CN106011564A - Coarse ring-free aluminum alloy bar and preparation method thereof - Google Patents
Coarse ring-free aluminum alloy bar and preparation method thereof Download PDFInfo
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- CN106011564A CN106011564A CN201610592367.6A CN201610592367A CN106011564A CN 106011564 A CN106011564 A CN 106011564A CN 201610592367 A CN201610592367 A CN 201610592367A CN 106011564 A CN106011564 A CN 106011564A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
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Abstract
The invention discloses a coarse ring-free aluminum alloy bar. The coarse ring-free aluminum alloy bar is prepared from the following components in percentage by weight: 0.62 to 0.7 percent of Si, 0.3 to 0.4 percent of Fe, 0.2 to 0.35 percent of Cu, 0.1 to 0.15 percent of Mn, 0.9 to 0.98 percent of Mg, 0.15 to 0.25 percent of Cr, 0.25 percent of Zn, 0.06 to 0.13 percent of Ti and the balance of Al. According to the coarse ring-free aluminum alloy bar disclosed by the invention, the addition range of Cr and Mn elements is strictly controlled on the basis of 6061 aluminum alloy specified in the national standard GB/T3191-2010, and the Cr and Mn elements have a function of inhibiting grain expansion in the aluminum alloy; the temperatures of a die, a cast ingot and an extrusion container can be controlled during a follow-up extrusion process, so that the shear deformation of a material during extrusion is reduced; an arc-shaped die bearing is adopted, so that the material flowing dead zone of an extrusion die is reduced; by using the produced 6061 aluminum alloy bar, a coarse ring cannot be fundamentally seen, the mechanical performance of a material and the oxidation performance of a product are greatly increased, the color of the material is consistent after an anode is oxidized, and the coarse ring-free aluminum alloy bar has no defects of piebaldness and the like.
Description
Technical field
The present invention relates to a kind of without coarse grain ring rods and bars of aluminium alloy and preparation method thereof.
Background technology
6061 aluminium alloys in GB/T3191-2010 have a preferable processing characteristics, medium by force
Degree, weldability, and there is the characteristics such as corrosion resistance is high, be widely used in manufacturing aircraft,
The section bar of the high request such as steamer, automobile, bar.Along with automotive light weight technology designs, 6061 aluminum
Alloy usage amount on automobile increases therewith, but during hot extrusion and quenching, holds
Being easily generated coarse grain ring, make product mechanical properties decrease, intensity, hardness reduces, anodic oxidation type
There is piebaldism in material surface, and coloring aberration is obvious, have impact on the serviceability of material.
Summary of the invention
The technical problem to be solved in the present invention is the defect overcoming prior art, it is provided that a kind of without thick
Brilliant ring rods and bars of aluminium alloy and preparation method thereof.
In order to solve above-mentioned technical problem, the invention provides following technical scheme:
One of the present invention is without coarse grain ring rods and bars of aluminium alloy, and it includes each group of following percentage by weight
Point: Si-0.62～0.7%, Fe-0.3～0.4%, Cu-0.2～0.35%, Mn-0.1～0.15%,
Mg-0.9～0.98%, Cr-0.15～0.25%, Zn-0.25%, Ti-0.06～0.13%, surplus is
Al。
Further, including each component of following percentage by weight: Si-0.62%, Fe-0.3%,
Cu-0.2%, Mn-0.1%, Mg-0.9%, Cr-0.15%, Zn-0.25%, Ti-0.06%, remaining
Amount is Al.
Further, including each component of following percentage by weight: Si-0.7%, Fe-0.4%,
Cu-0.35%, Mn-0.15%, Mg-0.98%, Cr-0.25%, Zn-0.25%, Ti-0.13%,
Surplus is Al.
Another aspect of the present invention discloses the preparation side of a kind of rods and bars of aluminium alloy without coarse grain ring
Method, it comprises the steps:
S1, fusing: be heated up to 720～760 DEG C in aluminium ingot is put into stove and melt；
S2, skim: temperature when 735 ± 25 DEG C with in slagging agent is spilled into stove uniformly and fill
Dividing stirring 5-10 minute, wherein, the addition of slagging agent is added by the amount of 0.3KG per ton,
And aluminum liquid surface scum is removed；Melt temperature 730～add when 760 DEG C copper, silicon, manganese, ferrum,
Titanium, magnesium, chromium, above alloy addition sequence is in no particular order；10～15 are stirred after adding alloy
Each uniform ingredients mixing in minute making melt；
S3, refine: use high-purity argon gas injection refining during melt temperature 720-740 DEG C, wherein
Argon content more than 99.7%；Refining time is 40～50 minutes, and injection refining agent consumption is
1.5～2 kgs/tonne of aluminum；After refine is complete, liquid level scum silica frost is removed；After refine, melt stands 20 points
Clock；
S4, casting: melt temperature is that to be cast into ingot casting when 720～760 DEG C standby；Casting cycle
Ingot casting crystal grain is refined by middle addition aluminum titanium boron line, and adding speed is 2m/min～3m/min；Watering
On casting chute, online refine, is passed through high-purity argon gas, argon content more than 99.7% during refine；?
Rear employing 30PPi and 50PPi double-layer ceramic filter plate purifies melt further, finally obtains
To ingot casting；
S5, homogenize: ingot casting step S4 obtained is warmed to 570 ± 10 DEG C, be incubated 8～10
Hour, the rear cooling chamber that enters uses spray cooling, obtains ingot casting after homogenizing；
S6, extruding: use the extrusion die of band circular arc work strip, heat extrusion die, add
Hot temperature 470 DEG C～490 DEG C, ingot casting is heated to 460 DEG C～520 DEG C and enters recipient extruding, squeezes
Pressure cylinder preheating temperature 390 DEG C～440 DEG C；It is directly entered tank at extrusion material, utilizes extruding
Immediate quenching；Gained bar artificial aging will be extruded above process, aging temp 165 DEG C
～185 DEG C, it is incubated 8 hours；Finally give finished product.
The present invention is reached to provide the benefit that:
On the basis of 6061 aluminium alloys that the present invention specifies in GB GB/T3191-2010, sternly
Lattice control the addition scope of Cr and Mn element, and Cr element and Mn serve in aluminium alloy
The effect of containment crystal grain swell.Subsequent extrusion process control mould, ingot casting and the temperature of recipient
Degree, makes the detrusion of material during extruding reduce, and uses circular arc work strip mould, reduces extruding
Mold materials flowing dead band.6061 rodss and bars of aluminium alloy produced by the present invention are substantially not visible
There is coarse grain ring, substantially increase the mechanical property of material, and the oxidation susceptibility of product, anode
Oxidized material color and luster is consistent, without defects such as piebaldisms.
Detailed description of the invention
Hereinafter the preferred embodiments of the present invention are illustrated, it will be appreciated that described herein
Preferred embodiment is merely to illustrate and explains the present invention, is not intended to limit the present invention.
Embodiment 1
One of the present invention is without coarse grain ring rods and bars of aluminium alloy, and it includes each group of following percentage by weight
Point: Si-0.62～0.7%, Fe-0.3～0.4%, Cu-0.2～0.35%, Mn-0.1～0.15%,
Mg-0.9～0.98%, Cr-0.15～0.25%, Zn-0.25%, Ti-0.06～0.13%, surplus is
Al。
Embodiment 2
One of the present invention is without coarse grain ring rods and bars of aluminium alloy, and it includes each group of following percentage by weight
Point:
Si-0.62%, Fe-0.3%, Cu-0.2%, Mn-0.1%, Mg-0.9%, Cr-0.15%,
Zn-0.25%, Ti-0.06%, surplus is Al.
Embodiment 3
One of the present invention is without coarse grain ring rods and bars of aluminium alloy, and it includes each group of following percentage by weight
Point:
Si-0.7%, Fe-0.4%, Cu-0.35%, Mn-0.15%, Mg-0.98%, Cr-0.25%,
Zn-0.25%, Ti-0.13%, surplus is Al.
Another aspect of the present invention discloses the preparation side of a kind of rods and bars of aluminium alloy without coarse grain ring
Method, it comprises the steps:
S1, fusing: be heated up to 720～760 DEG C in aluminium ingot is put into stove and melt；
S2, skim: temperature when 735 ± 25 DEG C with in slagging agent is spilled into stove uniformly and fill
Dividing stirring 5-10 minute, wherein, the addition of slagging agent is added by the amount of 0.3KG per ton,
And aluminum liquid surface scum is removed；Melt temperature 730～add when 760 DEG C copper, silicon, manganese, ferrum,
Titanium, magnesium, chromium, above alloy addition sequence is in no particular order；10～15 are stirred after adding alloy
Each uniform ingredients mixing in minute making melt；
S3, refine: use high-purity argon gas injection refining during melt temperature 720-740 DEG C, wherein
Argon content more than 99.7%；Refining time is 40～50 minutes, and injection refining agent consumption is
1.5～2 kgs/tonne of aluminum；After refine is complete, liquid level scum silica frost is removed；After refine, melt stands 20 points
Clock；
S4, casting: melt temperature is that to be cast into ingot casting when 720～760 DEG C standby；Casting cycle
Ingot casting crystal grain is refined by middle addition aluminum titanium boron line, and adding speed is 2m/min～3m/min；Watering
On casting chute, online refine, is passed through high-purity argon gas, argon content more than 99.7% during refine；?
Rear employing 30PPi and 50PPi double-layer ceramic filter plate purifies melt further, finally obtains
To ingot casting；
S5, homogenize: ingot casting step S4 obtained is warmed to 570 ± 10 DEG C, be incubated 8～10
Hour, the rear cooling chamber that enters uses spray cooling, obtains ingot casting after homogenizing；
S6, extruding: use the extrusion die of band circular arc work strip, heat extrusion die, add
Hot temperature 470 DEG C～490 DEG C, ingot casting is heated to 460 DEG C～520 DEG C and enters recipient extruding, squeezes
Pressure cylinder preheating temperature 390 DEG C～440 DEG C；It is directly entered tank at extrusion material, utilizes extruding
Immediate quenching；Gained bar artificial aging will be extruded above process, aging temp 165 DEG C
～185 DEG C, it is incubated 8 hours；Finally give finished product..
Last it is noted that the foregoing is only the preferred embodiments of the present invention, not
For limiting the present invention, although the present invention being described in detail with reference to previous embodiment,
For a person skilled in the art, it still can be to the skill described in foregoing embodiments
Art scheme is modified, or wherein portion of techniques feature is carried out equivalent.All at this
Within bright spirit and principle, any modification, equivalent substitution and improvement etc. made, all should wrap
Within being contained in protection scope of the present invention.
Claims (4)
1. one kind without coarse grain ring rods and bars of aluminium alloy, it is characterised in that include following weight percent
Each component of ratio: Si-0.62～0.7%, Fe-0.3～0.4%, Cu-0.2～0.35%,
Mn-0.1～0.15%, Mg-0.9～0.98%, Cr-0.15～0.25%, Zn-0.25%,
Ti-0.06～0.13%, surplus is Al.
The most according to claim 1 a kind of without coarse grain ring rods and bars of aluminium alloy, its feature exists
In, including each component of following percentage by weight: Si-0.62%, Fe-0.3%, Cu-0.2%,
Mn-0.1%, Mg-0.9%, Cr-0.15%, Zn-0.25%, Ti-0.06%, surplus is Al.
The most according to claim 1 a kind of without coarse grain ring rods and bars of aluminium alloy, its feature exists
In, including each component of following percentage by weight: Si-0.7%, Fe-0.4%, Cu-0.35%,
Mn-0.15%, Mg-0.98%, Cr-0.25%, Zn-0.25%, Ti-0.13%, surplus is Al.
4. the preparation side of the arbitrary described rods and bars of aluminium alloy without coarse grain ring of claims 1 to 3
Method, it is characterised in that comprise the steps:
S1, fusing: be heated up to 720～760 DEG C in aluminium ingot is put into stove and melt；
S2, skim: temperature when 735 ± 25 DEG C with in slagging agent is spilled into stove uniformly and fill
Dividing stirring 5-10 minute, wherein, the addition of slagging agent is added by the amount of 0.3KG per ton,
And aluminum liquid surface scum is removed；Melt temperature 730～add when 760 DEG C copper, silicon, manganese, ferrum,
Titanium, magnesium, chromium, above alloy addition sequence is in no particular order；10～15 are stirred after adding alloy
Each uniform ingredients mixing in minute making melt；
S3, refine: use high-purity argon gas injection refining during melt temperature 720-740 DEG C, wherein
Argon content more than 99.7%；Refining time is 40～50 minutes, and injection refining agent consumption is
1.5～2 kgs/tonne of aluminum；After refine is complete, liquid level scum silica frost is removed；After refine, melt stands 20 points
Clock；
S4, casting: melt temperature is that to be cast into ingot casting when 720～760 DEG C standby；Casting cycle
Ingot casting crystal grain is refined by middle addition aluminum titanium boron line, and adding speed is 2m/min～3m/min；Watering
On casting chute, online refine, is passed through high-purity argon gas, argon content more than 99.7% during refine；?
Rear employing 30PPi and 50PPi double-layer ceramic filter plate purifies melt further, finally obtains
To ingot casting；
S5, homogenize: ingot casting step S4 obtained is warmed to 570 ± 10 DEG C, be incubated 8～10
Hour, the rear cooling chamber that enters uses spray cooling, obtains ingot casting after homogenizing；
S6, extruding: use the extrusion die of band circular arc work strip, heat extrusion die, heating temperature
Spending 470 DEG C～490 DEG C, ingot casting is heated to 460 DEG C～520 DEG C and enters recipient extruding, recipient
Preheating temperature 390 DEG C～440 DEG C；It is directly entered tank at extrusion material, utilizes extruding waste heat
Quenching；Gained bar artificial aging will be extruded above process, aging temp 165 DEG C～185 DEG C,
It is incubated 8 hours；Finally give finished product.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106591646A (en) * | 2017-02-24 | 2017-04-26 | 宁波科诺铝业股份有限公司 | 6061 aluminum alloy |
| CN107686916A (en) * | 2017-09-19 | 2018-02-13 | 山东友升铝业有限公司 | A kind of vehicle energy absorption box processing method |
| CN107937769A (en) * | 2017-12-13 | 2018-04-20 | 无锡海特铝业有限公司 | A kind of aluminium alloy with high intensity seawater corrosion resistance and preparation method thereof |
| CN108004441A (en) * | 2017-11-07 | 2018-05-08 | 江阴东华铝材科技有限公司 | A kind of aluminium alloy of high-strength high-conductivity and preparation method thereof |
| CN108043898A (en) * | 2018-01-23 | 2018-05-18 | 辽宁忠旺集团有限公司 | A kind of manufacturing method and product of Integral aluminum alloy hinge section bar |
| CN108842102A (en) * | 2018-06-27 | 2018-11-20 | 薛士军 | A kind of doorframe high-strength aluminum alloy and its preparation process |
| CN111041251A (en) * | 2019-12-09 | 2020-04-21 | 衢州市岳泰铝业有限公司 | Preparation process of aluminum alloy section with low coloring defect |
| CN112725668A (en) * | 2020-12-28 | 2021-04-30 | 东北轻合金有限责任公司 | 6061 aluminum alloy bar production method capable of eliminating coarse crystal ring |
| CN113201658A (en) * | 2021-04-16 | 2021-08-03 | 池州市九华明坤铝业有限公司 | Processing technology of high-quality aluminum alloy industrial section |
| CN113265569A (en) * | 2021-05-14 | 2021-08-17 | 无锡海特铝业有限公司 | Preparation method of 6-series high-strength fine-grain aluminum alloy bar for forging automobile control arm |
| WO2023103921A1 (en) * | 2021-12-10 | 2023-06-15 | 广东坚美铝型材厂（集团）有限公司 | Method for repairing solid bar extrusion die |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106591646A (en) * | 2017-02-24 | 2017-04-26 | 宁波科诺铝业股份有限公司 | 6061 aluminum alloy |
| CN107686916A (en) * | 2017-09-19 | 2018-02-13 | 山东友升铝业有限公司 | A kind of vehicle energy absorption box processing method |
| CN107686916B (en) * | 2017-09-19 | 2019-10-18 | 山东友升铝业有限公司 | A kind of vehicle energy absorption box processing method |
| CN108004441A (en) * | 2017-11-07 | 2018-05-08 | 江阴东华铝材科技有限公司 | A kind of aluminium alloy of high-strength high-conductivity and preparation method thereof |
| CN107937769A (en) * | 2017-12-13 | 2018-04-20 | 无锡海特铝业有限公司 | A kind of aluminium alloy with high intensity seawater corrosion resistance and preparation method thereof |
| CN108043898A (en) * | 2018-01-23 | 2018-05-18 | 辽宁忠旺集团有限公司 | A kind of manufacturing method and product of Integral aluminum alloy hinge section bar |
| CN108842102A (en) * | 2018-06-27 | 2018-11-20 | 薛士军 | A kind of doorframe high-strength aluminum alloy and its preparation process |
| CN111041251A (en) * | 2019-12-09 | 2020-04-21 | 衢州市岳泰铝业有限公司 | Preparation process of aluminum alloy section with low coloring defect |
| CN112725668A (en) * | 2020-12-28 | 2021-04-30 | 东北轻合金有限责任公司 | 6061 aluminum alloy bar production method capable of eliminating coarse crystal ring |
| CN113201658A (en) * | 2021-04-16 | 2021-08-03 | 池州市九华明坤铝业有限公司 | Processing technology of high-quality aluminum alloy industrial section |
| CN113265569A (en) * | 2021-05-14 | 2021-08-17 | 无锡海特铝业有限公司 | Preparation method of 6-series high-strength fine-grain aluminum alloy bar for forging automobile control arm |
| CN113265569B (en) * | 2021-05-14 | 2022-11-11 | 江苏亚太轻合金科技股份有限公司 | Preparation method of 6-series high-strength fine-grain aluminum alloy bar for forging automobile control arm |
| WO2023103921A1 (en) * | 2021-12-10 | 2023-06-15 | 广东坚美铝型材厂（集团）有限公司 | Method for repairing solid bar extrusion die |
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Application publication date: 20161012 |