CN1970214A - Gas protection welding wire for high-tensile structural steel - Google Patents
Gas protection welding wire for high-tensile structural steel Download PDFInfo
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- CN1970214A CN1970214A CN 200610102232 CN200610102232A CN1970214A CN 1970214 A CN1970214 A CN 1970214A CN 200610102232 CN200610102232 CN 200610102232 CN 200610102232 A CN200610102232 A CN 200610102232A CN 1970214 A CN1970214 A CN 1970214A
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Abstract
It relates to a protective weld wire for high intensity structure steel. The welding wire has the mass percentage of C:0.04-0.12,Mn:1.20 -2.20,Si:0.40-0.90,Ti:0.03-0.20,V:0.03-0.06,B:0.002-0.006, S<=0.025,P<=0.025, with the rest being iron and unavoidable impurities. Through this high intensity structure steel, it can realize the microalloy of the welding seam, preventing the occurrence of cold cracks, improved working environment, reduced welding cost, elevated weld seam force and flexibility, lowered splashing in welding, with cost reduction of more than 1000 Yuan each ton.
Description
Technical field
The invention belongs to the welding wire technology field, relate in particular to a kind of welding wire for gas shielded arc welding for high-tensile structural steel that is used in the Hi-Stren steel welding specially.
Background technology
Hi-Stren steel is a kind of high steel of low-temperature impact toughness, intensity of excellence, have the reduction material consumption, alleviate construction weight, improve the advantage of structural behaviour and security, therefore be extensive use of by engineerings such as engineering machinery, railroad bridge, marine facility and high-pressure bottles.The hot strength of this kind steel is about 600Mpa, yet the welding wire that is complementary with the weld strength of this kind steel is very deficient.At present in welding during above-mentioned Hi-Stren steel, or adopt intensity, and the intensity that contains seam of utilizing this series welding wire to be welded is on the low side, has reduced the performance of Hi-Stren steel at the Er55 of 550-560Mpa series welding wire; Adopting intensity is the ER69-3 series welding wire of 690Mpa, although the intensity that adopts this serial Hi-Stren steel that welding wire welded to contain seam is very high, but because the content of alloy is too high in the welding wire, its weld seam is easy to produce cold crack, influences the welding quality of weld seam and is that engineering is buried serious hidden danger.In addition, in the welding wire of above-mentioned two kinds of series all owing to being added with valuable metallic nickel and metal molybdenum, therefore not only increased the production cost of welding wire greatly, and when weld job, the Hi-Stren steel that will weld must be carried out 150 ℃ of preheatings more than the temperature, so both improve the operational sequence and the difficulty of welding, worsened welder's working environment.
The patent No. is to disclose a kind of " microtitanium-boron high-toughness gas protective welding stick " for the patent of invention of CN1152767C ZL01128326.2, Granted publication number; this welding wire constitutes C:0.03-0.10, Mn:1.00-1.80, Si:0.20-1.00, Ti:0.10-0.20, Ni:0.50-1.40, B:0.002-0.010, S≤0.025, P≤0.025 by the chemical composition of following percetage by weight, and surplus is iron and unavoidable impurities thereof.Therefore the precious metal nickel that contains high-load in this welding wire make its cost improve greatly.When utilizing the Hi-Stren steel of this welding wire welding in addition, because the problem on the alloy ratio, also exist and the Hi-Stren steel that will weld must be carried out 150 ℃ of preheating and weld seam defectives of still having easy generation cold crack thereof more than the temperature.
Summary of the invention
Purpose of the present invention just provides that a kind of production cost is low, the welding wire for gas shielded arc welding for high-tensile structural steel of the welding that is applicable to Hi-Stren steel
The technical scheme that realizes the object of the invention is:
A kind of welding wire for gas shielded arc welding for high-tensile structural steel is characterized by the element by following percentage by weight: C:0.04-0.12, Mn:1.20-2.20, Si:0.40-0.90, Ti:0.03-0.20, V:0.03-0.06, B:0.002-0.006, S≤0.025, P≤0.025 surplus is that iron and unavoidable impurities thereof constitute.
When constituting the copper coating of above-mentioned welding wire for gas shielded arc welding for high-tensile structural steel, the content of its copper should be less than 0.5%;
In order further to improve the impact flexibility of weld seam, in the component that constitutes above-mentioned welding wire, add the Ni of the 0.015-0.060 weight portion of iron weight.
A kind of welding wire for gas shielded arc welding for high-tensile structural steel provided by the present invention compared with prior art, have the following advantages: one, through experiment, utilize this welding wire welding high-tensile structural steel, can realize the microalloying of weld seam, stop the generation of the weld seam generation cold crack phenomenon of welding; And when welding need not preheating, has therefore improved welder's operating environment, has reduced welding cost; Its two owing in this welding wire, contain an amount of Ti, V, B, make the crystal grain refinement more of weld seam, improved the obdurability of weld seam, the degree of splashing when having reduced welding; Its three owing to constitute in this welding wire for gas shielded arc welding for high-tensile structural steel, do not contain valuable metallic nickel and molybdenum, production cost per ton can reduce more than more than 1000 yuan.
The specific embodiment
Embodiment 1
Select for use S and P all to carry out the smelting of welding wire steel less than the steel of 0.020 percetage by weight, its smelting process does not have specific (special) requirements.The Elements C that adds following percentage by weight in the process of smelting: 0.04, Mn:2.00, Si:0.50, Ti:0.10, V:0.04, B:0.005, surplus is iron and unavoidable impurities thereof.
Embodiment 2
Select for use S and P all to carry out the smelting of welding wire steel less than the steel of 0.025 percetage by weight, its smelting process does not have specific (special) requirements.The Elements C that adds following percentage by weight in the process of smelting: 0.12, Mn:1.90, Si:0.60, Ti:0.15, V:0.03, B:0.004, surplus is iron and unavoidable impurities thereof.After being drawn into welding wire with coppered welding wire, its copper-plated amount be in the welding wire ferrous components percent 0.5.
Embodiment 3
Select for use S and P all to carry out the smelting of welding wire steel less than the steel of 0.015 percetage by weight, its smelting process does not have specific (special) requirements.The Elements C that adds following percentage by weight in the process of smelting: 0.08, Mn:1.50, Si:0.80, Ti:0.18, V:0.05, B:0.006, surplus is iron and unavoidable impurities thereof.After being drawn into welding wire with coppered welding wire, its copper-plated amount be in the welding wire ferrous components percent 0.3.
Embodiment 4
Select for use S and P all to carry out the smelting of welding wire steel less than the steel of 0.025 percetage by weight, its smelting process does not have specific (special) requirements.The Elements C that adds following percentage by weight in the process of smelting: 0.10, Mn:1.80, Si:0.90, Ti:0.08, V:0.06, B:0.002, surplus is iron and unavoidable impurities thereof.After being drawn into welding wire with coppered welding wire, its copper-plated amount be in the welding wire ferrous components percent 0.5.
Embodiment 5
Select for use S and P all to carry out the smelting of welding wire steel less than the steel of 0.025 percetage by weight, its smelting process does not have specific (special) requirements.The Elements C that adds following percentage by weight in the process of smelting: 0.06, Mn:1.60, Si:0.40, Ti:0.05, V:0.05, B:0.003, surplus is iron and unavoidable impurities thereof.After being drawn into welding wire with coppered welding wire, its copper-plated amount be in the welding wire ferrous components percent 0.5.
Embodiment 6
Select for use S and P all to carry out the smelting of welding wire steel less than the steel of 0.020 percetage by weight, its smelting process does not have specific (special) requirements.The Elements C that adds following percentage by weight in the process of smelting: 0.05, Mn:2.20, Si:0.70, Ti:0.20, V:0.04, B:0.004, surplus is iron and unavoidable impurities thereof.After being drawn into welding wire with coppered welding wire, its copper-plated amount be in the welding wire ferrous components percent 0.3.
Embodiment 7
Select for use S and P all to carry out the smelting of welding wire steel less than the steel of 0.020 percetage by weight, its smelting process does not have specific (special) requirements.The Elements C that adds following percentage by weight in the process of smelting: 0.12, Mn:1.30, Si:0.55, Ti:0.03, V:0.06, B:0.005, surplus is iron and unavoidable impurities thereof.After being drawn into welding wire with coppered welding wire, its copper-plated amount be in the welding wire ferrous components percent 0.4.
Embodiment 8
Select for use S and P all to carry out the smelting of welding wire steel less than the steel of 0.020 percetage by weight, its smelting process does not have specific (special) requirements.The Elements C that adds following percentage by weight in the process of smelting: 0.09, Mn:1.20, Si:0.75, Ti:0.05, V:0.05, B:0.002, surplus is iron and unavoidable impurities thereof.After being drawn into welding wire with coppered welding wire, its copper-plated amount be in the welding wire ferrous components percent 0.5.
Embodiment 9
Select for use S and P all to carry out the smelting of welding wire steel less than the steel of 0.020 percetage by weight, its smelting process does not have specific (special) requirements.The Elements C that adds following percentage by weight in the process of smelting: 0.05, Mn:1.70, Si:0.65, Ti:0.12, V:0.03, B:0.003, surplus is iron and unavoidable impurities thereof.After being drawn into welding wire with coppered welding wire, its copper-plated amount be in the welding wire ferrous components percent 0.4.
Embodiment 10
Select for use S and P all to carry out the smelting of welding wire steel less than the steel of 0.020 percetage by weight, its smelting process does not have specific (special) requirements.The Elements C that adds following percentage by weight in the process of smelting: 0.06, Mn:1.60, Si:0.45, Ti:0.10, V:0.05, B:0.004, surplus is iron and unavoidable impurities thereof.After being drawn into welding wire with coppered welding wire, its copper-plated amount be in the welding wire ferrous components percent 0.5.
The welding wire (specification is that diameter is 1.6 millimeters) that utilizes the foregoing description to prepare; high-tensile structural steel to the Q460 model is welded by CO 2 gas-shielded; the deposited metal mechanical property parameters of its weld seam is: tensile strength (Rm) 〉=590Mpa; yield strength (Rr0.2) 〉=490Mpa; percentage elongation (A) 〉=19%, V-type impact absorbing energy (AKv) 〉=47J (subzero 29 ℃).
In order further to improve the impact flexibility of weld seam, in the component that constitutes above-mentioned welding wire, add a certain amount of N metal niobium, embodiment is as follows:
Embodiment 11
Select for use S and P all to carry out the smelting of welding wire steel less than the steel of 0.020 percetage by weight, its smelting process does not have specific (special) requirements.The Elements C that in the process of smelting, adds following percentage by weight: 0.04,0.050 of Mn:1.90, Si:0.80, Ti:0.08, V:0.05, B:0.004, iron weight percent Ni and iron and unavoidable impurities thereof.After being drawn into welding wire with coppered welding wire, its copper-plated amount be in the welding wire ferrous components percent 0.5.
Embodiment 12
Select for use S and P all to carry out the smelting of welding wire steel less than the steel of 0.020 percetage by weight, its smelting process does not have specific (special) requirements.The Elements C that in the process of smelting, adds following percentage by weight: 0.12,0.015 of Mn:1.50, Si:0.90, Ti:0.05, V:0.04, B:0.005, iron weight percent Ni and iron and unavoidable impurities thereof.After being drawn into welding wire with coppered welding wire, its copper-plated amount be in the welding wire ferrous components percent 0.4.
Embodiment 13
Select for use S and P all to carry out the smelting of welding wire steel less than the steel of 0.020 percetage by weight, its smelting process does not have specific (special) requirements.The Elements C that in the process of smelting, adds following percentage by weight: 0.08,0.030 of Mn:1.80, Si:0.40, Ti:0.20, V:0.06, B:0.002, iron weight percent Ni and iron and unavoidable impurities thereof.After being drawn into welding wire with coppered welding wire, its copper-plated amount be in the welding wire ferrous components percent 0.3.
Embodiment 14
Select for use S and P all to carry out the smelting of welding wire steel less than the steel of 0.020 percetage by weight, its smelting process does not have specific (special) requirements.The Elements C that in the process of smelting, adds following percentage by weight: 0.10,0.015 of Mn:1.60, Si:0.70, Ti:0.03, V:0.05, B:0.003, iron weight percent Ni and iron and unavoidable impurities thereof.After being drawn into welding wire with coppered welding wire, its copper-plated amount be in the welding wire ferrous components percent 0.4.
Embodiment 15
Select for use S and P all to carry out the smelting of welding wire steel less than the steel of 0.020 percetage by weight, its smelting process does not have specific (special) requirements.The Elements C that in the process of smelting, adds following percentage by weight: 0.06,0.060 of Mn:2.20, Si:0.55, Ti:0.05, V:0.03, B:0.004, iron weight percent Ni and iron and unavoidable impurities thereof.After being drawn into welding wire with coppered welding wire, its copper-plated amount be in the welding wire ferrous components percent 0.5.
According to testing by embodiment 11---the parameter of the wire welding welding seam impact flexibility that embodiment 15 is constituted is: specification is that diameter is 1.6 millimeters); high-tensile structural steel to the Q460 model is welded by CO 2 gas-shielded; the deposited metal mechanical property parameters of its weld seam is: tensile strength (Rm) 〉=590Mpa; yield strength (RrO.2) 〉=495Mpa; percentage elongation (A) 〉=19%, V-type impact absorbing energy (AKv) 〉=49J (subzero 29 ℃).
Claims (3)
1, a kind of welding wire for gas shielded arc welding for high-tensile structural steel; it is characterized by the element by following percentage by weight: C:0.04-0.12, Mn:1.20-2.20, Si:0.40-0.90, Ti:0.03-0.20, V:0.03-0.06, B:0.002-0.006, S≤0.025, P≤0.025, surplus is that iron and unavoidable impurities thereof constitute.
2, a kind of welding wire for gas shielded arc welding for high-tensile structural steel according to claim 1 is characterized in that: constitute the copper that contains in the described welding wire less than 0.50%.
3, a kind of welding wire for gas shielded arc welding for high-tensile structural steel according to claim 1 contains the Ni of the 0.015-0.060 weight portion of weight of iron.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610102232 CN1970214A (en) | 2006-12-05 | 2006-12-05 | Gas protection welding wire for high-tensile structural steel |
| CNB2007101864133A CN100462185C (en) | 2006-12-05 | 2007-11-16 | Welding wire for gas shielded arc welding for high-tensile structural steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610102232 CN1970214A (en) | 2006-12-05 | 2006-12-05 | Gas protection welding wire for high-tensile structural steel |
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| Publication Number | Publication Date |
|---|---|
| CN1970214A true CN1970214A (en) | 2007-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200610102232 Pending CN1970214A (en) | 2006-12-05 | 2006-12-05 | Gas protection welding wire for high-tensile structural steel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101259571B (en) * | 2007-03-08 | 2010-10-06 | 株式会社神户制钢所 | Solid soldering wire for carbon dioxide gas protection arc welding |
| CN101549442B (en) * | 2008-03-31 | 2012-09-26 | 鞍钢股份有限公司 | High-toughness metal core gas shielded welding wire and manufacturing method thereof |
-
2006
- 2006-12-05 CN CN 200610102232 patent/CN1970214A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101259571B (en) * | 2007-03-08 | 2010-10-06 | 株式会社神户制钢所 | Solid soldering wire for carbon dioxide gas protection arc welding |
| CN101549442B (en) * | 2008-03-31 | 2012-09-26 | 鞍钢股份有限公司 | High-toughness metal core gas shielded welding wire and manufacturing method thereof |
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