CN104668307A - Production method for high-strength super-large diameter thin-walled pressure-resistant aluminum alloy pipe - Google Patents
Production method for high-strength super-large diameter thin-walled pressure-resistant aluminum alloy pipe Download PDFInfo
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- CN104668307A CN104668307A CN201510118193.5A CN201510118193A CN104668307A CN 104668307 A CN104668307 A CN 104668307A CN 201510118193 A CN201510118193 A CN 201510118193A CN 104668307 A CN104668307 A CN 104668307A
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- aluminum alloy
- large diameter
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- diameter thin
- mpa
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Classifications
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- 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
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1225—Particular aspects of welding with a non-consumable tool
-
- 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
- B23K2101/06—Tubes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a production method for a high-strength super-large diameter thin-walled pressure-resistant aluminum alloy pipe. The production method comprises the following steps: (1) material preparation; (2) solid solution quenching of a hot-rolled plate; (3) tube curling or coiling rolling; (4) friction stirring welding; (5) reshaping; (6) aging treatment; (7) pressure resistance testing. The total duration of step (3) to step (5) is required to be 36 hours after solid solution quenching. The aluminum alloy pipe produced by the method is high in weld strength and high in weld consistency, pipeline roundness and internal pressure resistance; after various series of typical alloys are treated by the method and the process, the minimum yield strength of a weld of the pipe and allowable internal pressure resistance (suitable for gas and liquid) are as follows: (1) 2XXX, sigma0.2 is more than equal to 288 Mpa, and P internal pressure is more than or equal to 15 Mpa; (2), 6XXX, sigma0.2 is more than or equal to 200 Mpa, and P internal pressure is more than or equal to 10 Mpa; (3) 7XXX, sigma0.2 is more than or equal to 385 Mpa, and P internal pressure is more than or equal to 20 Mpa.
Description
Technical field:
The technical field of the invention is non-ferrous metals processing field, provides a kind of diameter more than the production method of the high-strength aluminum alloy thin wall overpressure resistant pipeline of Φ 800mm.
Technical background:
The production method of aluminium alloy pipeline normally extrudes, spinning etc., extruding be squeezed efficiency, extrude the restriction of when extrusion equipment etc., the wall thickness that can extrude in the world at present is also no more than Φ 700mm at the maximum gauge of 10 ~ 50mm.Spinning can the enlarged diameter of extruded tube, but the length that can process is restricted, and efficiency is also lower, therefore, is also not suitable for producing thin-wall pipes in enormous quantities.Current large diameter thin-wall steel tube is often produced by the method for welding; due to the melting better performances of steel, particularly mild steel melting performance is good, and the method connect with gas-shield automatic welding can obtain high-quality weld seam; therefore, large diameter steel pipe is all produced by the method for melting usually.But the melting poor-performing of aluminium alloy, particularly the usual alloy content of high-strength aluminum alloy is higher, the performance of its molten solder is poorer, especially throat thickness is more than after about 20mm, melting is more difficult to get high-quality weld seam, and the welding coefficient of Weld Performance only has less than 0.5 ~ 0.6 usually, particularly when weld seam is longer, more seldom arrive the weld seam of the stable performance of uniform quality, for this reason, a kind of welding method of high reliability must be had to ensure the welding performance of high-strength aluminum alloy and the welding performance uniformity of long weld seam, agitating friction welding just can solve this difficult problem, its seam organization is fine and close, crystal grain is tiny, steady quality during long distance welding, and welding coefficient can be stablized and reaches about 0.8 ~ 0.9, be best suited for the Welded method in there being certain throat thickness, be equipped with rational production technology and heat treatment again, then can produce the high voltage bearing aluminium alloy pipeline of high strength.
Summary of the invention:
The object of this invention is to provide a kind of production method of high-strength aluminum alloy super-large diameter thin wall overpressure resistant pipe.
A production method for high-strength aluminum alloy super-large diameter thin wall overpressure resistant pipe, its step is as follows:
(1) material prepares: hot rolling plate;
(2) hot rolled plate is carried out solution hardening: solid solubility temperature (450-550) DEG C, temperature retention time (30 ~ 60) min, adopt heating solution hardening at the bottom of roller to complete solid solution;
(3) roll up or roll reel: hot rolled plate is carried out curling or rolling on veneer reeling machine, making it be rolled into a circular cylinder; This operation completes in 12 hours after solution hardening;
(4) agitating friction welding: first weld clip is specifically arranged on the workbench of friction stir welding machine, again the aluminium alloy tubular body being rolled into cylinder is arranged on the positioning core axle on clamp body, make commissure in the Up Highway UHW position of positioning core axle simultaneously, with clamping device, aluminium alloy tubular body is clamped on positioning core axle; Adjust stirring-head position, make it be welded to the other end from one end of weld seam;
(5) shaping: again carried out by the pipeline completing solution hardening rolling up circle process on veneer reeling machine, thus realize shaping, this operation completes in 36 hours after quenching;
(6) Ageing Treatment, technological parameter is: (120-170) DEG C × (12 ~ 20h);
(7) withstand voltage test;
The total linear spacing time of described step (3)-(5) must complete in 36 hours after solution hardening.
As preferably, described high-strength aluminum alloy is 2XXX or 6XXX or 7XXX line aluminium alloy.
As preferably, described clamping device is circular clamp and Hydraulic Clamping Mechanism.
As preferably, the diameter range of described super-large diameter thin wall overpressure resistant pipe is more than Φ 800mm, pipeline wall thickness 20 ~ 60mm.
As preferably, the specification (long × wide × thick) of described hot rolling plate is (2000 ~ 24000) mm × (2550-4700) mm × (20-60) mm.
Adopt the aluminium-alloy pipe that the inventive method is produced, weld strength is good, and weld seam uniformity is good, and pipeline circularity is good, ultrasonic examination zero defect, greatly withstand voltage in pipe.Each serial exemplary alloy is after the method and technique, and it is as follows that interior withstand voltage (suitable gas and liquid) is managed in the minimum yield strength of tubing weld seam and permission: 1. 2XXX, σ
0.2>=288Mpa, P
interior pressure>=15Mpa; 2. 6XXX, σ
0.2>=200Mpa, P
interior pressure>=10Mpa; 3. 7XXX, σ
0.2>=385Mpa, P
interior pressure>=20Mpa.
Accompanying drawing explanation
Fig. 1 is welder schematic diagram;
Fig. 2 is the A-A left view in Fig. 1.
Detailed description of the invention:
Embodiment 1 7075 aluminium-alloy pipe welds
(1) material prepares: specification (long × wide × thick) is 6600mm × 2800mm × 32mm hot rolling plate;
(2) hot rolled plate is carried out solution hardening, solution hardening technological parameter is: solid solubility temperature 470 DEG C, temperature retention time 30min, adopts heating solution hardening at the bottom of roller to complete solid solution;
(3) hot rolled plate is carried out curling (or rolling) on special large-scale veneer reeling machine, make it be rolled into a circular cylinder, reel effective internal diameter Φ 860mm; This operation completes in 6 hours after quenching.
(4) first concrete for weld clip 1 (showing as shown in Figure 1, Figure 2) is arranged on the workbench 9 of friction stir welding machine, again the aluminium-alloy pipe 6 being rolled into cylinder is arranged on the positioning core axle 3 of weld clip concrete 1, make weld seam 5 be in the Up Highway UHW position of positioning core axle 3 simultaneously, by special circular clamp 8 and Hydraulic Clamping Mechanism 7, aluminium-alloy pipe 6 is clamped on positioning core axle 3.
(5) adjust the position of stirring-head 2, make it be welded to the other end from one end of weld seam, welding condition is: welding rotating speed 1750rpm, translational speed 250mm/min, effective depth of weld 31.4mm.
(6) again carried out by the pipeline completing solution hardening rolling up circle process on special veneer reeling machine, thus realize shaping, this operation completes in 12 hours after quenching.
(7) Ageing Treatment, technological parameter is: 120 DEG C × (16 ~ 18h).
(8) withstand voltage test.
Through the aluminium-alloy pipe that above-mentioned technical process is produced, weld strength reaches σ
b=478Mpa, σ
0.2=402Mpa, weld seam uniformity is good, and pipeline circularity is good, withstand voltage more than 26Mpa in pipe.
Embodiment 2 6061 aluminium-alloy pipe welds
(1) material prepares: specification (long × wide × thick) is 6600mm × 3940mm × 55mm hot rolling plate;
(2) hot rolled plate is carried out solution hardening, solution hardening technological parameter is: solid solubility temperature 535 DEG C, temperature retention time 30min, adopts heating solution hardening at the bottom of roller to complete solid solution;
(3) hot rolled plate is carried out curling (or rolling) on special large-scale veneer reeling machine, make it be rolled into a circular cylinder, reel effective internal diameter Φ 1200mm; This operation completes in 12 hours after quenching.
(4) first concrete for weld clip 1 (showing as shown in Figure 1, Figure 2) is arranged on the workbench 9 of friction stir welding machine, again the aluminium-alloy pipe 6 being rolled into cylinder is arranged on the positioning core axle 3 of weld clip concrete 1, make weld seam 5 be in the Up Highway UHW position of positioning core axle 3 simultaneously, by special circular clamp 8 and Hydraulic Clamping Mechanism 7, aluminium-alloy pipe 6 is clamped on positioning core axle 3.
(5) adjust the position of stirring-head 2, make it be welded to the other end from one end of weld seam, welding condition is: welding rotating speed 2250rpm, translational speed 300mm/min, depth of weld 54.4mm.
(6) again carried out by the pipeline completing solution hardening rolling up circle process on special veneer reeling machine, thus realize shaping, this operation completes in 24 hours after quenching.
(7) Ageing Treatment, technological parameter is: 165 DEG C × (12 ~ 16h).
(8) withstand voltage test.
Through the aluminium-alloy pipe that above-mentioned technical process is produced, weld strength reaches σ
b=270Mpa, σ
0.2=189.5Mpa, weld seam uniformity is good, and pipeline circularity is good, withstand voltage more than 15Mpa in pipe.
Embodiment 3 2024 aluminium-alloy pipe welds
(1) material specification (long × wide × thick) is 6000mm × 3266mm × 40mm hot rolling plate one piece.
(2) hot rolled plate is carried out roller-bottom type heating solution hardening, technological parameter is: solid solubility temperature 502 DEG C, temperature retention time 30min.
(3) carry out curling (or rolling) on special large-scale veneer reeling machine, make it be rolled into a circular cylinder, reel effective internal diameter Φ 1000mm; This operation completes in 8 hours after quenching.
(4) first concrete for weld clip 1 (showing as shown in Figure 1, Figure 2) is arranged on the workbench 9 of friction stir welding machine, again the aluminium-alloy pipe 6 being rolled into cylinder is arranged on the positioning core axle 3 of weld clip concrete 1, make weld seam 5 be in the Up Highway UHW position of positioning core axle 3 simultaneously, by special circular clamp 8 and Hydraulic Clamping Mechanism 7, aluminium-alloy pipe 6 is clamped on positioning core axle 3.
(5) adjust the position of stirring-head 2, make it be welded to the other end from one end of weld seam, welding condition is: welding rotating speed 2000rpm, translational speed 300mm/min, depth of weld 39.2mm.
(6) again carried out by the pipeline completing solution hardening rolling up circle process on special veneer reeling machine, thus realize shaping, this operation completes in 36 hours after quenching.
(7) Ageing Treatment, technological parameter is: 170 DEG C × (16 ~ 18h).
(8) withstand voltage test.
Through the aluminium-alloy pipe that above-mentioned technical process is produced, weld strength reaches σ
b=372Mpa, σ
0.2=275Mpa, weld seam uniformity is good, and pipeline circularity is good, withstand voltage more than 19Mpa in pipe.
Claims (5)
1. a production method for high-strength aluminum alloy super-large diameter thin wall overpressure resistant pipe, is characterized in that, its step is as follows:
(1) material prepares: hot rolling plate;
(2) hot rolled plate is carried out solution hardening: solid solubility temperature (450-550) DEG C, temperature retention time (30 ~ 60) min, adopt heating solution hardening at the bottom of roller to complete solid solution;
(3) roll up or roll reel: hot rolled plate is carried out curling or rolling on veneer reeling machine, making it be rolled into a circular cylinder; This operation completes in 12 hours after solution hardening;
(4) agitating friction welding: first weld clip is specifically arranged on the workbench of friction stir welding machine, again the aluminium alloy tubular body being rolled into cylinder be arranged on weld clip concrete on positioning core axle on, make commissure in the Up Highway UHW position of positioning core axle simultaneously, with clamping device, aluminium alloy tubular body is clamped on positioning core axle; Adjust stirring-head position, make it be welded to the other end from one end of weld seam;
(5) shaping: again carried out by the pipeline completing solution hardening rolling up circle process on veneer reeling machine, thus realize shaping, this operation completes in 36 hours after quenching;
(6) Ageing Treatment, technological parameter is: (120-170) DEG C × (12 ~ 20h);
(7) withstand voltage test
The total linear spacing time of described step (3)-(5) must complete in 36 hours after solution hardening.
2. the production method of high-strength aluminum alloy super-large diameter thin wall overpressure resistant pipe according to claim 1, is characterized in that, described high-strength aluminum alloy is 2XXX or 6XXX or 7XXX line aluminium alloy.
3. the production method of high-strength aluminum alloy super-large diameter thin wall overpressure resistant pipe according to claim 1 and 2, it is characterized in that, described clamping device is circular clamp and Hydraulic Clamping Mechanism.
4. the production method of high-strength aluminum alloy super-large diameter thin wall overpressure resistant pipe according to claim 1 and 2, is characterized in that, the diameter range of described super-large diameter thin wall overpressure resistant pipe is more than Φ 800mm, pipeline wall thickness 20 ~ 60mm.
5. the production method of high-strength aluminum alloy super-large diameter thin wall overpressure resistant pipe according to claim 1 and 2, it is characterized in that, the specification (long × wide × thick) of described 6XXX hot rolling plate is (2000 ~ 24000) mm × (2550-4700) mm × (20-60) mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510118193.5A CN104668307A (en) | 2015-03-14 | 2015-03-14 | Production method for high-strength super-large diameter thin-walled pressure-resistant aluminum alloy pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510118193.5A CN104668307A (en) | 2015-03-14 | 2015-03-14 | Production method for high-strength super-large diameter thin-walled pressure-resistant aluminum alloy pipe |
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| Publication Number | Publication Date |
|---|---|
| CN104668307A true CN104668307A (en) | 2015-06-03 |
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ID=53304189
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510118193.5A Pending CN104668307A (en) | 2015-03-14 | 2015-03-14 | Production method for high-strength super-large diameter thin-walled pressure-resistant aluminum alloy pipe |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052561A (en) * | 2017-04-01 | 2017-08-18 | 江苏安靠智能输电工程科技股份有限公司 | A kind of GIL/GIS buses housing and its stirring friction-welding technique |
| CN107214399A (en) * | 2017-07-26 | 2017-09-29 | 南通振华重型装备制造有限公司 | A kind of steel cylinder Slab element board-splicing process |
| CN107570862A (en) * | 2017-10-20 | 2018-01-12 | 广西南南铝加工有限公司 | A kind of 6 line aluminium alloy agitating friction welded unit preparation technologies |
| CN109112448A (en) * | 2018-07-27 | 2019-01-01 | 合肥神诺机械有限公司 | A kind of deflector roll heat treatment process |
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2015
- 2015-03-14 CN CN201510118193.5A patent/CN104668307A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052561A (en) * | 2017-04-01 | 2017-08-18 | 江苏安靠智能输电工程科技股份有限公司 | A kind of GIL/GIS buses housing and its stirring friction-welding technique |
| CN107052561B (en) * | 2017-04-01 | 2019-01-15 | 江苏安靠智能输电工程科技股份有限公司 | A kind of GIL/GIS bus shell and its stirring friction-welding technique |
| CN107214399A (en) * | 2017-07-26 | 2017-09-29 | 南通振华重型装备制造有限公司 | A kind of steel cylinder Slab element board-splicing process |
| CN107570862A (en) * | 2017-10-20 | 2018-01-12 | 广西南南铝加工有限公司 | A kind of 6 line aluminium alloy agitating friction welded unit preparation technologies |
| CN107570862B (en) * | 2017-10-20 | 2019-10-29 | 广西南南铝加工有限公司 | A kind of 6 line aluminium alloy Friction Stir Welding component preparation processes |
| CN109112448A (en) * | 2018-07-27 | 2019-01-01 | 合肥神诺机械有限公司 | A kind of deflector roll heat treatment process |
| CN109112448B (en) * | 2018-07-27 | 2020-07-24 | 苏州力华米泰克斯胶辊制造有限公司 | Guide roller heat treatment process |
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Application publication date: 20150603 |
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