CN106011564A - Coarse ring-free aluminum alloy bar and preparation method thereof - Google Patents

Coarse ring-free aluminum alloy bar and preparation method thereof Download PDF

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Publication number
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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China
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deg
aluminum alloy
percent
cr
alloy bar
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CN201610592367.6A
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Chinese (zh)
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史俊强
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无锡海特铝业有限公司
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Priority to CN201610592367.6A priority Critical patent/CN106011564A/en
Publication of CN106011564A publication Critical patent/CN106011564A/en

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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/02Making alloys by melting
    • C22C1/026Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/06Alloys based on aluminium with magnesium as the next major constituent
    • C22C21/08Alloys based on aluminium with magnesium as the next major constituent with silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/047Changing 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

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

A kind of without coarse grain ring rods and bars of aluminium alloy and preparation method thereof

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.
CN201610592367.6A 2016-07-25 2016-07-25 Coarse ring-free aluminum alloy bar and preparation method thereof CN106011564A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
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

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Cited By (7)

* Cited by examiner, † Cited by third party
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

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