CN106514059A - Preparation method of welding wire for shipping and ocean engineering alloy steel supporting welding - Google Patents
Preparation method of welding wire for shipping and ocean engineering alloy steel supporting welding Download PDFInfo
- Publication number
- CN106514059A CN106514059A CN201510582117.XA CN201510582117A CN106514059A CN 106514059 A CN106514059 A CN 106514059A CN 201510582117 A CN201510582117 A CN 201510582117A CN 106514059 A CN106514059 A CN 106514059A
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- Prior art keywords
- welding
- preparation
- welding wire
- flux
- ocean engineering
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Classifications
-
- 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
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes, wires
- B23K35/0266—Rods, electrodes, wires flux-cored
-
- 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
- B23K35/3601—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 with inorganic compounds as principal constituents
- B23K35/3608—Titania or titanates
-
- 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
- B23K35/368—Selection of non-metallic compositions of core materials either alone or conjoint with selection of soldering or welding materials
-
- 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
- B23K35/40—Making wire or rods for soldering or welding
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention provides a preparation method of a welding wire for shipping and ocean engineering alloy steel supporting welding. A flux core of the welding wire comprises, by weight of the welding wire, 5.0-9.0% of sintering powder, 0.21-0.7% of Fe3O4, 0.15-1.0% of TiO2, 0.15-0.5% of Al, 0-0.4% of Ti, 0.1-0.5% of Si, 2.0-3.5% of Mn, 0-0.4% of Mo, 0.5-1.1% of Ni, 0.1-0.4% of Cr, 0-0.3% of Cu and 1.10-2.0% of Fe; and a combination of the chemical components of the flux core accounts for 13.0-15.5% by weight of the welding wire. The flux core welding wire made of flux core powder materials prepared and processed according to a formula provided by the invention can be used for welding in the condition of CO2 gas protection, and the related technical demand of Ni-Cr alloy welding applied to shipping and ocean engineering is met.
Description
Technical field
The present invention relates to a kind of welding material, is especially to be related to the supporting CO of Naval Architecture and Ocean Engineering steel alloy2Gas shielded flux cored wire.
Background technology
In recent years, in shipbuilding field, extensively using the CO of C-Mn alloy systems2Gas shielded flux cored wire is carried out automatically and semi-automatic welding, and its welding object is mainly the B level hull steels of C-Mn alloy systems, though both natural immersion current potentials in the seawater are relatively low, are so more or less the same, will not be formed galvanic corrosion.
And the occasion of Naval Architecture and Ocean Engineering application Ni-Cr alloy steel is more, its natural immersion current potential in the seawater is high compared with the B levels hull steel of C-Mn alloy systems, such as continues the CO using C-Mn alloy systems2Gas shielded flux cored wire is welded, and weld metal current potential is low compared with Ni-Cr alloy, and its result is to form the corrosion galvanic couple that mother metal is big negative electrode, weld seam is primary anode in the seawater, certainly will accelerate the corrosion of weld seam.In consideration of it, natural immersion current potential is matched with Ni-Cr alloy steel in needing the weld seam sea water formed by flux-cored wire.On the other hand; when such flux-cored wire welds the B level hull steels of C-Mn alloy systems; due to the current potential of the weld seam for being formed it is higher than mother metal; its result be in the seawater formed mother metal be big anode, the joint that weld seam is little negative electrode; become in the case of mother metal homogeneous corrosion, the favourable situation that weld seam is protected.
The content of the invention
It is an object of the invention to provide corrosive nature supporting CO for Naval Architecture and Ocean Engineering application Ni-Cr alloy steel2The preparation method of gas shielded welding flux-cored wire.
The flux-cored wire that the medicated core powder that formula according to the present invention is prepared and processed makes, can be in CO2Weld under conditions of gas shielded, and meet the following technical requirements of Naval Architecture and Ocean Engineering application Ni-Cr alloy welding：
1. deposited metal composition (wt%)
| C | Mn | Si | S | P | Cr | Ni | Cu |
| ≤0.06 | ≥0.80 | ≤0.50 | ≤0.025 | ≤0.025 | ≥0.20 | ≥0.80 | 0～0.5 |
2. deposited metal sea water natural immersion current potential：>=-710mV (with respect to calomel electrode)；
3. deposited metal mechanical property：The Naval Architecture and Ocean Engineering application Ni-Cr alloy steel supporting technology for meeting respective intensities rank is required.
Such as in the case where the 3y levels of CCS (CCS) are required, deposited metal mechanical performance index is as follows：
| Yield strength Rel, MPa | Tensile strength Rm, MPa | A, % | Akv, J (- 20 DEG C) |
| ≥400 | ≥480 | ≥22 | ≥47 |
According to considerations above, the present invention provides a kind of Naval Architecture and Ocean Engineering steel alloy supporting CO2Gas shielded flux cored wire, wherein：
1) medicated core slag system adopts titanium-fluoro- aluminum reaction in-situ slag system, the medicated core chemical composition (accounting for welding wire weight %) of the welding wire to include：
Agglomerated powder：4.5～9.0,
Fe3O4：0.21～0.7,
TiO2：0.15～1.0,
Al：0.15～0.5,
Ti：0～0.4,
Si：0.1～0.5,
Mn：2.0～3.5,
Mo：0～0.4,
Ni：0.5～1.1,
Cr：0.1～0.4,
Cu：0～0.3,
Fe：1.0～2.0,
The combination of each medicated core chemical composition accounts for welding wire weight above：13.0～15.5%.
Wherein, agglomerated powder is prepared and is processed by following material：
1. agglomerated powder constitutes (weight, %)
TiO2：30～80, SiO2：8～15, MgO：1～7, fluoride MgF2Combination (in the composition, the MgF of+NaF2≤ 40%)：1～7, ZrO2：1～7, Al2O3：2～10, K2O+Na2Combination (in the composition, the K of O2O≤40wt%)：0～5.
2. the preparation of agglomerated powder：Fully puddle after matching somebody with somebody powder by above-mentioned formula, then 900 DEG C of high temperature eliminating waters, sintering of Jing；Compound after sintering is crushed to standby after certain granules degree.
2) Al in slag of the above-mentioned medicated core formed in welding process2O3Al and Fe that more than the 50% of composition weight is arranged from medicated core formula3O4And CO2Deng the reaction in-situ product of oxidant.
In above-mentioned medicated core powder (containing agglomerated powder) constituent, the Main Function of each component is as follows：
(1) Main Function of Ni, Cr, Cu is to improve natural immersion current potential in weld seam sea water.
(2) Al and Fe3O4Deng reaction, thus bringing addition reaction heat to improve arc performance and product improves physical property of slag etc. (one of titanium-fluoro- aluminum reaction in-situ slag system feature).
(3)TiO2Play slag making and stabilising arc etc..
(4)K2O、Na2O acts primarily as effect of stabilising arc etc..
(5) Main Function of fluoride is to improve anti-gas porosity of welding wire etc..
(6)K2O、Na2O and fluoride also play agglutinant.
(7) MgO maintains the certain basicity of slag together with fluoride, so that weld metal obtains enough toughness.
(8)SiO2、Al2O3、ZrO2Deng effect be slag making and the performance for improving slag is acted on etc..
(9) Main Function of Ti, Si, Mn is deoxidation and alloying weld metal, and the Main Function of Mo (also Ni) is reinforcing and toughening weld metal etc..
What flux-cored wire of the present invention reached has the technical effect that：The deposited metal mechanical property of the flux-cored wire produced by above-mentioned technology reaches technical requirement (CO2Gas shield)：
Specific embodiment
Embodiment：
The chemical composition of flux for flux-cored wire powder of the invention and processing technology require, makes the supporting flux-cored wire of the three batches of 10CrSiNiCu steel, and the steel band and the composition of medicated core powder adopted by the three batches of welding wires is as shown in table 1.The mother metal of three batches of welding wire institutes welding and welding process parameter are as shown in table 2.Mechanics Performance Testing and sea water natural immersion potential measurement is carried out after welding to the deposited metal of gained, test result is as shown in table 3.
1 embodiment 10CrSiNiCu steel flux-cored wire steel band composition of table and medicated core composition (weight, %)
2 embodiment 10CrSiNiCu steel flux-cored wire welding mother metal of table and welding condition
3 embodiment 10CrSiNiCu steel flux-cored wire deposited metal performance of table
Note：Charpy-V impact power is the meansigma methodss of five samples.
The flux-cored wire that the medicated core powder that the formula of the various embodiments described above is prepared and processed makes, can be in CO2Weld under conditions of gas shielded, and meet the following technical requirements of Naval Architecture and Ocean Engineering application Ni-Cr alloy welding：
1. deposited metal composition (wt%)
| C | Mn | Si | S | P | Cr | Ni | Cu |
| ≤0.06 | ≥0.80 | ≤0.50 | ≤0.025 | ≤0.025 | ≥0.20 | ≥0.80 | 0～0.5 |
2. deposited metal sea water natural immersion current potential：>=-710mV (with respect to calomel electrode)；
3. deposited metal mechanical property：The Naval Architecture and Ocean Engineering application Ni-Cr alloy steel supporting technology for meeting respective intensities rank is required.
Such as in the case where the 3y levels of CCS (CCS) are required, deposited metal mechanical performance index is as follows：
| Rel, MPa | Rm, MPa | A, % | Akv, J (- 20 DEG C) |
| ≥400 | ≥480 | ≥22 | ≥47 |
Claims (4)
1. a kind of preparation method of flux-cored wire, it is characterised in that the medicated core chemical composition of the welding wire（Account for the wt% of welding wire）Including：
Agglomerated powder：5.0 ~ 9.0,
Fe3O4：0.21 ~ 0.7,
TiO2：0.15 ~ 1.0,
Al：0.15 ~ 0.5,
Ti：0 ~ 0.4,
Si：0.1 ~ 0.5,
Mn：2.0 ~ 3.5,
Mo：0 ~ 0.4,
Ni：0.5 ~ 1.1,
Cr：0.1 ~ 0.4,
Cu：0 ~ 0.3,
Fe：1.10~2.0.
2. the preparation method of flux-cored wire according to claim 1, it is characterised in that the combination of described each medicated core chemical composition accounts for welding wire weight：13.0~15.5%.
3. the preparation method of flux-cored wire according to claim 1, it is characterised in that the agglomerated powder includes following component（wt%）：
TiO2：30 ~ 80,
SiO2：8 ~ 15,
MgO：1 ~ 7,
MgF2+NaF：1 ~ 7,
ZrO2：1 ~ 7,
Al2O3：2 ~ 10,
K2O+Na2O：0~5.
4. the preparation method of flux-cored wire according to claim 1, it is characterised in that including the preparation method of the agglomerated powder：Fully puddle after matching somebody with somebody powder by above-mentioned formula, then 905 DEG C of high temperature eliminating waters, sintering of Jing；Compound after sintering is crushed to standby after certain granules degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510582117.XA CN106514059A (en) | 2015-09-14 | 2015-09-14 | Preparation method of welding wire for shipping and ocean engineering alloy steel supporting welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510582117.XA CN106514059A (en) | 2015-09-14 | 2015-09-14 | Preparation method of welding wire for shipping and ocean engineering alloy steel supporting welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106514059A true CN106514059A (en) | 2017-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510582117.XA Pending CN106514059A (en) | 2015-09-14 | 2015-09-14 | Preparation method of welding wire for shipping and ocean engineering alloy steel supporting welding |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1223922A (en) * | 1999-01-12 | 1999-07-28 | 冶金工业部钢铁研究总院 | Gas shield cored electrode for high ductility all position welding |
| CN101745755A (en) * | 2009-12-29 | 2010-06-23 | 武汉铁锚焊接材料股份有限公司 | Flux cored wire for gas shielded welding of weathering steel |
| CN102233498A (en) * | 2010-04-21 | 2011-11-09 | 广东福维德焊接股份有限公司 | CO2 gas protection flux-cored wire for matching welding of low-alloy steel with strength of 490 MPa |
| CN102233497A (en) * | 2010-04-21 | 2011-11-09 | 广东福维德焊接股份有限公司 | CO2 gas shielded flux cored wire for supporting welding of low alloy steel with strength of 590 MPa |
-
2015
- 2015-09-14 CN CN201510582117.XA patent/CN106514059A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1223922A (en) * | 1999-01-12 | 1999-07-28 | 冶金工业部钢铁研究总院 | Gas shield cored electrode for high ductility all position welding |
| CN101745755A (en) * | 2009-12-29 | 2010-06-23 | 武汉铁锚焊接材料股份有限公司 | Flux cored wire for gas shielded welding of weathering steel |
| CN102233498A (en) * | 2010-04-21 | 2011-11-09 | 广东福维德焊接股份有限公司 | CO2 gas protection flux-cored wire for matching welding of low-alloy steel with strength of 490 MPa |
| CN102233497A (en) * | 2010-04-21 | 2011-11-09 | 广东福维德焊接股份有限公司 | CO2 gas shielded flux cored wire for supporting welding of low alloy steel with strength of 590 MPa |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20170417 Address after: 212000 Danyang City, Zhenjiang, Lu Lu town Canal West Applicant after: Jiangsu Lixin Alloy Industry General Corp. Address before: 213000 Danyang City, Jiangsu Province Lu town Aerospace Industrial Park Applicant before: Jiangsu Lixin Welding Material Co., Ltd. |
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Application publication date: 20170322 |
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