CN106563891A - High-performance nickel base special welding wire - Google Patents
High-performance nickel base special welding wire Download PDFInfo
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- CN106563891A CN106563891A CN201510654536.XA CN201510654536A CN106563891A CN 106563891 A CN106563891 A CN 106563891A CN 201510654536 A CN201510654536 A CN 201510654536A CN 106563891 A CN106563891 A CN 106563891A
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- China
- Prior art keywords
- welding wire
- flux
- cored
- welding
- medicated core
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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
- B23K35/3033—Ni as the principal constituent
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
Disclosed is a high-performance nickel base special welding wire. The content of Ni in the welding wire is 50wt%-54wt%. The flux-cored chemical components ( accounting for the welding wire by weight) of the welding wire include 5.0%-9.0% of sinter fines, 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. The combination of the flux-cored chemical components accounts for 13.0%-15.5% of the weight of the welding wire. The flux-cored welding wire prepared by flux-cored power materials prepared and processed according to the formula of the invention can be welded under the protection of gases, and ship and ocean engineering application requirements can be met.
Description
Technical field
The present invention relates to a kind of Nickel-welding Material, is especially to be related to the supporting CO of Naval Architecture and Ocean Engineering steel alloy2Gas
Protect Ni-based flux-cored wire.
Background technology
The occasion of Naval Architecture and Ocean Engineering application Ni-Cr alloy steel is more, and its natural immersion current potential in the seawater is compared with C-Mn alloys
The B levels hull steel of system is high, such as continues using the CO of C-Mn alloy systems2Gas shielded flux cored wire is welded, weld metal electricity
Position 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, needing natural immersion current potential and Ni-Cr alloy steel in the weld seam sea water that flux-cored wire formed
Matching.On the other hand, when such flux-cored wire welds the B level hull steels of C-Mn alloy systems, due to the weld seam that formed
Current potential 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 equal in mother metal
In the case of even 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 steel2Gas is protected
Shield welding Ni-based flux-cored wire and preparation method thereof.
The Ni-based flux-cored wire that the medicated core powder that formula according to the present invention is prepared and processed makes, can be in CO2Gas shielded
Under the conditions of weld, 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：Meet the Naval Architecture and Ocean Engineering application Ni-Cr alloy steel supporting technology of respective intensities rank
Require.
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 CO2The Ni-based medicated core weldering of gas shield
Silk, 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 above accounts for welding wire weight：13.0～15.5%, the Ni contents in the welding wire are 50-54wt%.
Wherein, agglomerated powder is prepared and processed by following material：
1. agglomerated powder constitutes (weight, %)
TiO2：30～80, SiO2：8～15, MgO：1～7, fluoride MgF2The combination of+NaF is (in the composition,
MgF2≤ 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：Match somebody with somebody by above-mentioned formula and fully puddled after powder, then 900 DEG C of high temperature eliminating waters of Jing, sintering；Will sintering
Compound afterwards is crushed to standby after certain granules degree.
2) Al in slag of the above-mentioned medicated core formed in welding process2O3More than the 50% of composition weight is from medicated core formula institute
The Al and Fe of arrangement3O4And 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 the physics of slag
Performance 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 anti-gas porosity of raising 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
Technical requirement (CO can be reached2Gas shield)：
The nickel-base alloy bare welding filler metal of the present invention has the gas of resistance to activity, resistance to caustic medium, the formedness of reducing resistance acid medium corrosion
Can, and high with intensity, plasticity is good, can cold and hot deformation and machine-shaping and solderable, solve general rustless steel and other metals,
The insurmountable engineering etching problem of nonmetallic materials, is a kind of very important corrosion-resistant metal materials.Nickel-base alloy refer to
Nickel is base and to contain alloying element, and can in some media resistant to elevated temperatures alloy.
Specific embodiment
Embodiment：
The chemical composition of flux for flux-cored wire powder of the invention and processing technology requirement, make three batches of Ni-based flux-cored wires,
The steel band and the composition of medicated core powder that the three batches of welding wires are adopted is as shown in table 1.The mother metal of three batches of welding wire institutes welding and welding process are joined
Number is as shown in table 2.Mechanics Performance Testing and sea water natural immersion potential measurement are carried out to the deposited metal of gained after welding, has been surveyed
Test result is as shown in table 3.
The embodiment of table 1 --- Ni-based flux-cored wire steel band composition and medicated core composition (weight, %)
The embodiment of table 2 --- Ni-based flux-cored wire welding mother metal and welding condition
The embodiment of table 3 --- Ni-based flux-cored wire deposited metal performance
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 CO2The condition of gas shielded
Lower welding, 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：Meet the Naval Architecture and Ocean Engineering application Ni-Cr alloy steel supporting technology of respective intensities rank
Require.
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 nickel-based welding wire, the welding wire is flux-cored wire, it is characterised in that the Ni contents in the welding wire are 50-54wt%, the medicated core chemical composition of 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. welding 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. welding 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 welding wire according to claim 1, it is characterised in that including the preparation method of the agglomerated powder：Match somebody with somebody by above-mentioned formula and fully puddled after powder, then 905 DEG C of high temperature eliminating waters of Jing, sintering；Compound after sintering is crushed to standby after certain granules degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510654536.XA CN106563891A (en) | 2015-10-10 | 2015-10-10 | High-performance nickel base special welding wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510654536.XA CN106563891A (en) | 2015-10-10 | 2015-10-10 | High-performance nickel base special welding wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106563891A true CN106563891A (en) | 2017-04-19 |
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ID=58507495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510654536.XA Withdrawn CN106563891A (en) | 2015-10-10 | 2015-10-10 | High-performance nickel base special welding wire |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109604862A (en) * | 2018-12-30 | 2019-04-12 | 柳州凯通新材料科技有限公司 | Highly wear-resisting alloy steel welding wire medicine core |
-
2015
- 2015-10-10 CN CN201510654536.XA patent/CN106563891A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109604862A (en) * | 2018-12-30 | 2019-04-12 | 柳州凯通新材料科技有限公司 | Highly wear-resisting alloy steel welding wire medicine core |
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Application publication date: 20170419 |
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| WW01 | Invention patent application withdrawn after publication |