CN114932333B - Welding process of closed pressure-bearing container - Google Patents
Welding process of closed pressure-bearing container Download PDFInfo
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- CN114932333B CN114932333B CN202210641569.0A CN202210641569A CN114932333B CN 114932333 B CN114932333 B CN 114932333B CN 202210641569 A CN202210641569 A CN 202210641569A CN 114932333 B CN114932333 B CN 114932333B
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- 238000003466 welding Methods 0.000 title claims abstract description 303
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000003223 protective agent Substances 0.000 claims abstract description 35
- 238000004140 cleaning Methods 0.000 claims abstract description 15
- 238000005498 polishing Methods 0.000 claims abstract description 14
- 238000007781 pre-processing 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
- 239000011248 coating agent Substances 0.000 claims abstract description 7
- 238000000576 coating method Methods 0.000 claims abstract description 7
- 239000000428 dust Substances 0.000 claims abstract description 6
- 239000007921 spray Substances 0.000 claims description 32
- 239000007788 liquid Substances 0.000 claims description 20
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 10
- 238000001802 infusion Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 229910018072 Al 2 O 3 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
- 238000007865 diluting Methods 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 5
- 239000004753 textile Substances 0.000 claims description 5
- 238000013459 approach Methods 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects 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
- 230000035515 penetration Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002893 slag Substances 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
- 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
Landscapes
- 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 a 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 a workpiece: moving the selected workpiece to the bottom end of a clamping device placed on a welding platform, and fixing the workpiece through the clamping device; s3, preprocessing a welding line: uniformly coating a protective agent into the welding seam at the welding position of the workpiece; s4, preprocessing welding rods: taking out the welding rod to be used, and preheating; s5, welding a workpiece: driving the welder to move along the direction of the welding line at the welding position to weld the workpiece; s6, polishing burrs: and after the welding is finished, the burrs on the surface of the welding line at the welding position are removed by using the steel wire, so that cracks generated on the surface of the welding line 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-bearing container is also called a pressure container, the materials selected by the pressure container have strict regulations, the pressure container is divided into low-temperature steel and high-temperature steel, the highest working pressure regulated by the pressure-bearing container is more than or equal to 0.1MPa, the inner diameter is more than or equal to 0.15m, the volume is more than or equal to 0.025 cubic meter, the containing medium is gas, liquefied gas or liquid with the highest working temperature being more than or equal to the standard boiling point, and the pressure container manufacturing license is mainly required, and the pressure-bearing container has good sealing property and pressure stability.
The pressure-bearing container is required to be welded in the production and processing process to improve the sealing effect, and at present, the welding is mainly carried out by relying on manual experience in the welding process, and when thicker materials are welded, if the operation method is improper, the surface can only be welded, so that the phenomenon of incomplete welding inside a welding part is caused, 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 the thicker material is welded, such as improper operation method, the surface can only be welded, so that the phenomenon of incomplete welding inside the welding piece is caused, and the subsequent use is influenced.
The aim of the invention can be achieved by the following technical scheme:
the welding process of the closed pressure-bearing container specifically comprises the following steps:
s1, cleaning a 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 a workpiece: the screw is driven to rotate by the rotating handle, and nuts at two sides drive the clamping plate to move towards the direction of the pressure-bearing container so as to realize positioning and fixing of the pressure-bearing container;
s3, preprocessing a welding line: the position of the guide plate is adjusted to enable the spray head to be positioned at the welding seam end of the pressure-bearing container, then the support plate is pushed 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 the pressure pump is started, and the protective agent in the liquid storage tank is conveyed to the spray head through the infusion tube and sprayed to the welding seam to be welded;
s4, preprocessing welding rods: taking out the welding rod to be used, preheating, and mounting the welding rod on a welder after the preheating is finished;
s5, welding a 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 removing burrs on the surface of the welding line at the welding position by using the steel wire after the welding is finished.
Preferably, in step S1, the parts to be welded of the workpieces are cleaned with a soft-thorn brush, sponge or dry textile cloth.
Preferably, in step S3, the protecting agent includes the following components in percentage by mass: siO (SiO) 2 12-18％、TiO 2 10-15％、MnO 2 10-12％、Al 2 O 3 10-16%, 10-15% of Mn, 5-20% of Si, 4-15% of Mg and 10-15% of Al, mixing with a binder according to a mass ratio of 1:2 to prepare a mixture, and diluting with acetone according to a 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 placed in a constant temperature box at 100 ℃ for 0.5-1 hour.
Preferably, in step S4, the welding rod is selected from welding rods with the diameter of 0.8-1.2mm and the height of 30cm.
Preferably, in step S5, a spot welding method is adopted, the welding rod is attached to the spot welding position, the electrode reaches the welding position, the lap amount, the spot distance, the welding spot strength value, the conductivity and the surface cleanliness are set by the welding control device, and then the welding is performed.
Preferably, in step S5, the welding movement speed is 0.2-0.5m/min.
Preferably, in step S6, burrs on the surface of the weld at the welding position are polished with a polishing rod.
The invention has the beneficial effects that:
(1) The protective agent is uniformly smeared into the welding seams at the welding positions of the workpieces, so that the welding surfaces are fully welded, the penetration depth and the welding compactness are increased, the welding quality and efficiency between the welding seams are improved, and the guarantee is provided for the flow-path operation of welding;
(2) The protective agent is formed by mixing metal oxide and metal powder, so that the compactness of the welding rod and a workpiece is improved during welding, cracks, surface air holes and surface slag inclusions generated on the surface of a welding line are greatly reduced, the service life of the sealed pressure-bearing container after welding is prolonged, and the overall practicability is higher.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic flow chart of a welding process of a closed pressure-bearing container of the present invention;
FIG. 2 is a schematic perspective view of a welding device in a welding process of a sealed pressure-bearing container according to the present invention;
FIG. 3 is a schematic perspective view of a welding device in a welding process of a sealed pressure-bearing container according to the present invention;
FIG. 4 is a perspective view of a welding device in a welding process of a sealed pressure-bearing container according to the present invention;
fig. 5 is a schematic structural view of a screw of a welding device in a welding process of a closed pressure-bearing container according to the present invention.
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. a welding platform; 201. a pressure pump; 202. an infusion 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. and (3) a screw.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1, the invention relates to a welding process of a closed pressure-bearing container, which specifically comprises the following steps:
s1, cleaning a 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;
in the step S1, cleaning the position to be welded of the pressure-bearing container by using a soft-thorn brush, sponge or dry textile cloth;
s2, clamping a workpiece: the screw 704 is driven to rotate by rotating the handle 6, and the nuts 702 at the two sides drive the clamping plate 701 to move towards the direction of the pressure-bearing container so as to fix the pressure-bearing container;
s3, preprocessing a welding line: the position of the guide plate 4 is adjusted so that the spray head 203 is positioned at the welding seam end of the pressure-bearing container, then the support plate 402 is pushed by the air cylinder 3 to move towards the direction of the pressure-bearing container, so that the spray head 203 is attached to the welding seam, then the pressure pump 201 is started, and the pressure pump 201 conveys the protective agent in the liquid storage tank 2 to the spray head 203 through the infusion tube 202 and sprays the protective agent to the welding seam to be welded;
wherein the protective agent comprises the following components in percentage by mass: siO (SiO) 2 12％、TiO 2 10％、MnO 2 10％、Al 2 O 3 10%, mn10%, si20%, mg15% and Al13% of powder, mixing the powder with a binder according to a mass ratio of 1:2 to prepare a mixture, and diluting the mixture with acetone according to a mass ratio of 1:2 to obtain a protective agent;
s4, preprocessing welding rods: taking out the welding rod to be used, preheating, and mounting the welding rod on the welder 502 after the 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 0.5 hour;
the welding rod with the diameter of 0.8-1.2mm is selected as the welding rod, and the height is 30cm;
s5, welding a workpiece: after the protective agent is coated, the air cylinder 3 is contracted, 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 a 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 the 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 conductivity and the surface cleanliness are set through the welding control equipment 5, and then welding is carried out;
the speed of the welding moving guide plate 4 is 0.2m/min;
s6, polishing burrs: removing burrs on the surface of the welding line at the welding position by using a steel wire after the welding is finished;
after the welding is finished, polishing burrs on the surface of the welding line at the welding position by adopting a polishing rod;
referring to fig. 2-5, the welding process of the closed pressure-bearing container of the present invention is based on a welding device, the welding device comprises a frame 1, a welding assembly and a coating assembly, the welding assembly comprises a welding platform 7 arranged between the frames 1, the surface of the welding platform 7 is provided with a clamping device for positioning and fixing the pressure-bearing container, the clamping device comprises an adjusting box 703 relatively fixedly installed in the welding platform 7, the adjusting box 703 is rotationally provided with a screw 704, threads on two sides of the screw 704 are in opposite directions, the surface of the screw 704 is relatively sleeved with a nut 702, the nut 702 is fixedly connected with a clamping plate 701 movably arranged on the surface of the welding platform 7, and the end part of the screw 704 is fixedly provided with a handle 6; when the pressure-bearing container is fixed, the pressure-bearing container is placed on the surface of the welding platform 7, the screw 704 is driven to rotate by rotating the handle 6, and the nuts 702 at two sides drive the clamping plates 701 to move towards the direction of the pressure-bearing container so as to realize positioning and fixing of the pressure-bearing container;
a support plate 402 is arranged on one side of the welding platform 7, guide plates 4 are arranged between the frames 1 in a sliding manner, two ends of each guide plate 4 are respectively connected with sliding rails 401 arranged between the frames 1 in a sliding manner, and each guide plate 4 is provided with an air cylinder 3 for pushing the support plate 402 to approach or separate from the welding platform 7;
the coating liquid component comprises a spray head 203 which is arranged at one end of a support plate 402 in the direction of a welding platform 7, the spray head 203 is connected with a liquid conveying pipe 202, the liquid conveying pipe 202 is connected with a liquid storage tank 2 through a pressure pump 201, in the actual operation process, when a protective agent is required to be coated on a welding seam, the position of a guide plate 4 is adjusted so that the spray head 203 is positioned at the welding seam end of a pressure-bearing container, then the support plate 402 is pushed by a cylinder 3 to move towards the direction of the pressure-bearing container, 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 and sprayed on the welding seam to be welded;
a welder 502 is arranged at one end of the support plate 402 opposite to the spray head 203, the welder 502 is used for clamping welding rods to weld a welding seam of a pressure-bearing container, the other end of the welder 502 is connected with a welding control device 5 through a control circuit 501, after a protective agent is coated in the actual welding process, the air cylinder 3 is contracted, then the welder 502 with the welding rods fixed is positioned at a 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;
wherein, in the process of coating the protective agent and welding, the position of the guide plate 4 is manually adjusted, so that the nozzle 203 or the welder 502 moves along the extending position of the welding seam, and the coating and welding of the protective agent are completed.
Example 2
The welding process of the closed pressure-bearing container specifically comprises the following steps:
s1, cleaning a 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;
in the step S1, cleaning the position to be welded of the pressure-bearing container by using a soft-thorn brush, sponge or dry textile cloth;
s2, clamping a workpiece: the screw 704 is driven to rotate by rotating the handle 6, and the nuts 702 at the two sides drive the clamping plates 701 to move towards the direction of the pressure-bearing container so as to realize positioning and fixing of the pressure-bearing container;
s3, preprocessing a welding line: the position of the guide plate 4 is adjusted so that the spray head 203 is positioned at the welding seam end of the pressure-bearing container, then the support plate 402 is pushed by the air cylinder 3 to move towards the direction of the pressure-bearing container, so that the spray head 203 is attached to the welding seam, then the pressure pump 201 is started, and the pressure pump 201 conveys the protective agent in the liquid storage tank 2 to the spray head 203 through the infusion tube 202 and sprays the protective agent to the welding seam to be welded;
wherein the protective agent comprises the following components in percentage by mass: siO (SiO) 2 15％、TiO 2 12％、MnO 2 11％、Al 2 O 3 Mixing 14% of Mn12%, 10% of Si, 16% of Mg and 10% of Al, mixing with a binder according to a mass ratio of 1:2 to form a mixture, and diluting with acetone according to a mass ratio of 1:2 to obtain a protective agent;
s4, preprocessing welding rods: taking out the welding rod to be used, preheating, and mounting the welding rod on the welder 502 after the preheating is finished;
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 0.8 hour;
the welding rod with the diameter of 0.8-1.2mm is selected as the welding rod, and the height is 30cm;
s5, welding a workpiece: after the protective agent is coated, the air cylinder 3 is contracted, 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 a 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 the 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 conductivity and the surface cleanliness are set through the welding control equipment 5, and then welding is carried out;
the speed of the welding moving guide plate 4 is 0.3m/min;
s6, polishing burrs: removing burrs on the surface of the welding line at the welding position by using a steel wire after the welding is finished;
and after the welding is finished, polishing burrs on the surface of the welding line at the welding position by adopting a polishing rod.
Example 3
The welding process of the closed pressure-bearing container specifically comprises the following steps:
s1, cleaning a 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;
in the step S1, cleaning the position to be welded of the pressure-bearing container by using a soft-thorn brush, sponge or dry textile cloth;
s2, clamping a workpiece: the screw 704 is driven to rotate by rotating the handle 6, and the nuts 702 at the two sides drive the clamping plates 701 to move towards the direction of the pressure-bearing container so as to realize positioning and fixing of the pressure-bearing container;
s3, preprocessing a welding line: the position of the guide plate 4 is adjusted so that the spray head 203 is positioned at the welding seam end of the pressure-bearing container, then the support plate 402 is pushed by the air cylinder 3 to move towards the direction of the pressure-bearing container, so that the spray head 203 is attached to the welding seam, then the pressure pump 201 is started, and the pressure pump 201 conveys the protective agent in the liquid storage tank 2 to the spray head 203 through the infusion tube 202 and sprays the protective agent to the welding seam to be welded;
wherein the protective agent comprises the following components in percentage by mass: siO (SiO) 2 18％、TiO 2 15％、MnO 2 12％、Al 2 O 3 Mixing 16% of Mn15%, 5% of Si5%, 4% of Mg and 15% of Al, mixing with a binder according to a mass ratio of 1:2 to form a mixture, and diluting with acetone according to a mass ratio of 1:2 to obtain a protective agent;
s4, preprocessing welding rods: taking out the welding rod to be used, preheating, and mounting the welding rod on the welder 502 after the preheating is finished;
wherein, during preheating, the welding rod is dried for 2 hours at 400 ℃, and the dried welding rod is placed in a constant temperature box at 100 ℃ for 1 hour;
the welding rod with the diameter of 0.8-1.2mm is selected as the welding rod, and the height is 30cm;
s5, welding a workpiece: after the protective agent is coated, the air cylinder 3 is contracted, 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 a 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 the 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 conductivity and the surface cleanliness are set through the welding control equipment 5, and then welding is carried out;
the speed of the welding moving guide plate 4 is 0.5m/min;
s6, polishing burrs: removing burrs on the surface of the welding line at the welding position by using a steel wire after the welding is finished;
and after the welding is finished, polishing burrs on the surface of the welding line at the welding position by adopting a polishing rod.
In the description of the present invention, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and for simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, as well as a specific orientation configuration and operation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, 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; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (7)
1. The welding process of the closed pressure-bearing container is characterized by comprising the following steps of:
s1, cleaning a 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 a workpiece: the screw (704) is driven to rotate by rotating the handle (6), and nuts (702) at two sides drive the clamping plate (701) to move towards the direction of the pressure-bearing container so as to realize positioning and fixing of the pressure-bearing container;
s3, preprocessing a welding line: the position of the guide plate (4) is adjusted to enable the spray head (203) to be positioned at the welding seam end of the pressure-bearing container, then the support plate (402) is pushed to move towards the direction of the pressure-bearing container by the air cylinder (3) to enable the spray head (203) to be attached to the welding seam, the pressure pump (201) is started, and the pressure pump (201) conveys the protective agent in the liquid storage tank (2) to the spray head (203) through the infusion tube (202) and sprays the protective agent to the welding seam to be welded;
s4, preprocessing welding rods: taking out the welding rod to be used, preheating, and mounting the welding rod on a welder (502) after the preheating is finished;
s5, welding a workpiece: after the protective agent is coated, the air cylinder (3) is contracted, 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;
s6, polishing burrs: removing burrs on the surface of the welding line at the welding position by using a steel wire after the welding is finished;
the welding device used in the welding process comprises a frame (1), a welding assembly and a coating liquid assembly, wherein the welding assembly comprises a welding platform (7) arranged between the frames (1), a clamping device used for positioning and fixing a pressure-bearing container is arranged on the surface of the welding platform (7), the clamping device comprises an adjusting box body (703) which is relatively and fixedly arranged in the welding platform (7), a screw rod (704) is rotationally arranged in the adjusting box body (703), threads on two sides of the screw rod (704) are opposite in rotation direction, a nut (702) is sleeved on the surface of the screw rod (704) relative to the threads, the nut (702) is fixedly connected with a clamping plate (701) movably arranged on the surface of the welding platform (7), and a handle (6) is fixedly arranged at the end part of the screw rod (704); when the pressure-bearing container is fixed, the pressure-bearing container is placed on the surface of a welding platform (7), a screw (704) is driven to rotate by a rotating handle (6), and nuts (702) at two sides drive a clamping plate (701) to move towards the direction of the pressure-bearing container so as to realize positioning and fixing of the pressure-bearing container;
a support plate (402) is arranged on one side of the welding platform (7), guide plates (4) are arranged between the frames (1) in a sliding manner, two ends of each guide plate (4) are respectively connected with sliding rails (401) arranged between the frames (1) in a sliding manner, and each guide plate (4) is provided with an air cylinder (3) for pushing the support plate (402) to approach or separate from the welding platform (7);
the liquid coating assembly comprises a spray head (203) arranged at one end of a support plate (402) towards the direction of a welding platform (7), the spray head (203) is connected with a liquid conveying pipe (202), the liquid conveying pipe (202) is connected with a liquid storage tank (2) through a pressure pump (201), in the actual operation process, when a protective agent is required to be coated on a welding line, the position of a guide plate (4) is adjusted, the spray head (203) is positioned at the welding line end of a pressure-bearing container, then the support plate (402) is pushed to move towards the direction of the pressure-bearing container through a cylinder (3), the spray head (203) is attached to the welding line, 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) and sprayed to the welding line to be welded;
the welding device comprises a support plate (402), a welding rod, a control circuit (501), a welding control device (5), a cylinder (3) and a guide plate (4), wherein the support plate (402) is provided with the welding device (502) relative to one end of the spray head (203), the welding device (502) is used for clamping the welding rod to weld a welding seam of a pressure-bearing container, the other end of the welding device (502) is connected with the welding control device (5) through the control circuit (501), after a protective agent is coated in the actual welding process, the cylinder (3) is contracted, then the welding device (502) with the welding rod fixed is positioned at a welding end through the guide plate (4), and the welding control device (5) is started to adjust the welding device (502) to weld the welding seam through the control circuit (501);
in the step S3, the protective agent comprises the following components in percentage by mass: siO (SiO) 2 12-18%、TiO 2 10-15%、MnO 2 10-12%、Al 2 O 3 10-16%, 10-15% of Mn, 5-20% of Si, 4-15% of Mg and 10-15% of Al, mixing with a binder according to a mass ratio of 1:2 to prepare a mixture, and diluting with acetone according to a weight ratio of 1:2 to obtain the protective agent.
2. A process for welding a closed pressure vessel according to claim 1, wherein in step S1, the parts to be welded are cleaned with a soft-thorn brush, sponge or dry textile cloth.
3. The welding process of a sealed pressure-bearing container according to 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 placed in a constant temperature oven at 100 ℃ for 0.5-1 hour.
4. A process for welding a closed pressure vessel according to claim 3 wherein in step S4, the electrode is selected from the group consisting of electrodes having a diameter of 0.8-1.2mm and a height of 30cm.
5. The welding process of a sealed pressure-bearing container according to claim 1, wherein in step S5, a spot welding method is adopted, a welding rod is attached to a spot welding position, the electrode reaches the welding position, and the lap joint amount, the spot distance, the welding point strength value, the conductivity and the surface cleanliness are set by a welding control device (5), and then welding is performed.
6. A process for welding a closed pressure vessel according to claim 5, wherein in step S5 the speed of moving the deflector (4) during welding is 0.2-0.5m/min.
7. The welding process of a sealed pressure-bearing container according to claim 1, wherein in step S6, burrs on the surface of the weld at the welding position are polished by a polishing rod.
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