CN102489902A - Metal powder type flux-cored wire used for welding high-impact-toughness steel - Google Patents
Metal powder type flux-cored wire used for welding high-impact-toughness steel Download PDFInfo
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- CN102489902A CN102489902A CN2011104077973A CN201110407797A CN102489902A CN 102489902 A CN102489902 A CN 102489902A CN 2011104077973 A CN2011104077973 A CN 2011104077973A CN 201110407797 A CN201110407797 A CN 201110407797A CN 102489902 A CN102489902 A CN 102489902A
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- 238000003466 welding Methods 0.000 title claims abstract description 78
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 44
- 239000002184 metal Substances 0.000 title claims abstract description 44
- 239000000843 powder Substances 0.000 title claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 31
- 239000010959 steel Substances 0.000 title claims abstract description 31
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 16
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims abstract description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims abstract description 7
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims abstract description 7
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 25
- 239000003814 drug Substances 0.000 claims description 25
- 239000000203 mixture Substances 0.000 claims description 15
- 229910052748 manganese Inorganic materials 0.000 claims description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 7
- 108010038629 Molybdoferredoxin Proteins 0.000 claims description 7
- HBELESVMOSDEOV-UHFFFAOYSA-N [Fe].[Mo] Chemical compound [Fe].[Mo] HBELESVMOSDEOV-UHFFFAOYSA-N 0.000 claims description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims description 7
- 239000001257 hydrogen Substances 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Inorganic materials [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 6
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 6
- 235000014380 magnesium carbonate Nutrition 0.000 claims description 6
- 239000001095 magnesium carbonate Substances 0.000 claims description 6
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 6
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims description 5
- 229910052700 potassium Inorganic materials 0.000 claims description 5
- 239000011591 potassium Substances 0.000 claims description 5
- 235000013024 sodium fluoride Nutrition 0.000 claims description 5
- 239000011775 sodium fluoride Substances 0.000 claims description 5
- 239000002893 slag Substances 0.000 abstract description 9
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 4
- 239000011733 molybdenum Substances 0.000 abstract description 4
- 238000010891 electric arc Methods 0.000 abstract description 3
- 230000007704 transition Effects 0.000 abstract description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract 2
- 230000004907 flux Effects 0.000 abstract 2
- 229910000616 Ferromanganese Inorganic materials 0.000 abstract 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 abstract 1
- 239000000395 magnesium oxide Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 239000011777 magnesium Substances 0.000 description 9
- 239000011572 manganese Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 6
- 229910052749 magnesium Inorganic materials 0.000 description 5
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000003818 cinder Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000005275 alloying Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000003019 stabilising effect Effects 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 229910000720 Silicomanganese Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Nonmetallic Welding Materials (AREA)
Abstract
The invention relates to a metal powder type gas shield flux-cored wire used for welding high-impact-toughness steel. The metal powder type gas shield flux-cored wire comprises 0.01-0.1wt% of C, 0.1-0.4wt% of Mn, 0.01-0.03wt% of Si, 0.005-0.015wt% of S, 0.005-0.015wt% of P and balance of ferric low carbon steel skin as well as flux accounting for 14-25% of the total weight of the metal powder type gas shield flux-cored wire, wherein the flux comprises the following components in percent by the total weight of the metal powder type gas shield flux-cored wire: 1.2-4.0% of middle-carbon ferromanganese, 0.20-2.0% of ferrosilicon powder, 0.05-0.5% of magnesium powder, 0.1-2.0% of molybdenum ferrous powder, 1-2% of nickel powder, 0.05-0.2% of fused magnesia, 0.01-0.3% of fluoride and 7-14% of ferrous powder; and all the components are blended and then are placed on a low-carbon steel thin steel strip to be rolled into strips and be drawn into wires. The metal powder type gas shield flux-cored wire provided by the invention has the characteristics that almost no slag is left on a deposited metal after welding, continuous multi-layer welding without removing slag can be carried out, welding speed is fast and efficiency is high, welding technological property is good, electric arc is stable, splashing is less and moulding is beautiful, welding low temperature toughness is high and vertical down welding can be realized by virtue of short circuit transition.
Description
Technical field
The invention belongs to Metal Material Welding and produce and use welding wire, particularly a kind of have the high impact toughness steel and weld and use the metal powder type flux-cored wire; This flux-cored wire especially is suitable under the low-temperature working condition, having the ocean engineering of high impact toughness and the welding of large scale structure steel part.
Background technology
Straight and even the improving constantly of smelting water of domestic and international steel; Many industries are had higher requirement to the impact flexibility of steel; Increase along with ocean engineering and large welded structures application; Q460q (composition is that C≤0.18%, Mn:1.0-1.80%, Si≤0.55%, S≤0.01%, P≤0.025%, Ni≤0.70%, surplus are iron), Q500q (C≤0.18%, Mn:1.0-1.70%, Si≤0.55%, S≤0.01%, P≤0.025%, Ni≤1.0%, surplus are iron) class have high impact toughness under cryogenic conditions steel are used by a large amount of, thus exploitation to be used for the welding material of the good steel of cryogenic property extremely urgent.In the welding of these type of steel, the welding material of usefulness has welding rod, solid core welding wire usually, common flux-cored wire (acid, alkalescence).When adopting the welding rod welding, every root bead bar all will be lost the discard electrode of 20~30mm, both can cause the continuity of waste, its welding of material also poor.Common flux-cored wire is compared with solid welding wire, and under same welding conditions, the deposition rate of flux-cored wire is than the high 20-30% of solid core welding wire.Be 201010156680.8 in the patent No., denomination of invention in the patent documentation of " gas shielded flux-cored wire for welding with low temperature, high toughness and full positions ", disclose a kind of with TiO
2Be main high tenacity flux-cored wire, this welding wire has low-temperature flexibility characteristics preferably, but in welding process, can produce a large amount of slags, has not only influenced welding efficiency, but also has strengthened welder's labour intensity.In order to reduce slag amount in the flux-cored wire welding process; Up to the present; A lot of schemes were proposed, as the patent No. be 200810010814.8, denomination of invention in the patent documentation of " a kind of high-toughness metal core gas protective welding wire and manufacturing approach thereof ", disclosed a kind of high-toughness metal core gas protective welding wire and manufacturing approach, though this welding wire has reduced slag amount in the flux-cored wire welding process to a certain extent; But still exist the labour intensity that to realize the welding of not scarfing cinder continuous multilayer, operator high; And weld seam low-temperature flexibility poor (20 ℃ kv only 100J) can't satisfy the demand of projects such as ocean engineering to low-temperature flexibility, defective such as welding efficiency is low.
Summary of the invention
The objective of the invention is defective to the background technology existence; Develop and a kind ofly have high impact toughness steel welding and use the metal powder type flux-cored wire; To improve processing performance and the physicochemical property that Q460q, Q500q class is had the welding of high impact toughness steel under the low-temperature working condition, it is good to reach welding technological properties, arc stability, splash little, appearance of weld is attractive in appearance; The slag amount that reduces significantly after welding is welded to carrying out not scarfing cinder continuous multilayer; And effectively improve the combination property of weld seam, particularly low-temperature flexibility and welding efficiency, and also can realize upright welding downwards through short circuiting transfer, reduce operator's purposes such as labour intensity.
The solution of flux-cored wire of the present invention is that the metal sheath employing of welding wire contains: C 0.01-0.1wt%, Mn 0.1-0.4wt%, Si 0.01-0.03wt%, S 0.005-0.015wt%, P 0.005-0.015wt%, surplus are the metal sheath of the thin steel band of the mild steel of iron as welding wire; In its medicine core each composition with the weight percent meter of whole welding wires, be respectively: mid-carbon fe-mn 1.2-4.0wt%, ferrosilicon powder 0.20-2.0wt%, magnesium (Mg) powder 0.05-0.5wt%, molybdenum-iron powder 0.1-2.0wt%, nickel (Ni) powder 1-2wt%, fused magnesite 0.05-0.2wt%, fluoride 0.01-0.3wt%, iron powder 7-14wt%; Each composition in the medicine core is mixed the back, places as on the thin steel band of the mild steel of welding wire crust, roll (parcel) slivering and be pulled to into the silk of required diameter.
The content of above-mentioned flux-cored wire Chinese medicine core accounts for the 14-25wt% of whole welding wire weight, the diameter of medicine core is Φ 1.0-3.0mm.Said fluoride is one or more in calcirm-fluoride, sodium fluoride, potassium fluotitanate and the oryolite.And said iron powder is reduced iron powder or atomized iron powder.Diffusible hydrogen content is less than 4mL/100g in the deposited metal after the flux-cored wire welding according to the invention.
The main effect of each composition is following in the medicine core of the present invention:
Mid-carbon fe-mn: manganese is important deoxidier, also is the important alloying constituent of weld metal simultaneously.The intensity and the toughness of butt welded seam metal have material impact.Manganese can reduce austenite to the ferritic transformation temperature, promotes AF (pin is strengthened ferrite) to form; The increase of manganese content can improve the low-temperature impact toughness of weld seam, but then opposite when too high, and in addition, manganese can also form MnS with sulphur, reduce the impurity content of weld seam.
Ferrosilicon: silicon is that important deoxidier also is the important alloying constituent of weld metal simultaneously, and silicon can reduce the oxygen content of weld metal, improves the impact flexibility of weld metal, but then opposite when too high; Adopt its effect of silicomanganese combined deoxidation better.
The magnesium powder: magnesium is strong deoxidier, and the oxygen content of controlling weld metal is had important function, can also play the effect of stabilising arc simultaneously; But can increase weld fumes during too high levels, be unfavorable for welder's health.
Molybdenum-iron: molybdenum can significantly improve weld metal intensity, but too high meeting influence weld metal toughness; Adopt the source of molybdenum-iron in order to control transition (infiltration) to molybdenum content, the present invention of weld metal as molybdenum.
Nickel: nickel is as inovulant, crystal grain thinning, reduces segregation, promotes the formation of acicular ferrite, thereby improve ferritic toughness; Nickel also can strengthen dislocation energy, increases crackle expansion consumed work, improves low-temperature flexibility.
Fused magnesite: be used to improve appearance of weld, increase the low-temperature flexibility of slag basicity and weld seam, the gas permeability of slag is had certain help.
Fluoride: fluorine is in order to the content of diffusible hydrogen in the reduction deposited metal, but content of fluoride is too high, and electric arc is unstable during welding, splashing becomes big, electric arc sound variation, and the present invention adopts one or more in calcirm-fluoride, sodium fluoride, potassium fluotitanate and the oryolite.
Iron: add iron in the medicine core and can improve welding efficiency and provide a spot of oxygen to be used for stabilising arc, mainly adopt reduced iron powder or atomized iron powder in order to guarantee high deposition efficiency, the present invention
Thereby the present invention promptly cooperates through organic assembly of above-mentioned drug core component and with the mild steel crust and realizes its goal of the invention.
The present invention adopts the metal powder type flux-cored wire that Q460q, Q500q class are had under the low-temperature working condition after the high impact toughness steel weld; Tensile strength >=the 550MPa of its deposited metal, yield strength >=470MPa, percentage elongation >=24% ,-45 ℃ of impacts reach 80J;-50 ℃ of impacts reach 70J, and the deposited metal diffusible hydrogen content is less than 4mL/100g.Thereby improved processing performance and physicochemical property, improved the combination property of weld seam effectively, solved weld metal in the not enough problem of low-temperature working condition toughness to above-mentioned steel welding; And it is good to have a welding technological properties; Arc stability, splash little, appearance of weld is attractive in appearance; Almost do not have slag after the welding, can effectively carry out not scarfing cinder continuous multilayer welding and speed fast, the combination property of weld seam, particularly low-temperature flexibility are high, welding efficiency is high; And also can realize upright welding downwards through short circuiting transfer, characteristics such as welder's the labour intensity and the cost of welding are low.
The specific embodiment
Embodiment 1: adopt the crust of the steel band of (wide * thick) 14 * 0.9mm as welding wire, its chemical composition is that C 0.04wt%, Mn 0.25wt%, Si 0.015wt%, S 0.01wt%, P 0.01wt%, surplus are iron; Producing the 100Kg welding wire with preparation is example; Present embodiment medicine core accounts for the heavy 15wt% of whole welding wire, and each composition is in the medicine core: mid-carbon fe-mn 3.4Kg, ferrosilicon powder 1.0Kg, magnesium (Mg) powder 0.4Kg, molybdenum-iron powder 0.2Kg, nickel powder 1.0Kg, fused magnesite 0.1Kg, calcirm-fluoride 0.2Kg, add iron powder 8.7 Kg to medicine core batching gross weight 15Kg; For use after then each composition in the medicine core being mixed;
Steel band is placed in the welding wire make-up machine, medicine core compound for use is injected laterally be bent in the steel band groove of " U " type successively, so roll slivering, through the silk that is pulled to Φ 1.2mm.
Present embodiment is at welding parameter: I=250-260A, U=28-30V, gas flow 20L/min, 80%Ar+ surplus CO
2, Q460q model steel is welded, its:
Deposited metal composition (%)
C | Mn | Si | S | P | Ni | Mo |
0.04 | 1.35 | 0.42 | 0.007 | 0.010 | 0.95 | 0.1 |
Deposited metal mechanical performance (mist):
Diffusible hydrogen content: 3.0mL/100g.
Embodiment 2: the crust of welding wire is identical with embodiment 1; Producing the 100Kg welding wire with preparation is example; Present embodiment medicine core accounts for the heavy 20wt% of whole welding wire, and each composition is in the medicine core: mid-carbon fe-mn 3.9Kg, ferrosilicon powder 1.0Kg, magnesium (Mg) powder 0.4Kg, molybdenum-iron powder 0.2Kg, nickel powder 1.0Kg, fused magnesite 0.1Kg, sodium fluoride and potassium fluotitanate 0.2Kg (each 0.1Kg), add iron powder 13.2Kg to medicine core batching gross weight 20Kg; All the other are identical with embodiment 1, its:
Deposited metal composition (%)
C | Mn | Si | S | P | Ni | Mo |
0.04 | 1.5 | 0.37 | 0.007 | 0.010 | 0.95 | 0.14 |
Deposited metal mechanical performance (mist):
Diffusible hydrogen content: 3.2mL/100g.
Embodiment 3: the crust of welding wire is identical with embodiment 1; Producing the 100Kg welding wire with preparation is example; Present embodiment medicine core accounts for the heavy 20wt% of whole welding wire, and each composition is in the medicine core: mid-carbon fe-mn 3.4Kg, ferrosilicon powder 1.0Kg, magnesium (Mg) powder 0.5Kg, molybdenum-iron powder 0.2Kg, nickel powder 1.0Kg, fused magnesite 0.2Kg, calcirm-fluoride and potassium fluotitanate sodium fluoride 0.2Kg (each 0.1Kg), add iron powder 13.5Kg to medicine core batching gross weight 20Kg; For use after then each composition in the medicine core being mixed;
Steel band is placed in the welding wire make-up machine, medicine core compound for use is injected laterally be bent in the steel band groove of " U " type successively, so roll slivering, through the silk that is pulled to Φ 2.0mm.
Present embodiment is at welding parameter: I=350-360A, U=30-31V, gas flow 25L/min, 80%Ar+ surplus CO
2, Q500q model steel is welded it:
Deposited metal composition (%)
C | Mn | Si | S | P | Ni | Mo |
0.04 | 1.35 | 0.55 | 0.007 | 0.010 | 0.91 | 0.1 |
Deposited metal mechanical performance (mist):
Diffusible hydrogen content: 3.5mL/100g.
Claims (5)
1. one kind has high impact toughness steel welding and uses the metal powder type flux-cored wire; Comprise metal sheath and medicine core thereof, the metal sheath that it is characterized in that welding wire adopts that to contain .C 0.01-0.1wt%, Mn 0.1-0.4wt%, Si 0.01-0.03wt%, S0.005-0.015wt%, P 0.005-0.015wt%, surplus be the metal sheath of the thin steel band of mild steel of iron as welding wire; In its medicine core each composition with the weight percent meter of whole welding wires, be respectively: mid-carbon fe-mn 1.2-4.0wt%, ferrosilicon powder 0.20-2.0wt%, magnesium powder 0.05-0.5wt%, molybdenum-iron powder 0.1-2.0wt%, nickel powder 1-2wt%, fused magnesite 0.05-0.2wt%, fluoride 0.01-0.3wt%, iron powder 7-14wt%; Each composition in the medicine core is mixed the back, places as on the thin steel band of the mild steel of welding wire crust, roll slivering and be pulled to into the silk of required diameter.
2. have high impact toughness steel welding and use the metal powder type flux-cored wire by claim 1 is said, it is characterized in that the diameter that the content of said flux-cored wire Chinese medicine core accounts for the 14-25wt% of whole welding wire weight, medicine core is Φ 1.0-3.0mm.
3. have high impact toughness steel welding and use the metal powder type flux-cored wire by claim 1 is said, it is characterized in that said fluoride is one or more in calcirm-fluoride, sodium fluoride, potassium fluotitanate and the oryolite.
4. have high impact toughness steel welding and use the metal powder type flux-cored wire by claim 1 is said, it is characterized in that said iron powder is reduced iron powder or atomized iron powder.
5. have high impact toughness steel welding and use the metal powder type flux-cored wire by claim 1 is said, it is characterized in that diffusible hydrogen content is less than 4mL/100g in the deposited metal after said flux-cored wire welds.
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Cited By (11)
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CN103028864A (en) * | 2012-12-14 | 2013-04-10 | 中国船舶重工集团公司第七二五研究所 | High-strength and high-toughness metal powder type flux-cored wire with no need of being pre-heated before welded |
CN103071941A (en) * | 2013-01-16 | 2013-05-01 | 四川大西洋焊接材料股份有限公司 | High-toughness and anti-hydrogen induction sulfide stress corrosion crack metal powder flux-cored wire and preparation method |
CN103551758A (en) * | 2013-10-11 | 2014-02-05 | 四川大西洋焊接材料股份有限公司 | High-toughness metal powder type flux-cored wire for nuclear power projects |
CN105583548A (en) * | 2016-01-26 | 2016-05-18 | 北京力佳利焊接材料有限公司 | High-strength low-alloy steel metal-cored welding wire capable of being used for dual-gas shielded arc welding |
CN105772983A (en) * | 2016-01-18 | 2016-07-20 | 威县亚泰密封件有限公司 | Flux-cored wire matched with high-strength bridge steel Q500qE and preparation method thereof |
CN108907506A (en) * | 2018-09-06 | 2018-11-30 | 四川大西洋焊接材料股份有限公司 | Input-energy steel special welding wire and preparation method |
CN110640347A (en) * | 2019-11-13 | 2020-01-03 | 四川大西洋焊接材料股份有限公司 | Carbon dioxide gas shielded flux-cored wire for hardfacing and preparation method thereof |
US10668572B2 (en) | 2016-11-16 | 2020-06-02 | Lincoln Global, Inc. | Welding electrode wires having alkaline earth metals |
CN113909737A (en) * | 2021-11-08 | 2022-01-11 | 山东寿光巨能特钢有限公司 | Flux core and welding wire for improving low-temperature toughness |
US11247291B2 (en) | 2016-11-16 | 2022-02-15 | Lincoln Global, Inc. | Welding electrode wires having alkaline earth metals |
CN114161024A (en) * | 2021-11-10 | 2022-03-11 | 武汉铁锚焊接材料股份有限公司 | Metal powder type flux-cored wire and preparation method and application thereof |
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CN105583548B (en) * | 2016-01-26 | 2017-12-01 | 北京力佳利焊接材料有限公司 | Aldecor metal core welding wire available for double gas shielded arc weldings |
CN105583548A (en) * | 2016-01-26 | 2016-05-18 | 北京力佳利焊接材料有限公司 | High-strength low-alloy steel metal-cored welding wire capable of being used for dual-gas shielded arc welding |
US10668572B2 (en) | 2016-11-16 | 2020-06-02 | Lincoln Global, Inc. | Welding electrode wires having alkaline earth metals |
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