CN106425157A - TIG welding wire of steel for steam temperature ultra supercritical thermal power generating unit and preparation method thereof - Google Patents
TIG welding wire of steel for steam temperature ultra supercritical thermal power generating unit and preparation method thereof Download PDFInfo
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- CN106425157A CN106425157A CN201610961384.2A CN201610961384A CN106425157A CN 106425157 A CN106425157 A CN 106425157A CN 201610961384 A CN201610961384 A CN 201610961384A CN 106425157 A CN106425157 A CN 106425157A
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- steel
- welding wire
- thermal power
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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
- B23K35/3073—Fe as the principal constituent with Mn as next major constituent
-
- 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
- B23K35/404—Coated rods; Coated electrodes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a TIG welding wire of steel for a steam temperature ultra supercritical thermal power generating unit and a preparation method thereof. The TIG welding wire comprises, by mass, 0.08-0.12% of C, 0.60-1.00% of Mn, 0.50% of Si or less, 0.010% of S or less, 0.010% of P or less, 8.0-10.0% of Cr, 0.8% of Ni or less, 0.10% of Mo or less, 2.6-3.2% of Co, 2.5-3.2% of W, 0.15-0.30% of V, 0.02-0.10% of Nb, 0.005-0.015% of N, 0.002-0.010% of B, 0.70-1.10% of Cu, and the balance Fe and impurities. Compared with the prior art, the TIG welding wire of the steel for the steam temperature ultra supercritical thermal power generating unit conducts welding on G115 steel, and weld metal has intensity, toughness and high-temperature performance which are similar to those of the G115 steel.
Description
Technical field
The present invention relates to field of welding material, more particularly to a kind of TIG of Steel for steam-temperature ultra-supercritical thermal power unit
Welding wire and its production method.
Background technology
In world wide, the steam parameter of main ultra supercritical coal-fired unit is 600 DEG C at present, and China was from Zhejiang in 1996
Since 600 DEG C of ultra supercritical coal-fired unit of Yuhuan First put into operation, nearly hundred 600 DEG C of ultra supercritical thermal motors have successively been built up
Group.For reducing coal consumption further, improving the thermal efficiency and reducing discharge, it is to reduce coal consumption further, improve the thermal efficiency and reduce row
Put, China starts 700 DEG C of steam parameter ultra supercritical coal-fired unit for 2010 and develops state plan.
Heat proof material is to restrict the main bottleneck problem that fired power generating unit develops to high parameter, and heavy caliber boiler tube and collection
Case is then " bottleneck problem in bottleneck ".Vapor (steam) temperature in 700 DEG C of steam parameter ultra supercritical coal-fired unit boilers be from 600
DEG C 700 DEG C are progressively warmed up to, each Crucial temperature phase is required to meet candidate's heat proof material of use requirement.According to current
Result of study, martensite heat-resistant steel P92 can be used for the heavy caliber boiler tube manufacture of below 620 DEG C of vapor (steam) temperatures part, nickel base heat resistant
Alloy CCA617 can be used for 650-700 DEG C of vapor (steam) temperature section heavy caliber boiler tube manufacture.Thermal conductivity due to austenitic heat-resistance steel
Low, thermal coefficient of expansion is big, is not suitable for manufacturing the heavy caliber boiler tube of high parameter ultra supercritical coal-fired unit.
The support Department of Science and Technology 973 plans " the structure stability basic research of high temperature resistant martensite steel " problem and 863 Program is " first
Enter ultra supercritical coal-fired unit key boiler tube exploitation " project, G115 steel developed jointly by Iron and Steel Research Geueral Inst and Baosteel.
G115 steel belongs to the one kind in supercritical steel, and it 9Cr-3W-3Co, is a kind of martensite steel that composition characteristic is.With biography
The T/P92 steel of system is compared, with higher use temperature and allowable stress, with wide in 650 DEG C of vapor (steam) temperature boilers
Application prospect.
But the welding material for matching with the steel can not be found.
Content of the invention
An object of the present invention is that the TIG weldering weldering for providing a kind of Steel for steam-temperature ultra-supercritical thermal power unit
Silk, the welding wire can be exclusively used in the welding of 650 DEG C of vapor (steam) temperature boiler steels.
Technical scheme is：A kind of TIG welding wire of Steel for steam-temperature ultra-supercritical thermal power unit, the Quality of Final Welding Wire percentage
Content is as follows：C 0.08-0.12、Mn 0.60-1.00、0〈Si≤0.50、0〈S≤0.010、0〈P≤0.010、Cr 8.0-
10.0、0〈Ni≤0.80、0〈Mo≤0.10、Co 2.6-3.2、W 2.5-3.2、V 0.15-0.30、Nb 0.02-0.10、N
0.005-0.015, B 0.002-0.010, Cu 0.70-1.10, balance of Fe and impurity.
Preferably, the C 0.081-0.096, Mn 0.60-1.00, Si 0.35-0.43,0 ＜ S≤0.010,0 ＜ P≤
0.010、Cr 8.20-9.43、Ni 0.50-0.60、0〈Mo≤0.10、Co 2.72-2.88、W 2.63-2.75、V 0.18-
0.19th, Nb 0.03-0.09, N 0.008-0.012, B 0.002-0.010, Cu 0.70-1.10, balance of Fe and impurity.
Preferably, the C 0.085, Mn 0.70, Si 0.35, S 0.005, P 0.007, Cr 8.20, Ni 0.60,
Mo 0.001、Co 2.80、W 2.75、V 0.19、Nb 0.04、N 0.010、B 0.002、Cu 0.85.
Preferably, the C 0.096, Mn 0.70, Si 0.43, S 0.005, P 0.007, Cr 8.90, Ni 0.50,
Mo 0.001、Co 2.72、W 2.63、V 0.19、Nb 0.03、N 0.012、B 0.002、Cu 0.85.
Preferably, the C 0.079, Mn 0.70, Si 0.37, S 0.005, P 0.007, Cr 9.43, Ni 0.55,
Mo 0.001、Co 2.88、W 2.73、V 0.18、Nb 0.06、N 0.008、B 0.002、Cu 0.85.
The second object of the present invention is to provide a kind of TIG welding wire of Steel for steam-temperature ultra-supercritical thermal power unit
Preparation method.
Technical scheme is：A kind of preparation method of the TIG welding wire of Steel for steam-temperature ultra-supercritical thermal power unit, including
Following steps：
1. smelt in vaccum sensitive stove according to conventional gas protection welding wire smelting process；
2. wire rod is made, through drawing, heat treatment, is drawn to diameter of phi 2.4mm；
3. cleaning, copper facing, bundling obtain welding wire.
Beneficial effect：
The defect for existing welding wire of the present invention, with the addition of austenizer Co, while creep strength is improved
The formation of delta ferrite can also be suppressed, delay martensite steel belt roof bolt to recover, promote the forming core of fine second carbide in tempering
And delay growing up for carbide；Reduce Mo by adding W, and add B, Cu to improve the creep strength of steel further, can reduce
Ms (martensite start) point Ms of structure of steel, reduces coefficient of thermal expansion, thus can more stable and reinforcing martensitic structure.
The present invention is welded on G115 steel, and weld metal has the intensity close with G115 steel, toughness and high temperatures
Energy.
Specific embodiment
With reference to specific embodiment, the present invention is further illustrated.
Embodiment 1
Component of weld wire is by mass percentage：C 0.085、Mn 0.70、Si 0.35、S 0.005、P 0.007、Cr
8.20th, Ni 0.60, Mo 0.001, Co 2.80, W 2.75, V 0.19, Nb 0.04, N 0.010, B 0.002, Cu 0.85,
Balance of Fe and impurity) carry out TIG weld test (weld diameter is the G115 steel plate that Φ 73mm, wall thickness is respectively 11mm).Weldering
Connect processing performance excellent, appearance of weld is attractive in appearance, weld edge is regular, no the weld defect such as undercut, pore, crackle.
1 deposited metal mechanical property of table
2 deposited metal drawing by high temperature data of table
3 deposited metal short time high temperature of table stretches data
Embodiment 2
The solder flux of embodiment 1 is coordinated welding wire, and (component of weld wire is by mass percentage：C 0.0 96、Mn 0.70、Si
0.43、S 0.005、P 0.007、Cr 8.90、Ni 0.50、Mo 0.001、Co 2.72、W 2.63、V 0.19、Nb 0.04、N
0.012nd, B 0.002, Cu 0.85, balance of Fe and impurity) (weld diameter is that Φ 73mm, wall thickness divides to carry out TIG weld test
Not Wei 11mm G115 steel plate).Welding technological properties is excellent, and appearance of weld is attractive in appearance, and weld edge is regular, no undercut, gas
The weld defects such as hole, crackle.
4 deposited metal mechanical property of table
5 deposited metal drawing by high temperature data of table
Embodiment 3
The solder flux of embodiment 1 is coordinated welding wire, and (component of weld wire is by mass percentage：C 0.082、Mn 0.70、Si
0.37、S 0.005、P 0.007、Cr 9.43、Ni 0.55、Mo 0.001、Co 2.88、W 2.73、V 0.18、Nb 0.06、N
0.008th, B 0.002, Cu 0.85, balance of Fe and impurity) (weld diameter is that Φ 73mm, wall thickness divides to carry out TIG weld test
Not Wei 11mm G115 steel plate).Welding technological properties is excellent, and appearance of weld is attractive in appearance, and weld edge is regular, no undercut, gas
The weld defects such as hole, crackle.
4 deposited metal mechanical property of table
5 deposited metal drawing by high temperature data of table
Embodiment 1-3 is every to test the solder technology requirement that its performance is satisfied by 630-650 DEG C of Ultra Supercritical Boiler Steel.
The welding wire of embodiment 1-3 is prepared by the following method：
1. smelt in vaccum sensitive stove according to conventional gas protection welding wire smelting process.
2. wire rod is made, through drawing, heat treatment, is drawn to diameter of phi 2.4mm.
3. cleaning, copper facing, bundling obtain welding wire.
Claims (6)
1. the TIG welding wire of a kind of Steel for steam-temperature ultra-supercritical thermal power unit, the Quality of Final Welding Wire percentage composition is as follows：C
0.08-0.12、Mn 0.60-1.00、0〈Si≤0.50、0〈S≤0.010、0〈P≤0.010、Cr 8.0-10.0、0〈Ni≤
0.80、0〈Mo≤0.10、Co 2.6-3.2、W 2.5-3.2、V 0.15-0.30、Nb 0.02-0.10、N 0.005-0.015、B
0.002-0.010, Cu 0.70-1.10, balance of Fe and impurity.
2. the TIG welding wire of Steel for steam-temperature ultra-supercritical thermal power unit according to claim 1, it is characterised in that：
The C 0.080-0.096, Mn 0.60-1.00, Si 0.35-0.43,0 ＜ S≤0.010,0 ＜ P≤0.010, Cr 8.20-
9.43、Ni 0.50-0.60、0〈Mo≤0.10、Co 2.72-2.88、W 2.63-2.75、V 0.18-0.19、Nb 0.02-
0.10th, N 0.008-0.012, B 0.002-0.010, Cu 0.70-1.10, balance of Fe and impurity.
3. the TIG welding wire of Steel for steam-temperature ultra-supercritical thermal power unit according to claim 2, it is characterised in that：
The C 0.085, Mn 0.70, Si 0.35, S 0.005, P 0.007, Cr 8.20, Ni 0.60, Mo 0.001, Co 2.80,
W 2.75、V 0.19、Nb 0.03、N 0.010、B 0.002、Cu 0.85.
4. the TIG welding wire of Steel for steam-temperature ultra-supercritical thermal power unit according to claim 2, it is characterised in that：
The C 0.096, Mn 0.70, Si 0.43, S 0.005, P 0.007, Cr 8.90, Ni 0.50, Mo 0.001, Co 2.72,
W 2.63、V 0.19、Nb 0.04、N 0.012、B 0.002、Cu 0.85.
5. the TIG welding wire of Steel for steam-temperature ultra-supercritical thermal power unit according to claim 2, it is characterised in that：
The C 0.082, Mn 0.70, Si 0.37, S 0.005, P 0.007, Cr 9.43, Ni 0.55, Mo 0.001, Co 2.88,
W 2.73、V 0.18、Nb 0.06、N 0.008、B 0.002、Cu 0.85.
6. the TIG weldering weldering of the Steel for steam-temperature ultra-supercritical thermal power unit described in a kind of claim 1 to 5 any claim
The preparation method of silk, comprises the following steps：
1. smelt in vaccum sensitive stove according to conventional gas protection welding wire smelting process；
2. wire rod is made, through drawing, heat treatment, is drawn to diameter of phi 2.4mm；
3. cleaning, copper facing, bundling obtain welding wire.
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| CN201610961384.2A CN106425157A (en) | 2016-10-28 | 2016-10-28 | TIG welding wire of steel for steam temperature ultra supercritical thermal power generating unit and preparation method thereof |
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|---|---|---|---|
| CN201610961384.2A CN106425157A (en) | 2016-10-28 | 2016-10-28 | TIG welding wire of steel for steam temperature ultra supercritical thermal power generating unit and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108127291A (en) * | 2017-12-25 | 2018-06-08 | 昆山京群焊材科技有限公司 | A kind of 650 DEG C of ultra supercritical coal-fired unit heat resisting steel solid welding wires |
| CN108838579A (en) * | 2018-07-13 | 2018-11-20 | 北京北冶功能材料有限公司 | A kind of bright welding wire of ultra supercritical coal fired power plant heat resisting steel |
| CN108998650A (en) * | 2018-07-10 | 2018-12-14 | 内蒙古北方重工业集团有限公司 | 630 DEG C of extra-supercritical unit G115 method for manufacturing large-diameter thick-wall seamless steel pipe |
| CN109465565A (en) * | 2017-09-07 | 2019-03-15 | 宝山钢铁股份有限公司 | A kind of gas protecting welding wire and its manufacturing method |
| CN111843284A (en) * | 2020-07-07 | 2020-10-30 | 武汉大学 | Welding wire for 9Cr-3W-3Co martensite heat-resistant steel and application of welding wire in GTAW welding process |
| CN113478117A (en) * | 2021-05-25 | 2021-10-08 | 江苏新恒基特种装备股份有限公司 | Chromium-tungsten-cobalt alloy argon arc welding wire for additive manufacturing and preparation method thereof |
| CN114161027A (en) * | 2022-01-07 | 2022-03-11 | 北京科技大学 | Welding wire for 630 ℃ ultra-supercritical G115 heat-resistant steel, preparation method and GTAW using method |
| EP3928917A4 (en) * | 2019-02-21 | 2022-04-06 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Welding material for high-cr ferritic heat-resistant steels |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109465565A (en) * | 2017-09-07 | 2019-03-15 | 宝山钢铁股份有限公司 | A kind of gas protecting welding wire and its manufacturing method |
| CN108127291A (en) * | 2017-12-25 | 2018-06-08 | 昆山京群焊材科技有限公司 | A kind of 650 DEG C of ultra supercritical coal-fired unit heat resisting steel solid welding wires |
| CN108998650A (en) * | 2018-07-10 | 2018-12-14 | 内蒙古北方重工业集团有限公司 | 630 DEG C of extra-supercritical unit G115 method for manufacturing large-diameter thick-wall seamless steel pipe |
| CN108998650B (en) * | 2018-07-10 | 2023-02-28 | 内蒙古北方重工业集团有限公司 | Method for manufacturing large-caliber thick-wall seamless steel pipe of 630 ℃ ultra-supercritical unit G115 |
| CN108838579A (en) * | 2018-07-13 | 2018-11-20 | 北京北冶功能材料有限公司 | A kind of bright welding wire of ultra supercritical coal fired power plant heat resisting steel |
| CN108838579B (en) * | 2018-07-13 | 2020-07-03 | 北京北冶功能材料有限公司 | Bright welding wire for heat-resistant steel of ultra-supercritical coal-fired power station |
| EP3928917A4 (en) * | 2019-02-21 | 2022-04-06 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Welding material for high-cr ferritic heat-resistant steels |
| CN111843284A (en) * | 2020-07-07 | 2020-10-30 | 武汉大学 | Welding wire for 9Cr-3W-3Co martensite heat-resistant steel and application of welding wire in GTAW welding process |
| CN113478117A (en) * | 2021-05-25 | 2021-10-08 | 江苏新恒基特种装备股份有限公司 | Chromium-tungsten-cobalt alloy argon arc welding wire for additive manufacturing and preparation method thereof |
| CN114161027A (en) * | 2022-01-07 | 2022-03-11 | 北京科技大学 | Welding wire for 630 ℃ ultra-supercritical G115 heat-resistant steel, preparation method and GTAW using method |
| CN114161027B (en) * | 2022-01-07 | 2022-12-30 | 北京科技大学 | Welding wire for 630 ℃ ultra-supercritical G115 heat-resistant steel, preparation method and GTAW using method |
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Address after: 643010 No. 1 Danyang Street, Ziliujing District, Zigong City, Sichuan Province Applicant after: Sichuan Atlantic China Welding Consumables, Inc. Applicant after: DEC Dongfang Boiler (Group) Co., Ltd. Address before: 643010 2 Ma Chong Kou street, Da'an District, Zigong, Sichuan Applicant before: Sichuan Atlantic China Welding Consumables, Inc. Applicant before: DEC Dongfang Boiler (Group) Co., Ltd. |
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Application publication date: 20170222 |