CN109664051A - A kind of corrosion-proof and high-strength high-ductility submerged arc welding flux and application thereof - Google Patents
A kind of corrosion-proof and high-strength high-ductility submerged arc welding flux and application thereof Download PDFInfo
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- CN109664051A CN109664051A CN201811631401.1A CN201811631401A CN109664051A CN 109664051 A CN109664051 A CN 109664051A CN 201811631401 A CN201811631401 A CN 201811631401A CN 109664051 A CN109664051 A CN 109664051A
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- corrosion
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- submerged arc
- arc welding
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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
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/362—Selection of compositions of fluxes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The present invention provides a kind of corrosion-proof and high-strength high-ductility submerged arc welding flux and application thereof, submerged arc welding flux includes the component of following parts by weight: 5-11 parts of acidic oxide, 48-61 parts of basic anhydride, 30-40 parts of fluoride, 0.1-0.5 parts of Yttrium base rare earth.A kind of corrosion-proof and high-strength high-ductility submerged arc welding flux of the present invention and its application improve corrosion resistance, crack resistance, realize the welding for being used for the bridge steel of resistance to sea atmosphere corrosion.
Description
Technical field
The invention belongs to SAW consumable material technical fields, more particularly, to a kind of submerged arc welding flux of corrosion-proof and high-strength high-ductility.
Background technique
It builds with Bridges in Our Country to high speed, heavy duty, large span direction and develops, for the operational safety and use for ensureing bridge
Service life, weathering steel theory have begun applied in bridge construction.Nowadays, the resistance to ocean under atmosphere-ocean climatic environment is big
Gas corrosion steel and wlding will have a big brand-new Development area.
In recent years, as ocean corrosion resisting steel alternate standard is continuously available approval, marine atmosphere corrosion-resisting steel will gradually be taken
Become the mainstream of bridge spanning the sea corrosion protection mode for Coated Steels.Only Japan released the concept of the series wlding and passed through early stage
Experimental verification, and China still belongs to blank in the research of this aspect.
For the bridge steel of resistance to sea atmosphere corrosion, Anshan iron and steel plant has completed the steel series research, therefore carries out with Anshan iron and steel plant
Cooperation, it would be highly desirable to carry out the research and development of the series submerged arc welding material of the mating steel.
Summary of the invention
In view of this, the present invention is directed to propose a kind of corrosion-proof and high-strength high-ductility submerged arc welding flux and application thereof, improves corrosion resistance, resists
Fragility realizes the welding for being used for the bridge steel of resistance to sea atmosphere corrosion.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of corrosion-proof and high-strength high-ductility submerged arc welding flux, the component including following parts by weight: 5-11 parts of acidic oxide, alkalinity
48-61 parts of oxide, 30-40 parts of fluoride, 0.1-0.5 parts of Yttrium base rare earth.
Preferably, the acidic oxide includes 2~5 parts and 3~6 parts of titanium-type rutile of silicon mud.
Preferably, the basic anhydride include 18~22 parts of calcium oxide, 25~28 parts of fused magnesite, barium monoxide 1~5
Part, sodium and 4~6 parts of sylvite.
Preferably, the sodium and sylvite include the addition mass ratio of potassium silicate and sodium metasilicate, wherein potassium silicate and sodium metasilicate
Example is 2:1.
Preferably, the fluoride is calcirm-fluoride 30-40 parts.
Preferably, the solder flux medicinal powder particle granularity is 10-60 mesh.
Preferably, matching used includes the welding wire of resistance to sea atmosphere corrosion, the resistance to sea atmosphere corrosion weldering of preferably 1Ni
Silk.
Preferably, deposited metal meets the coefficient of resistance to sea atmosphere corrosion V > 1.2；Wherein, the formula of V is V=1/ { (1.0-
0.16[C])×(1.05-0.05[Si])×(1.04-0.016[Mn])
×(1.0-0.5[P])×(1.0+1.9[S])×(1.0-0.10[Cu])
×(1.0-0.12[Ni])×(1.0-0.3[Mo])×(1.0-1.7[Ti])}；Wherein [C], [Si], [Mn],
[P], [S], [Cu], [Ni], [Mo] and [Ti] respectively represents the deposited metal content hundred of C, Si, Mn, P, S, Cu, Ni, Mo and Ti
Divide ratio.
A kind of corrosion-proof and high-strength high-ductility submerged arc welding flux purposes, the submerged arc welding flux are applied to the bridge of resistance to sea atmosphere corrosion 1Ni steel
The welding of plate.
Compared with the existing technology, a kind of corrosion-proof and high-strength high-ductility submerged arc welding flux of the present invention has the advantage that
(1) corrosion-proof and high-strength high-ductility submerged arc welding flux of the invention without adding alloying element, but the impact flexibility of weld seam
With yield strength and weld seam processing performance, absolute altitude is referred both in national standard.Deposited metal tensile strength >=490MPa, tensile strength
Yield strength >=400MPa, elongation percentage >=22%, -40 DEG C of impact flexibility >=60J, the coefficient of resistance to sea atmosphere corrosion V >=1.2.And
And there is good corrosion resisting property and cracking resistance.
(2) corrosion-proof and high-strength high-ductility submerged arc welding flux of the present invention is matched with the welding wire of resistance to sea atmosphere corrosion, is met
The postwelding deposited metal coefficient of resistance to sea atmosphere corrosion V > 1.2, and de- slag is easy, welding bead beautiful appearance, is reduced postwelding and is manually tieed up
Shield, it is ensured that welding quality.
Ingredient action principle:
Magnesia is good slag making materials, it can increase slag gas permeability, and magnesia is basic anhydride, can be with
The viscosity for reducing slag is that de- slag is more easier, guarantees the pure property of weld seam.
Calcium oxide effect is to guarantee welding arc stablility, forms a kind of atmosphere of reduction around electric arc, prevents in air
The pernicious gases such as vapor, carbon dioxide, nitrogen enter deposited metal, the welding slag of generation is equably covered on weld seam gold
Metal surface, slows down the cooling velocity of weld metal, and obtains good appearance of weld, guarantee slag have suitable fusing point,
Density, slag form slag under the high temperature action of electric arc, and a series of chemical metallurgy reactions occur, remove oxide and sulphur, phosphorus
Equal objectionable impurities.To improve the low-temperature impact toughness of weld seam.
Rutile belongs to strong slag former in the present invention, can play the role of stable electric arc, in the present invention welding side
Formula is submerged arc welding, and skull auxiliary is needed to guarantee welding bead molding, and it is physical can to reconcile slag for rutile fusing point with higher
Can, can rapid condensation, auxiliary welding bead molding and de- slag, guarantee the craftsmanship of weld seam.
The addition of fluoride is one of technology of the invention, and fluoride is calcirm-fluoride, and calcirm-fluoride can be with hydrogen knot in weld seam
It synthesizes hydrogen fluoride gas to overflow, advantageously reduces the partial pressure of hydrogen in arc atmosphere, to play the role of dehydrogenation, reduce in weld seam
The content of harmful element hydrogen reduces the generation of hydrogen induced cracking.
The addition of Yttrium base rare earth element is innovative point of the invention, and rare earth element can further refine crystal grain, metallographic structure
Acicular ferrite is formed, a small amount of Yttrium base rare earth can be such that the non-metallic inclusion glomeration between weld grain is distributed, can be improved
The low-temperature impact toughness of weld seam.It can satisfy requirement of the horizontal position welding welding welding material to low-temperature flexibility.In the present invention, contain
Amount is in 0.1-0.5 parts by weight.
Specific embodiment
In addition to being defined, technical term used in following embodiment has universal with those skilled in the art of the invention
The identical meanings of understanding.Test reagent used in following embodiment is unless otherwise specified conventional biochemical reagent；It is described
Experimental method is unless otherwise specified conventional method.
Below with reference to embodiment, the present invention will be described in detail.
MgO >=95% in fused magnesite；SiO in silicon mud2>=98%；TiO2 >=98% in titanium-type rutile.
Embodiment 1:
(1) various raw-material weight numbers are as follows: (part/kg) in solder flux medicinal powder
(2) adhesive is high mould potassium-sodium water glass, and modulus 2.8-3.1, potassium sodium ratio are 3:1；High mould potassium-sodium water glass with
The weight ratio of solder flux medicinal powder is 1:4~5.
(3) submerged arc welding flux is made according to mentioned component to be detected, is provided according to national standard GB/T 12470-2003 standard,
Cooperate the proprietary flux-cored wire of resistance to sea atmosphere corrosion (the JQ.YJM500NH welding wire of Golden Bridge's independent research), carries out deposited metal
Learn constituent analysis, deposited metal Mechanics Performance Testing.Welding conditions: the source of welding current is DC reverse connection, thermal weld stress 18-
145-150 DEG C of temperature between 19KJ/cm, road.
1. solder type: activated rosin flux.
2. solder flux S/P content:
| Project | S | P |
| Guarantee value (%) | ≤0.035 | ≤0.040 |
| Example value (%) | 0.015 | 0.025 |
3. deposited metal composition
| Project | S | P | O | N |
| Guarantee value (%) | ≤0.015 | ≤0.025 | - | - |
| Example value (%) | 0.010 | 0.003 | 0.054 | 0.0048 |
4. deposited metal mechanical property measured value
5. buckling test: the curved curved equal qualification of back in face.
(4) welding wire (welding wire that Anshan iron and steel plant is smelted of the 1Ni series of the solder flux cooperation Anshan iron and steel plant production of the embodiment
JQ.MH500NH), the postwelding deposited metal coefficient of resistance to sea atmosphere corrosion V:
| Project | C | Si | Mn | P | S | Cu | Ni | Mo | Ti |
| Example value (%) | 0.043 | 0.021 | 1.03 | 0.010 | 0.003 | 0.48 | 1.6 | 0.26 | - |
V=1/ { (1.0-0.16 [C]) × (1.05-0.05 [Si]) × (1.04-0.016 [Mn])
×(1.0-0.5[P])×(1.0+1.9[S])×(1.0-0.10[Cu])
× (1.0-0.12 [Ni]) × (1.0-0.3 [Mo]) × (1.0-1.7 [Ti]) }=1.325
Embodiment 2:
(1) various raw-material weight numbers are as follows: (part/kg) in solder flux medicinal powder
(2) adhesive is high mould potassium-sodium water glass, and modulus 2.8-3.1, potassium sodium ratio are 3:1.
(3) submerged arc welding flux is made according to mentioned component to be detected, is provided according to national standard GB/T 12470-2003 standard,
Cooperate the proprietary flux-cored wire of resistance to sea atmosphere corrosion (the JQ.YJM500NH welding wire of Golden Bridge's independent research), carries out deposited metal
Learn constituent analysis, deposited metal Mechanics Performance Testing.Welding conditions: the source of welding current is DC reverse connection, thermal weld stress 18-
145-150 DEG C of temperature between 19KJ/cm, road.
1. solder type: activated rosin flux.
2. solder flux S/P content:
| Project | S | P |
| Guarantee value (%) | ≤0.035 | ≤0.040 |
| Example value (%) | 0.012 | 0.025 |
3. deposited metal composition
| Project | S | P | O | N |
| Guarantee value (%) | ≤0.015 | ≤0.025 | - | - |
| Example value (%) | 0.013 | 0.003 | 0.055 | 0.0042 |
4. deposited metal mechanical property measured value
| Mechanics project | Rm(N/mm2) | Rel(N/mm2) | A (%) | AKV(J)-40℃ |
| Standard value | ≥490 | ≥400 | ≥22.0 | ≥60 |
| Measured value | 565 | 450 | 26.5 | 82 |
5. buckling test: the curved curved equal qualification of back in face.
(4) welding wire (welding wire that Anshan iron and steel plant is smelted of the 1Ni series of the solder flux cooperation Anshan iron and steel plant production of the embodiment
JQ.MH500NH), the postwelding deposited metal coefficient of resistance to sea atmosphere corrosion V:
| Project | C | Si | Mn | P | S | Cu | Ni | Mo | Ti |
| Example value (%) | 0.044 | 0.021 | 1.01 | 0.012 | 0.004 | 0.49 | 1.6 | 0.26 | - |
V=1/ { (1.0-0.16 [C]) × (1.05-0.05 [Si]) × (1.04-0.016 [Mn])
×(1.0-0.5[P])×(1.0+1.9[S])×(1.0-0.10[Cu])
× (1.0-0.12 [Ni]) × (1.0-0.3 [Mo]) × (1.0-1.7 [Ti]) }=1.324
Embodiment 3:
(1) various raw-material weight numbers are as follows: (part/kg) in solder flux medicinal powder
(2) adhesive is high mould potassium-sodium water glass, and modulus 2.8-3.1, potassium sodium ratio are 3:1.
(3) submerged arc welding flux is made according to mentioned component to be detected, is provided according to national standard GB/T 12470-2003 standard,
Cooperate the proprietary flux-cored wire of resistance to sea atmosphere corrosion (the JQ.YJM500NH welding wire of Golden Bridge's independent research), carries out deposited metal
Learn constituent analysis, deposited metal Mechanics Performance Testing.Welding conditions: the source of welding current is DC reverse connection, thermal weld stress 18-
145-150 DEG C of temperature between 19KJ/cm, road.
1. solder type: activated rosin flux.
2. solder flux S/P content:
| Project | S | P |
| Guarantee value (%) | ≤0.035 | ≤0.040 |
| Example value (%) | 0.014 | 0.022 |
3. deposited metal composition
| Project | S | S | O | N |
| Guarantee value (%) | ≤0.015 | ≤0.015 | - | - |
| Example value (%) | 0.013 | 0.010 | 0.048 | 0.0040 |
4. deposited metal mechanical property measured value
| Mechanics project | Rm(N/mm2) | Rel(N/mm2) | A (%) | AKV(J)-60℃ |
| Standard value | ≥490 | ≥400 | ≥22.0 | ≥60 |
| Measured value | 575 | 470 | 26.5 | 85 |
5. buckling test: the curved curved equal qualification of back in face.
(4) welding wire (welding wire that Anshan iron and steel plant is smelted of the 1Ni series of the solder flux cooperation Anshan iron and steel plant production of the embodiment
JQ.MH500NH), the postwelding deposited metal coefficient of resistance to sea atmosphere corrosion V:
V=1/ { (1.0-0.16 [C]) × (1.05-0.05 [Si]) × (1.04-0.016 [Mn])
×(1.0-0.5[P])×(1.0+1.9[S])×(1.0-0.10[Cu])
× (1.0-0.12 [Ni]) × (1.0-0.3 [Mo]) × (1.0-1.7 [Ti]) }=1.312 to pass through above-mentioned welding real
It tests, verifies comprehensive performance of the invention, there is following result:
(1) solder flux of the present invention is dedicated sintered flux, can effectively be improved by alloy transfer into weld seam
The pure property of weld seam, the welding bead removability of slag guarantee weld seam comprehensive performance.
(2) solder flux of the present invention can satisfy large bridge submerged arc welding demand, have very high tensile strength and impact
Toughness and the coefficient of resistance to sea atmosphere corrosion.
Conclusion: the dedicated submerged arc welding flux of resistance to sea atmosphere corrosion of the invention, welding performance is excellent, and appearance of weld is beautiful,
Weld seam chemical component, mechanical property are able to satisfy the welding application of offshore long-span-bridge, it is ensured that welding quality.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of corrosion-proof and high-strength high-ductility submerged arc welding flux, it is characterised in that: the component including following parts by weight: acidic oxide 5-
11 parts, 48-61 parts of basic anhydride, 30-40 parts of fluoride, 0.1-0.5 parts of Yttrium base rare earth.
2. a kind of corrosion-proof and high-strength high-ductility submerged arc welding flux according to claim 1, it is characterised in that: the acidic oxide packet
Include 2~5 parts and 3~6 parts of titanium-type rutile of silicon mud.
3. a kind of corrosion-proof and high-strength high-ductility submerged arc welding flux according to claim 1, it is characterised in that: the basic anhydride packet
Include 18~22 parts of calcium oxide, 25~28 parts of fused magnesite, 1~5 part of barium monoxide, sodium and 4~6 parts of sylvite.
4. a kind of corrosion-proof and high-strength high-ductility submerged arc welding flux according to claim 3, it is characterised in that: the sodium and sylvite include
Potassium silicate and sodium metasilicate, wherein the addition mass ratio of potassium silicate and sodium metasilicate is 2:1.
5. a kind of corrosion-proof and high-strength high-ductility submerged arc welding flux according to claim 1, it is characterised in that: the fluoride is fluorination
30-40 parts of calcium.
6. a kind of corrosion-proof and high-strength high-ductility submerged arc welding flux according to claim 1, it is characterised in that: the solder flux medicinal powder particle
Granularity is 10-60 mesh.
7. a kind of corrosion-proof and high-strength high-ductility submerged arc welding flux according to claim 1, it is characterised in that: matching used includes resistance to
Sea atmosphere corrosion welding wire, preferably the 1Ni welding wire of resistance to sea atmosphere corrosion.
8. a kind of corrosion-proof and high-strength high-ductility submerged arc welding flux according to claim 1, it is characterised in that: deposited metal meets resistance to sea
Foreign atmospheric corrosion coefficient V > 1.2；Wherein, the formula of V is
V=1/ { (1.0-0.16 [C]) × (1.05-0.05 [Si]) × (1.04-0.016 [Mn])
×(1.0-0.5[P])×(1.0+1.9[S])×(1.0-0.10[Cu])
×(1.0-0.12[Ni])×(1.0-0.3[Mo])×(1.0-1.7[Ti])}；Wherein [C], [Si], [Mn], [P],
[S], [Cu], [Ni], [Mo] and [Ti] respectively represents the deposited metal percentage composition of C, Si, Mn, P, S, Cu, Ni, Mo and Ti.
9. a kind of corrosion-proof and high-strength high-ductility submerged arc welding flux purposes according to claim 1-8, it is characterised in that: this is buried
Arc-welding agent is applied to the welding of the bridge of resistance to sea atmosphere corrosion 1Ni steel plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811631401.1A CN109664051B (en) | 2018-12-29 | 2018-12-29 | Corrosion-resistant high-strength high-toughness submerged arc welding flux and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811631401.1A CN109664051B (en) | 2018-12-29 | 2018-12-29 | Corrosion-resistant high-strength high-toughness submerged arc welding flux and application thereof |
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| CN109664051A true CN109664051A (en) | 2019-04-23 |
| CN109664051B CN109664051B (en) | 2021-08-24 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1040160A (en) * | 1988-08-12 | 1990-03-07 | 国家机械工业委员会哈尔滨焊接研究所36693 | A kind of high-basicity sintered flux |
| JP4447078B2 (en) * | 1998-08-10 | 2010-04-07 | 株式会社神戸製鋼所 | Ni-based alloy flux cored wire |
| CN102601544A (en) * | 2012-03-21 | 2012-07-25 | 宝鸡市宇生焊接材料有限公司 | High-alkalinity high-tenacity low-hydrogen agglomerated flux and preparation method thereof |
| CN103551761A (en) * | 2013-11-12 | 2014-02-05 | 中联重科股份有限公司 | Solder, use thereof and soldering method |
| CN108057964A (en) * | 2017-12-12 | 2018-05-22 | 北京金威焊材有限公司 | Ni-based filament sintered flux used for submerged arc welding |
-
2018
- 2018-12-29 CN CN201811631401.1A patent/CN109664051B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1040160A (en) * | 1988-08-12 | 1990-03-07 | 国家机械工业委员会哈尔滨焊接研究所36693 | A kind of high-basicity sintered flux |
| JP4447078B2 (en) * | 1998-08-10 | 2010-04-07 | 株式会社神戸製鋼所 | Ni-based alloy flux cored wire |
| CN102601544A (en) * | 2012-03-21 | 2012-07-25 | 宝鸡市宇生焊接材料有限公司 | High-alkalinity high-tenacity low-hydrogen agglomerated flux and preparation method thereof |
| CN103551761A (en) * | 2013-11-12 | 2014-02-05 | 中联重科股份有限公司 | Solder, use thereof and soldering method |
| CN108057964A (en) * | 2017-12-12 | 2018-05-22 | 北京金威焊材有限公司 | Ni-based filament sintered flux used for submerged arc welding |
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