CN104801820A - TP347H tube and 1 Cr18Ni9Ti tube row welding technology - Google Patents
TP347H tube and 1 Cr18Ni9Ti tube row welding technology Download PDFInfo
- Publication number
- CN104801820A CN104801820A CN201410397442.4A CN201410397442A CN104801820A CN 104801820 A CN104801820 A CN 104801820A CN 201410397442 A CN201410397442 A CN 201410397442A CN 104801820 A CN104801820 A CN 104801820A
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- China
- Prior art keywords
- welding
- tp347h
- pipe
- wire
- 1cr18ni9ti
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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
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
-
- 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
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/362—Selection of compositions of fluxes
-
- 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
- B23K9/23—Arc welding or cutting taking account of the properties of the materials to be welded
- B23K9/232—Arc welding or cutting taking account of the properties of the materials to be welded of different metals
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention relates to a TP347H tube and 1 Cr18Ni9Ti tube row welding technology. The welding technology comprises the steps of (1) polishing rust and oil on TP347H tubes and flat steel; (2) welding material preparation: preparing welding wires and flux and performing baking before the flux is used; (3) spot welding before welding: A132 welding wires are used for electric welding of the TP347H tubes and flat steel, performing baking on the welding wires at the temperature ranging from 250 DEG C to 400 DEG C for 0.5h to 1.5h, and putting the welding wires in a welding wire insulation cylinder to be set aside; (4) tube row welding: performing welding in the condition of the 280A-320A welding current, 26V-28V welding voltage and 900mm/min-1000mm/min; (5) detection: performing 100% PT detection on the welding seams and providing qualification flaw detection reports. The welding technology is simple and convenient to operate and capable of solving the problem of the difficulty in welding between the TP347H tubes and flat steel effectively.
Description
Technical field
The present invention relates to boiler processing technique field, relate to a kind of welding of film-type tube bank specifically, especially the welding procedure of TP347H pipe and 1Cr18Ni9Ti band steel film-type tube bank.
Background technology
Film-type tube bank is the main pressure-containing parts of boiler furnace, TP347H stainless steel is owing to containing stabilizing element Nb, its intergranular corrosion resistance and Nai Duo sulfuric acid intergranular stress corrosion functional, in the corrosive mediums such as acid, alkali, salt, its anti-corrosion row is close with the 18-8 austenitic stainless steel containing Ti, this steel grade has higher elevated temperature strength and better high temperature oxidation resistance than 316 cordings, so Chang Zuowei refractory steel uses again, for the heat exchanger of large-sized boiler superheater tube, reheater tube, jet chimney and petrochemical industry.Oxidation resistance temperature for allowing in boiler tube is 750 DEG C, due to the stainless this characteristic of TP347H and the difficulty of welding very between 1Cr18Ni9Ti.
Summary of the invention
In order to solve the problem, the invention provides a kind of welding procedure that can make a kind of film-type tube bank being easy between TP347H pipe with 1Cr18Ni9Ti band steel weld.
In order to achieve the above object, the present invention is achieved by the following technical solutions:
The present invention is that welding procedure arranged by TP347H pipe and 1Cr18Ni9Ti pipe, and described welding procedure comprises the steps:
(1) preweld cleaning: before welding, the iron rust on TP347H pipe, band steel, greasy dirt are polished to exposing metallic luster;
(2) welding material prepares: prepare welding wire and solder flux, and solder flux cures before using, and stoving temperature is 300-450 DEG C, and the time of curing is 0.5-3h;
(3) spot welding before weldering: band steel and the electric welding of TP347H pipe use A132 welding rod, welding rod needs to cure, and baking temperature is at 250-400 DEG C, and the time of baking and banking up with earth is 0.5-1.5h, is then placed in electrode dryer by welding rod stand-by;
(4) pipe row welding: weld under the condition of welding current 280-320A, voltage 26-28V and speed of welding 900-1000mm/min;
(5) detect: after welding, butt welded seam carries out 100%PT detection and provides qualified flaw detection report.
Preferred: in described step (2), the H0Cr21Ni10 welding wire for submerged-arc welding of welding wire to be diameter be 1-2mm, solder flux is CHF601 high-speed welding flux.
Preferred: in described step (3), the diameter of welding rod is 2.5-4mm.
Preferred: in step (5), Product checking is defective, need to adopt manual electric arc welding repair welding to the position of repair welding, welding rod is A132, gage of wire is 3.2mm, again carries out 100%PT detection to repair welding position qualified, and provide qualified flaw detection report after repair welding completes.
The invention has the beneficial effects as follows: the stain on pipe and band steel will first polish off by the present invention, then H0Cr21Ni10 welding wire for submerged-arc welding and CHF601 high-speed welding flux is used to weld, CHF601 is the special alkalescent sintered flux of soldering stainless steel and heat resisting steel, basicity about 1.8, in light green color spheric granules, granularity is 10 ~ 60 orders, direct current welds, welding wire connects positive pole, deposited metal has and does not increase silicon, not carburetting, the features such as chromium nickel scaling loss is little, appearance of weld is attractive in appearance, welding point has good anti intercrystalline corrosion performance, H0Cr20Ni10 welding wire is coordinated to use, welding effect is better, wire feed is smooth and easy, arc stability, be shaped attractive in appearance, splash few, welding wire and solder flux with the use of, good processing performance can be obtained, spot welding uses A132 welding rod, A132 is the Cr19Ni10Nb stainless steel electrode that titanium-calcium type coating contains Nb stabilizing agent, there is excellent anti intercrystalline corrosion performance and good mechanical performance, there is excellent welding procedure and porosity resistance ability, coating is resistance to rubescent, cracking resistance, can AC/DC, select suitable electric current, voltage and speed of welding are welded, solve the defect of original welding difficulty.
Present invention process is simple, easy to operate, effectively can improve the problem of welding difficulty between TP347H pipe with 1Cr18Ni9Ti band steel.
Detailed description of the invention
In order to deepen the understanding of the present invention, be described in further detail the present invention below in conjunction with embodiment, this embodiment, only for explaining the present invention, not forming protection scope of the present invention and limiting.
As shown in the Examples, the present invention is that welding procedure arranged by TP347H pipe and 1Cr18Ni9Ti pipe, and described welding procedure comprises the steps:
(1) preweld cleaning: before welding, the iron rust on TP347H pipe, band steel, greasy dirt being polished to exposing metallic luster, facilitating the welding in later stage, preventing from causing due to iron rust and greasy dirt and can not welding;
(2) welding material prepares: prepare welding wire and solder flux, and solder flux cures before using, and stoving temperature is 300-450 DEG C, the time of curing is 0.5-3h, in described step (2), the H0Cr21Ni10 welding wire for submerged-arc welding of welding wire to be diameter be 1-2mm, solder flux is CHF601 high-speed welding flux;
(3) spot welding before weldering: band steel and the electric welding of TP347H pipe use A132 welding rod, and the diameter of middle welding rod is 2.5-4mm, welding rod needs to cure, baking temperature is at 250-400 DEG C, the time of baking and banking up with earth is 0.5-1.5h, is then placed in electrode dryer by welding rod stand-by, ready access upon use;
(4) pipe row welding: weld under the condition of welding current 280-320A, voltage 26-28V and speed of welding 900-1000mm/min;
(5) detect: after welding, butt welded seam carries out 100%PT detection and provides qualified flaw detection report, in step (5), Product checking is defective, need to adopt manual electric arc welding repair welding to the position of repair welding, welding rod is A132, gage of wire is 3.2mm, again carries out 100%PT detection to repair welding position qualified, and provide qualified flaw detection report after repair welding completes.
Embodiment one
Welding procedure of the present invention explained by following material:
Material: SA-213 TP347H pipe, Φ 57*5, L=2000mm/ section, 2 sections; ICr18Ni9Ti band steel, 6*13, L=2000mm/ section, 1 section.
TP347H pipe and 1Cr18Ni9Ti band steel film-type tube bank welding procedure, described welding procedure comprises the steps:
(1) preweld cleaning: before welding, the iron rust on TP347H pipe, band steel, greasy dirt are polished to exposing metallic luster;
(2) welding material prepares: prepare welding wire and solder flux, the H0Cr21Ni10 welding wire for submerged-arc welding of welding wire to be diameter be 1.6mm, and solder flux is CHF601 high-speed welding flux, and solder flux cures before using, and stoving temperature is 350-400 DEG C, and the time of curing is 1-2h;
(3) spot welding before weldering: band steel and the electric welding of TP347H pipe use A132 welding rod, and the diameter of welding rod is 3.2mm, welding rod needs to cure, and baking temperature is at 300-350 DEG C, and the time of baking and banking up with earth is 1h, is then placed in electrode dryer by welding rod stand-by;
(4) pipe row welding: weld under the condition of welding current 280-320A, voltage 26-28V and speed of welding 900-1000mm/min;
(5) detect: after welding, butt welded seam carries out 100%PT detection and provides qualified flaw detection report, Product checking is defective, need to adopt manual electric arc welding repair welding to the position of repair welding, welding rod is A132, gage of wire is 3.2mm, again 100%PT detection is carried out to repair welding position after repair welding completes qualified, and provide qualified flaw detection report.
Stain on pipe and band steel will first polish off by the present invention, then H0Cr21Ni10 welding wire for submerged-arc welding and CHF601 high-speed welding flux is used to weld, CHF601 is the special alkalescent sintered flux of soldering stainless steel and heat resisting steel, basicity about 1.8, in light green color spheric granules, granularity is 10 ~ 60 orders, direct current welds, welding wire connects positive pole, deposited metal has and does not increase silicon, not carburetting, the features such as chromium nickel scaling loss is little, appearance of weld is attractive in appearance, welding point has good anti intercrystalline corrosion performance, H0Cr20Ni10 welding wire is coordinated to use, welding effect is better, wire feed is smooth and easy, arc stability, be shaped attractive in appearance, splash few, welding wire and solder flux with the use of, good processing performance can be obtained, spot welding uses A132 welding rod, A132 is the Cr19Ni10Nb stainless steel electrode that titanium-calcium type coating contains Nb stabilizing agent, there is excellent anti intercrystalline corrosion performance and good mechanical performance, there is excellent welding procedure and porosity resistance ability, coating is resistance to rubescent, cracking resistance, can AC/DC, select suitable electric current, voltage and speed of welding are welded, solve the defect of original welding difficulty.
Present invention process is simple, easy to operate, effectively can improve the problem of welding difficulty between TP347H pipe with 1Cr18Ni9Ti band steel.
Claims (4)
- Welding procedure arranged by 1.TP347H pipe and 1Cr18Ni9Ti pipe, it is characterized in that: described welding procedure comprises the steps:(1) preweld cleaning: before welding, the iron rust on TP347H pipe, band steel, greasy dirt are polished to exposing metallic luster;(2) welding material prepares: prepare welding wire and solder flux, and solder flux cures before using, and stoving temperature is 300-450 DEG C, and the time of curing is 0.5-3h;(3) spot welding before weldering: band steel and the electric welding of TP347H pipe use A132 welding rod, welding rod needs to cure, and baking temperature is at 250-400 DEG C, and the time of baking and banking up with earth is 0.5-1.5h, is then placed in electrode dryer by welding rod stand-by;(4) pipe row welding: weld under the condition of welding current 280-320A, voltage 26-28V and speed of welding 900-1000mm/min;(5) detect: after welding, butt welded seam carries out 100%PT detection and provides qualified flaw detection report.
- 2. welding procedure arranged by TP347H pipe and 1Cr18Ni9Ti pipe according to claim 1, it is characterized in that: in described step (2), and the H0Cr21Ni10 welding wire for submerged-arc welding of welding wire to be diameter be 1-2mm, solder flux is CHF601 high-speed welding flux.
- 3. welding procedure arranged by TP347H pipe and 1Cr18Ni9Ti pipe according to claim 1, it is characterized in that: in described step (3), the diameter of welding rod is 2.5-4mm.
- 4. welding procedure arranged by TP347H pipe and 1Cr18Ni9Ti pipe according to claim 1, it is characterized in that: in step (5), Product checking is defective, need to adopt manual electric arc welding repair welding to the position of repair welding, welding rod is A132, gage of wire is 3.2mm, again carries out 100%PT detection to repair welding position qualified, and provide qualified flaw detection report after repair welding completes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410397442.4A CN104801820A (en) | 2014-08-14 | 2014-08-14 | TP347H tube and 1 Cr18Ni9Ti tube row welding technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410397442.4A CN104801820A (en) | 2014-08-14 | 2014-08-14 | TP347H tube and 1 Cr18Ni9Ti tube row welding technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104801820A true CN104801820A (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410397442.4A Pending CN104801820A (en) | 2014-08-14 | 2014-08-14 | TP347H tube and 1 Cr18Ni9Ti tube row welding technology |
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| CN (1) | CN104801820A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105290579A (en) * | 2015-11-13 | 2016-02-03 | 江苏绿叶锅炉有限公司 | Single-layer and single-pass pipe row welding technology of ultra-supercritical boiler high-temperature screen type overheater |
| CN105290577A (en) * | 2015-11-13 | 2016-02-03 | 江苏绿叶锅炉有限公司 | Pipe row welding technology based on ultra-supercritical boiler high-temperature screen type overheater |
| CN106181091A (en) * | 2016-08-17 | 2016-12-07 | 浙江特富锅炉有限公司 | A kind of boiler welding process method |
| CN106964881A (en) * | 2017-03-07 | 2017-07-21 | 上海锅炉厂有限公司 | Supercritical CFB Boiler high temperature pendant superheater stainless steel buried arc welding method |
| CN110253111A (en) * | 2019-07-12 | 2019-09-20 | 中船桂江造船有限公司 | A kind of 1cr18ni steel plate+aluminium aluminum steel composite material welding method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105290579A (en) * | 2015-11-13 | 2016-02-03 | 江苏绿叶锅炉有限公司 | Single-layer and single-pass pipe row welding technology of ultra-supercritical boiler high-temperature screen type overheater |
| CN105290577A (en) * | 2015-11-13 | 2016-02-03 | 江苏绿叶锅炉有限公司 | Pipe row welding technology based on ultra-supercritical boiler high-temperature screen type overheater |
| CN106181091A (en) * | 2016-08-17 | 2016-12-07 | 浙江特富锅炉有限公司 | A kind of boiler welding process method |
| CN106181091B (en) * | 2016-08-17 | 2018-03-09 | 浙江特富锅炉有限公司 | A kind of boiler welding process method |
| CN106964881A (en) * | 2017-03-07 | 2017-07-21 | 上海锅炉厂有限公司 | Supercritical CFB Boiler high temperature pendant superheater stainless steel buried arc welding method |
| CN110253111A (en) * | 2019-07-12 | 2019-09-20 | 中船桂江造船有限公司 | A kind of 1cr18ni steel plate+aluminium aluminum steel composite material welding method |
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Application publication date: 20150729 |
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