CN110421236A - A kind of military service deterioration Conversion Furnace Tubes in Hydrogen Plants welding repair method - Google Patents
A kind of military service deterioration Conversion Furnace Tubes in Hydrogen Plants welding repair method Download PDFInfo
- Publication number
- CN110421236A CN110421236A CN201910596153.XA CN201910596153A CN110421236A CN 110421236 A CN110421236 A CN 110421236A CN 201910596153 A CN201910596153 A CN 201910596153A CN 110421236 A CN110421236 A CN 110421236A
- Authority
- CN
- China
- Prior art keywords
- welding
- furnace tubes
- conversion furnace
- hydrogen plants
- repair method
- 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.)
- Granted
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
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
-
- 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
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
- B23K9/042—Built-up welding on planar surfaces
-
- 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
Abstract
The invention belongs to Conversion Furnace Tubes in Hydrogen Plants recovery technique fields, disclose a kind of military service deterioration Conversion Furnace Tubes in Hydrogen Plants welding repair method, tissue damage inspection is carried out to deterioration Conversion Furnace Tubes in Hydrogen Plants of being on active service first, determines and structural transformation only occurs inside boiler tube, micro-crack is not present；Then boiler tube is circumferentially processed into V-butt, groove is heat-treated using electric arc；The thermal treatment layer that part groove face is formed is removed later, and built-up welding processing is carried out to groove using nickel-based welding wire；The overlay cladding that part groove face is formed finally is removed, using the welding wire with boiler tube homogeneity to welding at groove.Military service provided by the invention deteriorates Conversion Furnace Tubes in Hydrogen Plants welding repair method, so that deterioration Conversion Furnace Tubes in Hydrogen Plants microstructure of being on active service changes again, avoids HOT CRACK FOR WELDING P, REPAIR WELDING Quality advance occur during REPAIR WELDING.
Description
Technical field
The invention belongs to Conversion Furnace Tubes in Hydrogen Plants recovery technique fields, in particular to a kind of military service deteriorates hydrogen manufacturing
Converting furnace welding repair method.
Background technique
Continuous improvement with country to environmental requirement, process for making hydrogen are widely used in petrochemical industry.Petrochemical industry system
Hydrogen technique is mainly reacted under high temperature, high pressure and catalytic condition with vapor with light hydrocarbons, ultimately generates H2And CO2,
The reaction mainly carries out in Conversion Furnace Tubes in Hydrogen Plants.The projected life of usual Conversion Furnace Tubes in Hydrogen Plants is 10^5h, however due to
The variation of the factors such as pressure, temperature brings adverse effect, causes boiler tube that various forms just occurs in not up to life cycle
Damage.In the repair process of boiler tube, the method for directly replacing whole or portions is taken mostly.But it is bad due to being on active service
To change boiler tube and structural transformation occurs, plasticity and high-temperature behavior decline are serious, and it is obvious with new boiler tube tissue and performance difference, directly weld
When be easy to produce weld crack, be easy to cause a repairing failure to increase without secondary or even three times repair
Repair time cost and economic cost are added.Therefore, when deteriorating Conversion Furnace Tubes in Hydrogen Plants REPAIR WELDING in order to avoid being on active service
There is weld crack, how to carry out pre-welding treatment and improve repairing quality as urgent problem to be solved.
Summary of the invention
The invention solves military service deterioration Conversion Furnace Tubes in Hydrogen Plants REPAIR WELDING when be easy to appear the technology of weld crack
Problem provides a kind of military service deterioration Conversion Furnace Tubes in Hydrogen Plants welding repair method, and this method is in optimization deterioration boiler tube tissue
On the basis of further improve the solderability of boiler tube, making to repair welding difficulty reduces, and one-time success rate is greatly improved.
In order to solve the above-mentioned technical problem, the present invention is achieved by technical solution below:
A kind of military service deterioration Conversion Furnace Tubes in Hydrogen Plants welding repair method, this method are suitable for that tissue only occurs inside boiler tube
The case where transformation, there is no micro-cracks；And it carries out in accordance with the following steps:
(1) boiler tube is circumferentially processed into V-butt, surface remelting heat treatment is carried out to groove using electric arc；
(2) the surface remelting thermal treatment layer that the part groove face is formed is removed, using nickel-based welding wire to the groove
Carry out built-up welding processing；
(3) overlay cladding that the part groove face is formed is removed, using the welding wire with the boiler tube homogeneity to the slope
It is welded at mouthful.
Further, the angle of the V-butt in step (1) is 60~70 °.
Further, the electric arc in step (1) is non-melt pole inert gas shielding electric arc.
Further, the electric arc in step (1) is tungsten argon arc.
Further, 5~10 passage of processing times of the surface remelting heat treatment in step (1).
Further, remove in step (2) the surface remelting thermal treatment layer with a thickness of 0.5~1mm.
Further, the built-up welding processing method in step (2) is non-melt pole Heliarc welding, the welding wire trade mark
ERNiCr-3。
Further, remove in step (3) overlay cladding with a thickness of 0.8~1.2mm.
Further, the welding method in step (3) is non-melt pole Heliarc welding, the welding wire trade mark
H4Cr25Ni35Nb。
The beneficial effects of the present invention are:
The present invention provides a kind of military services to deteriorate Conversion Furnace Tubes in Hydrogen Plants welding repair method, and this method can make first
Position to be repaired is dissolved far from the coarse precipitates of surface certain depth, changes microstructure form and distribution, secondly built-up welding
Handling obtained overlay cladding can be the final heat affected area position for repairing welding, and then can greatly improve Material degradation boiler tube
The welding performance of part guarantees that subsequent REPAIR WELDING is not in the process HOT CRACK FOR WELDING P.
Detailed description of the invention
Fig. 1 is the axial section of surface remelting processing in embodiment；
Fig. 2 is the axial section of built-up welding processing in embodiment；
Fig. 3 is the axial section of welding point in embodiment.
In above-mentioned figure: 1- boiler tube；2- groove；3- surface remelting thermal treatment layer；4- overlay cladding
Specific embodiment
For that can further appreciate that summary of the invention of the invention, feature and effect, the following examples are hereby given, and cooperates attached drawing
Detailed description are as follows:
The present invention first observes deterioration Conversion Furnace Tubes in Hydrogen Plants microstructure of being on active service, analyzes, and determines deterioration boiler tube 1
The transformation that organization type and fractions distribution only occurs, does not generate micro-crack etc..Pass through optical microscopy or scanning electron microscopy
Mirror determines microstructure morphology and the distribution for deterioration Conversion Furnace Tubes in Hydrogen Plants 1 of being on active service.
Carrying out microstructure damage detection to boiler tube 1 is the preprosthetic necessary work of boiler tube 1, if 1 tissue damage of boiler tube
Degree is high, has already appeared creep hole or micro-crack, then this position can not be repaired by welding；If boiler tube 1 is only sent out
Raw structural transformation, it is necessary to carry out organized renewing and performance improvement using the method for the present invention, smoothly complete REPAIR WELDING.
Boiler tube 1 is first circumferentially processed into V-butt 2 by the first step, and the angle of V-butt 2 is preferably 60~70 °, to protect
The back side being capable of penetration when card welding.Then surface remelting is carried out to groove 2 using tungsten argon arc and is heat-treated 5~10 passages, with shape
At the heat treatment fine grained region of 1~2mm.The electric arc of surface remelting heat treatment is non-melt pole inert gas shielding electric arc, power supply pole
Property be straight polarity, non-melt pole electrode be tungsten electrode, diameter of phi 3.0mm, inert protective gas is argon gas, protection air-flow amount 10
~15L/min, 80~140A of arc current, 11~14V of arc voltage, 6~10cm/min of thermal treatment rate.
Second step first removes the surface remelting thermal treatment layer 3 that a part of 2 surface of groove is formed, the surface remelting heat of removing
The thickness of process layer 3 is generally 0.5~1mm, which can guarantee to clear up groove 2 while retaining remelting fine grain area
Completely.Then built-up welding processing is carried out to groove 3 using nickel-based welding wire, damage and deficiency on 1 material property of boiler tube can be made up,
Another aspect overlay cladding 4 can substantially reduce 1 area Jin Feng hot cracking tendency of boiler tube as the transition portion formally welded.Built-up welding processing
Specific method be using non-melt pole Heliarc welding, weld polarity is straight polarity, non-melt pole electrode
For tungsten electrode, diameter of phi 3.0mm, inert protective gas is argon gas, protection air-flow 10~15L/min of amount, welding wire trade mark ERNiCr-3,
Welding wire specification Φ 2.4mm, 90~120A of welding current, 10~14V of arc voltage, 5~9cm/min of speed of welding.
Third step, first removes the overlay cladding 4 that a part of 2 surface of groove is formed, and the thickness of the overlay cladding 4 of removing is generally
0.8~1.2mm, the thickness can guarantee to clean out groove 2 while retaining Ni-based wlding transition region.Then utilize with
For the H4Cr25Ni35Nb welding wire of 1 homogeneity of boiler tube by argon tungsten-arc welding to welding at groove 2, available molding is good
Welding point.Weld polarity is straight polarity, protection air-flow 10~15L/min of amount, welding wire specification Φ 2.0mm, welding current
90~120A, 10~14V of arc voltage, 5~9cm/min of speed of welding.
Further illustrate that military service provided by the present invention deteriorates Conversion Furnace Tubes in Hydrogen Plants REPAIR WELDING below with a test example
The operating process and effect of method: 7 years or so Conversion Furnace Tubes in Hydrogen Plants 1 of certain petroleum chemical enterprise's normal service, material HP40Nb, weldering
It is as follows to connect repair process:
Step 1, tissue damage detection is carried out to deterioration Conversion Furnace Tubes in Hydrogen Plants 1 of being on active service, determines 1 interior microscopic tissue of boiler tube
By austenitic matrix on its crystal boundary coarse net chain-like carbide and transgranular precipitate form, without micro-crack or creep hole
Generation；
Step 2, boiler tube 1 is circumferentially processed into 70 ° of V-butts 2, surface remelting heat is carried out to groove 2 using tungsten argon arc
Processing, tungsten electrode diameter of phi 3.0mm, protection air-flow 10~15L/min of amount, 120~140A of arc current, 11~14V of arc voltage,
6~10cm/min of thermal treatment rate, surface remelting are heat-treated 10 passage of number；
Step 3, the surface remelting thermal treatment layer 3 of about 0.8mm is removed；Utilize specification Φ 2.4mm ERNiCr-3 nickel-based welding wire
Built-up welding processing is carried out to groove 2, weld polarity is straight polarity, and tungsten electrode diameter of phi 3.0mm, inert protective gas is argon gas,
Protection air-flow 10~15L/min of amount, 90~120A of welding current, 10~14V of arc voltage, 5~9cm/min of speed of welding；
Step 4, the overlay cladding 4 of about 1mm is removed；Groove 2 is carried out using specification Φ 2.0mm H4Cr25Ni35Nb welding wire
Welding, weld polarity are straight polarity, tungsten electrode diameter of phi 3.0mm, and inert protective gas is argon gas, protection air-flow amount 10~
15L/min, 90~120A of welding current, 10~14V of arc voltage, 5~9cm/min of speed of welding.
After the completion of welding, by tissue detection the result shows that, coarse carbonization on deterioration boiler tube austenite grain boundary of being on active service
Object refines, and material property meets requirement.
Although the preferred embodiment of the present invention is described above in conjunction with attached drawing, the invention is not limited to upper
The specific embodiment stated, the above mentioned embodiment is only schematical, be not it is restrictive, this field it is common
Technical staff under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, may be used also
By make it is many in the form of specific transformation, within these are all belonged to the scope of protection of the present invention.
Claims (9)
1. a kind of military service deteriorates Conversion Furnace Tubes in Hydrogen Plants welding repair method, which is characterized in that this method is suitable for inside boiler tube
The case where structural transformation only occurs, micro-crack is not present；And it carries out in accordance with the following steps:
(1) boiler tube is circumferentially processed into V-butt, surface remelting heat treatment is carried out to groove using electric arc；
(2) the surface remelting thermal treatment layer that the part groove face is formed is removed, the groove is carried out using nickel-based welding wire
Built-up welding processing；
(3) remove the overlay cladding that the part groove face is formed, using the welding wire with the boiler tube homogeneity to the groove at
It is welded.
2. a kind of military service according to claim 1 deteriorates Conversion Furnace Tubes in Hydrogen Plants welding repair method, which is characterized in that step
Suddenly the angle of the V-butt in (1) is 60~70 °.
3. a kind of military service according to claim 1 deteriorates Conversion Furnace Tubes in Hydrogen Plants welding repair method, which is characterized in that step
Suddenly the electric arc in (1) is non-melt pole inert gas shielding electric arc.
4. a kind of military service according to claim 3 deteriorates Conversion Furnace Tubes in Hydrogen Plants welding repair method, which is characterized in that step
Suddenly the electric arc in (1) is tungsten argon arc.
5. a kind of military service according to claim 1 deteriorates Conversion Furnace Tubes in Hydrogen Plants welding repair method, which is characterized in that step
Suddenly 5~10 passage of processing times of the surface remelting heat treatment in (1).
6. a kind of military service according to claim 1 deteriorates Conversion Furnace Tubes in Hydrogen Plants welding repair method, which is characterized in that step
Suddenly remove in (2) described surface remelting thermal treatment layer with a thickness of 0.5~1mm.
7. a kind of military service according to claim 1 deteriorates Conversion Furnace Tubes in Hydrogen Plants welding repair method, which is characterized in that step
Suddenly the built-up welding processing method in (2) is non-melt pole Heliarc welding, welding wire trade mark ERNiCr-3.
8. a kind of military service according to claim 1 deteriorates Conversion Furnace Tubes in Hydrogen Plants welding repair method, which is characterized in that step
Suddenly remove in (3) described overlay cladding with a thickness of 0.8~1.2mm.
9. a kind of military service according to claim 1 deteriorates Conversion Furnace Tubes in Hydrogen Plants welding repair method, which is characterized in that step
Suddenly the welding method in (3) is non-melt pole Heliarc welding, welding wire trade mark H4Cr25Ni35Nb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910596153.XA CN110421236B (en) | 2019-07-03 | 2019-07-03 | Welding repair method for furnace tube of reforming furnace for hydrogen production through service deterioration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910596153.XA CN110421236B (en) | 2019-07-03 | 2019-07-03 | Welding repair method for furnace tube of reforming furnace for hydrogen production through service deterioration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110421236A true CN110421236A (en) | 2019-11-08 |
| CN110421236B CN110421236B (en) | 2021-05-14 |
Family
ID=68410259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910596153.XA Active CN110421236B (en) | 2019-07-03 | 2019-07-03 | Welding repair method for furnace tube of reforming furnace for hydrogen production through service deterioration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110421236B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112846562A (en) * | 2020-12-31 | 2021-05-28 | 东方电气(广州)重型机器有限公司 | Welding seam structure, shell assembly and shell assembly manufacturing method |
| CN114433982A (en) * | 2022-02-23 | 2022-05-06 | 鲁西工业装备有限公司 | Welding process for high-temperature cast steel furnace tube |
| CN115008049A (en) * | 2022-04-28 | 2022-09-06 | 广船国际有限公司 | Welding method of large-gap ultra-thick plate and container |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2796823Y (en) * | 2005-04-18 | 2006-07-19 | 王德瑞 | Furnace tube of heat exchange type convertor |
| JP2007075867A (en) * | 2005-09-15 | 2007-03-29 | Fukuda Metal Foil & Powder Co Ltd | Ni BRAZING FILLER METAL ALLOY |
| CN102764937A (en) * | 2011-05-06 | 2012-11-07 | 浦杰 | Welding production line of alloy furnace tube and tube bundle |
| JP2017061748A (en) * | 2015-09-25 | 2017-03-30 | 日新製鋼株式会社 | Ferritic stainless steel for tube |
| CN207091476U (en) * | 2017-08-19 | 2018-03-13 | 江苏标新工业有限公司 | A kind of special-shaped boiler tube annealing device |
| CN207102559U (en) * | 2017-04-14 | 2018-03-16 | 中国石油化工股份有限公司 | Burn formula hydrogen manufacturing conversion furnace in a kind of bottom based on double tube reactor |
| CN108127218A (en) * | 2017-12-13 | 2018-06-08 | 合肥通用机械研究院 | Ethylene cracking tube welding repair method after a kind of military service |
| CN208703352U (en) * | 2018-08-31 | 2019-04-05 | 大连环新精密特钢股份有限公司 | Heat-treatment furnace pipe connection |
-
2019
- 2019-07-03 CN CN201910596153.XA patent/CN110421236B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2796823Y (en) * | 2005-04-18 | 2006-07-19 | 王德瑞 | Furnace tube of heat exchange type convertor |
| JP2007075867A (en) * | 2005-09-15 | 2007-03-29 | Fukuda Metal Foil & Powder Co Ltd | Ni BRAZING FILLER METAL ALLOY |
| CN102764937A (en) * | 2011-05-06 | 2012-11-07 | 浦杰 | Welding production line of alloy furnace tube and tube bundle |
| JP2017061748A (en) * | 2015-09-25 | 2017-03-30 | 日新製鋼株式会社 | Ferritic stainless steel for tube |
| CN207102559U (en) * | 2017-04-14 | 2018-03-16 | 中国石油化工股份有限公司 | Burn formula hydrogen manufacturing conversion furnace in a kind of bottom based on double tube reactor |
| CN207091476U (en) * | 2017-08-19 | 2018-03-13 | 江苏标新工业有限公司 | A kind of special-shaped boiler tube annealing device |
| CN108127218A (en) * | 2017-12-13 | 2018-06-08 | 合肥通用机械研究院 | Ethylene cracking tube welding repair method after a kind of military service |
| CN208703352U (en) * | 2018-08-31 | 2019-04-05 | 大连环新精密特钢股份有限公司 | Heat-treatment furnace pipe connection |
Non-Patent Citations (3)
| Title |
|---|
| 于建平等: "制氢转化炉管焊接质量控制 ", 《石油化工设备》 * |
| 俞春尧等: "制氢转化炉炉管的修复 ", 《压力容器》 * |
| 马春蓉: "Cr9 Mo炉管的现场焊接工艺 ", 《化工建设工程》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112846562A (en) * | 2020-12-31 | 2021-05-28 | 东方电气(广州)重型机器有限公司 | Welding seam structure, shell assembly and shell assembly manufacturing method |
| CN114433982A (en) * | 2022-02-23 | 2022-05-06 | 鲁西工业装备有限公司 | Welding process for high-temperature cast steel furnace tube |
| CN115008049A (en) * | 2022-04-28 | 2022-09-06 | 广船国际有限公司 | Welding method of large-gap ultra-thick plate and container |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110421236B (en) | 2021-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110421236A (en) | A kind of military service deterioration Conversion Furnace Tubes in Hydrogen Plants welding repair method | |
| EP2546020B1 (en) | Laser/arc hybrid welding method and method for producing welded member using same | |
| TWI518184B (en) | Welding process and corrosion-resistant filler alloy and consumables therefor | |
| WO2017079996A1 (en) | Method for depositing stainless steel on low-alloy content steel base material using strip electrode by submerged arc process | |
| KR20110126654A (en) | Spark plug and process for producing same | |
| JP4995131B2 (en) | Ferritic heat-resistant steel and heat-resistant structure with excellent creep characteristics in weld heat-affected zone | |
| JP2011136344A (en) | Method of repairing gas turbine member and the gas turbine member | |
| CN108817620A (en) | The welding method of stainless sheet steel | |
| CN103243242A (en) | High-temperature alloy turbine blade repair material and repair process using same | |
| CN110042334A (en) | Life-prolonging method based on the Crystal Nickel-based Superalloy blade that heat treatment is repaired | |
| CN109693026A (en) | A kind of combination overlaying method for outer circle large area stellite hardfacing | |
| US8075957B2 (en) | Method of preventing corrosion degradation using Ni or Ni-alloy plating | |
| CN111331315B (en) | Ethylene cracking furnace tube welding repair method | |
| CN110405344A (en) | The gas hole defect suppressing method of the electric arc combined welding of high-strength steel laser-MIG | |
| CN102259241A (en) | Filler wire for fusion welding of low activation martensitic steel and use method thereof | |
| CN109175656A (en) | A kind of method that electron beam frit repairs high-strength steel defect | |
| CN101147997A (en) | Cobalt-less material 616 argon arc-welding built-up welding technology | |
| CN108015445A (en) | Microalloying connection method and microalloying connection structure | |
| JP5316320B2 (en) | ERW steel pipe manufacturing method with excellent weld quality | |
| JPWO2015068227A1 (en) | Turbine blade and method for manufacturing the same | |
| CN108857065A (en) | A kind of welding method of nuclear steam generator | |
| KR100663204B1 (en) | Method for curing of weld defects in ni-based superalloy components for gas turbine | |
| CN88100515A (en) | Improve the selected chromium-molybdenum modified form steel alloy hot properties and the method for weldability | |
| CN106736233B (en) | The method repaired under electrolysis rifled shell strong magnetic field circumstance | |
| CN110091030A (en) | The welding procedure of heating furnace pipeline steel alloy |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |