CN1229892A - Method of producing aluminium alloy tube - Google Patents
Method of producing aluminium alloy tube Download PDFInfo
- Publication number
- CN1229892A CN1229892A CN 99113442 CN99113442A CN1229892A CN 1229892 A CN1229892 A CN 1229892A CN 99113442 CN99113442 CN 99113442 CN 99113442 A CN99113442 A CN 99113442A CN 1229892 A CN1229892 A CN 1229892A
- Authority
- CN
- China
- Prior art keywords
- aluminium bar
- annealing
- agent
- aluminium
- minutes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 22
- 238000000137 annealing Methods 0.000 claims abstract description 18
- 238000004140 cleaning Methods 0.000 claims abstract description 9
- 238000000265 homogenisation Methods 0.000 claims abstract description 7
- 238000003723 Smelting Methods 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 41
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound 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- 239000004411 aluminium Substances 0.000 claims description 40
- 239000003795 chemical substances by application Substances 0.000 claims description 22
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- 239000000843 powder Substances 0.000 claims description 16
- -1 titanium boron Chemical compound 0.000 claims description 12
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- PWHULOQIROXLJO-UHFFFAOYSA-N manganese Chemical compound 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- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical group 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[Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound 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[Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000009856 non-ferrous metallurgy Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 239000006025 fining agent Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000001149 thermolysis Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Abstract
A method for manufacturing Al-alloy tube used as the heat radiating part of car's water tank, air conditioner and air warmer includes smelting, homogenization, drilling, turnkng, squeezing, annealing, processing finished tube, cleaning and heat treatment. The Al-alloy tube features softer both ends and hard central part, no need of welding, beautiful appearance, and high strength.
Description
The present invention relates to a kind of metal tube manufacture method, is the Al-alloy pipe production method of a kind of radiator, motorcar air conditioner, automobile warm-air device heat transmission specifically.
At present, the tubing of radiator, motorcar air conditioner, automobile warm-air device heat transmission mostly is copper pipe.Adopt copper pipe, though also can play thermolysis, because copper pipe hardness is higher, be difficult to bending, meeting the corner when installing and using needs welding, not only is difficult to install, and the radiator profile of making is not attractive in appearance yet.For this reason, abroad some manufacturers have developed a kind of Al-alloy pipe, and whole of this Al-alloy pipe is soft state.When this tubing is installed, meet that turn round can be crooked, need not weld, easily install.But because its whole be soft state, make that the product bulk strength of making is not high, easily deform and damage.
The object of the present invention is to provide a kind of production method of Al-alloy pipe, the Al-alloy pipe that utilizes this method to produce need not weld during installation, easily installation, beautiful shape, bulk strength height, not yielding and damage.For achieving the above object, the present invention adopts following technical solution:
The production method of Al-alloy pipe of the present invention may further comprise the steps:
(1) melting
Earlier aluminium ingot is placed smelting furnace to make its fusing, when stirring, take dregs off; Then, add manganese, iron, titanium valve, wait for and stirring after 20～30 minutes; When evenly stirring, add refine agent and titanium boron line again, and static 10～20 minutes; At last, under 650～750 ℃ temperature, be cast into aluminium bar;
Wherein, the weight portion proportioning of aluminium ingot, manganese powder, iron powder, titanium valve, refine agent and the agent of titanium boron is: 95～105 parts of aluminium ingots, 0.8～1.6 part of manganese powder, 0.3～1.2 part of iron powder, titanium valve .0.04～0.06 part, 0.01～0.025 part of refine agent, 0.02～0.08 part of titanium boron agent;
(2) homogenization is handled
Aluminium bar is placed 550～650 ℃ oven, be incubated 360～900 minutes;
(3) boring
Aluminium bar after the homogenization is holed, make it become hollow aluminium bar;
(4) railway carriage
Car goes the oxide layer on hollow aluminium bar surface;
(5) extruding
The hollow aluminium bar of car deoxidation layer inserted in the oven it is heated, meanwhile extrusion press mould tube is heated, when the temperature of hollow aluminium bar in the oven and extrusion press mould tube is respectively 350～450 ℃ and 300～480 ℃, hollow aluminium bar sent in the extrusion press push, make it form the base pipe;
(6) annealing
It is in 300～650 ℃ the oven that the base pipe is inserted temperature, keeps 20～720 minutes, carries out annealing in process;
(7) production tube processing
Adopt the metal extension method, the base pipe of annealed processing is drawn into production tube;
(8) clean
Production tube is cleaned, remove its inside and outside aluminium bits and residue;
(9) heat treatment
Under 400～650 ℃ furnace temperature,, make its two ends and centre be soft, hard state respectively with annealing furnace to annealing through the production tube two ends of cleaning.
Because the aluminum pipe two ends and the centre that utilize method of the present invention to produce are soft, hard state respectively, meet the corner during installation, can make its bending by hand, need weld, easily install, beautiful shape; In addition, because the centre of this tubing still is hard state, the bulk strength height, not yielding and damage.
Below in conjunction with embodiment the present invention is described in further detail:
Al-alloy pipe production method of the present invention is:
(1) melting.Earlier aluminium ingot is placed in the smelting furnace, electricity consumption or fuel oil heat, and make its fusing.When stirring, take dregs off.Then, add manganese, iron, titanium valve, wait for and stirring after 20 minutes.When evenly stirring, add refine agent (6A that nonferrous metallurgy Materials Co., Ltd of Fushi section of Shenzhen gold section produces, 6B type gold Kent refine agent) and titanium boron agent (the II titanium boron fining agent that Shenzhen Jin Kefu ± nonferrous metallurgy Materials Co., Ltd of section produces) again, and static 15 minutes.At last, when reaching 700 ℃, the aluminium coolant-temperature gage is cast into aluminium bar.
Wherein, the weight portion proportioning of aluminium ingot, manganese powder, iron powder, titanium valve, refine agent and the agent of titanium boron is: 95～105 parts of aluminium ingots, 0.8～1.6 part of manganese powder, 0.3～1.2 part of iron powder, 0.04～0.06 part of titanium valve, 0.01～0.025 part of refine agent, 0.02～0.08 part of titanium boron agent; Their preferred weight ratio range is: 98～104 parts of aluminium ingots, 0.8～1.4 part of manganese powder, 0.5～1.0 part of iron powder, 0.03～0.05 part of titanium valve, 0.01～0.023 part of refine agent, 0.03～0.06 part of titanium boron agent; Their optimum weight part proportioning is: 100 parts of aluminium ingots, 1.3 parts of manganese powders, 0.8 part of iron powder, 0.05 part of titanium valve, 0.02 part of refine agent, 0.05 part of titanium boron agent.
(2) homogenization is handled.Aluminium bar is packed in the cabinet-type electric furnace (also useable fuel stove or induction furnace), when furnace temperature is 600 ℃, constant temperature 600 minutes.
(3) boring.Use drilling machine that the aluminium bar through homogenization is holed (if direct pouring becomes hollow aluminium bar during melting, the boring step can be omitted), make it become hollow aluminium bar.
(4) railway carriage.Go the oxide layer on hollow aluminium bar surface with the lathe car.
(5) extruding.The hollow aluminium bar of car deoxidation layer is put into cabinet-type electric furnace (also useable fuel stove or induction furnace), and it is heated.Simultaneously, also extrusion press mould tube is heated.When the temperature of the temperature of hollow aluminium bar and the letter of extrusion press mould is respectively 400 ℃ and 390 ℃, hollow aluminium bar is taken out from cabinet-type electric furnace, put into extrusion press mould tube, it is pushed, make it form the base pipe.
(6) annealing.The base pipe is put into cabinet-type electric furnace, when furnace temperature reaches 500 ℃, be incubated 20～720 minutes.The length of holding time is decided on base external diameter of pipe, wall thickness.Base external diameter of pipe in the present embodiment is that φ 15mm, wall thickness are 0.8mm, and holding time is 360 minutes.
(7) production tube processing.Adopt the metal extension method, the base pipe after annealing in process is made production tube.Metal extension method wherein can be a pulling method, also cold-rolling practice.What present embodiment adopted is pulling method, and soon the base pipe is placed on and carries out the multiple tracks stretching on the cold drawn car.In drawing process, still semifinished tube should be carried out annealing in process, annealing temperature is 450 ℃.Afterwards, stretch again.Until the pipe that it is pulled into trimmed size.Then, align, and detect, reject substandard products with eddy current flaw detec or Other Instruments with straightening machine.
As adopting cold-rolling practice, effective single roller of base or multi-roll mill after then will annealing are rolled.In the operation of rolling, also need semi-finished product to be carried out annealing in process with cabinet-type electric furnace or raceway stove.Annealing temperature wherein is 450 ℃.Afterwards, be rolled again, until the production tube of making required specification.
(8) clean.With kerosene (or other washing agent) production tube is cleaned, remove its inside and outside aluminium bits and residue.
(9) heat treatment.Split is inserted at the two ends of production tube successively walk in the formula annealing furnace, annealing in process is carried out at its two ends, make its two ends and centre be soft, hard state respectively.Furnace temperature wherein is 520 ℃, and the walking speed of production tube is 100cm/ minute.
Claims (3)
1. the production method of an Al-alloy pipe is characterized in that may further comprise the steps:
(1) melting
Earlier aluminium ingot is placed smelting furnace to make its fusing, when stirring, take dregs off; Then, add manganese, iron, titanium valve, wait for and evenly stirring after 20～30 minutes; When evenly stirring, add refine agent and titanium boron line again, and static 10～20 minutes; At last, under 650～750 ℃ temperature, be cast into aluminium bar;
Wherein, the weight portion proportioning of aluminium ingot, manganese powder, iron powder, titanium valve, refine agent and the agent of titanium boron is: 95～105 parts of aluminium ingots, 0.8～1.6 part of manganese powder, 0.3～1.2 part of iron powder, titanium valve .0.04～0.06 part, 0.01～0.025 part of refine agent, 0.02～0.08 part of titanium boron agent;
(2) homogenization is handled
Aluminium bar is placed 550～650 ℃ oven, be incubated 360～900 minutes;
(3) boring
Aluminium bar after the homogenization is holed, make it become hollow aluminium bar;
(4) railway carriage
Car goes the oxide layer on hollow aluminium bar surface;
(5) extruding
The hollow aluminium bar of car deoxidation layer inserted in the oven it is heated, meanwhile extrusion press mould tube is heated, when the temperature of hollow aluminium bar in the oven and extrusion press mould tube is respectively 350～450 ℃ and 300～480 ℃, hollow aluminium bar sent in the extrusion press push, make it form the base pipe;
(6) annealing
It is in 300～650 ℃ the oven that the base pipe is inserted temperature, keeps 20～720 minutes, carries out annealing in process;
(7) production tube processing
Adopt the metal extension method, the base pipe of annealed processing is drawn into production tube;
(8) clean
Production tube is cleaned, remove its inside and outside aluminium bits and residue;
(9) heat treatment
Under 400～650 ℃ furnace temperature,, make its two ends and centre be soft, hard state respectively with annealing furnace to annealing through the production tube two ends of cleaning.
2. method according to claim 1 is characterized in that described metal extension method is a pulling method.
3. method according to claim 1 is characterized in that described metal extension method is a cold-rolling practice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99113442 CN1098987C (en) | 1999-01-27 | 1999-01-27 | Method of producing aluminium alloy tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99113442 CN1098987C (en) | 1999-01-27 | 1999-01-27 | Method of producing aluminium alloy tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1229892A true CN1229892A (en) | 1999-09-29 |
| CN1098987C CN1098987C (en) | 2003-01-15 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99113442 Expired - Lifetime CN1098987C (en) | 1999-01-27 | 1999-01-27 | Method of producing aluminium alloy tube |
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| Country | Link |
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| CN (1) | CN1098987C (en) |
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| CN100391687C (en) * | 2005-08-01 | 2008-06-04 | 沈阳华铁异型材有限公司 | Production technology of grease cooler air chamber and its product |
| CN101712116B (en) * | 2008-10-06 | 2011-08-24 | 程拥军 | Process for manufacturing high-strength large-scale aluminum alloy plate |
| CN102166712A (en) * | 2010-12-31 | 2011-08-31 | 东莞市东兴铝材制造有限公司 | Hot extrusion production process for aluminum tube with polished surface |
| CN102489540A (en) * | 2011-11-21 | 2012-06-13 | 浙江中盛铝业有限公司 | Method for manufacturing antirust aluminum alloy round tubes and flat tubes for automobile radiator and air conditioner condenser |
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