CN107252992A - A kind of pipe line steel self-protection flux-cored wire - Google Patents
A kind of pipe line steel self-protection flux-cored wire Download PDFInfo
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- CN107252992A CN107252992A CN201710324050.9A CN201710324050A CN107252992A CN 107252992 A CN107252992 A CN 107252992A CN 201710324050 A CN201710324050 A CN 201710324050A CN 107252992 A CN107252992 A CN 107252992A
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- parts
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- cored wire
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
Abstract
The invention discloses a kind of pipe line steel self-protection flux-cored wire, the raw material of medicine core includes by weight：1 3.5 parts of manganese powder, 0.5 1.2 parts of copper powder, 15.5 20 parts of chromium powder, 3.5 6 parts of titanium valve, 0.8 1.5 parts of nickel powder, 12 parts of titanium dioxide, 12 parts of zirconium dioxide, 2.5 4 parts of Antaciron, 12 parts of magnesium alloy, 0.8 2 parts of molybdenum-iron, 13 parts of ferro-niobium, 24 parts of VN alloy, 46 parts of carbonate, 24 parts of sodium fluoride, 13 parts of calcirm-fluoride, 0.2 0.8 parts of cerium-iron alloy, 0.5 1 parts of yttrium iron alloy, 1.2 2 parts of graphite, 120 150 parts of iron powder.A kind of pipe line steel self-protection flux-cored wire proposed by the present invention, deposited metal dense structure after welding, pore-free and crackle occur, and be well combined with mother metal and performance is stable, welding point has good wearability, corrosion resistance and low-temperature flexibility.
Description
Technical field
The present invention relates to welding wire technology field, more particularly to a kind of pipe line steel self-protection flux-cored wire.
Background technology
Flux-cored wire is a kind of novel welding material, without additional safeguard measure can welding, due to its welding equipment letter
Just the features such as, welding effect is good, is widely used in the fields such as oil-gas pipeline, bridge construction, automobile making and petrochemical industry.Weldering
Connecing the quality of quality, the height of welding efficiency is determined by welding material, welding procedure, and especially welding material is the pass of welding
Also there is composition unreasonable allocation in key, current pipeline steel flux-cored wire, cause deposited metal spilehole and crackle occur, simultaneously
Low-temperature flexibility with it is corrosion-resistant on need to be improved.
The content of the invention
The technical problem existed based on background technology, the present invention is proposed a kind of pipe line steel self-protection flux-cored wire, applied
Postwelding deposited metal dense structure, pore-free and crackle occur, and be well combined with mother metal and performance is stable, welding point has good
Good wearability, corrosion resistance and low-temperature flexibility.
The present invention proposes a kind of pipe line steel self-protection flux-cored wire, by medicine core and the mild steel being coated on the outside of medicine core
Band crust composition, the raw material of medicine core includes by weight：1-3.5 parts of manganese powder, 0.5-1.2 parts of copper powder, 15.5-20 parts of chromium powder, titanium
3.5-6 parts of powder, 0.8-1.5 parts of nickel powder, 1-2 parts of titanium dioxide, 1-2 parts of zirconium dioxide, 2.5-4 parts of Antaciron, magnesium alloy
1-2 parts, 0.8-2 parts of molybdenum-iron, 1-3 parts of ferro-niobium, 2-4 parts of VN alloy, 4-6 parts of carbonate, 2-4 parts of sodium fluoride, calcirm-fluoride 1-3
Part, 0.2-0.8 parts of cerium-iron alloy, 0.5-1 parts of yttrium iron alloy, 1.2-2 parts of graphite, 120-150 parts of iron powder.
In embodiment, the parts by weight of manganese powder can also for 1.5,2,2.5,3 parts, the parts by weight of copper powder can also be
0.6th, 0.7,0.8,0.9,1 part, the parts by weight of chromium powder can also for 16,16.5,17,17.5,18,19 parts, the parts by weight of titanium valve
Can also for 4,4.5,5,5.5 parts, the parts by weight of nickel powder can also for 0.9,1,1.1,1.2,1.3 parts, the weight of titanium dioxide
Part can also for 1.2,1.4,1.6,1.8 parts, the parts by weight of zirconium dioxide can also for 1.2,1.4,1.5,1.6,1.8 parts, silicon
The parts by weight of ferroalloy can also for 2.8,3,3.2,3.4,3.6,3.8 parts, the parts by weight of magnesium alloy can also for 1.2,
1.4th, 1.5,1.6,1.8 parts, the parts by weight of molybdenum-iron can also for 1,1.2,1.4,1.6,1.8 parts, the parts by weight of ferro-niobium can be with
For 1.4,1.8,2,2.2,2.5,2.8 parts, the parts by weight of VN alloy can also for 2.4,2.8,3,3.2,3.5,3.8 parts, carbon
The parts by weight of hydrochlorate can also for 4.4,4.8,5,5.2,5.5,5.8 parts, the parts by weight of sodium fluoride can also for 2.4,2.8,3,
3.2nd, 3.4,3.8 parts, the parts by weight of calcirm-fluoride can also for 1.4,1.8,2,2.4,2.8 parts, the parts by weight of cerium-iron alloy may be used also
Think 0.3,0.4,0.5,0.6,0.7 part, the parts by weight of yttrium iron alloy can also for 0.6,0.7,0.75,0.8,0.9 part, graphite
Parts by weight can also for 1.4,1.5,1.6,1.7,1.8 parts, the parts by weight of iron powder can also be 124,128,130,134,138
Part.
Preferably, the raw material of medicine core includes by weight：1.5-3 parts of manganese powder, 0.7-1 parts of copper powder, 16-19 parts of chromium powder, titanium
4-5.5 parts of powder, 0.9-1.3 parts of nickel powder, 1.3-1.7 parts of titanium dioxide, 1.3-1.7 parts of zirconium dioxide, Antaciron 2.8-3.5
Part, 1.2-1.8 parts of magnesium alloy, 1-1.6 parts of molybdenum-iron, 1.5-2.5 parts of ferro-niobium, 2.5-3.5 parts of VN alloy, carbonate 4.5-
5.5 parts, 2.5-3.5 parts of sodium fluoride, 1.5-2.5 parts of calcirm-fluoride, 0.4-0.6 parts of cerium-iron alloy, 0.6-0.9 parts of yttrium iron alloy, stone
Black 1.4-1.8 parts, 130-140 parts of iron powder.
Preferably, carbonate is one kind or two in lithium carbonate, sodium carbonate, potassium carbonate, calcium carbonate, magnesium carbonate, zinc carbonate
Plant the mixture of composition described above.
Preferably, molybdenum element content is 65-70wt% in molybdenum-iron.
Preferably, Ce elements content is 70-75wt% in cerium-iron alloy.
Preferably, yttrium content is 85-90wt% in yttrium iron alloy.
Preferably, medicine core and the weight of flux-cored wire ratio are 100:25-35.
Preferably, a diameter of 2.8-3.8mm of flux-cored wire.
The present invention is made using conventional fabrication process.
By controlling the content of manganese powder, copper powder, chromium powder, nickel powder in the present invention, improve the intensity of welding point, hardness,
Wearability and corrosion resistance, while enabling welding point that there is good low-temperature toughness and cracking resistance again；By adding and controlling carbon
Hydrochlorate and sodium fluoride, the content of calcirm-fluoride, as gas-forming agent, make flux-cored wire of the present invention have good self-protection function, have
Effect prevents the intrusion of pernicious gas, by adding and controlling the content of titanium valve, magnesium alloy, molybdenum-iron, ferro-niobium, with good
Deoxidation, denitrogenation, desulfurized effect, carbonate, sodium fluoride, calcirm-fluoride and titanium valve, magnesium alloy, molybdenum-iron, ferro-niobium coordinate, with collaboration
Effect, with the floating for promoting non-metallic inclusion, reduces pernicious gas for the infringement of deposited metal, has purified molten bath, drop
The low stomata sensitivity of deposited metal, suppresses deposited metal and produces the phenomenons such as stomata, crackle, while effectively improving welding fluid
The welding performance of mobility, formability and flux-cored wire of the present invention, and make welding point that there is good anti-cracking performance, de- slag
Performance, temperature tolerance and the bond strength with mother metal；By adding and controlling titanium valve, chromium powder, molybdenum-iron, ferro-niobium and the content of graphite,
Generate hardening constituent TiC, Cr23C6、Cr7C3、Mo2C, NbC, and partial-titanium is combined generation TiO with oxygen element, Dispersed precipitate is in deposition
In metal, coordinate with the rare earth element in cerium-iron alloy, yttrium iron alloy, as the particle of heterogeneous forming core, promote acicular ferrite,
The formation of primary carbide and a small amount of granular bainite, the acicular ferrite of generation plays pinning effect in deposited metal, carries
The bond strength of high deposited metal and mother metal, coordinates with VN alloy, with sedimentation reinforcing and refined crystalline strengthening effect, further carries
Dislocation density in high deposited metal structure, improves deposited metal institutional framework, improves the hardness of deposited metal, intensity, low
Warm toughness, corrosion resistance, heat endurance and structural stability, extend the service life of hardware.One kind proposed by the present invention
Deposited metal dense structure after pipe line steel self-protection flux-cored wire, welding, pore-free and crackle occur, and are well combined with mother metal
And performance is stable, welding point has good wearability, corrosion resistance and low-temperature flexibility.
Embodiment
Below, technical scheme is described in detail by specific embodiment.
Embodiment 1
A kind of pipe line steel self-protection flux-cored wire proposed by the present invention, by medicine core and the mild steel being coated on the outside of medicine core
Band crust composition, the raw material of medicine core includes by weight：1 part of manganese powder, 1.2 parts of copper powder, 15.5 parts of chromium powder, 6 parts of titanium valve, nickel powder
0.8 part, 2 parts of titanium dioxide, 1 part of zirconium dioxide, 4 parts of Antaciron, 1 part of magnesium alloy, 2 parts of molybdenum-iron, 1 part of ferro-niobium, vanadium nitrogen close
4 parts of gold, 4 parts of carbonate, 4 parts of sodium fluoride, 1 part of calcirm-fluoride, 0.8 part of cerium-iron alloy, 0.5 part of yttrium iron alloy, 2 parts of graphite, iron powder
120 parts.
Embodiment 2
A kind of pipe line steel self-protection flux-cored wire proposed by the present invention, by medicine core and the mild steel being coated on the outside of medicine core
Band crust composition, the raw material of medicine core includes by weight：3.5 parts of manganese powder, 0.5 part of copper powder, 20 parts of chromium powder, 3.5 parts of titanium valve, nickel powder
1.5 parts, 1 part of titanium dioxide, 2 parts of zirconium dioxide, 2.5 parts of Antaciron, 2 parts of magnesium alloy, 0.8- parts of molybdenum-iron, 3 parts of ferro-niobium, vanadium
2 parts of nitrogen alloy, 6 parts of carbonate, 2 parts of sodium fluoride, 3 parts of calcirm-fluoride, 0.2 part of cerium-iron alloy, 1 part of yttrium iron alloy, 1.2 parts of graphite,
150 parts of iron powder.
Embodiment 3
A kind of pipe line steel self-protection flux-cored wire proposed by the present invention, by medicine core and the mild steel being coated on the outside of medicine core
Band crust composition, the raw material of medicine core includes by weight：2.2 parts of manganese powder, 0.9 part of copper powder, 18 parts of chromium powder, 4.8 parts of titanium valve, nickel powder
1.1 parts, 1.6 parts of titanium dioxide, 1.5 parts of zirconium dioxide, 3.3 parts of Antaciron, 1.5 parts of magnesium alloy, 1.4 parts of molybdenum-iron, ferro-niobium
2.1 parts, 3 parts of VN alloy, 5.2 parts of carbonate, 2.4 parts of sodium fluoride, 1.4 parts of calcirm-fluoride, 0.5 part of cerium-iron alloy, yttrium iron alloy
0.8 part, 1.6 parts of graphite, 135 parts of iron powder.
Wherein, carbonate is calcium carbonate；
Molybdenum element content is 68wt% in molybdenum-iron；
Ce elements content is 73wt% in cerium-iron alloy；
Yttrium content is 88wt% in yttrium iron alloy；
Medicine core and the weight of flux-cored wire ratio are 100:30；
A diameter of 3.2mm of flux-cored wire.
Embodiment 4
A kind of pipe line steel self-protection flux-cored wire proposed by the present invention, by medicine core and the mild steel being coated on the outside of medicine core
Band crust composition, the raw material of medicine core includes by weight：1.5 parts of manganese powder, 1 part of copper powder, 16 parts of chromium powder, 5.5 parts of titanium valve, nickel powder
0.9 part, 1.7 parts of titanium dioxide, 1.3 parts of zirconium dioxide, 3.5 parts of Antaciron, 1.2 parts of magnesium alloy, 1.6 parts of molybdenum-iron, ferro-niobium
1.5 parts, 3.5 parts of VN alloy, 4.5 parts of carbonate, 3.5 parts of sodium fluoride, 1.5 parts of calcirm-fluoride, 0.6 part of cerium-iron alloy, yttrium iron close
0.6 part of gold, 1.8 parts of graphite, 130 parts of iron powder.
Wherein, carbonate is that sodium carbonate, calcium carbonate, magnesium carbonate are 1 by weight:1:The mixture of 1 composition；
Molybdenum element content is 65wt% in molybdenum-iron；
Ce elements content is 70wt% in cerium-iron alloy；
Yttrium content is 85wt% in yttrium iron alloy；
Medicine core and the weight of flux-cored wire ratio are 100:25；
A diameter of 2.8mm of flux-cored wire.
Embodiment 5
A kind of pipe line steel self-protection flux-cored wire proposed by the present invention, by medicine core and the mild steel being coated on the outside of medicine core
Band crust composition, the raw material of medicine core includes by weight：3 parts of manganese powder, 0.7 part of copper powder, 19 parts of chromium powder, 4 parts of titanium valve, nickel powder 1.3
Part, 1.3 parts of titanium dioxide, 1.7 parts of zirconium dioxide, 2.8 parts of Antaciron, 1.8 parts of magnesium alloy, 1 part of molybdenum-iron, 2.5 parts of ferro-niobium,
2.5 parts of VN alloy, 5.5 parts of carbonate, 2.5 parts of sodium fluoride, 2.5 parts of calcirm-fluoride, 0.4 part of cerium-iron alloy, yttrium iron alloy 0.9
Part, 1.4 parts of graphite, 140 parts of iron powder.
Wherein, carbonate is that lithium carbonate, potassium carbonate, zinc carbonate are 1 by weight:1:The mixture of 1 composition；
Molybdenum element content is 70wt% in molybdenum-iron；
Ce elements content is 75wt% in cerium-iron alloy；
Yttrium content is 90wt% in yttrium iron alloy；
Medicine core and the weight of flux-cored wire ratio are 100:35；
A diameter of 3.8mm of flux-cored wire.
Performance test is carried out with the deposited metal after welded by self-shielded flux cord wire to pipe line steel in the embodiment of the present invention 5,
Result is as follows compared with prior art：
| Prior art | Embodiment 5 | |
| Yield strength/MPa | 523 | 620 |
| Tensile strength/MPa | 596 | 722 |
| Elongation/% | 31.5 | 35.6 |
| - 20 DEG C of impact absorbing energy/J | 134 | 170 |
By above table as can be seen that pipe line steel of the present invention with self-protection flux-cored wire compared with prior art, bend
Take intensity, tensile strength, elongation and low-temperature impact work fermentation and be obtained for lifting, the excellent properties shown are more suitable for
Production and application.
More than, it is only the present invention preferably embodiment, but protection scope of the present invention is not limited thereto, and it is any
Those familiar with the art the invention discloses technical scope in, technique according to the invention scheme and its invention
Design is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (8)
1. a kind of pipe line steel self-protection flux-cored wire, it is characterised in that by medicine core and the mild-carbon steel strip being coated on the outside of medicine core
Crust is constituted, and the raw material of medicine core includes by weight：1-3.5 parts of manganese powder, 0.5-1.2 parts of copper powder, 15.5-20 parts of chromium powder, titanium valve
3.5-6 parts, 0.8-1.5 parts of nickel powder, 1-2 parts of titanium dioxide, 1-2 parts of zirconium dioxide, 2.5-4 parts of Antaciron, magnesium alloy 1-2
Part, 0.8-2 parts of molybdenum-iron, 1-3 parts of ferro-niobium, 2-4 parts of VN alloy, 4-6 parts of carbonate, 2-4 parts of sodium fluoride, 1-3 parts of calcirm-fluoride, cerium
0.2-0.8 parts of ferroalloy, 0.5-1 parts of yttrium iron alloy, 1.2-2 parts of graphite, 120-150 parts of iron powder.
2. pipe line steel self-protection flux-cored wire according to claim 1, it is characterised in that the raw material of medicine core is wrapped by weight
Include：1.5-3 parts of manganese powder, 0.7-1 parts of copper powder, 16-19 parts of chromium powder, 4-5.5 parts of titanium valve, 0.9-1.3 parts of nickel powder, titanium dioxide 1.3-
1.7 parts, 1.3-1.7 parts of zirconium dioxide, 2.8-3.5 parts of Antaciron, 1.2-1.8 parts of magnesium alloy, 1-1.6 parts of molybdenum-iron, ferro-niobium
1.5-2.5 parts, 2.5-3.5 parts of VN alloy, 4.5-5.5 parts of carbonate, 2.5-3.5 parts of sodium fluoride, 1.5-2.5 parts of calcirm-fluoride,
0.4-0.6 parts of cerium-iron alloy, 0.6-0.9 parts of yttrium iron alloy, 1.4-1.8 parts of graphite, 130-140 parts of iron powder.
3. pipe line steel self-protection flux-cored wire according to claim 1 or claim 2, it is characterised in that carbonate is lithium carbonate, carbon
The mixture of one or both of sour sodium, potassium carbonate, calcium carbonate, magnesium carbonate, zinc carbonate composition described above.
4. pipe line steel self-protection flux-cored wire according to claim 1 or claim 2, it is characterised in that molybdenum element content in molybdenum-iron
For 65-70wt%.
5. pipe line steel self-protection flux-cored wire according to claim 1 or claim 2, it is characterised in that Ce elements in cerium-iron alloy
Content is 70-75wt%.
6. pipe line steel self-protection flux-cored wire according to claim 1 or claim 2, it is characterised in that yttrium in yttrium iron alloy
Content is 85-90wt%.
7. pipe line steel self-protection flux-cored wire according to claim 1 or claim 2, it is characterised in that medicine core and flux-cored wire
Weight ratio is 100:25-35.
8. pipe line steel self-protection flux-cored wire according to claim 1 or claim 2, it is characterised in that flux-cored wire it is a diameter of
2.5-3.5mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710324050.9A CN107252992A (en) | 2017-05-09 | 2017-05-09 | A kind of pipe line steel self-protection flux-cored wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710324050.9A CN107252992A (en) | 2017-05-09 | 2017-05-09 | A kind of pipe line steel self-protection flux-cored wire |
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| CN107252992A true CN107252992A (en) | 2017-10-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108544132A (en) * | 2018-07-12 | 2018-09-18 | 淮北卓颂建筑工程有限公司 | A kind of preparation method of high abrasion stainless steel welding stick |
| 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 |
| CN115338558A (en) * | 2022-08-12 | 2022-11-15 | 北京机科国创轻量化科学研究院有限公司 | Slag gas combined protection flux-cored wire and postweld heat treatment method thereof |
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| EP2341159A1 (en) * | 2009-12-15 | 2011-07-06 | Kabushiki Kaisha Kobe Seiko Sho | Flux-cored wire for stainless steel arc welding |
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| CN104308391A (en) * | 2014-10-27 | 2015-01-28 | 武汉铁锚焊接材料股份有限公司 | Flux-cored wire for corrosion-resistant steel |
| CN104903046A (en) * | 2012-12-27 | 2015-09-09 | Posco公司 | Ultra high strength flux cored arc welded joint having excellent impact toughness and welding wire for manufacturing same |
| CN106514047A (en) * | 2016-12-09 | 2017-03-22 | 天长市通联焊业有限公司 | Wear-resistant flux-cored wire for stainless steel |
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| EP2341159A1 (en) * | 2009-12-15 | 2011-07-06 | Kabushiki Kaisha Kobe Seiko Sho | Flux-cored wire for stainless steel arc welding |
| CN104903046A (en) * | 2012-12-27 | 2015-09-09 | Posco公司 | Ultra high strength flux cored arc welded joint having excellent impact toughness and welding wire for manufacturing same |
| CN103962746A (en) * | 2014-05-08 | 2014-08-06 | 广东省工业技术研究院(广州有色金属研究院) | Gas shield flux-cored wire for electric arc welding |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108544132A (en) * | 2018-07-12 | 2018-09-18 | 淮北卓颂建筑工程有限公司 | A kind of preparation method of high abrasion stainless steel welding stick |
| 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 |
| CN115338558A (en) * | 2022-08-12 | 2022-11-15 | 北京机科国创轻量化科学研究院有限公司 | Slag gas combined protection flux-cored wire and postweld heat treatment method thereof |
| CN115338558B (en) * | 2022-08-12 | 2023-11-07 | 北京机科国创轻量化科学研究院有限公司 | Slag-gas joint protection flux-cored wire and postweld heat treatment method thereof |
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Application publication date: 20171017 |