CN115945764A - Method for controlling high-strength steel dissimilar welding seam forming by adopting special groove-twin-wire MAG welding - Google Patents
Method for controlling high-strength steel dissimilar welding seam forming by adopting special groove-twin-wire MAG welding Download PDFInfo
- Publication number
- CN115945764A CN115945764A CN202211678092.XA CN202211678092A CN115945764A CN 115945764 A CN115945764 A CN 115945764A CN 202211678092 A CN202211678092 A CN 202211678092A CN 115945764 A CN115945764 A CN 115945764A
- Authority
- CN
- China
- Prior art keywords
- welding
- wire
- strength steel
- twin
- mag
- 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
- 238000003466 welding Methods 0.000 title claims abstract description 165
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 42
- 239000010959 steel Substances 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 6
- 239000000945 filler Substances 0.000 claims description 13
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 238000005498 polishing Methods 0.000 claims description 7
- 239000011324 bead Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 238000006356 dehydrogenation reaction Methods 0.000 claims description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 4
- 239000011229 interlayer Substances 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 229910000797 Ultra-high-strength steel Inorganic materials 0.000 abstract description 8
- 238000002844 melting Methods 0.000 abstract description 8
- 230000008018 melting Effects 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 4
- 230000007704 transition Effects 0.000 abstract description 2
- 230000004927 fusion Effects 0.000 abstract 1
- 239000010953 base metal Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000005253 cladding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a method for controlling the forming of a high-strength steel dissimilar welding seam by adopting special groove-twin-wire MAG welding, and relates to the field of ultrahigh-strength steel dissimilar welding. The invention aims to solve the problems of low welding efficiency, low joint bonding strength caused by deviation of a welding seam area to one side with low melting point and low strength and large structural property change gradient of the welding seam area in the conventional filling of the special welding monofilament of the ultrahigh-strength steel. The method comprises the following steps: on the basis of the V-shaped groove, a carbon arc gouging plane is used for grooving one side of a steel plate with higher strength so as to enable deposited metal amounts on two sides of a welding seam to be consistent, and welding wires with different material properties are adopted to respectively fill two sides of an ultrahigh-strength steel dissimilar plate so as to mitigate abrupt changes of mechanical properties of a welding seam area and a fusion area. The introduction of the two strength welding wires in the invention leads the grain structure and performance transition of the welding seam area to be more moderate, avoids the large gradient change of the performance structure of the joint and improves the use safety of the dissimilar welding joint. The invention is used for the heterogeneous connection of the ultra-high strength steel plates.
Description
Technical Field
The invention relates to the field of dissimilar welding of ultrahigh-strength steel.
Background
Nowadays, with the continuous development of the fields of diving, spaceflight, military protection and the like, new challenges are provided for the special steel smelting technology and process. The 35CrMnSiA is an ultra-high-strength protective steel plate with the tensile strength of more than 1850MPa, and has wide application prospect in the fields. However, in order to improve the material utilization rate, the structural design is more reasonable, and the connection of different materials is indispensable. However, compared with the common high-strength steel, the 35CrMnSiA has a finer grain structure and a higher melting point, and when the 35CrMnSiA is welded with Q550D, a welding seam is seriously biased to one side of the Q550D, so that the 35CrMnSiA is less molten, and the joint strength is seriously influenced.
In addition, the tensile strength and hardness of Q550D are greatly different from those of 35CrMnSiA, and the strength of deposited metal and the performances of steel plates on two sides are different to each other during monofilament filling, so that the mechanical property change gradient of each position of a welded joint is large, and large residual stress can be generated during solidification between tissues with large performance difference, the use safety of the joint is seriously influenced, particularly, when a medium plate is welded, the monofilament filling is low in welding efficiency, and the joint performance is also urgently required to be improved.
Disclosure of Invention
The invention provides a method for controlling the formation of a high-strength steel heterogeneous welding seam by adopting special groove-twin-wire MAG welding, which aims to solve the problems of low welding efficiency, low joint bonding strength caused by deviation of a welding seam area to one side with low melting point and low strength and large structural property change gradient of the welding seam area in the existing ultra-high-strength steel heterogeneous welding monofilament filling.
A method for controlling the forming of a high-strength steel dissimilar welding seam by adopting special groove-twin-wire MAG welding specifically comprises the following steps:
1. cleaning, polishing and beveling two high-strength steel plate pieces to be welded;
2. fixing the plate to be welded processed in the first step by using a clamp, adjusting the distance between two wires of an MAG welding gun and placing the MAG welding gun perpendicular to a weld bead;
3. setting MAG welding parameters for welding, wherein the first path is double-wire MAG welding, and the specific parameters are as follows: MAG welding current is 120-140A, welding voltage is 22-25V, welding speed is 450-500 mm/min, the included angle between two welding wires is 10-15 degrees, and the distance between the two welding wires is 11-15 mm;
the second welding is the welding of the single-wire swinging cover surface, and the specific parameters are as follows: MAG welding current is 90-110A, welding voltage is 19-21V, swing arc width is 18-23 mm, swing arc frequency is 0.8-1.5 hz, and welding speed is 200-300 mm/min;
4. and step three, naturally cooling after welding, and then performing dehydrogenation treatment to finish welding.
Further, in the first step, the high-strength steel plate pieces are Q550D and 35CrMnSiA respectively, and the thicknesses of the high-strength steel plate pieces are 20-25 mm.
Further, the groove on the Q550D side is a V-shaped groove, and a carbon arc air gouging is used for machining a half S-shaped groove with the height of 9-11 mm at the lower end of the V-shaped groove on the 30CrMnMoRe side on the basis of the V-shaped groove.
Further, in the first step, the angle of the V-shaped groove is 30-45 degrees.
Further, the polishing treatment in the step one is to polish the 20mm inner surfaces of the two sides of the groove to expose the metal surface, and remove rust and oil stains in the 50mm range of the area to be welded.
And further, in the third step, the Q550D side filler wire is JM58, and the 30CrMnMoRe side filler wire is ER140S-G.
Furthermore, the two welding wires have independent wire feeding mechanisms, the wire filling speed of JM58 is 100-150 cm/min, and the wire filling speed of ER140S-G is 150-200 cm/min.
Further, before the second welding, the interlayer temperature is controlled to be 100-150 ℃.
And further, in the third step, the second welding seam filler wire is ER120S-G, and the wire filling speed is 200-300 cm/min.
And further, in the third step, the second welding seam filler wire is ER120S-G, and the wire filling speed is 230-270 cm/min.
In order to solve the problem that the 35CrMnSiA side is difficult to deposit due to high melting point, a half S-shaped groove is processed by means of carbon arc gouging on the basis of the V-shaped notch on the side, and an ER140S-G welding wire with large heat input is adopted for filling. The introduction of the double-wire MAG welding not only solves the problem that the melting point of the cladding metal in the welding seam area is deviated to the side of Q550D with low melting point, but also leads the grain structure and the performance transition of the welding seam area to be more moderate by introducing two kinds of strength welding wires, avoids the large gradient change of the performance structure of the joint and improves the use safety of a dissimilar welding joint.
The invention has the beneficial effects that:
according to the invention, a half S + upper V-shaped groove is formed on one side of the high-melting-point high-strength 35CrMnSiA to increase the wire filling amount of the side. Compared with a conventional V-shaped groove, the thickness of a welded steel plate is reduced on the 35CrMnSiA side due to the phase change of the half S-shaped groove, so that the welded steel plate can be still melted through and filled with more welding materials under the condition that the heat input change is not large. In addition, compared with the simple increase of the heat input at one side with high melting point, the asymmetrical welding groove design ensures that the welding temperature field is not excessively complicated, the parameter control is simpler, and the burning-through of the base metal with low melting point is avoided.
The invention welds the first weld by introducing the twin-wire MAG. The double wire filling has a higher welding efficiency than the single wire filling, which is particularly evident when welding medium and thick plates. In the aspect of weld forming, steel grades with large monofilament welding strength difference often need to be swung to enable a weld zone to be symmetrical, and the swinging path and left and right residence time need to be adjusted according to the penetration thickness of the steel grades on two sides, so that the welding workload is increased; in the aspect of joint performance distribution, because the difference between the hardness and the strength of the Q550D and 35CrMnSiA base metals is large, the performance of the welding line zone cladding metal and the base metals on two sides are different by a certain amount due to the filling of a single welding wire, and the performance difference of each position of the joint is caused. And the adoption of the double-wire welding can optimize the production process, improve the welding production efficiency, simultaneously alleviate the abrupt change of the joint structure performance and play a role in homogenizing the welding seam.
The invention is used for the heterogeneous connection of the ultra-high strength steel plates.
Drawings
FIG. 1 is a schematic diagram of the first embodiment of using special groove-twin-wire MAG welding to control the formation of high-strength steel dissimilar welding seams; wherein 1 represents a Q550D steel plate, 2 represents 35CrMnSiA,3 represents a half S-shaped groove, 4 represents a double-wire spacing and included angle, 5 represents a JM58 welding wire, and 6 represents an ER140S-G welding wire;
FIG. 2 is a graph showing the hardness distribution of a special groove-twin-wire MAG welding control high-strength steel dissimilar weld and single-wire filling in the first embodiment, wherein 1 represents the first embodiment (twin-wire filling) and 2 represents the single-wire filling.
Detailed Description
The first specific implementation way is as follows: the method for controlling the forming of the high-strength steel dissimilar welding seam by adopting the special groove-double-wire MAG welding specifically comprises the following steps:
1. cleaning, polishing and beveling two high-strength steel plate pieces to be welded;
2. fixing the plate to be welded processed in the step one by using a clamp, adjusting the distance between two wires of an MAG welding gun and placing the MAG welding gun perpendicular to a welding bead;
3. setting MAG welding parameters to weld, wherein the first path is double-wire MAG welding, and the specific parameters are as follows: MAG welding current is 120-140A, welding voltage is 22-25V, welding speed is 450-500 mm/min, the included angle between two welding wires is 10-15 degrees, and the distance between the two welding wires is 11-15 mm;
the second welding is the welding of the single-wire swinging cover surface, and the specific parameters are as follows: MAG welding current is 90-110A, welding voltage is 19-21V, swing arc width is 18-23 mm, swing arc frequency is 0.8-1.5 hz, and welding speed is 200-300 mm/min;
4. and step three, naturally cooling after welding, and then performing dehydrogenation treatment to finish welding.
The second embodiment is as follows: the first difference between the present embodiment and the specific embodiment is: in the first step, the high-strength steel plate pieces are Q550D and 35CrMnSiA respectively, and the thicknesses of the high-strength steel plate pieces are 20-25 mm. The rest is the same as the first embodiment.
The third concrete implementation mode: the present embodiment differs from the first or second embodiment in that: step one, a groove at the Q550D side is a V-shaped groove, and a carbon arc air gouging is used for processing a half S-shaped groove with the height of 9-11 mm at the lower end of the V-shaped groove at the 30CrMnMoRe side on the basis of the V-shaped groove. The other is the same as in the first or second embodiment.
The fourth concrete implementation mode is as follows: the difference between this embodiment mode and one of the first to third embodiment modes is: step one, the processing angle of the V-shaped groove is 30-45 degrees. The others are the same as in one of the first to third embodiments.
The fifth concrete implementation mode: the difference between this embodiment and one of the first to fourth embodiments is: and step one, polishing the 20mm inner surfaces of the two sides of the groove to expose the metal surface, and removing rust and oil dirt in the 50mm range of the area to be welded. The other is the same as one of the first to fourth embodiments.
The sixth specific implementation mode: the difference between this embodiment and one of the first to fifth embodiments is: and step three, the Q550D side filler wire is JM58, and the 30CrMnMoRe side filler wire is ER140S-G. The other is the same as one of the first to fifth embodiments.
The seventh embodiment: the difference between this embodiment and one of the first to sixth embodiments is: the two welding wires have independent wire feeding mechanisms, the wire filling speed of JM58 is 100-150 cm/min, and the wire filling speed of ER140S-G is 150-200 cm/min. The rest is the same as one of the first to sixth embodiments.
The specific implementation mode is eight: the present embodiment differs from one of the first to seventh embodiments in that: and step three, controlling the interlayer temperature to be 100-150 ℃ before the second welding. The other is the same as one of the first to seventh embodiments.
The specific implementation method nine: the difference between this embodiment and the first to eighth embodiments is: and step three, the second welding seam filler wire is ER120S-G, and the wire filling speed is 200-300 cm/min. The rest is the same as the first to eighth embodiments.
The detailed implementation mode is ten: the present embodiment differs from one of the first to ninth embodiments in that: and step three, the second welding seam filler wire is ER120S-G, and the wire filling speed is 230-270 cm/min. The other is the same as one of the first to ninth embodiments.
The invention is not limited to the above embodiments, and one or a combination of several embodiments may also achieve the object of the invention.
The first embodiment is as follows:
the method for controlling the forming of the high-strength steel dissimilar welding seam by adopting the special groove-twin-wire MAG welding is specifically carried out according to the following steps:
1. cleaning two high-strength steel plate pieces of Q550D and 35CrMnSiA with the thickness of 20mm to be welded, forming V-shaped grooves on two sides, forming a groove angle of 30 degrees, machining a half S-shaped groove with the height of 10mm at the lower end of the V-shaped groove on the 30CrMnMoRe side on the basis of the V-shaped groove by using a carbon arc air gouging machine, wherein the maximum sinking distance is 3mm, polishing the inner surfaces of 20mm on two sides of the groove to expose the metal surface, and removing rust and oil stains in the range of 50mm in a region to be welded;
2. fixing the plate to be welded processed in the step one by using a clamp, adjusting the distance between two wires of an MAG welding gun and placing the MAG welding gun perpendicular to a welding bead;
3. setting MAG welding parameters, wherein the first step is double-wire MAG welding, the Q550D side is filled with a JM58 welding wire, and the wire filling speed is 120cm/min; the 30CrMnMoRe side filler wire is ER140S-G, and the filler wire speed is 180cm/min; the specific parameters are as follows: MAG welding current 131A, welding voltage 23V, welding speed 450mm/min, included angle of two welding wires of 10 degrees, interval of the welding wires of 14mm, and the temperature of a to-be-welded seam is reduced to 120 ℃, and then cover surface welding is carried out;
the second welding process is monofilament swing cover welding and ER120S-G welding wire filling, and the specific parameters are as follows: MAG welding current is 100A, welding voltage is 19V, swing arc width is 20mm, swing arc frequency is 1hz, and welding speed is 230mm/min;
4. and step three, naturally cooling after welding, and then performing dehydrogenation treatment to complete welding.
FIG. 1 is a schematic diagram of the first embodiment of using special groove-twin-wire MAG welding to control the formation of high-strength steel dissimilar welding seams; wherein 1 represents a Q550D steel plate, 2 represents 35CrMnSiA,3 represents a half S-shaped groove, 4 represents a double-wire spacing and included angle, 5 represents a JM58 welding wire, and 6 represents an ER140S-G welding wire.
FIG. 2 is a graph of the hardness distribution of the dissimilar weld and the single filament filling of the high strength steel controlled by the special groove-twin wire MAG welding in the first embodiment, wherein 1 represents the first embodiment (twin wire filling) and 2 represents the single filament filling.
The embodiment realizes the connection of dissimilar ultrahigh-strength steel plates with the tensile strength difference exceeding 1000MPa, measures the Vickers microhardness of the welding seam, and observes that the gradient of the performance change of the welding seam can be obviously reduced by using double-wire filling, and meanwhile, the two sides of the welding seam are symmetrically distributed without obvious deviation.
Claims (10)
1. A method for controlling the forming of a high-strength steel dissimilar welding seam by adopting special groove-twin-wire MAG welding is characterized by comprising the following steps:
1. cleaning, polishing and beveling two high-strength steel plate pieces to be welded;
2. fixing the plate to be welded processed in the first step by using a clamp, adjusting the distance between two wires of an MAG welding gun and placing the MAG welding gun perpendicular to a weld bead;
3. setting MAG welding parameters for welding, wherein the first path is double-wire MAG welding, and the specific parameters are as follows: MAG welding current is 120-140A, welding voltage is 22-25V, welding speed is 450-500 mm/min, the included angle between two welding wires is 10-15 degrees, and the distance between the two welding wires is 11-15 mm;
the second welding is the welding of the single-wire swinging cover surface, and the specific parameters are as follows: MAG welding current is 90-110A, welding voltage is 19-21V, swing arc width is 18-23 mm, swing arc frequency is 0.8-1.5 hz, and welding speed is 200-300 mm/min;
4. and step three, naturally cooling after welding, and then performing dehydrogenation treatment to finish welding.
2. The method for controlling the formation of the high-strength steel dissimilar weld joint by adopting the special groove-twin-wire MAG welding as claimed in claim 1, wherein the high-strength steel plate pieces in the step one are Q550D and 35CrMnSiA respectively, and the thicknesses of the high-strength steel plate pieces are 20-25 mm.
3. The method for controlling the formation of the high-strength steel dissimilar welding seam by adopting the special groove-twin-wire MAG welding as claimed in claim 1, wherein the groove on the Q550D side is a V-shaped groove, and a half S-shaped groove with the height of 9-11 mm is machined at the lower end of the V-shaped groove on the 30CrMnMoRe side by using a carbon arc gas gouging on the basis of the V-shaped groove.
4. The method for controlling the formation of the high-strength steel dissimilar welding seam by adopting the special groove-twin wire MAG welding as claimed in claim 1, wherein the angle of the V-shaped groove machining in the step one is 30-45 degrees.
5. The method for controlling the formation of the high-strength steel dissimilar welding seam by adopting the special groove-twin-wire MAG welding as claimed in claim 1, wherein the polishing treatment in the step one is to polish the 20mm inner surfaces at two sides of the groove to expose the metal surface, and remove rust and oil stains in a 50mm range of a region to be welded.
6. The method for controlling the formation of the high-strength steel dissimilar weld by adopting the special groove-twin-wire MAG welding as claimed in claim 1, wherein the Q550D side filler wire in the step three is JM58, and the 30CrMnMoRe side filler wire is ER140S-G.
7. The method for controlling the forming of the high-strength steel dissimilar welding seam by adopting the special groove-double-wire MAG welding as claimed in claim 6, wherein the two welding wires are provided with independent wire feeding mechanisms, the wire filling speed of JM58 is 100-150 cm/min, and the wire filling speed of ER140S-G is 150-200 cm/min.
8. The method for controlling the formation of the high-strength steel dissimilar welding seam by adopting the special groove-twin-wire MAG welding as claimed in claim 1, wherein the interlayer temperature is controlled to be 100-150 ℃ before the second welding in the third step.
9. The method for controlling the forming of the high-strength steel dissimilar welding seam by adopting the special groove-double-wire MAG welding as claimed in claim 1, wherein the second welding seam filler wire in the third step is ER120S-G, and the wire filling speed is 200-300 cm/min.
10. The method for controlling the formation of the high-strength steel dissimilar welding seam by adopting the special groove-twin-wire MAG welding as claimed in claim 1, wherein the second welding seam in the third step is filled with welding wire ER120S-G at a wire filling speed of 230-270 cm/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211678092.XA CN115945764A (en) | 2022-12-26 | 2022-12-26 | Method for controlling high-strength steel dissimilar welding seam forming by adopting special groove-twin-wire MAG welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211678092.XA CN115945764A (en) | 2022-12-26 | 2022-12-26 | Method for controlling high-strength steel dissimilar welding seam forming by adopting special groove-twin-wire MAG welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115945764A true CN115945764A (en) | 2023-04-11 |
Family
ID=87288579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211678092.XA Pending CN115945764A (en) | 2022-12-26 | 2022-12-26 | Method for controlling high-strength steel dissimilar welding seam forming by adopting special groove-twin-wire MAG welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115945764A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785929A (en) * | 2014-01-15 | 2014-05-14 | 上海交通大学 | GMAW horizontal welding method for board with large thickness |
| CN106735757A (en) * | 2016-12-28 | 2017-05-31 | 宜昌市瑞洋机械制造有限公司 | A kind of carbon dioxide gas arc welding of austenitic stainless steel pressure vessels connects method |
| JP2017185526A (en) * | 2016-04-05 | 2017-10-12 | 新日鐵住金株式会社 | Manufacturing method of multi-layered butt welding joint and multi-layered butt welding joint |
| CN107252955A (en) * | 2017-06-08 | 2017-10-17 | 江苏海力风电设备科技有限公司 | The welding procedure of offshore wind farm jacket basis bracket |
| CN114850633A (en) * | 2022-05-02 | 2022-08-05 | 石家庄铁道大学 | Three-wire consumable electrode gas shielded welding method for dissimilar material connection |
-
2022
- 2022-12-26 CN CN202211678092.XA patent/CN115945764A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785929A (en) * | 2014-01-15 | 2014-05-14 | 上海交通大学 | GMAW horizontal welding method for board with large thickness |
| JP2017185526A (en) * | 2016-04-05 | 2017-10-12 | 新日鐵住金株式会社 | Manufacturing method of multi-layered butt welding joint and multi-layered butt welding joint |
| CN106735757A (en) * | 2016-12-28 | 2017-05-31 | 宜昌市瑞洋机械制造有限公司 | A kind of carbon dioxide gas arc welding of austenitic stainless steel pressure vessels connects method |
| CN107252955A (en) * | 2017-06-08 | 2017-10-17 | 江苏海力风电设备科技有限公司 | The welding procedure of offshore wind farm jacket basis bracket |
| CN114850633A (en) * | 2022-05-02 | 2022-08-05 | 石家庄铁道大学 | Three-wire consumable electrode gas shielded welding method for dissimilar material connection |
Non-Patent Citations (1)
| Title |
|---|
| 李怀舟等: "S355J2W+N 耐候钢高频脉冲MAG 焊不同保护气体的接头组织和性能", WELDING TECHNOLOGY, vol. 51, no. 5, 31 May 2022 (2022-05-31), pages 31 - 34 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3205267U (en) | System for welding using hot wire TIG position thermal control | |
| CN101134260A (en) | Three-filum open arc welding method | |
| CN107322148B (en) | Welding method based on tungsten electrode argon arc welding and cold metal transition welding composite heat source and application | |
| CN110681956B (en) | Deep-fusion fillet welding process for welding medium plate of hydraulic support structural part | |
| WO2003020465A1 (en) | System and method facilitating fillet weld performance | |
| CN108907414B (en) | High-deposition-efficiency high-welding-speed double-tungsten-electrode TIG (tungsten inert gas) narrow-gap welding method | |
| CN103008895A (en) | Narrow gap multi-pass laser welding method for thick plate | |
| CN106425104A (en) | One-sided welding double-sided molding welding method for titanium steel composite pipe | |
| CN108581142B (en) | Ultrahigh-speed double-wire co-molten pool gas metal arc welding process | |
| CN109262111B (en) | Twin-wire surfacing device and method | |
| CN105728944A (en) | Double-side laser welding method for powder metallurgy control | |
| WO2014140763A2 (en) | System and method of welding stainless steel to copper | |
| CN104278269A (en) | Preparation method for surface-reinforcing coating of copper crystallizer | |
| CN112743249A (en) | Method and system for stirring and strengthening welding seam of composite layer based on electric arc melting of base material | |
| CN111730177B (en) | Low-dilution-rate double-filler-wire TIG surfacing process and application thereof | |
| US20190111510A1 (en) | Build-up welding method | |
| CN114952050B (en) | Composite welding method suitable for large-diameter thick-wall cylinder body with diameter of more than 8mm | |
| Kobayashi et al. | Practical application of high efficiency twin-arc TIG welding method (SEDAR-TIG) for PCLNG storage tank | |
| CN113681116A (en) | Double-wire dissimilar or same metal magnetic control swinging arc GTAW narrow gap welding device and method | |
| CN107824943A (en) | A kind of depth melts arc-welding double welding gun welding procedure | |
| CN115945764A (en) | Method for controlling high-strength steel dissimilar welding seam forming by adopting special groove-twin-wire MAG welding | |
| CN101704162B (en) | Electroslag welding method for cylindrical longitudinal seam V groove | |
| CN107350604A (en) | A kind of biobelt pole submerged arc overlay welding method | |
| US20010022465A1 (en) | Weld joint design for corners | |
| CN108161183A (en) | A kind of container longitudinal joint of 1G downhand positions or circumferential weld composite tungsten electrode inert gas-shielded arc welding welding procedure |
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 |