CN116352270A - Technological method for reducing welding deformation of stainless steel ring - Google Patents
Technological method for reducing welding deformation of stainless steel ring Download PDFInfo
- Publication number
- CN116352270A CN116352270A CN202211416339.0A CN202211416339A CN116352270A CN 116352270 A CN116352270 A CN 116352270A CN 202211416339 A CN202211416339 A CN 202211416339A CN 116352270 A CN116352270 A CN 116352270A
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- CN
- China
- Prior art keywords
- welding
- stainless steel
- workpiece
- deformation
- spot
- 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 90
- 238000000034 method Methods 0.000 title claims abstract description 32
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 28
- 239000010935 stainless steel Substances 0.000 title claims abstract description 28
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 229910052786 argon Inorganic materials 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000005238 degreasing Methods 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 239000011324 bead Substances 0.000 claims description 3
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
- B23K26/28—Seam welding of curved planar seams
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/60—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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
- B23K2103/05—Stainless steel
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Arc Welding In General (AREA)
- Laser Beam Processing (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to the technical field of stainless steel welding, and discloses a process method for reducing welding deformation of a stainless steel ring, which comprises the following processing steps: s1, degreasing, cleaning and drying a welding workpiece, and removing impurities and greasy dirt in a welding area; s2, assembling and assembling on a working platform, uniformly spot-setting by using an argon arc welding machine, then spot-setting two identical workpieces back to back, and clamping by using a C-shaped clamp during spot-setting; s3, placing the two workpieces after spot fixing on a rotary positioner, and clamping and fixing; s4, adjusting laser welding equipment and parameters, and performing laser welding; s5, after one surface is welded, turning over the workpiece and welding another workpiece; s6, placing the workpiece into a heat treatment furnace after welding, preserving heat for 4 hours, and air-cooling. The invention has reasonable technical scheme, stable welding process, small deformation after welding after separating two stainless steel rings, no air holes are found after removing the surplus height of the machined weld seam, the flatness deformation after welding is 0.5mm, the roundness deformation is less than 0.02, and the verticality deformation is less than 0.1.
Description
Technical Field
The invention relates to the technical field of stainless steel welding, in particular to a process method for reducing welding deformation of a stainless steel ring.
Background
Stainless steel has good corrosion resistance, heat resistance, mechanical properties, weldability and other advantages, and is widely applied to industries such as buildings, ships, chemistry, automobiles, food and the like. The back fixing is not used, the welding deformation is large in the process of welding circular seams, correction is not good after welding, a laser welding process is adopted after spot fixing, and compared with the traditional manual arc welding, argon arc welding and other methods, the laser welding of stainless steel has the advantages of high welding speed, high efficiency, large depth-to-width ratio, narrow heat affected zone of welding seams, small deformation, good welding quality and good applicability to parts with complex structures and parts with high precision requirements; and after welding, placing the steel wire into a heat treatment furnace, eliminating stress and reducing welding deformation.
The conventional argon arc welding can generate larger deformation after welding, so that a technical method for reducing the welding deformation of the stainless steel ring is provided to solve the problems.
Disclosure of Invention
The invention aims to solve the defect that the traditional argon arc welding in the prior art can generate larger deformation after welding, and provides a process method for reducing welding deformation of a stainless steel ring.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the invention provides a process method for reducing welding deformation of a stainless steel ring, which comprises the following processing steps:
s1, degreasing, cleaning and drying a welding workpiece, and removing impurities and greasy dirt in a welding area;
s2, assembling and assembling on a working platform, uniformly spot-setting by using an argon arc welding machine, then spot-setting two identical workpieces back to back, and clamping by using a C-shaped clamp during spot-setting;
s3, placing the two workpieces after spot fixing on a rotary positioner, and clamping and fixing;
s4, adjusting laser welding equipment and parameters, and performing laser welding;
s5, after one surface is welded, turning over the workpiece and welding another workpiece;
s6, placing the workpiece into a heat treatment furnace after welding, preserving heat for 4 hours, and air-cooling;
s7, after the workpieces are cooled, dividing the two workpieces, and measuring the flatness after dividing;
s8, removing the surplus height of the weld seam, and checking the air hole quantity on the surface of the weld bead.
As a preferable technical scheme of the invention, the workpiece material is 316L stainless steel, and the thickness of the cover plate is 3mm respectively.
As a preferred embodiment of the invention, the workpiece weld joint is in the form of a lap joint.
As a preferable technical scheme of the invention, the welding workpiece is cleaned in the mode of ultrasonic vibration in the step S1, the cleaning time is 15min, and the welding workpiece is dried for 1 hour at the temperature of 120 ℃ after cleaning.
As a preferable technical scheme of the invention, in the step S2, the work pieces are assembled and paired on the working platform, so that the pairing clearance is ensured to be smaller than 0.2mm, and the misalignment is ensured to be smaller than 0.2mm.
As a preferable technical scheme of the invention, the spot-bonding is carried out by adopting a TIG welding method in the step S2, the parameters are 60A, the nitrogen flow is 10L/min, and the spot-bonding is carried out at intervals of 100 mm.
As a preferable technical solution of the present invention, the parameters of the laser welding apparatus in S4 are: the laser power is 2300W, the laser inclination angle is 0 degree, the defocusing amount is +6, the welding speed is 0.02m/s, and the nitrogen flow is 25L/min.
As a preferable technical scheme of the invention, the temperature in the heat treatment furnace in the S6 is 400+/-10 ℃.
The beneficial effects of the invention are as follows:
the technological method for reducing welding deformation of the stainless steel rings is reasonable in technological scheme, stable in welding process, small in welding deformation after the two stainless steel rings are separated, free of air holes after the surplus height of a machined welding seam is removed, 0.5mm in flatness deformation after welding, less than 0.02mm in roundness deformation and less than 0.1mm in perpendicularity deformation.
Detailed Description
The following description of the embodiments of the present invention will be made more apparent and fully by describing the embodiments of the present invention with reference to the specific embodiments, and it is apparent that the described embodiments are only some of the embodiments of the present invention, not all of the embodiments.
A process method for reducing welding deformation of a stainless steel ring comprises the following processing steps:
s1, degreasing, cleaning and drying a welding workpiece, and removing impurities and greasy dirt in a welding area;
s2, assembling and assembling on a working platform, uniformly spot-setting by using an argon arc welding machine, then spot-setting two identical workpieces back to back, and clamping by using a C-shaped clamp during spot-setting;
s3, placing the two workpieces after spot fixing on a rotary positioner, and clamping and fixing;
s4, adjusting laser welding equipment and parameters, and performing laser welding;
s5, after one surface is welded, turning over the workpiece and welding another workpiece;
s6, placing the workpiece into a heat treatment furnace after welding, preserving heat for 4 hours, and air-cooling;
s7, after the workpieces are cooled, dividing the two workpieces, and measuring the flatness after dividing;
s8, removing the surplus height of the weld seam, and checking the air hole quantity on the surface of the weld bead.
Further, the workpiece is made of 316L stainless steel, and the thickness of the cover plate is 3mm respectively.
Further, the workpiece weld joint is in the form of a lap joint.
Further, in the step S1, the welding workpiece is cleaned by adopting an ultrasonic vibration mode, the cleaning time is 15min, and the welding workpiece is dried for 1 hour at the temperature of 120 ℃ after cleaning.
Furthermore, in the step S2, the work pieces are assembled and assembled on the working platform, so that the assembling clearance is ensured to be smaller than 0.2mm, and the misalignment is ensured to be smaller than 0.2mm.
Further, in the step S2, the TIG welding method is adopted for spot solidification, the parameters are 60A, the nitrogen flow is 10L/min, and the spot solidification is carried out at intervals of 100 mm.
Further, the parameters of the laser welding device in S4 are: the laser power is 2300W, the laser inclination angle is 0 degree, the defocusing amount is +6, the welding speed is 0.02m/s, and the nitrogen flow is 25L/min.
Further, the temperature in the heat treatment furnace in the step S6 is 400+/-10 ℃.
In the embodiment, the technical method for reducing the welding deformation of the stainless steel ring is reasonable in technical scheme, stable in welding process, small in deformation after welding after separating the two stainless steel rings, free of air holes after removing the residual height of a machined welding seam, 0.5mm in flatness deformation after welding, less than 0.02 in roundness deformation and less than 0.1 in verticality deformation.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (8)
1. The technological method for reducing welding deformation of the stainless steel ring is characterized by comprising the following processing steps of:
s1, degreasing, cleaning and drying a welding workpiece, and removing impurities and greasy dirt in a welding area;
s2, assembling and assembling on a working platform, uniformly spot-setting by using an argon arc welding machine, then spot-setting two identical workpieces back to back, and clamping by using a C-shaped clamp during spot-setting;
s3, placing the two workpieces after spot fixing on a rotary positioner, and clamping and fixing;
s4, adjusting laser welding equipment and parameters, and performing laser welding;
s5, after one surface is welded, turning over the workpiece and welding another workpiece;
s6, placing the workpiece into a heat treatment furnace after welding, preserving heat for 4 hours, and air-cooling;
s7, after the workpieces are cooled, dividing the two workpieces, and measuring the flatness after dividing;
s8, removing the surplus height of the weld seam, and checking the air hole quantity on the surface of the weld bead.
2. The process for reducing welding deformation of a stainless steel ring according to claim 1, wherein the workpiece is 316L stainless steel, and the thickness of the cover plate is 3mm.
3. A method of reducing weld distortion in a stainless steel ring as set forth in claim 1, wherein the workpiece weld joint is in the form of a lap joint.
4. The process for reducing welding deformation of a stainless steel ring according to claim 1, wherein the welding workpiece is cleaned by ultrasonic vibration in S1 for 15min and dried at 120 ℃ for 1 hour after cleaning.
5. The process for reducing welding deformation of a stainless steel ring according to claim 1, wherein in the step S2, the workpieces are assembled and assembled on the working platform, the assembly gap is ensured to be smaller than 0.2mm, and the misalignment is ensured to be smaller than 0.2mm.
6. The process for reducing welding deformation of the stainless steel ring according to claim 1, wherein the step S2 is performed by spot welding with a TIG welding method, the parameter is 60A, the nitrogen flow is 10L/min, and the spot welding is performed at intervals of 100 mm.
7. The process for reducing welding deformation of stainless steel ring according to claim 1, wherein the parameters of the laser welding apparatus in S4 are: the laser power is 2300W, the laser inclination angle is 0 degree, the defocusing amount is +6, the welding speed is 0.02m/s, and the nitrogen flow is 25L/min.
8. A process for reducing welding deformation of stainless steel rings according to claim 1, wherein the temperature in the heat treatment furnace in S6 is 400 ℃ ± 10 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211416339.0A CN116352270A (en) | 2022-11-12 | 2022-11-12 | Technological method for reducing welding deformation of stainless steel ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211416339.0A CN116352270A (en) | 2022-11-12 | 2022-11-12 | Technological method for reducing welding deformation of stainless steel ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116352270A true CN116352270A (en) | 2023-06-30 |
Family
ID=86925713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211416339.0A Pending CN116352270A (en) | 2022-11-12 | 2022-11-12 | Technological method for reducing welding deformation of stainless steel ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116352270A (en) |
-
2022
- 2022-11-12 CN CN202211416339.0A patent/CN116352270A/en active Pending
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