CN114932333A - Welding process of closed pressure-bearing container - Google Patents
Welding process of closed pressure-bearing container Download PDFInfo
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- CN114932333A CN114932333A CN202210641569.0A CN202210641569A CN114932333A CN 114932333 A CN114932333 A CN 114932333A CN 202210641569 A CN202210641569 A CN 202210641569A CN 114932333 A CN114932333 A CN 114932333A
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- 238000003466 welding Methods 0.000 title claims abstract description 266
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000003223 protective agent Substances 0.000 claims abstract description 33
- 238000004140 cleaning Methods 0.000 claims abstract description 13
- 238000005498 polishing Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 239000000428 dust Substances 0.000 claims abstract description 6
- 239000007921 spray Substances 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 19
- 239000000843 powder Substances 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 14
- 238000003860 storage Methods 0.000 claims description 11
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 10
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 5
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 5
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 5
- 230000003749 cleanliness Effects 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 abstract description 5
- 238000000576 coating method Methods 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 description 5
- 238000007865 diluting Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
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Classifications
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- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/12—Vessels
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Pressure Vessels And Lids Thereof (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a welding process of a closed pressure-bearing container, which relates to the technical field of welding and specifically comprises the following steps: s1, cleaning the workpiece: taking out the pressure-bearing container to be welded, placing the pressure-bearing container on a welding platform, and cleaning sundries or dust at the welding position of the pressure-bearing container; s2, clamping the workpiece: moving the selected workpiece to the bottom end of a clamping device placed on the welding platform, and fixing the workpiece through the clamping device; s3, weld joint pretreatment: uniformly coating a protective agent into a welding seam at the welding position of a workpiece; s4, pretreatment of the welding rod: taking out the welding rod to be used, and preheating; s5, welding the workpiece: driving a welding device to move along the direction of a welding seam at the welding position to weld the workpiece; s6, polishing burrs: after welding, burrs on the surface of a welding seam at the welding position are removed by using a steel wire, cracks generated on the surface of the welding seam are reduced, and the service life of the closed pressure-bearing container is prolonged.
Description
Technical Field
The invention relates to the technical field of welding, in particular to a welding process of a closed pressure-bearing container.
Background
The pressure container is also called as a pressure container, the pressure container is made of materials with strict regulations and is divided into low-temperature steel and high-temperature steel, the maximum working pressure of the pressure container is greater than or equal to 0.1MPa, the inner diameter of the pressure container is greater than or equal to 0.15m, the volume of the pressure container is greater than or equal to 0.025 cubic meter, the contained medium is gas, liquefied gas or liquid with the maximum working temperature higher than or equal to a standard boiling point, and the pressure container is mainly required to have a pressure container manufacturing license and needs to have good tightness and pressure stability.
The pressure-bearing container needs to be welded in the production and processing process so as to improve the sealing effect, at present, welding is carried out mainly by manual experience in the welding process, and for thicker materials, if an operation method is improper, only the surface can be welded, so that the phenomenon of incomplete penetration occurs in the welding part, and the subsequent use is influenced.
Disclosure of Invention
The invention aims to provide a welding process of a closed pressure-bearing container, which solves the following technical problems:
when a thicker material is welded, if an operation method is improper, only the surface can be welded, so that the phenomenon of incomplete penetration occurs inside a welded part, and the subsequent use is influenced.
The purpose of the invention can be realized by the following technical scheme:
a welding process of a closed pressure-bearing container specifically comprises the following steps:
s1, cleaning the workpiece: taking out the pressure-bearing container to be welded, placing the pressure-bearing container on a welding platform, and cleaning sundries or dust at the welding position of the pressure-bearing container;
s2, clamping the workpiece: the screw rod is driven to rotate by rotating the handle, and the nuts on the two sides drive the clamping plates to move towards the direction of the pressure-bearing container so as to position and fix the pressure-bearing container;
s3, weld joint pretreatment: adjusting the position of the guide plate to enable the spray head to be positioned at the welding seam end of the pressure-bearing container, then pushing the support plate to move towards the direction of the pressure-bearing container through the air cylinder to enable the spray head to be attached to the welding seam, then starting the pressure pump, and conveying the protective agent in the liquid storage tank to the spray head through the liquid conveying pipe and spraying the protective agent to the welding seam to be welded through the pressure pump;
s4, electrode pretreatment: taking out the welding rod to be used, preheating, and mounting the welding rod on a welding device after preheating is finished;
s5, welding the workpiece: after the protective agent is coated, the cylinder contracts, then the welding device with the welding rod fixed is positioned at the welding end by adjusting the guide plate, the welding control equipment adjusts the welding device to weld the welding seam through a control circuit, the position of the guide plate is adjusted, and the welding device is driven to move along the direction of the welding seam at the welding position to weld the pressure-bearing container;
s6, polishing burrs: and after the welding is finished, removing burrs on the surface of the welding seam at the welding position by using a steel wire.
Preferably, in step S1, the positions to be welded of the workpiece are cleaned with a soft bristle brush, a sponge, or a dry woven cloth.
Preferably, in step S3, the protective agent includes the following components by mass percent: SiO 2 2 12-18％、TiO 2 10-15％、MnO 2 10-12％、Al 2 O 3 10-16% of powder, Mn 10-15% of powder, Si 5-20% of powder, Mg 4-15% of powder and Al 10-15% of powder are mixed, the mixture is blended with a binder according to the mass ratio of 1:2 to obtain a mixture, and then the mixture is diluted with acetone according to the weight ratio of 1:2 to obtain the protective agent.
Preferably, in step S4, the welding rod is dried at 400 ℃ for 1-2 hours during preheating, and the dried welding rod is stored in a thermostat at 100 ℃ for 0.5-1 hour.
Preferably, in step S4, the welding rod is 0.8-1.2mm in diameter and 30cm in height.
Preferably, in step S5, the welding rod is attached to the spot welding position by spot welding, the electrode reaches the welding position, the lap joint amount, the spot distance, the strength of the welding spot, the electric conductivity and the surface cleanliness are set by the welding control device, and then welding is performed.
Preferably, in step S5, the welding moving speed is 0.2-0.5 m/min.
Preferably, in step S6, the burr of the surface of the weld at the welding position is ground using a grinding rod.
The invention has the beneficial effects that:
(1) the protective agent is uniformly coated in the welding seam at the welding position of the workpiece, so that the welding surface is fully welded, the depth of fusion and the welding tightness are increased, the welding quality and efficiency among the welding seams are improved, and the guarantee is provided for the flow operation of welding;
(2) the protective agent is formed by mixing metal oxide and metal powder, so that the compactness of a welding rod and a workpiece is improved during welding, cracks, surface air holes and surface slag inclusions generated on the surface of a welding seam are greatly reduced, the service life of the sealed pressure-bearing container after welding is prolonged, and the integral practicability is higher.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic flow chart of a welding process for a sealed pressure-bearing vessel according to the present invention;
FIG. 2 is a first perspective view of a welding device in the welding process of the closed pressure-bearing container of the present invention;
FIG. 3 is a second schematic perspective view of a welding apparatus in the welding process of the sealed pressure-bearing container of the present invention;
FIG. 4 is a third schematic perspective view of a welding apparatus in the welding process of the sealed pressure-bearing container of the present invention;
fig. 5 is a schematic structural diagram of a screw of a welding device in the welding process of the closed pressure-bearing container.
In the figure: 1. a frame; 2. a liquid storage tank; 3. a cylinder; 4. a guide plate; 5. a welding control device; 6. a handle; 7. welding a platform; 201. a pressure pump; 202. a transfusion tube; 203. a spray head; 401. a slide rail; 402. a support plate; 501. a control circuit; 502. a welder; 701. a clamping plate; 702. a nut; 703. adjusting the box body; 704. a screw.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, the present invention is a welding process for a sealed pressure-bearing container, which specifically includes the following steps:
s1, cleaning the workpiece: taking out the pressure-bearing container to be welded, placing the pressure-bearing container on the welding platform 7, and cleaning sundries or dust at the welding position of the pressure-bearing container;
in step S1, cleaning the to-be-welded position of the pressure-bearing container with a soft bristle brush, sponge or dry textile cloth;
s2, clamping the workpiece: the handle 6 is rotated to drive the screw 704 to rotate, and the nuts 702 on the two sides drive the clamping plate 701 to move towards the direction of the pressure-bearing container to realize the positioning and fixing of the pressure-bearing container;
s3, weld joint pretreatment: adjusting the position of the guide plate 4 to enable the spray head 203 to be positioned at the welding seam end of the pressure-bearing container, then pushing the support plate 402 to move towards the direction of the pressure-bearing container through the air cylinder 3 to enable the spray head 203 to be attached to the welding seam, then starting the pressure pump 201, and enabling the pressure pump 201 to convey the protective agent in the liquid storage tank 2 to the spray head 203 through the liquid conveying pipe 202 and spray the protective agent to the welding seam to be welded;
the protective agent comprises the following components in percentage by mass: SiO 2 2 12％、TiO 2 10％、MnO 2 10％、Al 2 O 3 10 percent of Mn10 percent of Si20 percent of Mg15 percent of Al13 percent of powder, mixing the powder with a binder according to the mass ratio of 1:2 to obtain a mixture, and then diluting the mixture with acetone according to the mass ratio of 1:2 to obtain a protective agent;
s4, electrode pretreatment: taking out the welding rod to be used, preheating the welding rod, and mounting the welding rod on a welding device 502 after preheating is finished;
wherein, during preheating, the welding rod is dried for 1 hour at 400 ℃, and the dried welding rod is placed in a constant temperature box at 100 ℃ for storage for 0.5 hour;
the welding rod with diameter of 0.8-1.2mm and height of 30cm is selected;
s5, welding the workpiece: after the protective agent is coated, the cylinder 3 contracts, then the welding device 502 with the welding rod fixed is positioned at the welding end by adjusting the guide plate 4, the welding control equipment 5 adjusts the welding device 502 to weld the welding seam through the control circuit 501, the position of the guide plate 4 is adjusted, and the welding device 502 is driven to move along the direction of the welding seam at the welding position to weld the pressure-bearing container;
when welding a workpiece, in step S5, a spot welding mode is adopted, the cylinder 3 continuously contracts and stretches, the welding rod is attached to the spot welding position, the electrode reaches the welding position, the lap joint amount, the spot distance, the welding spot strength value, the electric conductivity and the surface cleanliness are set by the welding control device 5, and then welding is performed;
the speed of welding the movable guide plate 4 is 0.2 m/min;
s6, polishing burrs: removing burrs on the surface of a welding seam at the welding position by using a steel wire after welding;
after welding is finished, polishing burrs on the surface of a welding seam at the welding position by using a polishing rod;
referring to fig. 2-5, the welding process for a sealed pressure-bearing container according to the present invention is based on a welding device, the welding device includes a frame 1, a welding assembly and a liquid coating assembly, the welding assembly includes a welding platform 7 disposed between the frame 1, a clamping device for positioning and fixing the pressure-bearing container is disposed on the surface of the welding platform 7, the clamping device includes an adjusting box 703 relatively fixedly disposed in the welding platform 7, a screw 704 is rotatably disposed in the adjusting box 703, the thread directions of the two sides of the screw 704 are opposite, a nut 702 is sleeved on the surface of the screw 704 opposite to the thread, the nut 702 is fixedly connected to a clamping plate 701 movably disposed on the surface of the welding platform 7, and a handle 6 is fixedly mounted at the end of the screw 704; when the pressure-bearing container is fixed, the pressure-bearing container is placed on the surface of a welding platform 7, a handle 6 is rotated to drive a screw 704 to rotate, and nuts 702 on two sides drive a clamping plate 701 to move towards the direction of the pressure-bearing container to position and fix the pressure-bearing container;
a support plate 402 is arranged on one side of the welding platform 7, a guide plate 4 is arranged between the racks 1 in a sliding manner, two ends of the guide plate 4 are respectively connected with a sliding rail 401 arranged between the racks 1 in a sliding manner, and the guide plate 4 is provided with a cylinder 3 for pushing the support plate 402 to approach or depart from the welding platform 7;
the liquid coating component comprises a spray head 203 arranged at one end of a support plate 402 facing the welding platform 7, the spray head 203 is connected with a liquid conveying pipe 202, the liquid conveying pipe 202 is connected with the liquid storage tank 2 through a pressure pump 201, in the actual operation process, when a protective agent needs to be coated on a welding seam, the position of a guide plate 4 is adjusted, the spray head 203 is located at the welding seam end of a pressure-bearing container, then the support plate 402 is pushed to move towards the direction of the pressure-bearing container through an air cylinder 3, the spray head 203 is attached to the welding seam, then the pressure pump 201 is started, and the protective agent in the liquid storage tank 2 is conveyed to the spray head 203 through the liquid conveying pipe 202 by the pressure pump 201 and is sprayed to the welding seam to be welded;
a welder 502 is arranged at one end of the support plate 402, which is opposite to the spray head 203, the welder 502 is used for clamping a welding rod to weld the welding seam of the pressure-bearing container, the other end of the welder 502 is connected with a welding control device 5 through a control circuit 501, in the actual welding process, after a protective agent is coated, the air cylinder 3 is contracted, then the welder 502 with the welding rod fixed is positioned at the welding end through adjusting the guide plate 4, and the welding control device 5 is started to adjust the welder 502 to weld the welding seam through the control circuit 501;
in the process of coating the protective agent and welding, the position of the guide plate 4 is manually adjusted, so that the spray head 203 or the welder 502 moves along the extending position of the welding line, and the coating and welding of the protective agent are completed.
Example 2
A welding process of a closed pressure-bearing container specifically comprises the following steps:
s1, cleaning the workpiece: taking out the pressure-bearing container to be welded, placing the pressure-bearing container on the welding platform 7, and cleaning sundries or dust at the welding position of the pressure-bearing container;
wherein, in step S1, the position to be welded of the pressure-bearing container is cleaned with a soft barbed brush, a sponge or a dry woven cloth;
s2, clamping the workpiece: the handle 6 is rotated to drive the screw 704 to rotate, and the nuts 702 on the two sides drive the clamping plate 701 to move towards the direction of the pressure-bearing container to realize positioning and fixing of the pressure-bearing container;
s3, weld joint pretreatment: adjusting the position of the guide plate 4 to enable the nozzle 203 to be located at the welding seam end of the pressure-bearing container, then pushing the support plate 402 to move towards the direction of the pressure-bearing container through the cylinder 3 to enable the nozzle 203 to be attached to the welding seam, then starting the pressure pump 201, and enabling the pressure pump 201 to convey the protective agent in the liquid storage tank 2 to the nozzle 203 through the liquid conveying pipe 202 and spray the protective agent to the welding seam to be welded;
the protective agent comprises the following components in percentage by mass: SiO 2 2 15％、TiO 2 12％、MnO 2 11％、Al 2 O 3 Mixing 14% of powder, Mn 12% of powder, Si 10% of powder, Mg 16% of powder and Al 10% of powder, blending the mixture with a binder according to the mass ratio of 1:2 to obtain a mixture, and then diluting the mixture with acetone according to the mass ratio of 1:2 to obtain a protective agent;
s4, pretreatment of the welding rod: taking out the welding rod to be used, preheating the welding rod, and mounting the welding rod on the welding device 502 after preheating is completed;
wherein, during preheating, the welding rod is dried for 1.5 hours at 400 ℃, and the dried welding rod is placed in a constant temperature box at 100 ℃ for storage for 0.8 hour;
the welding rod with diameter of 0.8-1.2mm and height of 30cm is selected;
s5, welding the workpiece: after the protective agent is coated, the cylinder 3 contracts, then the welding device 502 with the welding rod fixed is positioned at the welding end by adjusting the guide plate 4, the welding control equipment 5 adjusts the welding device 502 to weld the welding seam through the control circuit 501, the position of the guide plate 4 is adjusted, and the welding device 502 is driven to move along the direction of the welding seam at the welding position to weld the pressure-bearing container;
when a workpiece is welded in the step S5, the cylinder 3 is continuously contracted and stretched in a spot welding mode, the welding rod is attached to the spot welding position, the electrode reaches the welding position, the lap joint quantity, the spot distance, the welding spot strength value, the electric conductivity and the surface cleanliness are set through the welding control equipment 5, and then welding is carried out;
the speed of welding the movable guide plate 4 is 0.3 m/min;
s6, polishing burrs: removing burrs on the surface of a welding seam at the welding position by using a steel wire after welding;
after welding is finished, polishing burrs on the surface of the welding line at the welding position by using a polishing rod.
Example 3
A welding process of a closed pressure-bearing container specifically comprises the following steps:
s1, cleaning the workpiece: taking out the pressure-bearing container to be welded, placing the pressure-bearing container on the welding platform 7, and cleaning sundries or dust at the welding position of the pressure-bearing container;
wherein, in step S1, the position to be welded of the pressure-bearing container is cleaned with a soft barbed brush, a sponge or a dry woven cloth;
s2, clamping the workpiece: the handle 6 is rotated to drive the screw 704 to rotate, and the nuts 702 on the two sides drive the clamping plate 701 to move towards the direction of the pressure-bearing container to realize positioning and fixing of the pressure-bearing container;
s3, weld joint pretreatment: adjusting the position of the guide plate 4 to enable the spray head 203 to be positioned at the welding seam end of the pressure-bearing container, then pushing the support plate 402 to move towards the direction of the pressure-bearing container through the air cylinder 3 to enable the spray head 203 to be attached to the welding seam, then starting the pressure pump 201, and enabling the pressure pump 201 to convey the protective agent in the liquid storage tank 2 to the spray head 203 through the liquid conveying pipe 202 and spray the protective agent to the welding seam to be welded;
the protective agent comprises the following components in percentage by mass: SiO 2 2 18％、TiO 2 15％、MnO 2 12％、Al 2 O 3 16 percent of Mn15 percent, 5 percent of Si, 4 percent of Mg and 15 percent of Al, mixing the mixture with a binder according to the mass ratio of 1:2 to obtain a mixture, and then diluting the mixture with acetone according to the mass ratio of 1:2 to obtain a protective agent;
s4, electrode pretreatment: taking out the welding rod to be used, preheating the welding rod, and mounting the welding rod on the welding device 502 after preheating is completed;
wherein, during preheating, the welding rod is dried for 2 hours at 400 ℃, and the dried welding rod is placed in a thermostat at 100 ℃ for storage for 1 hour;
the welding rod with diameter of 0.8-1.2mm and height of 30cm is selected;
s5, welding the workpiece: after the protective agent is coated, the cylinder 3 contracts, then the welding device 502 with the welding rod fixed is positioned at the welding end by adjusting the guide plate 4, the welding control equipment 5 adjusts the welding device 502 to weld the welding seam through the control circuit 501, the position of the guide plate 4 is adjusted, and the welding device 502 is driven to move along the direction of the welding seam at the welding position to weld the pressure-bearing container;
when welding a workpiece, in step S5, a spot welding mode is adopted, the cylinder 3 continuously contracts and stretches, the welding rod is attached to the spot welding position, the electrode reaches the welding position, the lap joint amount, the spot distance, the welding spot strength value, the electric conductivity and the surface cleanliness are set by the welding control device 5, and then welding is performed;
the speed of welding the movable guide plate 4 is 0.5 m/min;
s6, polishing burrs: removing burrs on the surface of a welding seam at the welding position by using a steel wire after welding;
after welding is finished, polishing burrs on the surface of the welding line at the welding position by using a polishing rod.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (8)
1. A welding process of a closed pressure-bearing container is characterized by comprising the following steps:
s1, cleaning the workpiece: taking out the pressure-bearing container to be welded, placing the pressure-bearing container on a welding platform (7), and cleaning sundries or dust at the welding position of the pressure-bearing container;
s2, clamping the workpiece: the handle (6) is rotated to drive the screw (704) to rotate, and the nuts (702) on the two sides drive the clamping plate (701) to move towards the direction of the pressure-bearing container to realize positioning and fixing of the pressure-bearing container;
s3, weld joint pretreatment: adjusting the position of the guide plate (4) to enable the spray head (203) to be located at the welding seam end of the pressure-bearing container, then pushing the support plate (402) to move towards the direction of the pressure-bearing container through the air cylinder (3), enabling the spray head (203) to be attached to the welding seam, starting the pressure pump (201), and enabling the pressure pump (201) to convey the protective agent in the liquid storage tank (2) to the spray head (203) through the liquid conveying pipe (202) and spray the protective agent to the welding seam to be welded;
s4, pretreatment of the welding rod: taking out the welding rod to be used, preheating, and mounting the welding rod on a welding device (502) after preheating is finished;
s5, welding the workpiece: after the protective agent is coated, the air cylinder (3) contracts, then the welding device (502) with the welding rods fixed is positioned at the welding end by adjusting the guide plate (4), the welding control equipment (5) adjusts the welding device (502) to weld the welding seams through a control circuit (501), the position of the guide plate (4) is adjusted, and the welding device (502) is driven to move along the direction of the welding seams at the welding position to weld the pressure-bearing container;
s6, polishing burrs: and after welding, removing burrs on the surface of the welding seam at the welding position by using a steel wire.
2. A welding process for a hermetic pressure container according to claim 1, wherein in step S1, the position to be welded of the workpiece is cleaned with a soft barbed brush, sponge or dry woven cloth.
3. The welding process of the closed pressure-bearing container as claimed in claim 1, wherein in step S3, the protective agent comprises the following components in percentage by mass: SiO 2 2 12-18％、TiO 2 10-15％、MnO 2 10-12％、Al 2 O 3 10-16% of powder, Mn 10-15% of powder, Si 5-20% of powder, Mg 4-15% of powder and Al 10-15% of powder are mixed, the mixture is blended with a binder according to the mass ratio of 1:2 to obtain a mixture, and then the mixture is diluted with acetone according to the weight ratio of 1:2 to obtain the protective agent.
4. A process for welding a closed pressure-bearing container as claimed in claim 1, wherein in step S4, the welding rod is dried at 400 ℃ for 1-2 hours during preheating, and the dried welding rod is stored in a 100 ℃ incubator for 0.5-1 hour.
5. A process for welding a closed pressure vessel according to claim 4, wherein in step S4, the welding rod is selected from the group consisting of welding rods having a diameter of 0.8-1.2mm and a height of 30 cm.
6. The welding process of the closed pressure-bearing container according to the claim 1, wherein in step S5, the welding rod is attached to the spot welding position by spot welding, the electrode reaches the welding position, the lap joint amount, the point distance, the strength value of the welding point, the electric conductivity and the surface cleanliness are set by the welding control device (5), and then the welding is performed.
7. A process for welding a closed pressure vessel according to claim 6, wherein in step S5, the speed of the moving guide plate (4) during welding is 0.2-0.5 m/min.
8. The welding process of a sealed pressure-containing vessel according to claim 1, wherein in step S6, the burr on the surface of the weld at the welding position is ground by a grinding rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210641569.0A CN114932333B (en) | 2022-06-07 | 2022-06-07 | Welding process of closed pressure-bearing container |
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