CN101003052A - Process method for manufacturing seamless aluminum and aluminum alloy pipe - Google Patents
Process method for manufacturing seamless aluminum and aluminum alloy pipe Download PDFInfo
- Publication number
- CN101003052A CN101003052A CN 200710036540 CN200710036540A CN101003052A CN 101003052 A CN101003052 A CN 101003052A CN 200710036540 CN200710036540 CN 200710036540 CN 200710036540 A CN200710036540 A CN 200710036540A CN 101003052 A CN101003052 A CN 101003052A
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- Prior art keywords
- aluminium
- rolling
- aluminium alloy
- alloy pipe
- seamless
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Links
- 238000000034 method Methods 0.000 title claims abstract description 59
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 48
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 47
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 238000005096 rolling process Methods 0.000 claims abstract description 34
- 239000000839 emulsion Substances 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 238000005266 casting Methods 0.000 claims abstract description 12
- 238000005097 cold rolling Methods 0.000 claims abstract description 11
- 239000004411 aluminium Substances 0.000 claims description 40
- 238000000465 moulding Methods 0.000 claims description 10
- 238000002425 crystallisation Methods 0.000 claims description 9
- 230000008025 crystallization Effects 0.000 claims description 9
- 238000009749 continuous casting Methods 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 5
- 238000003801 milling Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000001953 recrystallisation Methods 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 238000012545 processing Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001192 hot extrusion Methods 0.000 description 3
- 238000009490 roller compaction Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Continuous Casting (AREA)
Abstract
The invention discloses a process method for manufacturing seamless aluminum and aluminum alloy tubes, which comprises a forming process method and a continuous recrystallization process method in the forming process, wherein A, the forming process comprises the following steps: casting hollow round aluminum and aluminum alloy ingot, cold rolling with the technological condition of one-time cold rolling area reduction rate not less than 87%; B. the continuous recrystallization process of the forming process is as follows: in the rolling method, the discharge speed of the seamless aluminum and aluminum alloy pipe is 8m/min to 16 m/min; the rolling process also adopts cooling emulsion spraying, and the temperature of the sprayed cooling emulsion is 10-40 ℃. The process method achieves the aim of improving the quality of the product; but also achieves the purpose of no need of secondary heating.
Description
Technical field
The present invention relates to a kind of non-ferrous metal processing, especially a kind of process of making seamless aluminium and aluminium alloy pipe.
Background technology
International the quick-fried of various nonferrous metal prices risen, and brought the step of research and development of the non-ferrous metal substitution material of various relative low price.Is exactly the emphasis that non-ferrous metal processing and manufacturing industry falls over each other to research and develop with aluminium for copper.
Substitute the successful exploitation of copper pipe as automobile and domestic refrigerator refrigeration heat exchanging pipe with aluminum pipe, promoted the paces of using in relevant industries for copper with aluminium greatly.Especially some novel aluminum alloys are developed, and have overcome the difficult problem of the deficiency of aluminium and aluminium alloy pipe intensity effectively.
Applying of aluminium and aluminium alloy pipe must be aggravated the degree of contention in aluminium and aluminium alloy pipe market.And existing aluminium and aluminium alloy pipe extruding or continuous casting manufacture method all exist energy consumption big, and finished product rate hangs down the limitation with the tubing specification; The overall characteristic of its product can't satisfy domestic air conditioning and the water delivery industry of using copper pipe in a large number in existing market.
(publication number: CN1393297), on January 29th, 2003 disclosed " a kind of manufacture method of seamless Al-alloy pipe ", document introduction: a kind of manufacture method of seamless Al-alloy pipe comprises the making of hollow bloom, cold rolling step as Chinese patent.The mode of extrusion casint is adopted in the making of hollow bloom, pipe endoporus steel core rod, mould inner surface and core surface are preheated to 280～320 ℃, pouring temperature is 700～740 ℃, finish to be no more than 4 seconds from casting to the time of repose of pressurization beginning, specific pressure 45～140Mpa, the dwell time is 60～120 seconds.The problem that the manufacture method of above-mentioned seamless Al-alloy pipe exists is: direct cold rolling is out of shape, and does not eliminate the residual stress of product, causes poor product quality.
Chinese patent (publication number: CN1788922) and for example, " a kind of seamless aluminum pipe manufacturing technique; comprise the raw material aluminium ingot being melt into technologies such as aluminium water, casting, pipe stretching, aluminum pipe flaw detection; described casting is that aluminium water is cast into solid aluminium bar; solid aluminium bar carries out sawing, middle hole and the hot extrusion technique of pressing again successively, and the pipe after the hot extrusion stretches through pipe was again disclosed on June 21st, 2006." though above-mentioned technology overcome the residual stress of not eliminating product that the preceding paragraph is described in falling, hot extrusion technique exists solid aluminium bar to need post bake, has increased the energy resource consumption in the manufacture process, causes production cost to increase.
Summary of the invention
At the problems referred to above, the problem that quasi-solution of the present invention is determined provides the process of the low seamless aluminium and aluminium alloy pipe of energy resource consumption in a kind of good product quality, the manufacture process.
For addressing the above problem, the present invention has adopted following technical scheme: a kind of process of making seamless aluminium and aluminium alloy pipe, and it comprises the crystallization processes method more continuously of moulding technique and forming process,
A, described moulding process are: with circular aluminium of casting hollow and aluminium alloy ingots is raw material, with rolling milling method, is not less than 87% process conditions with once cold rolling area decrement and carries out cold rolling;
B, described forming process continuously again crystallization processes be: roll in the milling method described, seamless aluminium and aluminium alloy pipe discharging speed is at 8m/min to 16m/min; Described rolling also adopted cooling emulsion spray in the operation of rolling, the cooling emulsion temperature of described spray is at 10 ℃ to 40 ℃.
The process of the seamless aluminium and aluminium alloy pipe of above-mentioned manufacturing, circular aluminium of described casting hollow and aluminium alloy ingots are horizontal continuous casting method manufacturings, circular aluminium of described casting hollow and aluminium alloy ingots length are 3m to 30m.Behind the described horizontal continuous casting method, circular aluminium of casting hollow and aluminium alloy ingots are carried out homogenizing cast ingot.
The process of the seamless aluminium and aluminium alloy pipe of aforesaid manufacturing is 45～65mm when rolling 40 ℃ of rolling cooling emulsion dynamic viscosities
2/ s.
Adopt above-mentioned process of the present invention, roll rolling once cold rolling area decrement and be not less than 87%, discharging speed is at 8m/min to 16m/min, because the intergranule that aluminium and aluminium alloy pipe is produced because of its rolling deformation process, the frictional heat that the crystal grain internal modification is produced, make the aluminium and aluminium alloy pipe that rolls after rolling rise to 350 ℃ to 500 ℃ rapidly, with cooling emulsion spray, realize the crystallization again of aluminium and aluminium alloy pipe again, improve the quality of product; Solved simultaneously the traditional handicraft method produce seamless aluminium and aluminium alloy again crystallization tubing need the problem of post bake.Saved energy resource consumption, shortened the production cycle, improved production efficiency, for producing the coming of new process of single weight greater than the seamless aluminium and aluminium alloy pipe of 300kg.
The specific embodiment:
Example 1: with the metal trade mark is 1070A, external diameter 88mm, wall thickness 21mm, length are the hollow circular aluminium ingot of the horizontal continuous-casting of 3m, the roll forming speed that rolls by 8m/min is carried out roller-compaction, the seamless aluminium tubing specification of its moulding is (external diameter * wall thickness) 50 * 4.0mm (cold rolling area decrement is 87%), is 40mm during 40 ℃ of the dynamic viscosities of rolling cooling emulsion during its moulding
2/ s, rolling cooling emulsion temperature is implemented the online processing of crystallization heat again at 40 ℃ to rolling rolling back aluminum pipe.Its aluminum pipe that rolls behind the roll forming becomes the perfect recrystallization tissue by rolling rolling preceding cast sturcture.
Example 2: with the metal trade mark is 2A10, external diameter 95mm, wall thickness 25mm, length are the hollow circular aluminium alloy ingots of the horizontal continuous-casting of 10m, under the homogenizing annealing process condition of 480 ℃ * 24h, the roll forming speed that rolls by 12m/min is carried out roller-compaction, the seamless Al-alloy pipe specification of its moulding is (external diameter * wall thickness) 46 * 2.7mm (cold rolling area decrement is 93.3%), is 65mm during 40 ℃ of the dynamic viscosities of rolling cooling emulsion during its moulding
2/ s, rolling cooling emulsion temperature is implemented the online processing of crystallization heat again at 25 ℃ to rolling rolling back aluminium-alloy pipe.Its aluminium-alloy pipe that rolls behind the roll forming becomes the perfect recrystallization tissue by rolling rolling preceding cast sturcture.
Example 3: with the metal trade mark is 3A21, external diameter 95mm, wall thickness 25mm, length are the hollow circular aluminium alloy ingots of the horizontal continuous-casting of 30m, the roll forming speed that rolls by 16m/min is carried out roller-compaction, the seamless Al-alloy pipe specification of its moulding is (external diameter * wall thickness) 46 * 2.7mm (cold rolling area decrement is 93.3%), is 50mm during 40 ℃ of the dynamic viscosities of rolling cooling emulsion during its moulding
2/ s, rolling cooling emulsion temperature is implemented the online processing of crystallization heat again at 10 ℃ to rolling rolling back aluminium-alloy pipe.Its aluminium-alloy pipe that rolls behind the roll forming becomes the perfect recrystallization tissue by rolling rolling preceding cast sturcture.
Above-mentioned cooling emulsion can be commercially available aluminium and aluminum alloy hot rolling emulsion, for saving length, is not described in detail.
Claims (4)
1, a kind of process of making seamless aluminium and aluminium alloy pipe is characterized in that: it comprises the crystallization processes method more continuously of moulding technique and forming process;
A, described moulding process are: with circular aluminium of casting hollow and aluminium alloy ingots is raw material, with rolling milling method, is not less than 87% process conditions with once cold rolling area decrement and rolls rolling;
B, described forming process continuously again crystallization processes be: roll in the milling method described, seamless aluminium and aluminium alloy pipe discharging speed is at 8m/min to 16m/min; Described rolling also adopted cooling emulsion spray in the operation of rolling, the cooling emulsion temperature of described spray is at 10 ℃ to 40 ℃.
2, the process of the seamless aluminium and aluminium alloy pipe of manufacturing according to claim 1 is characterized in that circular aluminium of casting hollow and aluminium alloy ingots are horizontal continuous casting method manufacturings, and circular aluminium of described casting hollow and aluminium alloy ingots length are 3m to 30m;
3, the process of the seamless aluminium and aluminium alloy pipe of manufacturing according to claim 2, it is characterized in that described horizontal continuous casting method after, circular aluminium of casting hollow and aluminium alloy ingots are carried out homogenizing cast ingot.
4. according to the process of claim 1 or the seamless aluminium and aluminium alloy pipe of 2 or 3 described manufacturings, be 45～65mm when it is characterized in that rolling 40 ℃ of rolling cooling emulsion dynamic viscosities
2/ s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710036540 CN101003052A (en) | 2007-01-15 | 2007-01-15 | Process method for manufacturing seamless aluminum and aluminum alloy pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710036540 CN101003052A (en) | 2007-01-15 | 2007-01-15 | Process method for manufacturing seamless aluminum and aluminum alloy pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101003052A true CN101003052A (en) | 2007-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710036540 Pending CN101003052A (en) | 2007-01-15 | 2007-01-15 | Process method for manufacturing seamless aluminum and aluminum alloy pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101003052A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101569893B (en) * | 2009-05-11 | 2012-10-24 | 金龙精密铜管集团股份有限公司 | Manufacturing method of aluminum or aluminum-alloy seamless pipe |
| CN111495976A (en) * | 2020-04-29 | 2020-08-07 | 西安鼎鑫科技新材料有限公司 | Ultra-large-diameter cold pilger mill, seamless tube and production process thereof |
-
2007
- 2007-01-15 CN CN 200710036540 patent/CN101003052A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101569893B (en) * | 2009-05-11 | 2012-10-24 | 金龙精密铜管集团股份有限公司 | Manufacturing method of aluminum or aluminum-alloy seamless pipe |
| CN111495976A (en) * | 2020-04-29 | 2020-08-07 | 西安鼎鑫科技新材料有限公司 | Ultra-large-diameter cold pilger mill, seamless tube and production process thereof |
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