019-03-12 | 昆山中冶宝钢焊接材料有限公司 | A kind of tensile strength 1000MPa grades of welding wire for submerged-arc welding |
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