CN116689541A - Continuous production process of aluminum alloy welded pipe - Google Patents
Continuous production process of aluminum alloy welded pipe Download PDFInfo
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- CN116689541A CN116689541A CN202310596613.5A CN202310596613A CN116689541A CN 116689541 A CN116689541 A CN 116689541A CN 202310596613 A CN202310596613 A CN 202310596613A CN 116689541 A CN116689541 A CN 116689541A
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000008569 process Effects 0.000 title claims abstract description 27
- 238000010924 continuous production Methods 0.000 title claims abstract description 21
- 238000003466 welding Methods 0.000 claims abstract description 109
- 238000003756 stirring Methods 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims description 29
- 238000007689 inspection Methods 0.000 claims description 14
- 230000007547 defect Effects 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 7
- 230000002706 hydrostatic effect Effects 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 238000009957 hemming Methods 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 22
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000002788 crimping Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 239000000203 mixture Substances 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
- 238000005498 polishing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
- B21C37/0807—Tube treating or manipulating combined with, or specially adapted for use in connection with tube making machines, e.g. drawing-off devices, cutting-off
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention belongs to the technical field of aluminum alloy welded pipe production, and discloses a continuous production process of an aluminum alloy welded pipe, which can solve the problems of low production efficiency and production of a large-caliber high-strength thick-wall aluminum alloy welded pipe. The process comprises the following steps: step one: simultaneously flanging two opposite side edges of the pretreated aluminum alloy plate; step two: respectively performing pressure forming on two side edges after the flanging so that a half area of the aluminum alloy plate material comprising one side edge after the flanging is formed into a semicircular arc, and then forming a half area of the aluminum alloy plate material comprising the other side edge into a semicircular arc, thereby finally forming the aluminum alloy plate material into a circular tube with an opening integrally; step three: pre-welding the opening; step four: friction stir welding is carried out on the opening after the pre-welding; step five: and (3) mechanically expanding the closed circular pipe barrel formed in the step (IV) to ensure that the circular pipe barrel meets the required inner diameter requirement and simultaneously eliminate the welding residual stress.
Description
Technical Field
The invention relates to the technical field of aluminum alloy welded pipe production, in particular to a continuous production process of an aluminum alloy welded pipe.
Background
In the existing production of aluminum alloy welded pipes, the traditional production process of large-caliber aluminum alloy welded pipes adopts processes such as circumferential seam and longitudinal seam welding or spiral fusion welding, and the two methods can obtain good welded joints, but have the defects of poor penetration, large welding deformation, multiple welding seams, low production efficiency, high cost and the like, and are difficult to realize large-scale industrial production. In recent years, high-energy density welding technologies such as electron beam welding, YAG laser welding and the like are widely applied to the field of aluminum alloy welding, and the welding technology can effectively prevent defects generated by the traditional welding technology, improves the strength coefficient, but is relatively difficult to weld an aluminum alloy thick plate. The newly-appearing friction stir welding for producing aluminum alloy spiral welded pipes can effectively improve the quality of welding seams, but the spiral forming process has great defects for forming larger-caliber, high-strength and thick-wall pipes, and the production efficiency is severely restricted by offline arrangement of friction stir welding units.
Disclosure of Invention
The invention provides a continuous production process of an aluminum alloy welded pipe, which aims to solve the problems of low production efficiency and production efficiency of the aluminum alloy welded pipe with large caliber, high strength and thick wall.
The continuous production process of the aluminum alloy welded pipe comprises the following steps: step one: simultaneously flanging two opposite side edges of the pretreated aluminum alloy plate; step two: respectively performing pressure forming on two side edges after the flanging so that a half area of the aluminum alloy plate material comprising one side edge after the flanging is formed into a semicircular arc, and then forming a half area of the aluminum alloy plate material comprising the other side edge into a semicircular arc, thereby finally forming the aluminum alloy plate material into a circular tube with an opening integrally; step three: pre-welding the opening; step four: friction stir welding is carried out on the opening after the pre-welding; step five: and (3) mechanically expanding the closed circular pipe barrel formed in the step (IV) to ensure that the circular pipe barrel meets the required inner diameter requirement and simultaneously eliminate the welding residual stress.
Further, between the third and fourth steps, there are further steps of cleaning the pre-welded opening and heating the opening area or the entire circular tube.
Further, in the second step, the step of forming the half area of the aluminum alloy sheet including any one side edge after the hemming into a semicircular arc shape includes: the half area of the aluminum alloy plate is positioned between the supporting piece and the forming tool, and the forming tool is pressed down once when the half area of the aluminum alloy plate advances on the supporting piece once.
Further, in the fourth step, the step of friction stir welding the pre-welded opening includes: the inner welding is firstly carried out on the inner side of the opening positioned on the round tube barrel, and then the outer welding is carried out on the outer side of the opening positioned on the round tube barrel.
Further, a detection step of detecting the quality of the welding line at the opening is further included between the fourth step and the fifth step, the detection step comprises full-length phased array ultrasonic automatic flaw detection of the welding line, or the detection step comprises X-ray flaw detection after full-length phased array ultrasonic automatic flaw detection of the welding line.
Further, after the fifth step, the method further includes a sixth step: chamfering the pipe ends of the round pipe barrel subjected to mechanical expansion, and performing physical test on the round pipe barrel subjected to chamfering.
Further, the method further comprises a step seven after the physical test: weighing, measuring length and marking the round pipe barrel passing the physical test, and warehousing.
Further, the physical test includes a hydrostatic test and an airtight test, wherein when the hydrostatic test or the airtight test fails, the defect existing in the round tube is repaired and then returned to the detection step, wherein the round tube which is unqualified in the detection step is repaired and then returned to the detection step, and the round tube which is qualified in the detection step is detected to enter the fifth step.
Further, in step one, the pretreatment of the aluminum alloy sheet material comprises the steps of: welding arc striking plates on four corners of an aluminum alloy plate; performing 100% ultrasonic flaw detection and turning plate manual inspection on the aluminum alloy plate; and (5) carrying out double-sided milling on two opposite side edges of the aluminum alloy plate.
Further, between the fourth step and the detecting step, the arc striking plate is cut off after the welding line is manually checked in advance.
Compared with the prior art, the continuous production process of the aluminum alloy welded pipe has the following advantages:
1) The method adopts the mode of crimping and pressure forming, effectively expands the production specification range of the aluminum alloy welded pipe, ensures that the aluminum alloy welded pipe has more production specifications, has the external diameter dimension specification of phi 406.4mm (16 ') -phi 1626mm (60'), and is more beneficial to the production of the high-strength thick-wall aluminum alloy welded pipe;
2) The oil stain cleaning and heating are carried out on the opening before friction stir welding, so that the method can be suitable for the production of high-strength aluminum alloy welded pipes with poor welding performance, and is beneficial to improving the welding quality and welding speed of thick-wall pipes. The friction stir welding adopted does not have a melting process during welding, so that the problem easily occurring in the traditional melting welding is avoided, meanwhile, the welding temperature is low, the energy consumption is low, shielding gas and soldering flux are not needed in the welding process, dust smoke, no light radiation, no splashing and no noise are avoided, slag removal is not needed, and therefore, the welding quality is improved, and meanwhile, the welding method is more energy-saving and environment-friendly.
3) The spot welding pre-welding adopted by the production process can be matched with the speed of the pressure forming unit, and the pressure forming unit is matched by a plurality of friction stir welding units, so that the bottleneck of limiting the welding speed can be overcome, the production speed of the pressure forming unit is maximized, the purpose of mass production is fully exerted, and meanwhile, the whole production process can be continuously arranged, so that the production efficiency is greatly improved, and the equipment investment is reduced.
Drawings
Fig. 1 is a flowchart of a continuous production process of an aluminum alloy welded pipe according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings for a better understanding of the objects, structures and functions of the present invention.
Fig. 1 shows a flow chart of a continuous production process 100 of an aluminum alloy welded pipe according to an embodiment of the invention. As shown in fig. 1, the continuous production process 100 of the aluminum alloy welded pipe may include: step S1: simultaneously flanging two opposite side edges of the pretreated aluminum alloy plate; step two S2: respectively performing pressure forming (namely C forming shown in figure 1) on two side edges after being bent so that a half area of the aluminum alloy plate material comprising one side edge after being bent is formed into a semicircular arc shape, and then forming a half area of the aluminum alloy plate material comprising the other side edge into a semicircular arc shape, so that the aluminum alloy plate material is finally integrally formed into a circular tube barrel with an opening; step three S3: pre-welding the opening; step four S4: friction stir welding is carried out on the opening after the pre-welding; step five S5: and (4) mechanically expanding the closed circular pipe barrel formed in the fourth step (S4) to ensure that the circular pipe barrel meets the required inner diameter requirement and simultaneously eliminate the welding residual stress.
In the continuous production process 100 of the aluminum alloy welded pipe according to the embodiment of the invention, before the pretreated aluminum alloy plate is subjected to pressure forming, the opposite side edges of the aluminum alloy plate can be simultaneously subjected to the flanging operation by adopting the pre-flanging press, and the flanging operation can enable half areas of the two aluminum alloy plates to better present a semicircular arc shape after the subsequent pressure forming, so that the cross section of a circular pipe barrel finally formed by the aluminum alloy plates is more similar to a circle, thereby not only providing a more stable operation basis for the subsequent pre-welding and friction stir welding, but also enabling the aluminum alloy plates to be welded more quickly to form a circular pipe barrel similar to a cylinder shape, and further enabling the aluminum alloy welded pipe with the required inner diameter precision to be obtained more quickly and efficiently after the subsequent mechanical expanding. After the crimping operation is finished, the two half areas of the aluminum alloy plate subjected to pre-crimping can be subjected to pressure forming by adopting a pressure forming unit, the two half areas of the aluminum alloy plate can be subjected to pushing forming by adopting a forming tool of the pressure forming unit in an oil pressure mode, so that the production specification range of the aluminum alloy welded pipe can be effectively enlarged, the production specification of the aluminum alloy welded pipe is more, the outer diameter dimension specification of the aluminum alloy welded pipe can be phi 406.4mm (16 ') -phi 1626mm (60'), and the forming mode is more beneficial to the production of the high-strength thick-wall aluminum alloy welded pipe. In addition, as the opening in the circular pipe barrel with the opening formed in the step S2 is a straight seam, the number of welding seams is small when the circular pipe barrel is welded later, and the pressure bearing capacity is better. In addition, in the fifth S5, the circular pipe barrel subjected to friction stir welding is processed in a mechanical expanding mode, so that the welding stress is eliminated, and meanwhile, the precision of the pipe is further ensured.
According to the invention, in step three S3, the open circular tube is continuously positioned and pre-welded on the full-automatic continuous gas shielded welding machine by adopting a spot welding mode, so as to prepare for the subsequent friction stir welding. The welding machine may be TIG (non-consumable electrode inert gas (inert gas) welding) or MIG (consumable electrode inert gas (inert gas) welding), and the welding wire may be an aluminum alloy welding wire having the same composition as the base material.
According to the invention, in a preferred embodiment as shown in fig. 1, between step three S3 and step four S4, there may be further included a step of cleaning the pre-welded openings and a step of heating the opening area or the entire circular tube. In the embodiment, oil stains on the surface of the welding groove can be removed by cleaning the welding groove at the opening before friction stir welding, and then the welding groove area or the round pipe barrel at the opening is heated so as to adapt to the high-strength aluminum alloy with poor welding performance, and the welding quality and the welding speed of the thick-wall pipe weld joint are improved. It should be noted that when the inside diameter and wall thickness of the round tube are large, only the opening area may be heated.
Preferably, the opening area may be heated to 110 ℃ to 230 ℃. The welding speed of the friction stir welding machine can be 200-700 mm/min, and the rotating speed of the stirring head can be 400-1200 r/min.
According to the present invention, in step S2, the step of forming the half area of the aluminum alloy sheet including any one side edge after the hemming into a semi-circular arc shape may include: the half area of the aluminum alloy plate is positioned between the supporting piece and the forming tool, and the forming tool is pressed down once when the half area of the aluminum alloy plate advances on the supporting piece once. With successive depressions of the forming tool, each time one aluminum alloy sheet half is pressed further forward to form a half-arc, and then the other aluminum alloy sheet half is pressed in the same manner to form another half-arc, ultimately forming a round tube with an opening.
Further, in step four S4, the step of friction stir welding the pre-welded opening may include: the inner welding is firstly carried out on the inner side of the opening positioned on the round tube barrel, and then the outer welding is carried out on the outer side of the opening positioned on the round tube barrel. In the step, a plurality of numerical control friction stir welding machines can be adopted to carry out double-sided welding on the round pipe barrel after the shaping and pre-welding, and the welding process can be automatically tracked in the whole process and detected in real time.
Specifically, when internal welding is performed, the machine head of the internal welding seam welder can be installed on a fixed cantilever beam, the circular pipe barrel is placed on a movable trolley, the circular pipe barrel is sleeved on the cantilever beam by the movement of the trolley, and a surface cleaning device for cleaning the groove can be arranged on the cantilever beam. The round pipe barrel can rotate on the trolley so that the welding seam is accurately positioned below the stirring head of the inner welding seam welder, and a heating device can be arranged in front of the welding gun of the inner welding seam welder and used for preheating the opening area (comprising a heat affected zone or the whole round pipe barrel) according to requirements, and the trolley gradually pulls out the cantilever beam from the heated round pipe barrel at a certain welding speed during welding until the welding is completed. The camera can be arranged on the machine head of the internal welding seam welder, and workers can directly see the operation condition of the internal welding seam of the circular tube on the display screen of the operation desk and adjust the operation condition to ensure good welding quality. When external welding is carried out, the machine head of the external seam welder can also be arranged on the fixed cantilever beam, and the round pipe barrel is conveyed by the trolley support to finish the external welding operation. The sealed circular tube after external welding can be sent to a manual inspection rack through a step S41, the internal and external welding seams are inspected manually, the unqualified circular tube is repaired or cut, and then the arc striking plate is cut through a step S42.
According to the present invention, as shown in fig. 1, a detection step for detecting the quality of the weld at the opening is further included between the step four S4 and the step five S5, and the detection step may include the step S81: full length phased array ultrasonic automated inspection of the weld joint, or the inspection step may include steps S81 and S82: and performing full-length phased array ultrasonic automatic flaw detection on the welded seam, and then performing X-ray flaw detection. The detection step is used for detecting the quality of the welding seam according to standard regulations and customer demands, the welding seam is subjected to full-length phased array ultrasonic automatic flaw detection, the detection speed is continuously adjustable by 6-42 m/min, and the running speed of the trolley is adjustable. And further performing X-ray inspection on the inner defects of the welding seam and the pipe ends according to the ultrasonic flaw detection result or the actual requirement.
Further, as shown in fig. 1, after step five S5, step six S6 is further included: chamfering the pipe ends of the round pipe barrel subjected to mechanical expansion, and performing physical test on the round pipe barrel subjected to chamfering. Polishing or chamfering is carried out on the welded aluminum pipe ends, so that chamfering requirements of a leveling machine for the welded pipe ends can be ensured. Preferably, the physical tests can comprise a hydrostatic test S71 and an air tightness test S72, wherein the hydrostatic test S71 is used for carrying out full-length full-automatic pressure resistance test on the welded aluminum pipe, and the test pressure can be 3-20 MPa; the air tightness test S72 is used for carrying out full-length air tightness test on the welded aluminum pipe according to the application of the aluminum alloy pipe and corresponding specification requirements, and the air tightness test method can be used for carrying out pressure maintaining after vacuumizing or filling compressed air.
Further, as shown in fig. 1, step seven S101 may be further included after the physical test: weighing, measuring length and marking the round pipe barrel passing the physical test, and warehousing. In the step, the length measurement can be performed by infrared measurement, the weighing can be performed by an electronic scale, and the finished product is put in storage after the length measurement and the weighing are performed in step S102.
Further, as shown in fig. 1, when the hydrostatic test or the airtight test fails, the defect existing in the round tube is repaired and then returned to the detection step, wherein the round tube which is unqualified in the detection step is repaired in step S83 and then returned to the detection step, and the round tube which is qualified in the detection step is detected to enter step five S5.
In addition, if the end part of the circular tube subjected to mechanical expansion in the fifth S5 is defective, the circular tube can be subjected to cutting in the cutting step S9 and then chamfering is performed; if the pipe end defect exists in the circular pipe barrel after the physical test, the cutting step S9 can be performed, and chamfering can be performed after the cutting.
According to the present invention, as shown in FIG. 1, in step S1, the pretreatment of the aluminum alloy sheet material may include the steps of: after the aluminum alloy plate is fed in the feeding step S11, arc striking plates are welded on four corners of the aluminum alloy steel plate in the arc striking plate welding step S12, so that the welding of the welding starting point and the welding end point is ensured to be uniform, and the defects such as key holes are avoided; s13, performing 100% ultrasonic flaw detection and manual turning plate inspection on the aluminum alloy plate; and (2) carrying out double-sided milling on two opposite side edges of the aluminum alloy plate in step S14 so as to ensure the accurate width and edge shape of the aluminum plate.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (10)
1. A continuous production process of an aluminum alloy welded pipe, comprising:
step one: simultaneously flanging two opposite side edges of the pretreated aluminum alloy plate;
step two: respectively performing pressure forming on two side edges after the flanging so that a half area of the aluminum alloy plate comprising one side edge after the flanging is formed into a semicircular arc, and then forming a half area of the aluminum alloy plate comprising the other side edge into a semicircular arc, thereby finally forming the aluminum alloy plate into a circular tube with an opening in a whole;
step three: pre-welding the opening;
step four: friction stir welding is carried out on the opening subjected to pre-welding;
step five: and (3) mechanically expanding the closed circular pipe barrel formed in the step (IV) to ensure that the circular pipe barrel meets the required inner diameter requirement and simultaneously eliminate welding residual stress.
2. The continuous production process of an aluminum alloy welded pipe according to claim 1, further comprising, between the third step and the fourth step, a step of cleaning the opening after the pre-welding, and a step of heating the opening area or the entire circular tube.
3. The continuous production process of an aluminum alloy welded pipe according to claim 1 or 2, wherein in the step two, the step of forming the half area of the aluminum alloy sheet including any one side after the hemming into a semicircular arc shape comprises: the half-section of the aluminium alloy sheet is located between a support and a forming tool, which is pressed down once per advancing of the half-section of the aluminium alloy sheet on the support.
4. The continuous production process of an aluminum alloy welded pipe according to claim 1 or 2, wherein in the fourth step, the step of friction stir welding the pre-welded opening comprises: the inner welding of the opening on the inside of the round tube is performed first, and the outer welding of the opening on the outside of the round tube is performed later.
5. The continuous production process of an aluminum alloy welded pipe according to claim 1 or 2, further comprising a detection step of quality detection of a weld at the opening between the fourth step and the fifth step, wherein the detection step comprises full-length phased array ultrasonic automatic inspection of the weld, or wherein the detection step comprises full-length phased array ultrasonic automatic inspection of the weld followed by X-ray inspection.
6. The continuous production process of an aluminum alloy welded pipe according to claim 5, further comprising, after the fifth step, a sixth step of: chamfering the pipe end of the circular pipe barrel subjected to mechanical expansion, and performing a physical test on the chamfered circular pipe barrel.
7. The continuous production process of an aluminum alloy welded pipe according to claim 6, further comprising, after the physical test, a step seven: and weighing, measuring the length and marking the round pipe barrel passing the physical test, and warehousing.
8. The continuous production process of aluminum alloy welded pipes according to claim 6, wherein the physical test comprises a hydrostatic test and an airtight test, wherein defects existing in the round tube are repaired and returned to the inspection step again when the hydrostatic test or the airtight test is failed, wherein the round tube which is failed to be inspected in the inspection step is repaired and returned to the inspection step again, and the round tube which is inspected to be qualified in the inspection step is entered into the fifth step.
9. The continuous production process of an aluminum alloy welded pipe according to claim 5, wherein in the step one, the pretreatment of the aluminum alloy sheet material comprises the steps of:
welding arc striking plates on four corners of the aluminum alloy plate;
performing 100% ultrasonic flaw detection and manual turning plate inspection on the aluminum alloy plate;
and carrying out double-sided milling on two opposite side edges of the aluminum alloy plate.
10. The continuous production process of an aluminum alloy welded pipe according to claim 9, further comprising cutting off the arc striking plate after manually pre-inspecting the weld between the fourth step and the detecting step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310596613.5A CN116689541A (en) | 2023-05-23 | 2023-05-23 | Continuous production process of aluminum alloy welded pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310596613.5A CN116689541A (en) | 2023-05-23 | 2023-05-23 | Continuous production process of aluminum alloy welded pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116689541A true CN116689541A (en) | 2023-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310596613.5A Pending CN116689541A (en) | 2023-05-23 | 2023-05-23 | Continuous production process of aluminum alloy welded pipe |
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| Country | Link |
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| CN (1) | CN116689541A (en) |
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2023
- 2023-05-23 CN CN202310596613.5A patent/CN116689541A/en active Pending
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