CN108067763A - Nickel-based welding wire - Google Patents
Nickel-based welding wire Download PDFInfo
- Publication number
- CN108067763A CN108067763A CN201611004052.1A CN201611004052A CN108067763A CN 108067763 A CN108067763 A CN 108067763A CN 201611004052 A CN201611004052 A CN 201611004052A CN 108067763 A CN108067763 A CN 108067763A
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- welding
- nickel
- welding wire
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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
-
- 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
- B23K35/304—Ni as the principal constituent with Cr as the next major constituent
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The present invention relates to a kind of nickel-based welding wires, and by weight percentage, chemical composition is：C 0.02 0.09%, Cr 18 22%, Mo 7 ~ 11%, Co 11 14%, Ta 0.05 0.2%, Nb 0.2 0.4%, Al 0.7 1.2%, Ti 1.5 ~ 2.5%, surplus are Ni and impurity element；Using 70 90A, 10 12V of voltage, 1.5 1.8mm/s of speed of welding has obtained TIG weld connector, more than the fatigue fracture time under conditions of 800 DEG C and 140MPa is when 900 is small.
Description
Technical field
The present invention relates to a kind of nickel-based welding wires, belong to technical field of welding materials, more particularly to one kind for a new generation
The steam turbine component repair by welding welding wire of 700 DEG C of high-temperature service environments.
Background technology
To improve efficiency of combustion, ignition temperature is increased to 700 DEG C by steam turbine generator group, this is to steam turbine
Structure and its manufacture and repair propose severe challenge.
Due to needing to bear high temperature, vapor wheel unit uses nickel-base alloy more.Using the method for integral forging molding
Component is of high cost, efficiency is low manufacturing, therefore has to using welding processing.
Alloy 617 (Ni-0.05C-22Cr-9Mo-12Co-0.9Al-0.5Ti-0.001B) is widely used welding wire,
It is versatile, but protracted fatigue performance is relatively low.For example, under conditions of 800 DEG C and 140MPa, fatigue fracture time about 350-
400 it is small when, when this is small with base material 900 more than differ larger.
Using the welding wire with the equal ingredient of base material, solderability is poor, also easily generates weld crack in addition.
The content of the invention
It is an object of the invention to provide the nickel-based welding wire that a kind of fatigue behaviour is more excellent, so as to improve anti-700 DEG C of height
The lasting fatigue at high temperature ability of warm steam turbine component.
For achieving the above object, the present invention adopts the following technical scheme that：
A kind of nickel-based welding wire, by weight percentage, chemical composition is：C 0.02-0.09%, Cr 18-22%, Mo 7
~11%, Co 11-14%, Ta 0.05-0.2%, Nb 0.2-0.4%, Al 0.7-1.2%, Ti 1.5~2.5%, surplus
For Ni and impurity element.
A kind of nickel-based welding wire, by weight percentage, chemical composition is：C 0.03-0.07%, Cr 19-21%, Mo 8
~10%, Co 11.5-13.5%, Ta 0.07-0.15%, Nb 0.25-0.35%, Al 0.85-1.1%, Ti 1.75~
2.2%, surplus is Ni and impurity element.
Nickel-based welding wire by weight percentage, also contains Hf0.05-0.5%.
Using 70-90A, voltage 10-12V, speed of welding 1.5-1.8mm/s has obtained TIG weld connector, at 800 DEG C
With the fatigue fracture time under conditions of 140MPa when 900 is small more than.
The technology of welding wire chemical composition is described as follows：
C：It is mainly used for Carbonitride Precipitation reinforcing, to improve the elevated temperature strength of weld metal.When its content is less than
0.02%, effect unobvious；When its content is more than 0.09%, it can so that precipitation size is coarse, it is strong to be unfavorable for high temperature greatly
Degree and fatigue behaviour.It is therefore preferable that its ingredient is 0.02-0.09%.
When its content is in 0.03-0.07%, effect is more preferable.
Cr：On the one hand it is used to improve resistance to high temperature oxidation and resistance to corrosion, it will usually form oxide skin(coating) on surface；It is another
Aspect is for improving intensity.When its content is less than 18%, effect unobvious；When its content is more than 22%, weldering can be increased
Crack sensitivity is connect, while can also reduce the solid solubility temperature of the carbonitride in material, so as to reduce elevated temperature strength.Therefore, it is excellent
It is 18-22% to select its ingredient.
When its content is in 19-21%, effect is more preferable.
Mo：On the one hand it is that elevated temperature strength is improved by solution strengthening, is on the other hand the height that can effectively reduce Al, Ti and Cr
Warm diffusion velocity strengthens atomic binding forces, the softening rate of material is reduced, so as to improve elevated temperature strength.When its content is less than 7%
When, elevated temperature strength strengthens effect unobvious；It when content was more than 11%, can reduce wilful and moulding, be unfavorable for comprehensive performance
It improves.Therefore preferred content is 7~11%.
When its content is in 8-10%, effect is more preferable.
Co：On the one hand it is by reducing the solid solubility of Ti and Al in the base, strengthens so as to enhance Carbonitride Precipitation, from
And improve intensity；Precipitation of the carbide on crystal boundary can be also reduced simultaneously, to reduce the width of crystal boundary Cr-depleted region, so as to improve height
Warm intensity and its its stability；On the other hand it is that can improve the toughness of weld metal and moulding, for reducing crack sensitivity
It is helpful.When its content is less than 11%, effect unobvious；When its content is more than 14%, on the one hand increase cost, the opposing party
Face rings welding technological properties.Therefore preferably its content range is 11~14%.
When its content is in 11.5-13.5%, effect is more preferable.
Ta：On the one hand expand the solidification temperature range of weld metal, reduce solidus temperature, it is micro- so as to refine weld metal
Tissue is seen, improves high-temperature behavior；On the other hand it is the solidified structure that weld metal is further refined by changing crystal boundary attribute,
And interdendritic is reduced away from while weld metal intensity is improved, also reducing welding cold crack sensitivity.When its content is less than
When 0.05%, effect unobvious；When its content is more than 0.2%, the size and ratio of γ and γ ' can be changed, so as to influence
Elevated temperature strength.Therefore preferred its ingredient 0.05~0.2%.In addition, micro Ta addition can further improve Mo consolidating in the base
Molten and segregation, further improves and promotes precipitation hardened effect.
When its content is in 0.07-0.15%, effect is more preferable.
Nb：On the one hand it is to strengthen the precipitation of precipitated phase using its segregation grain boundary features, and improves its stability；The opposing party
Face is to enter γ ' phases, and improves its stability, so as to improve the high-temperature stability of weld metal.When its content is less than 0.2%
When, strengthen effect unobvious；When its content is more than 0.4%, weld metal can be reduced in the moulding of hot stage, so as to increase
Crack sensitivity under high-temperature situation.Therefore preferably its content is 0.2~0.4%.
When its content is in 0.25-0.35%, effect is more preferable.
Al：It is that γ ' mutually primarily forms element, influences the solid solubility temperature and volume fraction of the phase, and then influence elevated temperature strength.
When its content is less than 0.7%, effect unobvious；When its content is more than 1.2%, welding technological properties is influenced.Therefore preferably
Its content is 0.7~1.2%.
When its content is in 0.85-1.1%, effect is more preferable.
Ti：Be one of important element in the present invention, be that γ ' mutually primarily forms element, influence the phase solid solubility temperature and
Volume fraction, and then influence elevated temperature strength.When its content is less than 1.8%, effect unobvious；When its content is more than 2.5%,
It, which strengthens effect, tends to be slow, and is limited by Al and Hf contents and the ratio between them.Therefore preferably its content is 1.5
~2.5%.
When its content is in 1.75-2.2%, effect is more preferable.
When between Ti/Al=2.0-2.1, the reinforcing effect of Ti and Al Resistance of Weld Metal is best.
Hf：It is one of important element in the present invention, there is refinement γ and γ ' phases, and improve stability, therefore can strengthens
Weld metal.When its content is less than 0.05%, effect unobvious；When its content is more than 0.5%, the strong of Ti and Al can be influenced
Change effect.Therefore preferably its content is 0.05~0.5%.
When its content is in 0.1-0.3%, effect is more preferable.
When between Ti/Hf=8-15, Hf is best with the reinforcing effect of Ti and Al.
Requirement also is made to the welding parameter of argon tungsten-arc welding in the present invention, using 70-90A, voltage 10-12V, welding speed
Degree 1.5-1.8mm/s has obtained TIG weld connector, and the fatigue fracture time under conditions of 800 DEG C and 140MPa is small 900
When more than.
Advantages of the present invention and advantageous effect：
1. the present invention is designed by using Ti-Ta-Hf alloys, and optimizes Ti, the content range and ratio of Al and Hf, can incite somebody to action
The fatigue fracture service life of welding point from 400 before it is small when be increased to 900 it is small when more than, notable one times of service life or more.
2. weld crack of the welding wire of the present invention during welding is less than the prior art, i.e., processing performance is due to existing skill
Art, the alternative prior art are widely used in the Nickel-based Alloy Weldings of 700 DEG C of high-temperature service occasions.
Specific embodiment
Technical scheme is further described below in conjunction with preferred embodiment.
By standardization program make welding wire, specification between 1.2-3.2mm, can be solid core welding wire or flux-cored wire,
Ingredient is as shown in table 1.
Test piece for welding thickness is the steam-electric power component material of anti-700 DEG C of high temperature between 2-50mm.
Carry out tungsten grade argon arc welding, joint form has docking, T-shaped, and welding parameter is shown in Table 2.
Welding Testing the results are shown in Table 3.
Embodiment 1-2：
Test piece for welding 6mm is thick, and joint form is T-shaped.
Using specification 1.6mm solid core welding wires.
Postwelding is examined, and does not find defect.
Embodiment 3-4：
Test piece for welding 28mm is thick, using 55 ° of grooves of V-type.
Using specification 1.6mm solid core welding wires.
Postwelding is examined, and does not find defect.
Embodiment 5-6：
Test piece for welding 46mm is thick, using double V-shaped 50 ° of grooves.
Using specification 1.6mm solid core welding wires.
Postwelding is examined, and does not find defect.
Embodiment 7-8：
Test piece for welding 16mm is thick, using 50 ° of grooves of V-type.
Using specification 1.6mm solid core welding wires.
Postwelding is examined, and does not find defect.
Comparative example 1-2：
Test piece for welding 6mm is thick, and joint form is T-shaped.
Using specification 1.6mm solid core welding wires.
Postwelding is examined, and does not find defect.
Comparative example 3-4：
Test piece for welding 28mm is thick, using 55 ° of grooves of V-type.
Using specification 1.6mm solid core welding wires.
Postwelding is examined, and does not find defect.
By above-described embodiment, it is tired to possess excellent high temperature for 700 DEG C of high-temperature steam component nickel-based welding wires of the invention
Labor performance and excellent processing performance.It can be widely applied to Power station structure.
Embodiment described above only expresses the specific embodiment of the present invention, but can not be therefore understands that for the present invention
The limitation of the scope of the claims.Any variation that those skilled in the art is the present invention under the enlightenment of present inventive concept falls
Within the scope of the present invention.
1 embodiment chemical composition (wt.%) of table
2 embodiment welding procedure of table
3 embodiment the performance test results of table
Claims (4)
1. a kind of nickel-based welding wire, which is characterized in that by weight percentage, chemical composition is：C 0.02-0.09%, Cr 18-
22%, Mo 7 ~ 11%, Co 11-14%, Ta 0.05-0.2%, Nb 0.2-0.4%, Al 0.7-1.2%, Ti 1.5 ~ 2.5%, surplus
For Ni and impurity element.
2. a kind of nickel-based welding wire, which is characterized in that by weight percentage, chemical composition is：C 0.03-0.07%, Cr 19-
21%, Mo 8 ~ 10%, Co 11.5-13.5%, Ta 0.07-0.15%, Nb 0.25-0.35%, Al 0.85-1.1%, Ti 1.75 ~
2.2%, and Ti/Al=2.0-2.1, surplus are Ni and impurity element.
3. according to the nickel-based welding wire described in claim 1-2, which is characterized in that by weight percentage, also containing Hf 0.05-
0.5%, and Ti/Hf=8-15.
4. according to the nickel-based welding wire described in claim 1-3, which is characterized in that using 70-90A, voltage 10-12V, welding speed
Degree 1.5-1.8mm/s has obtained TIG weld connector, and the fatigue fracture time under conditions of 800 DEG C and 140MPa is small 900
When more than.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611004052.1A CN108067763A (en) | 2016-11-15 | 2016-11-15 | Nickel-based welding wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611004052.1A CN108067763A (en) | 2016-11-15 | 2016-11-15 | Nickel-based welding wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108067763A true CN108067763A (en) | 2018-05-25 |
Family
ID=62162793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611004052.1A Withdrawn CN108067763A (en) | 2016-11-15 | 2016-11-15 | Nickel-based welding wire |
Country Status (1)
| Country | Link |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110977245A (en) * | 2019-12-31 | 2020-04-10 | 江苏新华合金有限公司 | Nickel-chromium-molybdenum alloy welding wire for ball valve surfacing and process preparation method thereof |
| CN111318835A (en) * | 2020-04-03 | 2020-06-23 | 中国科学院金属研究所 | Nickel-based alloy welding wire for high-temperature alloy fusion welding and preparation method and application thereof |
| CN112570926A (en) * | 2020-11-27 | 2021-03-30 | 上海五钢设备工程有限公司 | Welding wire for surfacing welding of precision forging machine hammerhead and surfacing welding method of precision forging machine hammerhead |
| CN113492278A (en) * | 2021-05-25 | 2021-10-12 | 江苏新恒基特种装备股份有限公司 | Nickel-based chromium-nickel-cobalt superalloy argon arc welding wire for additive manufacturing and preparation method thereof |
| CN119237985A (en) * | 2024-12-09 | 2025-01-03 | 东方电气集团东方汽轮机有限公司 | A flux-cored welding wire for repairing Mar-M247 defects and a preparation method and use method thereof |
-
2016
- 2016-11-15 CN CN201611004052.1A patent/CN108067763A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110977245A (en) * | 2019-12-31 | 2020-04-10 | 江苏新华合金有限公司 | Nickel-chromium-molybdenum alloy welding wire for ball valve surfacing and process preparation method thereof |
| CN110977245B (en) * | 2019-12-31 | 2022-03-04 | 江苏新华合金有限公司 | Process preparation method of nickel-chromium-molybdenum alloy welding wire for ball valve surfacing |
| CN111318835A (en) * | 2020-04-03 | 2020-06-23 | 中国科学院金属研究所 | Nickel-based alloy welding wire for high-temperature alloy fusion welding and preparation method and application thereof |
| CN112570926A (en) * | 2020-11-27 | 2021-03-30 | 上海五钢设备工程有限公司 | Welding wire for surfacing welding of precision forging machine hammerhead and surfacing welding method of precision forging machine hammerhead |
| CN112570926B (en) * | 2020-11-27 | 2022-08-02 | 上海五钢设备工程有限公司 | Welding wire for surfacing welding of precision forging machine hammerhead and surfacing welding method of precision forging machine hammerhead |
| CN113492278A (en) * | 2021-05-25 | 2021-10-12 | 江苏新恒基特种装备股份有限公司 | Nickel-based chromium-nickel-cobalt superalloy argon arc welding wire for additive manufacturing and preparation method thereof |
| CN119237985A (en) * | 2024-12-09 | 2025-01-03 | 东方电气集团东方汽轮机有限公司 | A flux-cored welding wire for repairing Mar-M247 defects and a preparation method and use method thereof |
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180525 |