CN118559162B - Welding method of stainless steel 316Ti for high temperature - Google Patents
Welding method of stainless steel 316Ti for high temperature Download PDFInfo
- Publication number
- CN118559162B CN118559162B CN202411034694.0A CN202411034694A CN118559162B CN 118559162 B CN118559162 B CN 118559162B CN 202411034694 A CN202411034694 A CN 202411034694A CN 118559162 B CN118559162 B CN 118559162B
- Authority
- CN
- China
- Prior art keywords
- welding
- stainless steel
- temperature stainless
- percent
- submerged arc
- 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.)
- Active
Links
- 238000003466 welding Methods 0.000 title claims abstract description 194
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 74
- 239000010935 stainless steel Substances 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000004907 flux Effects 0.000 claims abstract description 18
- 230000037452 priming Effects 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 2
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 229910052681 coesite Inorganic materials 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 229910052906 cristobalite Inorganic materials 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 229910052682 stishovite Inorganic materials 0.000 claims description 2
- 229910052905 tridymite Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 20
- 230000007797 corrosion Effects 0.000 abstract description 16
- 238000005260 corrosion Methods 0.000 abstract description 16
- 239000000126 substance Substances 0.000 abstract description 14
- 230000007547 defect Effects 0.000 abstract description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 16
- 229910052786 argon Inorganic materials 0.000 description 8
- 238000005452 bending Methods 0.000 description 7
- 238000007689 inspection Methods 0.000 description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000009835 boiling Methods 0.000 description 3
- 238000005253 cladding Methods 0.000 description 3
- ALKZAGKDWUSJED-UHFFFAOYSA-N dinuclear copper ion Chemical compound [Cu].[Cu] ALKZAGKDWUSJED-UHFFFAOYSA-N 0.000 description 3
- 239000011573 trace mineral Substances 0.000 description 3
- 235000013619 trace mineral Nutrition 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Abstract
The invention provides a welding method of high-temperature stainless steel 316Ti, and relates to the field of high-temperature stainless steel 316Ti welding. According to the welding method of the high-temperature stainless steel 316Ti, the high-temperature stainless steel 316Ti does not need to be preheated, ER316Ti submerged arc welding wires are adopted, SJ601 welding flux is matched, and automatic submerged arc welding is carried out on the high-temperature stainless steel 316 Ti; the ER316Ti submerged arc welding wire contains 0.35-0.6% by mass of Ti. The welding method of the high-temperature stainless steel 316Ti can solve the problems that the chemical components and the welding performance of the existing 318 welding materials are not matched with those of the high-temperature stainless steel 316Ti, and improves the high-temperature stability, the corrosion resistance and the mechanical performance of a welding joint under the condition of realizing automatic filament submerged arc welding, avoids the defects of cracks, air holes and the like of a welding line, improves the welding quality and improves the welding efficiency of the high-temperature stainless steel 316 Ti.
Description
Technical Field
The invention relates to the field of welding of high-temperature stainless steel 316Ti, in particular to a welding method of high-temperature stainless steel 316 Ti.
Background
With the continuous development of technology, there are many products such as containers made of high-temperature stainless steel 316Ti, and the like, so that the high-temperature stainless steel 316Ti contains trace element Ti, so that the welding materials recommended in the existing standard and market only have 318 welding materials, and Nb in the 318 welding materials is used to replace Ti element in the high-temperature stainless steel 316 Ti.
However, the existing 318 welding materials are argon arc welding wires and welding rods, the requirements of automatic submerged arc welding cannot be met, only argon arc welding and welding rod welding can be carried out, the welding efficiency is extremely low, and the welding labor condition is poor; meanwhile, the chemical components and welding performance of the existing 318 welding materials are not matched with those of the high-temperature stainless steel 316Ti, nb elements in the 318 welding materials are burnt out due to large heat input in the welding process, so that the high-temperature stability, corrosion resistance and mechanical properties of the welding seams are reduced, defects such as cracks and air holes of the welding seams can be caused, the welding quality is poor, and the working performance of the welded high-temperature stainless steel 316Ti product in a high-temperature working condition is seriously affected.
Therefore, the invention provides a welding method of high-temperature stainless steel 316Ti, which can solve the problems that the chemical components and welding performance of the existing 318 welding materials are not matched with those of the high-temperature stainless steel 316Ti, and only argon arc welding and welding rod welding can be performed, effectively improve the high-temperature stability, corrosion resistance and mechanical property of a welding joint under the automatic filament submerged-arc welding condition of the high-temperature stainless steel 316Ti, effectively avoid the defects of cracks, air holes and the like of a welding joint, greatly improve the welding efficiency of the high-temperature stainless steel 316Ti while improving the welding quality, reduce the welding labor intensity, further improve the product competitiveness, and have important technical significance.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a welding method of high-temperature stainless steel 316Ti, which can overcome the problems that the chemical components and welding performance of the existing 318 welding materials are not matched with those of the high-temperature stainless steel 316Ti, and only argon arc welding and welding rod welding can be performed, effectively improve the high-temperature stability, corrosion resistance and mechanical performance of a welding joint under the automatic filament submerged arc welding condition aiming at the high-temperature stainless steel 316Ti, effectively avoid the defects of cracks, air holes and the like of a welding seam, greatly improve the welding efficiency aiming at the high-temperature stainless steel 316Ti while improving the welding quality, reduce the welding labor intensity and further improve the product competitiveness.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the welding method of the high-temperature stainless steel 316Ti does not need preheating, adopts ER316Ti submerged arc welding wires, matches with SJ601 flux, and carries out automatic submerged arc welding on the high-temperature stainless steel 316 Ti;
The ER316Ti submerged arc welding wire contains 0.35-0.6% by mass of Ti.
Further, the ER316Ti submerged arc welding wire comprises the following specific components in percentage by weight: less than or equal to 0.08 percent of C, 18-20 percent of Cr, 11-14 percent of Ni, 2-3 percent of Mo, 1-2.5 percent of Mn, 0.3-0.65 percent of Si, less than or equal to 0.03 percent of P, less than or equal to 0.03 percent of S, less than or equal to 0.75 percent of Cu, 0.35-0.6 percent of Ti, and the balance of Fe and unavoidable impurities.
Preferably, the diameter of the ER316Ti submerged arc welding wire is 1.6mm or 2.0mm.
Further, the SJ601 flux comprises the following components in percentage by weight: s is less than or equal to 0.035 percent, P is less than or equal to 0.0004 percent, caF 2+CaO+MgO+MnO≥50%,SiO2≤20%,CaF2 is more than or equal to 15 percent; the other components in the SJ601 flux are not particularly limited, and may be Al 2O3 or a coating.
Preferably, the particle size specification of the SJ601 flux is 10-60 meshes.
Preferably, in the automatic submerged arc welding, the groove form of the high-temperature stainless steel 316Ti is one of the following: x-shaped symmetrical double-sided bevel and V-shaped single-sided bevel.
More preferably, the inclination angle of the X-shaped symmetrical double bevel is 50-60 degrees.
More preferably, the inclination angle of the V-shaped single groove is 40-50 °.
Further, in the automatic submerged arc welding, the polarity of the power supply is controlled to be DCEN, the priming welding current is 180-260A, the priming welding voltage is 23-28V, the filling cover surface current is 240-350A, and the filling cover surface voltage is 28-31V.
Further, in the automatic submerged arc welding, the automatic welding speed is controlled to be 400-550mm/min.
Compared with the prior art, the invention has the beneficial effects that:
1) The welding method of the high-temperature stainless steel 316Ti breaks through the conventional welding method that the prior 316Ti can only be welded by manual argon arc welding and the welding rod can only be selected from 318 welding materials; the special ER316Ti submerged arc welding wire with the diameter of 1.6mm/2.0mm is adopted to match with the SJ601 welding flux, and the problems that the chemical components and welding performance of the existing 318 welding materials are not matched with those of the high-temperature stainless steel 316Ti and only argon arc welding and welding rod welding can be carried out can be solved, so that automatic filament submerged arc welding for the high-temperature stainless steel 316Ti is effectively realized, preheating is not needed before welding, the welding efficiency for the high-temperature stainless steel 316Ti is greatly improved, the welding labor intensity is reduced, and the product competitiveness is further improved.
2) According to the welding method of the high-temperature stainless steel 316Ti, disclosed by the invention, the burning loss of trace elements in large heat input is effectively avoided by adopting the special ER316Ti submerged arc welding wire, the high-temperature stability, corrosion resistance and mechanical property of a welding joint are effectively improved in automatic filament submerged arc welding of the high-temperature stainless steel 316Ti, the defects of cracks, air holes and the like of a welding seam are effectively avoided, the welding quality is further improved, and the working performance of a welded high-temperature stainless steel 316Ti product in a high-temperature working condition is ensured.
3) After the automatic filament submerged arc welding is carried out by adopting the welding method of the high-temperature stainless steel 316Ti, the welding seam is detected to be qualified by 100 percent nondestructive inspection (100 percent RT); the tensile strength exceeds 570Mpa, the yield strength exceeds 360Mpa, and the impact performance at minus 196 ℃ can reach 75J/cm 2; defect-free 180 DEG bending test, and qualified test; the chemical components and the content of the welding seam all meet the 316Ti material requirement (ASTM A240 316 Ti); intergranular corrosion test according to test E method in ASTM A262, copper-copper sulfate-16% sulfuric acid, boiling for 24 hours, defect free, pass test.
Drawings
Fig. 1 is a schematic view of a weld joint and a weld groove according to example 1.
Detailed Description
Specific embodiments of the present invention will now be described in order to provide a clearer understanding of the technical features, objects and effects of the present invention.
Example 1
The embodiment provides a welding method of stainless steel 316Ti for high temperature, which specifically comprises the following steps:
As shown in fig. 1, a high-temperature stainless steel 316Ti plate with a thickness of 15mm is welded, the bevel is in the form of an X-type symmetrical double-sided bevel (bevel inclination angle is 60 °), and no gap is left between the pairs with 2mm blunt edges; the high-temperature stainless steel 316Ti plate does not need to be preheated, ER316Ti submerged arc welding wires with specific component composition and content and diameter of 2.0mm are adopted to match with SJ601 flux, and automatic submerged arc welding is carried out on the high-temperature stainless steel 316Ti plate.
In the automatic submerged arc welding process, the polarity of a power supply is controlled to be DCEN, the priming welding current is 240A, the priming welding voltage is 28V, the filling cover surface current is 320A, the filling cover surface voltage is 30V, and the welding speed is 450mm/min.
The ER316Ti submerged arc welding wire comprises the following specific components in percentage by weight:
the particle size specification of the SJ601 flux is 20 meshes; the SJ601 flux comprises the following components in percentage by weight:
By adopting the welding method of the high-temperature stainless steel 316Ti, automatic submerged arc welding is carried out, two groups of parallel tests are arranged on the same test plate, and the test data result is as follows: the weld joint is detected to be qualified by 100 percent nondestructive inspection (100 percent RT); the chemical composition of the welding seam meets the requirement of 316Ti material; the tensile property test, the 180-degree bending property test, the impact property test and the intergranular corrosion test all meet the standard requirements.
The welding seam (cladding metal) comprises the following specific components in percentage by weight:
the mechanical properties of the weld (clad metal) and the results of the intergranular corrosion test are shown below:
Example 2
The welding method of the high-temperature stainless steel 316Ti of the embodiment 1 is adopted, the ER316Ti submerged arc welding wires, the SJ601 welding flux and the same welding process parameters with the same components and content are maintained, and the automatic submerged arc welding is respectively carried out on the high-temperature stainless steel 316Ti plates with different groove forms and different thicknesses in the following scheme one to scheme five.
Specific groove forms and thickness specifications for the first to fifth embodiments are as follows:
scheme one: x-symmetric double-sided grooves with 50 degrees and a plate thickness of 10mm;
scheme II: x symmetrical double-sided 60-degree grooves with a plate thickness of 15mm;
scheme III: v single-sided 50 DEG groove, plate thickness 10mm;
scheme IV: v single-sided 55-degree groove with a plate thickness of 15mm;
Scheme five: x-symmetric double-sided 60-degree grooves with a plate thickness of 20mm.
After welding, carrying out 100% nondestructive inspection, tensile test, 180-degree bending test, impact test and intergranular corrosion test on the welding seams of the first scheme and the fifth scheme respectively, and detecting whether the chemical components and the content of each welding seam meet the 316Ti material requirement or not, wherein the specific results are as follows:
As can be seen from examples 1-2, by adopting the welding method of the high-temperature stainless steel 316Ti, 100% nondestructive inspection (100% RT) of each weld joint is qualified after automatic submerged arc welding, and the tensile strength is more than or equal to 515Mpa and the yield strength is more than or equal to 205Mpa; defect-free 180 DEG bending test, and qualified test; impact property at minus 196 ℃ is more than or equal to 27J/cm 2; the chemical components and the content of each welding seam accord with the 316Ti material requirement (ASTM A240 316 Ti); intergranular corrosion test according to test E method in ASTM A262, copper-copper sulfate-16% sulfuric acid, boiling for 24 hours, defect free, pass test. The welding method of the high-temperature stainless steel 316Ti can solve the problems that the chemical components and the welding performance of the existing 318 welding materials are not matched with those of the high-temperature stainless steel 316Ti, argon arc welding and welding rod welding can only be carried out, automatic filament submerged arc welding of the high-temperature stainless steel 316Ti is effectively realized, preheating is not needed before welding, the welding efficiency of the high-temperature stainless steel 316Ti is greatly improved, and the welding labor intensity is reduced.
Example 3
The embodiment provides a welding method of stainless steel 316Ti for high temperature, which specifically comprises the following steps:
Welding a stainless steel 316Ti plate with the thickness of 15mm at high temperature, wherein the groove is in an X-shaped symmetrical double-sided groove (the inclination angle of the groove is 60 °), and a clearance is not reserved between the pair of 2mm blunt edges; the high-temperature stainless steel 316Ti plate does not need to be preheated, a specific ER316Ti submerged arc welding wire with the diameter of 2.0mm is adopted to match with SJ601 flux, and automatic submerged arc welding is carried out on the high-temperature stainless steel 316Ti plate.
In the automatic submerged arc welding process, the polarity of a power supply is controlled to be DCEN, the priming welding current is 200A, the priming welding voltage is 25V, the filling cover surface current is 280A, the filling cover surface voltage is 30V, and the welding speed is 500mm/min.
The ER316Ti submerged arc welding wire comprises the following specific components in percentage by weight:
The specification and the content of each component of the SJ601 flux are the same as those of example 1.
By adopting the welding method of the high-temperature stainless steel 316Ti, automatic submerged arc welding is carried out, two groups of parallel tests are arranged on the same test plate, and the test data result is as follows: the weld joint is detected to be qualified by 100 percent nondestructive inspection (100 percent RT); the chemical composition of the welding seam meets the requirement of 316Ti material; the tensile property test, the 180-degree bending property test, the impact property test and the intergranular corrosion test all meet the standard requirements.
The welding seam (cladding metal) comprises the following specific components in percentage by weight:
the mechanical properties of the weld (clad metal) and the results of the intergranular corrosion test are shown below:
Example 4
The embodiment provides a welding method of stainless steel 316Ti for high temperature, which specifically comprises the following steps:
Welding a stainless steel 316Ti plate with the thickness of 15mm at high temperature, wherein the groove is in an X-shaped symmetrical double-sided groove (the inclination angle of the groove is 60 °), and a clearance is not reserved between the pair of 2mm blunt edges; the high-temperature stainless steel 316Ti plate does not need to be preheated, a specific ER316Ti submerged arc welding wire with the diameter of 2.0mm is adopted to match with SJ601 flux, and automatic submerged arc welding is carried out on the high-temperature stainless steel 316Ti plate; in the automatic submerged arc welding process, the polarity of a control power supply is DCEN, the priming welding current is 200A, the priming welding voltage is 25V, the filling cover surface current is 280A, the filling cover surface voltage is 30V, and the welding speed is 500mm/min.
The ER316Ti submerged arc welding wire comprises the following specific components in percentage by weight:
The specification and the content of each component of the SJ601 flux are the same as those of example 1.
By adopting the welding method of the high-temperature stainless steel 316Ti, automatic submerged arc welding is carried out, two groups of parallel tests are arranged on the same test plate, and the test data result is as follows: the weld joint is detected to be qualified by 100 percent nondestructive inspection (100 percent RT); the chemical composition of the welding seam meets the requirement of 316Ti material; the tensile property test, the 180-degree bending property test, the impact property test and the intergranular corrosion test all meet the standard requirements.
The welding seam (cladding metal) comprises the following specific components in percentage by weight:
the mechanical properties of the weld (clad metal) and the results of the intergranular corrosion test are shown below:
It can be seen that the welding method of the high-temperature stainless steel 316Ti provided by the invention adopts ER316Ti submerged arc welding wires with specific composition and content to match with SJ601 flux, and the chemical composition and welding performance of the existing 318 welding materials are not matched with those of the high-temperature stainless steel 316Ti, so that the problems of argon arc welding and welding rod welding can be solved, the automatic filament submerged arc welding of the high-temperature stainless steel 316Ti is effectively realized, preheating is not needed before welding, the welding efficiency of the high-temperature stainless steel 316Ti is greatly improved, the welding labor intensity is reduced, and the product competitiveness is further improved. Meanwhile, burning loss of trace elements in large heat input is effectively avoided, high-temperature stability, corrosion resistance and mechanical property of a welded joint are effectively improved in automatic filament submerged arc welding of high-temperature stainless steel 316Ti, defects such as cracks and air holes are effectively avoided in welding seams, welding quality is further improved, and working performance of a welded high-temperature stainless steel 316Ti product in a high-temperature working condition is guaranteed. After automatic filament submerged arc welding, the welding line is detected to be qualified by 100 percent nondestructive inspection (100 percent RT); the tensile strength exceeds 570Mpa, the yield strength exceeds 360Mpa, and the impact performance at minus 196 ℃ can reach 75J/cm 2; defect-free 180 DEG bending test, and qualified test; the chemical components and the content of the welding seam all meet the 316Ti material requirement (ASTM A240 316 Ti); intergranular corrosion test according to test E method in ASTM A262, copper-copper sulfate-16% sulfuric acid, boiling for 24 hours, defect free, pass test.
The percentages used in the present invention are mass percentages unless otherwise indicated.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A welding method of high-temperature stainless steel 316Ti is characterized in that the high-temperature stainless steel 316Ti does not need to be preheated, ER316Ti submerged arc welding wires are adopted, SJ601 welding flux is matched, and automatic submerged arc welding is carried out on the high-temperature stainless steel 316 Ti;
the ER316Ti submerged arc welding wire comprises the following specific components in percentage by weight: less than or equal to 0.08 percent of C, 18-20 percent of Cr, 11-14 percent of Ni, 2-3 percent of Mo, 1-2.5 percent of Mn, 0.3-0.65 percent of Si, less than or equal to 0.03 percent of P, less than or equal to 0.03 percent of S, less than or equal to 0.75 percent of Cu, 0.35-0.6 percent of Ti, and the balance of Fe and unavoidable impurities;
The SJ601 flux comprises the following components in percentage by weight: s is less than or equal to 0.035 percent, P is less than or equal to 0.0004 percent, caF 2+CaO+MgO+MnO≥50%,SiO2≤20%,CaF2 is more than or equal to 15 percent;
In the automatic submerged arc welding, the polarity of a control power supply is DCEN, the priming welding current is 180-260A, the priming welding voltage is 23-28V, the filling cover current is 240-350A, and the filling cover voltage is 28-31V.
2. The welding method of high temperature stainless steel 316Ti according to claim 1, wherein the diameter of the ER316Ti submerged arc welding wire is 1.6mm or 2.0mm.
3. The method for welding high-temperature stainless steel 316Ti according to claim 1, wherein said SJ601 flux has a particle size of 10-60 mesh.
4. The method of welding high-temperature stainless steel 316Ti according to claim 1, wherein in the automatic submerged arc welding, the groove form of high-temperature stainless steel 316Ti is one of: x-shaped symmetrical double-sided bevel and V-shaped single-sided bevel.
5. The method of welding high-temperature stainless steel 316Ti according to claim 4, wherein said X-shaped symmetrical double bevel has an inclination angle of 50-60 °.
6. The method of welding high-temperature stainless steel 316Ti according to claim 4, wherein said V-shaped single groove has an inclination angle of 40 ° to 50 °.
7. The welding method of high temperature stainless steel 316Ti according to claim 1, wherein in said automatic submerged arc welding, the automatic welding speed is controlled to be 400-550mm/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411034694.0A CN118559162B (en) | 2024-07-31 | Welding method of stainless steel 316Ti for high temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411034694.0A CN118559162B (en) | 2024-07-31 | Welding method of stainless steel 316Ti for high temperature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118559162A CN118559162A (en) | 2024-08-30 |
| CN118559162B true CN118559162B (en) | 2024-11-19 |
Family
ID=
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111843132A (en) * | 2020-08-07 | 2020-10-30 | 江南造船(集团)有限责任公司 | Submerged arc welding process for 304L stainless steel thick plate |
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111843132A (en) * | 2020-08-07 | 2020-10-30 | 江南造船(集团)有限责任公司 | Submerged arc welding process for 304L stainless steel thick plate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2067566A1 (en) | Flux-cored wire for submerged arc welding of low-temperature steel and a method for welding using the same | |
| CN107598340B (en) | Method for welding T-shaped joint of large thick plate | |
| CN102753300A (en) | Ultra high-strength welded joint and method for producing same | |
| CN103537784A (en) | Metal inert gas (MIG) welding method of aluminum alloy thin plate for high speed train | |
| CN111659980A (en) | Nickel-based high-corrosion-resistance composite steel pipe welding method | |
| CN113478054B (en) | Nickel-based alloy welding method | |
| CN111283308B (en) | All-position shielded metal arc welding process for ultralow-temperature 304LN austenitic stainless steel medium plate | |
| CN111266709A (en) | Welding method for improving ultralow-temperature toughness of 304LN austenitic stainless steel submerged-arc welding joint | |
| CN1228167C (en) | Method for red copper transition welding without preheating metal alloy | |
| CN110576273A (en) | Metal material, process and product for welding LNG (liquefied natural gas) ultralow-temperature stainless steel | |
| CN111360381A (en) | Welding method for stainless steel composite plate for container | |
| CN111266739A (en) | Method for laser-MIG electric arc composite welding of low-nickel nitrogen-containing austenitic stainless steel | |
| CN110666308B (en) | Flat butt joint MIG welding method for dissimilar aluminum alloy welding joint | |
| CN104511700A (en) | Nickel base alloy welding wire and preparation method thereof | |
| CN112008194A (en) | Welding process of composite steel plate | |
| CN118559162B (en) | Welding method of stainless steel 316Ti for high temperature | |
| CN103464930A (en) | Welding wire and welding flux for 9Ni low-temperature steel submerged arc welding as well as application of welding wire and welding flux | |
| WO2023184787A1 (en) | Flux-cored gas shielded welding wire for 9% ni steel used for storage tanks, and preparation method and use method therefor | |
| CN118559162A (en) | Welding method of stainless steel 316Ti for high temperature | |
| CN113843482A (en) | Marine low-temperature steel welding method | |
| CN106270966A (en) | A kind of process welding low-temperature spheroidal iron and manganese steel plate | |
| CN115008065B (en) | Flux-cored wire for high entropy of titanium-steel weld joint and preparation method thereof | |
| CN115070169A (en) | Steel plate welding method for 7% Ni storage tank steel | |
| CN114734123A (en) | Welding method of Q420qE +316L composite board | |
| CN111715982A (en) | Novel welding method of high-alloy austenitic heat-resistant stainless steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |