CN112846463A - Method for welding SA-213S30432 material membrane type tube panel - Google Patents
Method for welding SA-213S30432 material membrane type tube panel Download PDFInfo
- Publication number
- CN112846463A CN112846463A CN202110023153.8A CN202110023153A CN112846463A CN 112846463 A CN112846463 A CN 112846463A CN 202110023153 A CN202110023153 A CN 202110023153A CN 112846463 A CN112846463 A CN 112846463A
- Authority
- CN
- China
- Prior art keywords
- welding
- tube panel
- type tube
- membrane type
- flat steel
- 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
Images
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
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
- B23K9/1735—Arc welding or cutting making use of shielding gas and of a consumable electrode making use of several electrodes
-
- 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
-
- 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
- B23K9/24—Features related to electrodes
- B23K9/28—Supporting devices for electrodes
-
- 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
- B23K9/32—Accessories
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
A welding method for a membrane type tube panel made of SA-213S30432 relates to a welding method and aims to solve the problems that the SA-213S30432 membrane type tube panel is large in welding heat crack tendency and restraint stress, risks caused by welding cracks are increased, the thermal conductivity of stainless steel is poor, the thermal expansion coefficient is large, and welding is easy to deform. The invention comprises the following steps: s1, horizontally arranging a plurality of pipes made of SA-213S30432 and flat steel according to the layout of a pipe panel, and then equipping a plurality of pulse gas shielded welding power supplies; s2, arranging a plurality of welding guns, wherein each welding gun is connected with a pulse consumable electrode gas shielded welding power supply, the welding guns are uniformly arranged on the upper side and the lower side of the pipe and the flat steel, and each welding gun points to the joint of the pipe and the flat steel; and S3, carrying out uniform speed welding on the pipe and the flat steel by adopting ER308LSi solid gas shielded welding wires. The welding seam of the invention is formed evenly and fully, is in smooth transition with the parent metal, has no defects, adopts upper and lower welding guns to weld simultaneously, and has small deformation after welding.
Description
Technical Field
The invention relates to a welding method, in particular to a welding method for a boiler membrane type tube panel.
Background
SA-213S30432 is a stainless steel alloy which is obtained by adding a proper amount of elements such as Cu, Nb and N on the basis of SA-213 TP304H, reduces the content of Mn to obtain excellent high-temperature strength, plasticity and corrosion resistance, and is widely applied to high-temperature heating surfaces such as high-parameter boiler superheaters, reheaters and the like. At present, the high-temperature heating surface made of the material is mostly in a coiled pipe layout mode, and a membrane type tube panel structure is not applied yet.
The SA-213S30432 stainless steel contains high Cr, Ni and other alloy components, has a large welding thermal crack tendency, is dense in welding seams of the membrane type tube panel, has large constraint stress, increases risks caused by welding cracks, has poor thermal conductivity and large thermal expansion coefficient, is easy to deform during welding, and does not develop a mature SA-213S30432 membrane type tube panel welding manufacturing process in the boiler industry at present.
Disclosure of Invention
The invention provides a method for welding a SA-213S30432 membrane type tube panel, which aims to solve the problems that the SA-213S30432 membrane type tube panel has a larger tendency of welding thermal cracks, large constraint stress, increased risk of welding cracks, poor thermal conductivity of stainless steel, large thermal expansion coefficient and high possibility of deformation during welding.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a method for welding a film type tube panel made of SA-213S30432 materials comprises the following steps:
s1, horizontally placing a plurality of pipes and flat steel according to the pipe screen layout, and then equipping a plurality of pulse gas metal arc welding power supplies;
s2, arranging a plurality of welding guns, wherein each welding gun is connected with a pulse consumable electrode gas shielded welding power supply, the welding guns are uniformly arranged on the upper side and the lower side of the pipe and the flat steel, and each welding gun points to the joint of the pipe and the flat steel;
s3, adopting ER308LSi solid gas shield welding wires to weld the pipe and the flat steel at a constant speed, wherein the welding speed is 600-750 mm/min, the welding current is 170-220A, the welding voltage is 23-28V, the dry elongation of the welding wires is 15-25 mm, the protective gas is argon and carbon dioxide mixed gas, and the flow is 20-25L/min.
Preferably, the welding speed is 700 mm/min.
Preferably, the upper gun welding current is 205A, and the voltage is 26V; the gun current was 180A and the voltage was 24V.
Preferably, the volume ratio of argon to carbon dioxide in the protective gas is 95% of the total volume of argon.
Preferably, the gas flow is 22L/min.
Preferably, the welding gun rake angle is 10-20 degrees.
Preferably, the welding gun side inclination angle is 18-28 degrees.
Preferably, the flat steel material is austenitic stainless steel.
Compared with the prior art, the invention has the following beneficial effects:
the pulse gas shield welding power supply is arranged, so that stable injection transition is realized on the premise of ensuring a lower heat input level, and sufficient fusion depth is ensured. The ER308LSi solid gas-shielded welding wire is selected, and due to the addition of Si element, the fluidity of a molten pool is good, the wettability is strong, and the welding line which is molded uniformly and fully and is in smooth transition with the parent metal can be obtained while the strength and the component matching of the welding line and the parent metal are ensured. The tube panel is welded by the upper gun and the lower gun simultaneously, so that welding deformation caused by nonuniform heating of the tube panel is avoided. The welding seam welded by the method is beautiful in shape and free of defects.
Drawings
FIG. 1 is a side view of a tube panel in positional relationship to a welding gun;
FIG. 2 is a front view of the tube panel in relation to the weld location;
FIG. 3 is a top view of a tube panel in positional relationship to a welding gun;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
fig. 5 is a sectional view B-B of fig. 3.
Detailed Description
The invention will be described in further detail below with reference to the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation is given, but the scope of the present invention is not limited to the following embodiments.
Example 1: the embodiment is described below with reference to fig. 1 to 5, and relates to a method for welding a film type tube panel made of SA-213S30432 material, which includes the following steps:
s1, horizontally placing a plurality of pipes (1) and flat steel (2) according to the pipe screen layout, and then equipping a plurality of pulse gas metal arc welding power supplies;
s2, arranging a plurality of welding guns (3), wherein each welding gun (3) is connected with a pulse consumable electrode gas shielded welding power supply, the welding guns (3) are arranged on the upper side and the lower side of the pipe (1) and the flat steel (2), each welding gun points to the joint of the pipe (1) and the flat steel (2), and the welding guns are arranged in an upper row and a lower row on the upper surface and the lower surface of the tube panel and are used for welding at the same time, so that the welding deformation caused by uneven heating of the tube panel is avoided;
s3, adopting ER308LSi solid gas shielded welding wires to weld the pipe (1) and the flat steel (2) at a constant speed, wherein the welding speed is 600-750 mm/min, the welding current is 170-220A, the welding voltage is 23-28V, the dry elongation of the welding wires is 15-25 mm, the protective gas is argon and carbon dioxide mixed gas, and the flow rate is 20-25L/min.
The tube (1) and the flat steel (2) can be placed on a roller conveyor during tube panel welding, the tube and the flat steel are axially fed along the tube (1) during welding, and the welding gun (3) is fixed differently to achieve welding of the tube panel. Or the pipe (1) and the flat steel (2) can be fixed differently, and a plurality of welding guns (3) can simultaneously move along the axial direction of the pipe (1) to weld the pipe panel.
Optionally, the welding speed is 700 mm/min.
Optionally, the upper gun welding current is 205A, and the voltage is 26V; the gun current was 180A and the voltage was 24V.
In order to ensure stable jet flow transition, control welding spatter, ensure electric arc stability and prevent welding seam recarburization, the volume ratio of argon to carbon dioxide in the protective gas is that the argon accounts for 95% of the total volume. Selecting high content Ar (argon) and proper amount of CO2The proportion of protective gas of (carbon dioxide), higher argon gas is helpful for maintaining jet transition of electric arc and stabilizing combustion to reduce welding spatter, and proper amount of CO is added2Ensuring the energy and the stiffness of the electric arc, improving the wettability of a molten pool, preventing the electric arc from drifting to cause undercut, and improving the characteristics of the electric arc and the formation of a welding seam.
Optionally, the gas flow rate is 22L/min.
Optionally, the forward inclination angle alpha of the welding gun (3) is 10-20 degrees.
Optionally, the roll angle beta of the welding gun (3) is 18-28 degrees.
The flat steel (2) is made of austenitic stainless steel, and 304 stainless steel is adopted in the flat steel (2) in the embodiment.
For the SA-213S30432 stainless steel film type tube panel, because the alloy contents of Cr, Ni, Cu, Nb and the like are high, the tendency of generating welding heat cracks is larger, a welding material which is matched with the components and the performance of a base material and has good weldability is selected, in the embodiment, because the selected ER308LSi welding material is added with Si element, the good crack resistance is considered, the molten iron fluidity is better, the welding seam is uniformly spread, particularly for the downward gun welding position, the molten pool with good wettability and small surface tension is more favorable for overcoming the gravity falling tendency to enable the welding seam to be fully combined with the base material, and the forming is good. Due to poor heat conductivity and large thermal expansion coefficient of stainless steel, heat input needs to be strictly controlled to ensure welding quality, and compared with a conventional carbon steel or alloy steel membrane type tube panel, the welding current and voltage of the SA-213S30432 stainless steel membrane type tube panel need to be properly reduced, and the welding speed needs to be properly accelerated. The pipe panel is heated uniformly, so that the pipe panel is deformed easily and local stress concentration is caused to induce cracks to generate.
While the invention has been described in detail and with reference to specific examples thereof, it will be understood by those skilled in the art that the foregoing examples are for the purpose of illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (8)
1. A method for welding a film type tube panel made of SA-213S30432 is characterized by comprising the following steps: the method comprises the following steps:
s1, horizontally placing a plurality of pipes (1) made of SA-213S30432 and flat steel (2) according to the layout of a pipe screen, and then equipping a plurality of pulse gas metal arc welding power supplies;
s2, arranging a plurality of welding guns (3), wherein each welding gun (3) is connected with a pulse consumable electrode gas shielded welding power supply, the welding guns (3) are arranged on the upper side and the lower side of the pipe (1) and the flat steel (2), and each welding gun points to the joint of the pipe (1) and the flat steel (2);
s3, adopting ER308LSi solid gas shielded welding wires to weld the pipe (1) and the flat steel (2) at a constant speed, wherein the welding speed is 600-750 mm/min, the welding current is 170-220A, the welding voltage is 23-28V, the dry elongation of the welding wires is 15-25 mm, the protective gas is argon and carbon dioxide mixed gas, and the flow rate is 20-25L/min.
2. The method for welding the SA-213S30432 material membrane type tube panel according to the claim 1, is characterized in that: the welding speed is 700 mm/min.
3. The method for welding the SA-213S30432 material membrane type tube panel according to the claim 1, is characterized in that: the welding current of the upper gun is 205A, and the voltage is 26V; the gun current was 180A and the voltage was 24V.
4. The method for welding the SA-213S30432 material membrane type tube panel according to the claim 1, is characterized in that: the volume ratio of argon to carbon dioxide in the protective gas is 95 percent of the total volume of argon.
5. The method for welding the SA-213S30432 material membrane type tube panel according to the claim 1, is characterized in that: the gas flow rate was 22L/min.
6. The method for welding the SA-213S30432 material membrane type tube panel according to the claim 1, is characterized in that: the welding gun (3) has a forward inclination angle (alpha) of 10-20 degrees.
7. The method for welding the SA-213S30432 material membrane type tube panel according to the claim 1 or 6, characterized in that: the side inclination angle (beta) of the welding gun (3) is 18-28 degrees.
8. The method for welding the SA-213S30432 material membrane type tube panel according to the claim 1, is characterized in that: the flat steel (2) is made of austenitic stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110023153.8A CN112846463B (en) | 2021-01-08 | 2021-01-08 | Method for welding SA-213S30432 material membrane type tube panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110023153.8A CN112846463B (en) | 2021-01-08 | 2021-01-08 | Method for welding SA-213S30432 material membrane type tube panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112846463A true CN112846463A (en) | 2021-05-28 |
| CN112846463B CN112846463B (en) | 2022-06-07 |
Family
ID=76005383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110023153.8A Active CN112846463B (en) | 2021-01-08 | 2021-01-08 | Method for welding SA-213S30432 material membrane type tube panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112846463B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113814523A (en) * | 2021-09-24 | 2021-12-21 | 盛振晗 | Automatic arc welding equipment for metal materials |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102649202A (en) * | 2011-02-23 | 2012-08-29 | 宝山钢铁股份有限公司 | Stainless steel welding wire |
| US20150128881A1 (en) * | 2013-11-14 | 2015-05-14 | Chicago Tube and Iron Company | Method for manufacturing boiler water walls and boiler with laser/arc welded water walls |
| CN106378517A (en) * | 2016-11-30 | 2017-02-08 | 东方电气集团东方锅炉股份有限公司 | Welding technology of flat steel fillet welds of membrane wall tube panel different steel joint position |
| CN106425326A (en) * | 2016-11-30 | 2017-02-22 | 东方电气集团东方锅炉股份有限公司 | Bainite steel or martensite steel membrane type wall tube panel bending method |
| CN106862787A (en) * | 2017-03-30 | 2017-06-20 | 烟台国冶冶金水冷设备有限公司 | The process of the motor-driven welder nickel-base alloy tube panel of membrane wall |
| 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 |
| CN108326397A (en) * | 2018-02-02 | 2018-07-27 | 南通港华锅炉有限公司 | A kind of welding procedure of boiler dividing waterwall |
| CN109623104A (en) * | 2018-10-26 | 2019-04-16 | 上海锅炉厂有限公司 | A kind of T91 panelized-tube-wall section scene counterpart mounting process method |
-
2021
- 2021-01-08 CN CN202110023153.8A patent/CN112846463B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102649202A (en) * | 2011-02-23 | 2012-08-29 | 宝山钢铁股份有限公司 | Stainless steel welding wire |
| US20150128881A1 (en) * | 2013-11-14 | 2015-05-14 | Chicago Tube and Iron Company | Method for manufacturing boiler water walls and boiler with laser/arc welded water walls |
| CN106378517A (en) * | 2016-11-30 | 2017-02-08 | 东方电气集团东方锅炉股份有限公司 | Welding technology of flat steel fillet welds of membrane wall tube panel different steel joint position |
| CN106425326A (en) * | 2016-11-30 | 2017-02-22 | 东方电气集团东方锅炉股份有限公司 | Bainite steel or martensite steel membrane type wall tube panel bending 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 |
| CN106862787A (en) * | 2017-03-30 | 2017-06-20 | 烟台国冶冶金水冷设备有限公司 | The process of the motor-driven welder nickel-base alloy tube panel of membrane wall |
| CN108326397A (en) * | 2018-02-02 | 2018-07-27 | 南通港华锅炉有限公司 | A kind of welding procedure of boiler dividing waterwall |
| CN109623104A (en) * | 2018-10-26 | 2019-04-16 | 上海锅炉厂有限公司 | A kind of T91 panelized-tube-wall section scene counterpart mounting process method |
Non-Patent Citations (1)
| Title |
|---|
| 张英等: "在锅炉水冷壁焊接生产中ＭＰＭ焊机的应用", 《锅炉制造》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113814523A (en) * | 2021-09-24 | 2021-12-21 | 盛振晗 | Automatic arc welding equipment for metal materials |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112846463B (en) | 2022-06-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101320469B1 (en) | Metal-core gas metal arc welding of ferrous steels with noble gas shielding | |
| EP0523615B1 (en) | Method of welding nickel or nickel alloy products | |
| CN103521886B (en) | For the welding method of stainless steel single face welding and double face shaping | |
| CN104722896B (en) | A kind of Lincoln weld welding method of nickel-base alloy | |
| CN106624403A (en) | Bimetallic composite plate welding method | |
| CN103118827B (en) | Complex welding method and composite welding welding torch | |
| CN107717189A (en) | A kind of three wire bond rifles and multi-wire submerged-arc soldering method | |
| CN102744499B (en) | Double-side double-arc welding process for root layer of pipeline | |
| JP2004306084A (en) | Composite welding method of laser welding and arc welding | |
| CN111230262A (en) | Method for controlling and correcting welding deformation of thin plate | |
| CN112171016B (en) | Austenitic stainless steel NBG welding process | |
| CN112846463B (en) | Method for welding SA-213S30432 material membrane type tube panel | |
| CN108296584B (en) | Titanium-steel plate butt joint double-heat-source low-heat-input brazing method | |
| CN105397249B (en) | A kind of double DC pulse composite arc welding methods of low_input_power of thin metallic tubd | |
| CN107999962A (en) | A kind of method for laser welding of double CMT/ mariages CMT auxiliary | |
| CN106425018B (en) | Welding method for 9% Ni steel butt welding bead of LNG low-temperature storage tank | |
| CN109108466A (en) | Cut deal square groove laser and electric arc combine welding method | |
| CN109396612A (en) | A kind of UNS N08825 nickel-base material pipeline solid core welding wire consumable electrode pulse MIG welding procedure | |
| CN112139690A (en) | Girth welding method adopting P + T and ceramic pad | |
| JP2007260692A (en) | Submerged arc welding method of thick steel plate | |
| CN105195866B (en) | A kind of full-automatic root bead method of the pipe end of composite bimetal pipe | |
| CN102744505A (en) | Automatic five-wire submerged arc welding method for thick-wall welded pipes | |
| CN113042895B (en) | Welding method of nickel steel composite structure | |
| CN109759681A (en) | A kind of Nickel-Based Steel method for welding pipeline | |
| CN101602131A (en) | The gas welding method of ultra-thin stainless steel workpieces |
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 |