CN108788405A - The tungsten argon arc welding method of austenitic heat-resistance steel - Google Patents
The tungsten argon arc welding method of austenitic heat-resistance steel Download PDFInfo
- Publication number
- CN108788405A CN108788405A CN201810643483.5A CN201810643483A CN108788405A CN 108788405 A CN108788405 A CN 108788405A CN 201810643483 A CN201810643483 A CN 201810643483A CN 108788405 A CN108788405 A CN 108788405A
- Authority
- CN
- China
- Prior art keywords
- welding
- less
- voltage
- electric current
- speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- 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
- B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
- B23K9/0052—Welding of pipe panels
-
- 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
- B23K9/235—Preliminary treatment
Abstract
The present invention discloses the tungsten argon arc welding method of austenitic heat-resistance steel; the seamless steel pipe of austenitic heat-resistance steel 22Cr25NiWCoCu (UNSS31035) is welded; welding point is using unilateral 30 ° of double V-grooves and clears up; argon tungsten-arc welding spot welding fixed position is first used before adopting weldering; combination pairing reuses argon tungsten-arc welding and carries out single face welding and double face shaping, do not preheated before weldering; postwelding is not heat-treated, while being protected using full argon gas.The austenitic heat-resistance steel steel conduit welding procedure of the present invention reduces welding stress and deformation, the brittleness of welding point can be reduced, inhibit the generation of fire check, realize that the improvement of Welded Joints plasticity and toughness is promoted, to which synthesis improves the mechanical property after pipeline welding.
Description
Technical field
The present invention relates to welding technology fields, more particularly, are related to a kind of using the novel Ovshinsky of mating welding wire welding
The argon tungsten arc process of body heat resisting steel using mating welding wire more particularly to a kind of, welds the tungsten of Novel austenitic heat-resistance steel
Electrode argon arc welding technique.
Background technology
Greatly develop high parameter, the extra-supercritical unit of large capacity is to improve thermal power station's entirety generating efficiency, prevention haze
Important channel.Advanced ultra supercritical coal-fired unit main steam pressure breaks through 30MPa, and reheat steam temperature is promoted to 623 DEG C, and
Use double reheat technology, operational efficiency can be improved to 50% or more (operational efficiency of existing boiler is 35%~
45%).After station boiler is run under higher temperature and pressure, production efficiency can be significantly increased and can degree of greatly reducing power consumption
Coal amount.In the superheater and reheater tube outlet section of ultra-supercritical boiler, austenitic heat-resistance steel is generally used, mainly there is 18%Cr
The HR3C etc. of the Super304H and 20%~25%Cr series of series.After vapor (steam) temperature parameter reaches 620 DEG C, HR3C steel exists
It is difficult to meet the requirements in intensity, not only intensity cannot be met the requirements Super304H, but also antioxygenic property also shows slightly inferior.Newly
There is type austenitic heat-resistance steel 22Cr25NiWCoCu (UNS S31035) creep rupture strength to be better than higher than HR3C, antioxygenic property
The comprehensive advantage of Super304H, can be in steam exit temperature or reheated steam outlet temperature up to 623 DEG C of efficient ultra supercritical pot
HR3C and Super304H is substituted in stove.22Cr25NiWCoCu steel is at a high temperature of 700 DEG C or so using with superior creep
Drag, corrosion resistance, oxidative resistance, once the ideal material become for reheater and superheater that comes out.So to the material
Research and development Development of Ultra-Supercritical generating set is had a very important significance.
Welding is to build and safeguard the essential means of ultra-supercritical boiler.It is resistance to be now widely used for novel austenite
The wlding of hot steel 22Cr25NiWCoCu is Sanicro 53 or Alloy 617mod, but both above-mentioned is all nickel-base material,
Expenses Cost is higher, and the import period is longer, considerably increases the input of power plant construction.Meanwhile once there is morning in dissimilar steel joint
Phase Problem of Failure can seriously affect the service life of welded tube.For this phenomenon, it is domestic it is entirely autonomous develop with
The matched solid core welding wire of 22Cr25NiWCoCu composition of steel.However, being directed to the base material (22Cr25NiWCoCu) and the welding material
Associated welds technique it is clear not yet.Selection of Welding is improper, is easy to cause welding point and embrittlement, fire check and power occurs
The problems such as performance is not up to standard is learned, this will seriously affect the safety and reliability of extra-supercritical unit, and less serious case's production cannot be just
Often operating, severe patient can cause catastrophic failure.
Invention content
It is an object of the invention to overcome the deficiencies of the prior art and provide the Gas Tungsten Arc Welding sides of austenitic heat-resistance steel
Method, i.e., a kind of argon tungsten-arc welding process for the solid core welding wire being directed to 22Cr25NiWCoCu steel and its mating chemical composition.
The technical purpose of the present invention is achieved by following technical proposals：
The tungsten argon arc welding method of austenitic heat-resistance steel carries out as steps described below：
Austenitic heat-resistance steel selects 22Cr25NiWCoCu (UNSS31035) seamless steel pipe, welding wire to use domestic mating chemical composition
Solid core welding wire, welding point use unilateral 30 ° of double V-grooves, root face be 1-3mm, root gap be 1-3mm, weldering before first use
Argon tungsten-arc welding spot welding fixed position；Using the multi-pass welding of argon tungsten-arc welding, single face welding and double face shaping is not pre- before weldering for welding
Heat, postwelding are not heat-treated, and interlayer temperature will control within 100 DEG C, welding current 90-120A, voltage 8-12V, and sweating heat is defeated
Enter and be less than 1KJ/mm, speed of welding is not more than 1.5mm/s, and welding is whole to be protected using argon gas, flow 8-12L/min.
In the above-mentioned technical solutions, welding wire uses the solid core welding wire of domestic mating chemical composition, a diameter of Φ 2.4mm；
The outer diameter of 22Cr25NiWCoCu (UNSS31035) seamless steel pipe, pipe is φ 53.8mm, wall thickness 8.9mm.
In the above-mentioned technical solutions, should be clean with knife, clearage with grinding wheel is frustrated by the burr on weld bond before welding, stainless steel is used in combination
Brush and acetone or other organic solutions clean out foul, the paint within groove face and interior outside 30mm, using abrasive machine
Polishing is until expose metallic luster, degreasing time 2-3 hours.
In the above-mentioned technical solutions, nozzle groove end face should be perpendicular to center line, and the alignment clearance of two nozzles should be uniform, such as
Shown in attached drawing, when weldment level is fixed, its section can be regarded as to clock face, positioned in the position at 12 o'clock before welding
(solid point) welds.
In the above-mentioned technical solutions, after welding, by the splatter of pipe surfaces externally and internally, slag, oxide skin, burr,
Overlap, pit, oil removal are clean.
In the above-mentioned technical solutions, purity of argon must not be less than 99.90%-99.96%, first will when being inflated in welded pipe line
Then closing continues argon filling for inner air tube discharge, and argon gas leakage rate should be less than air inflow；It first ventilates before welding, after welding
Lag is died.
In the above-mentioned technical solutions, it in the multi-pass welding of argon tungsten-arc welding, has often welded together, has thoroughly removed welding slag
With splashing, especially connector centre and bevelled edge.
In the above-mentioned technical solutions, tack welding parameter (i.e. tack welding layer)：Electric current is 95-110A, and voltage is 10-
12V, 1-1.2mm/s of speed of welding, thermal weld stress are less than 1KJ/mm；It is preferred that electric current is 98-102A, voltage is 10-11V,
1-1.1mm/s of speed of welding, thermal weld stress are less than 1KJ/mm.
In the above-mentioned technical solutions, bottoming welding parameter (i.e. first layer)：Electric current is 110-120A, and voltage is 8-12V,
1-1.5mm/s of speed of welding, thermal weld stress are less than 1KJ/mm；It is preferred that electric current is 115-120A, voltage is 10-11V, weldering
1-1.3mm/s of speed is met, thermal weld stress is less than 1KJ/mm.
In the above-mentioned technical solutions, filling welding parameter (i.e. the second layer)：Electric current is 95-100A, and voltage is 10-12V,
1-1.2mm/s of speed of welding, thermal weld stress are less than 1KJ/mm；It is preferred that electric current is 98-100A, voltage is 10-11V, welding
1-1.1mm/s of speed, thermal weld stress are less than 1KJ/mm.
In the above-mentioned technical solutions, filling welding parameter (i.e. third layer)：Electric current is 95-100A, and voltage is 10-12V,
1-1.2mm/s of speed of welding, thermal weld stress are less than 1KJ/mm；It is preferred that electric current is 98-100A, voltage is 10-11V, welding
1-1.1mm/s of speed, thermal weld stress are less than 1KJ/mm.
In the above-mentioned technical solutions, filling welding parameter (i.e. the 4th layer)：Electric current is 95-100A, and voltage is 10-12V,
1-1.2mm/s of speed of welding, thermal weld stress are less than 1KJ/mm；It is preferred that electric current is 98-100A, voltage is 10-11V, welding
1-1.1mm/s of speed, thermal weld stress are less than 1KJ/mm.
In the above-mentioned technical solutions, cover welding parameter (i.e. layer 5 first)：Electric current is 95-100A, and voltage is
10-12V, 1-1.2mm/s of speed of welding, thermal weld stress are less than 1KJ/mm；It is preferred that electric current is 99-100A, voltage is 10-
11V, 1-1.1mm/s of speed of welding, thermal weld stress are less than 1KJ/mm.
In the above-mentioned technical solutions, cover welding parameter (i.e. layer 5 second)：Electric current is 95-100A, and voltage is
10-12V, 1-1.2mm/s of speed of welding, thermal weld stress are less than 1KJ/mm；It is preferred that electric current is 99-100A, voltage is 10-
11V, 1-1.1mm/s of speed of welding, thermal weld stress are less than 1KJ/mm.
Compared with prior art, beneficial effects of the present invention are as follows：(1) this austenitic heat-resistance steel steel of the present invention
There is pipeline welding process each stage parameter of technique strictly rationally to control, and standard process reduces welding stress and deformation, can be with
The brittleness for reducing welding point inhibits the generation of fire check, realizes that the improvement of Welded Joints plasticity and toughness is promoted, to comprehensive
Close the mechanical property after improving pipeline welding.(2) in the welding method of the present invention, by choosing suitable sealing wire heat,
Eliminate the weld preheating processing to welding base metal and the post weld heat treatment to weld seam in the welding process.In this way, ensureing to weld
In the case of connecing quality, welding operating procedure is simplified, improves welding job efficiency.
Description of the drawings
Fig. 1 is divided edge structure schematic diagram in technical solution of the present invention.
Fig. 2 is solid point welding structure schematic diagram in technical solution of the present invention.
Specific implementation mode
The embodiment of the present invention is described in detail below, but what the present invention can be defined by the claims and cover
Multitude of different ways is implemented.Below by way of specific embodiment, the present invention will be described in detail.The present invention includes the following steps：
Step 1, base material material selection：Austenitic heat-resistance steel selects 22Cr25NiWCoCu (UNSS31035) seamless steel pipe,
The outer diameter of pipe is φ 53.8mm, wall thickness 8.9mm, and pipe specification is without being limited thereto.Select wlding：Using the tungsten of domestic mating chemical composition
Electrode argon arc welding solid core welding wire, a diameter of Φ 2.4mm, gage of wire are without being limited thereto.
Welding wire is the product of Kunshan Gintune Welding Co., Ltd., and application No. is 2017114261509, the applying date is
On December 25th, 2017, welding wire, that is, welding rod are made of core wire and coating, and coating is coated on core wire outer wall, and the core wire uses
Alloy core wire, coating use CaO-CaF2-SiO2 slag systems, alloying element to use core wire for welding rod transition；By weight percentage,
Deposited metal composition is：C 0.03-0.10, Mn 1.0-2.5, Si≤0.80, Ni 24.0-26.0, Cr 21.5-23.5,
Mo 1.5-2.5, Cu 2.5-3.5, Nb 0.30-0.60, W 3.0-4.0, Co 1.0-2.0, N 0.15-0.30, surplus Fe
And impurity, it is used for the soldering of ultra supercritical coal-fired unit austenite heat-resistance stainless steel.
Step 2, retaining wall on slope：Welding point use unilateral 30 ° of double V-grooves, root face 1mm, root gap 2mm, by
The methods of lathe, hand held, electric beveling machine or plasma cut are processed into structure as is illustrated schematically.Bevel angle and
Root face should be consistent, and alignment clearance answers reconditioning to even circumferential, groove type and size：Welding point uses unilateral 30 ° of V-types
Groove, root face 1mm, root gap 2mm.
Step 3, groove cleaning：Should be clean with knife, clearage with grinding wheel is frustrated by the burr on weld bond before pipeline welding, it is used in combination not
Rust steel brush and acetone or other organic solutions clean out foul, the paint within groove face and interior outside 30mm, using sand
Turbine polishing is until expose metallic luster, degreasing time 2-3 hours.
Step 4, tack welding：Argon tungsten-arc welding spot welding fixed position, combination pairing are first used before adopting weldering.Nozzle groove end face
Should be perpendicular to center line, the alignment clearance of two nozzles should be uniform, as shown in the picture, when weldment level is fixed, can see its section
Make clock face, (solid point) weldering is positioned in the position at 12 o'clock before welding.
Step 5, welding condition：Argon tungsten-arc welding (manual welding), single face welding and double face shaping do not preheat, postwelding before weldering
It is not heat-treated.With multi-pass welding, interlayer temperature will control within 100 DEG C, and thermal weld stress is less than 1KJ/mm.Often weld
Together, it thoroughly removes welding slag and splashes, especially connector centre and bevelled edge.Specific welding condition see the table below.
Step 6, gas：Full argon gas protection, flow 8-12L/min.It first ventilates before welding, is lagged after welding
It dies.Purity of argon must not be less than 99.90%-99.96%, first be discharged then to close by inner air tube when managing interior inflation and continue to fill
Argon, argon gas leakage rate should be less than air inflow.
Step 7 should be by the splatter of pipe surfaces externally and internally, slag, oxide skin, burr, overlap, recessed after work
Hole, oil removal are clean.
After welding has been completed, the element of base material and weld seam is analyzed, as shown in the table, after the welding treatment, weldering
Seam and base material show different element compositions.
| Mass fraction | C | Si | Mn | Cr | Ni | Nb | N | W | Co | Cu | B |
| Base material | 0.069 | 0.17 | 0.54 | 23.7 | 25.7 | 0.56 | 0.23 | 3.10 | 1.57 | 3.06 | – |
| Weld seam | 0.08 | 0.291 | 1.78 | 23.23 | 24.6 | 0.433 | 0.113 | 3.82 | 1.54 | 3.52 | 0.001 |
According to national standard GBT2651-2008 welding point stretching test methods, using Changchun testing machine institute's universal testing machine into
The tension test of row at room temperature, it is 460MPa, tensile strength 840MPa to show that the room temperature of welding point distinguishes intensity, with mother
Material compares following table, and strength of welded joint is apparently higher than base material, and fracture position appears in base material position.
Illustrative description has been done to the present invention above, it should explanation, the case where not departing from core of the invention
Under, any simple deformation, modification or other skilled in the art can not spend the equivalent replacement of creative work equal
Fall into protection scope of the present invention.
Claims (10)
1. the tungsten argon arc welding method of austenitic heat-resistance steel, which is characterized in that carry out as steps described below：Austenitic heat-resistance steel
Selection 22Cr25NiWCoCu seamless steel pipes, welding wire are using unilateral 30 ° of double V-grooves, root face using solid core welding wire, welding point
1-3mm, root gap are 1-3mm, and argon tungsten-arc welding spot welding fixed position is first used before weldering；Welding is more using argon tungsten-arc welding
Layer multi-pass welding, single face welding and double face shaping do not preheat before weldering, and postwelding is not heat-treated, and interlayer temperature will control within 100 DEG C, weldering
Electric current 90-120A, voltage 8-12V are met, thermal weld stress is less than 1KJ/mm, and speed of welding is not more than 1.5mm/s, and welding whole process is adopted
It is protected with argon gas, flow 8-12L/min；Solid core welding wire, that is, welding rod, is made of core wire and coating, and coating is coated on outside core wire
Wall, the core wire use alloy core wire, coating that CaO-CaF2-SiO2 slag systems, alloying element is used to use core wire for welding rod transition；It presses
Weight percent meter, deposited metal composition are：C 0.03-0.10, Mn 1.0-2.5, Si≤0.80, Ni 24.0-
26.0, Cr 21.5-23.5, Mo 1.5-2.5, Cu 2.5-3.5, Nb 0.30-0.60, W 3.0-4.0, Co 1.0-2.0, N
0.15-0.30, surplus are Fe and impurity.
2. the tungsten argon arc welding method of austenitic heat-resistance steel according to claim 1, which is characterized in that
22Cr25NiWCoCu seamless steel pipes are UNSS31035, and the outer diameter of pipe is φ 53.8mm, wall thickness 8.9mm；Solid core welding wire diameter
For Φ 2.4mm.
3. the tungsten argon arc welding method of austenitic heat-resistance steel according to claim 1, which is characterized in that nozzle bevel end
Face should be perpendicular to center line, and the alignment clearance of two nozzles should be uniform, when weldment level is fixed, regards its section as clock face, welds
Before connecing (solid point) weldering is positioned in the position at 12 o'clock；Purity of argon must not be less than 99.90%-99.96%, welded pipe line
First inner air tube is discharged then to close when interior inflation and continues argon filling, argon gas leakage rate should be less than air inflow；First lead to before welding
Gas, lag is died after welding.
4. the tungsten argon arc welding method of austenitic heat-resistance steel according to claim 1, which is characterized in that tack welding parameter
(i.e. tack welding layer)：Electric current is 95-110A, and voltage is 10-12V, 1-1.2mm/s of speed of welding, and thermal weld stress is less than
1KJ/mm；It is preferred that electric current is 98-102A, voltage is 10-11V, and 1-1.1mm/s of speed of welding, thermal weld stress is less than 1KJ/
mm。
5. the tungsten argon arc welding method of austenitic heat-resistance steel according to claim 1, which is characterized in that bottoming welding ginseng
Number (i.e. first layer)：Electric current is 110-120A, and voltage is 8-12V, 1-1.5mm/s of speed of welding, and thermal weld stress is less than
1KJ/mm；It is preferred that electric current is 115-120A, voltage is 10-11V, 1-1.3mm/s of speed of welding, and thermal weld stress is less than
1KJ/mm。
6. the tungsten argon arc welding method of austenitic heat-resistance steel according to claim 1, which is characterized in that filling welding ginseng
Number (i.e. the second layer)：Electric current is 95-100A, and voltage is 10-12V, 1-1.2mm/s of speed of welding, and thermal weld stress is less than
1KJ/mm；It is preferred that electric current is 98-100A, voltage is 10-11V, and 1-1.1mm/s of speed of welding, thermal weld stress is less than 1KJ/
mm。
7. the tungsten argon arc welding method of austenitic heat-resistance steel according to claim 1, which is characterized in that filling welding ginseng
Number (i.e. third layer)：Electric current is 95-100A, and voltage is 10-12V, 1-1.2mm/s of speed of welding, and thermal weld stress is less than
1KJ/mm；It is preferred that electric current is 98-100A, voltage is 10-11V, and 1-1.1mm/s of speed of welding, thermal weld stress is less than 1KJ/
mm。
8. the tungsten argon arc welding method of austenitic heat-resistance steel according to claim 1, which is characterized in that filling welding ginseng
Number (i.e. the 4th layer)：Electric current is 95-100A, and voltage is 10-12V, 1-1.2mm/s of speed of welding, and thermal weld stress is less than
1KJ/mm；It is preferred that electric current is 98-100A, voltage is 10-11V, and 1-1.1mm/s of speed of welding, thermal weld stress is less than 1KJ/
mm。
9. the tungsten argon arc welding method of austenitic heat-resistance steel according to claim 1, which is characterized in that cover welding is joined
Number (i.e. layer 5 first)：Electric current is 95-100A, and voltage is 10-12V, 1-1.2mm/s of speed of welding, thermal weld stress
Less than 1KJ/mm；It is preferred that electric current is 99-100A, voltage is 10-11V, 1-1.1mm/s of speed of welding, and thermal weld stress is less than
1KJ/mm。
10. the tungsten argon arc welding method of austenitic heat-resistance steel according to claim 1, which is characterized in that cover welding
Parameter (i.e. layer 5 second)：Electric current is 95-100A, and voltage is 10-12V, 1-1.2mm/s of speed of welding, and sweating heat is defeated
Enter to be less than 1KJ/mm；It is preferred that electric current is 99-100A, voltage is 10-11V, 1-1.1mm/s of speed of welding, and thermal weld stress is small
In 1KJ/mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810643483.5A CN108788405A (en) | 2018-06-21 | 2018-06-21 | The tungsten argon arc welding method of austenitic heat-resistance steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810643483.5A CN108788405A (en) | 2018-06-21 | 2018-06-21 | The tungsten argon arc welding method of austenitic heat-resistance steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108788405A true CN108788405A (en) | 2018-11-13 |
Family
ID=64084178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810643483.5A Pending CN108788405A (en) | 2018-06-21 | 2018-06-21 | The tungsten argon arc welding method of austenitic heat-resistance steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108788405A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109514034A (en) * | 2018-12-07 | 2019-03-26 | 西安飞机工业（集团）有限责任公司 | A kind of large-scale composite material forming frock template welding method |
| CN109648171A (en) * | 2019-02-27 | 2019-04-19 | 上海外高桥造船有限公司 | Stainless steel tube welding method |
| CN110253116A (en) * | 2019-06-20 | 2019-09-20 | 中船澄西新荣船舶有限公司 | A kind of argon-are welding technology of super austenitic stainless steel 254SMo steel pipe |
| CN111230255A (en) * | 2020-01-19 | 2020-06-05 | 武汉一冶钢结构有限责任公司 | Welding method for improving low-temperature toughness of 304L austenitic stainless steel welding joint |
| CN113084313A (en) * | 2021-03-03 | 2021-07-09 | 广州特种承压设备检测研究院 | Argon tungsten-arc welding process for steel for ultra-supercritical boiler |
| CN113084309A (en) * | 2021-04-16 | 2021-07-09 | 东方电气(广州)重型机器有限公司 | Welding method for chromium molybdenum steel and heat-resistant stainless steel under high-temperature liquid sodium medium |
| CN113634853A (en) * | 2021-08-27 | 2021-11-12 | 中化二建集团有限公司 | Method for welding composite steel pipeline made of 1-1/4Cr-1/2Mo +410S |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489842A (en) * | 2011-12-07 | 2012-06-13 | 鞍山锅炉厂有限公司 | Argon tungsten-arc welding process for pearlite heat-resistant steel pipe and austenitic heat-resistant steel pipe |
| CN104858555A (en) * | 2015-06-10 | 2015-08-26 | 江苏力沛电力工程技术服务有限公司 | Pressure pipeline welding process |
| CN107150161A (en) * | 2017-05-26 | 2017-09-12 | 中国能源建设集团湖南火电建设有限公司 | A kind of T91 steel welding technologies |
| CN108098187A (en) * | 2017-12-25 | 2018-06-01 | 昆山京群焊材科技有限公司 | A kind of ultra supercritical coal-fired unit austenite heat-resistance stainless steel welding rod |
-
2018
- 2018-06-21 CN CN201810643483.5A patent/CN108788405A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489842A (en) * | 2011-12-07 | 2012-06-13 | 鞍山锅炉厂有限公司 | Argon tungsten-arc welding process for pearlite heat-resistant steel pipe and austenitic heat-resistant steel pipe |
| CN104858555A (en) * | 2015-06-10 | 2015-08-26 | 江苏力沛电力工程技术服务有限公司 | Pressure pipeline welding process |
| CN107150161A (en) * | 2017-05-26 | 2017-09-12 | 中国能源建设集团湖南火电建设有限公司 | A kind of T91 steel welding technologies |
| CN108098187A (en) * | 2017-12-25 | 2018-06-01 | 昆山京群焊材科技有限公司 | A kind of ultra supercritical coal-fired unit austenite heat-resistance stainless steel welding rod |
Non-Patent Citations (2)
| Title |
|---|
| 杨顺田 等: "新型超超临界531035锅炉用钢焊接试验", 《焊接》 * |
| 陈亮 等: "700℃超超临界锅炉高温过热器再热器用 Sanicro 25新材料焊接工艺研究", 《锅炉技术》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109514034A (en) * | 2018-12-07 | 2019-03-26 | 西安飞机工业（集团）有限责任公司 | A kind of large-scale composite material forming frock template welding method |
| CN109648171A (en) * | 2019-02-27 | 2019-04-19 | 上海外高桥造船有限公司 | Stainless steel tube welding method |
| CN110253116A (en) * | 2019-06-20 | 2019-09-20 | 中船澄西新荣船舶有限公司 | A kind of argon-are welding technology of super austenitic stainless steel 254SMo steel pipe |
| CN111230255A (en) * | 2020-01-19 | 2020-06-05 | 武汉一冶钢结构有限责任公司 | Welding method for improving low-temperature toughness of 304L austenitic stainless steel welding joint |
| CN113084313A (en) * | 2021-03-03 | 2021-07-09 | 广州特种承压设备检测研究院 | Argon tungsten-arc welding process for steel for ultra-supercritical boiler |
| CN113084309A (en) * | 2021-04-16 | 2021-07-09 | 东方电气(广州)重型机器有限公司 | Welding method for chromium molybdenum steel and heat-resistant stainless steel under high-temperature liquid sodium medium |
| CN113634853A (en) * | 2021-08-27 | 2021-11-12 | 中化二建集团有限公司 | Method for welding composite steel pipeline made of 1-1/4Cr-1/2Mo +410S |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108788405A (en) | The tungsten argon arc welding method of austenitic heat-resistance steel | |
| CN104759743B (en) | A kind of nickel-based alloy pipe argon arc welding process | |
| CN104084675B (en) | A kind of high-temperature nickel-base alloy welding procedure | |
| CN101100013A (en) | Thin-wall stainless steel double-layer and carbon steel base layer composite tube girth weld welding method | |
| CN106670738B (en) | The welding procedure of boiler tubing G115 steel | |
| CN101972878A (en) | Process for welding duplex stainless steel | |
| CN105665890A (en) | Welding process for stainless steel pipelines | |
| CN101927390A (en) | Method for welding circumferential weld between metal thin-wall clad layer and base layer of clad pipe | |
| CN110541137A (en) | Method for preparing composite coating of waste incineration power generation boiler tube by integrating induction remelting and injection | |
| EP2687311A1 (en) | Welding structure and welding method | |
| CN107598351A (en) | The cylindrical large area plasma overlaying method of Stellite cobalt-base alloys | |
| CN109317789A (en) | The welding method of heat exchanger built-up welding tube sheet and T91 heat exchanger tube | |
| CN104923928A (en) | Q690D steel tube longitudinal seam welding method for crane boom | |
| CN103331327A (en) | Bimetal composite pipe girth welding method | |
| CN106975819A (en) | A kind of Ni-based composite bimetal pipe all-position automatic soldering method | |
| CN111331315B (en) | Ethylene cracking furnace tube welding repair method | |
| JP5812293B2 (en) | Bend steel pipe manufacturing method | |
| CN104191183A (en) | Metal composite pipe production method | |
| CN105081541B (en) | A kind of method that use electric resistance welding produces half metallurgy type metal composite pipe | |
| CN107378196A (en) | A kind of stainless steel pipes welding procedure | |
| CN107052710A (en) | A kind of undercoating pipeline manufacture method | |
| CN104070271B (en) | 15Cr1Mo1V valve body and WB36 pipe arrangement different steel weld method | |
| CN114131242B (en) | Alloy material for valve seat sealing surface overlaying layer and welding process thereof | |
| CN114734128A (en) | Welding repair method for valve seat sealing surface | |
| CN106624288A (en) | Welding method for header pipelines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181113 |