CN104404313A - Aluminum alloy slice easy to weld for air conditioner radiator and preparation method of aluminum alloy slice - Google Patents

Aluminum alloy slice easy to weld for air conditioner radiator and preparation method of aluminum alloy slice Download PDF

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Publication number
CN104404313A
CN104404313A CN201410684260.5A CN201410684260A CN104404313A CN 104404313 A CN104404313 A CN 104404313A CN 201410684260 A CN201410684260 A CN 201410684260A CN 104404313 A CN104404313 A CN 104404313A
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CN
China
Prior art keywords
aluminum alloy
temperature
air conditioner
alloy slice
refining
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Application number
CN201410684260.5A
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Chinese (zh)
Inventor
骆宣佐
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安徽天祥空调科技有限公司
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Priority to CN201410684260.5A priority Critical patent/CN104404313A/en
Publication of CN104404313A publication Critical patent/CN104404313A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/06Making alloys with the use of special agents for refining or deoxidising
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/02Alloys based on aluminium with silicon as the next major constituent
    • 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
    • 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
    • C22F1/043Changing 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 silicon as the next major constituent

Abstract

The invention discloses an aluminum alloy slice easy to weld for an air conditioner radiator. The aluminum alloy slice comprises the following chemical element components in percentage by weight: 0.75-1.18 of Si(silicon), 0.905-1.005 of Mg (magnesium), 1.10-1.86 of Fe (ferrum), 0.03-0.08 of Be (beryllium), 1.35-0.59 of V (vanadium), 1.16-1.78 of Mn (manganese), and the balance of Al (aluminium). For the aluminum alloy slice disclosed by the invention, the crystal is uniform and meticulous, the aluminum alloy slice has favourable thermal conductivity, self-corrosion resistance and core fissure resistance, the millability is good, and besides the aluminum alloy slice has an excellent welding property; through the adoption of the production method disclosed by the invention, the probabilities of layering, peeling, bubbling and cracks are reduced, and the rate of finished products is increased; according to the invention, the refining effect of a refining agent is good, and the probabilities of air holes and slag inclusion are obviously reduced.

Description

A kind of easily welding air conditioner heat radiator aluminum alloy sheet and preparation method thereof
Technical field
The present invention relates to aluminium alloy heat sink material field, particularly relate to a kind of easily welding air conditioner heat radiator aluminum alloy sheet and preparation method thereof.
Background technology
Air conditioner heat radiator is the key part of air-conditioning, is related to working efficiency and the work-ing life of air-conditioning.And along with domestic air conditioning miniaturization and the requirement reducing manufacturing cost, the thickness of air-conditioner foil fin is more and more thinner, towards future development that is thinning, that become hard, high-precision, requires new alloy, new processing technology and new quality height.The requirement on machining accuracy of air-conditioner foil fin is high, requires that aluminium foil has good plasticity and higher intensity.Mainly there is bad mechanical property in current air conditioner heat radiator aluminium foil, as tensile strength (140Rm/MPa), yield strength (100R 0.2/ MPa), hardness (9-12 degree) is more weak, poor electric conductivity, poor thermal conductivity, the shortcomings such as poor plasticity.
Often there are the quality problems of stratification, peeling, bubble, crackle in aluminum alloy heat sink, depends on the complete processings such as founding, extrusion temperature, extrusion speed, therefore needs the production technique improving radiator element, improve the performance of radiator element.
Summary of the invention
The object of the present invention is to provide a kind of easily welding air conditioner heat radiator aluminum alloy sheet and preparation method thereof, this aluminum alloy sheet uniform and delicate, has good thermal conductivity, anti-millability is good from corrodibility, anti-core crack, has excellent welding property simultaneously.
Technical scheme of the present invention is as follows:
A kind of easily welding air conditioner heat radiator aluminum alloy sheet, is characterized in that: the chemical element composition that it contains and mass percent thereof are: Si0.75-1.18, Mg0.905-1.005, Fe1.10-1.86, Be 0.03-0.08, V1.35-0.59, Mn1.16-1.78, remaining as Al.
The production method of described easy welding air conditioner heat radiator aluminum alloy sheet, is characterized in that:
(1) prepare burden, melting, temperature is 740-755 DEG C, smelting time 3.5-4 hour;
(2) refining, temperature is 740-755 DEG C, and refining agent consumption is 1.5% of aluminum alloy melt weight, and refining time is 26-30 minute, leaves standstill 15-20 minute;
(3) cast, adopt 50 height of eye temperature ceramic filter plate aluminum filtration liquid, then cast, temperature of aluminum liquid is 700-710 DEG C, and the water cooling with 20-25 DEG C after casting is consistent with water temperature, sends in homogenizing stove, processes 6-7 hour at 575-585 DEG C;
(4) extrusion molding, extrusion speed is 4.0-5.6m/min, and casting rod temperature is 490-515 DEG C, and die temperature is 490-515 DEG C, and container temperature is 440-460 DEG C;
(5) the laggard sector-style cold quenching of extrusion molding, speed of cooling controls at 4-6 DEG C/S;
(6) tension leveling, extensibility remains on 0.8-1.4%;
(7) ageing treatment, aging temp is 160-168 DEG C, and the time is 8-9 hour, to obtain final product.
The production method of described easy welding air conditioner heat radiator aluminum alloy sheet, is characterized in that: described refining agent is made up of the raw material of following weight part: potassium fluoborate 1-1.3, potassium fluoroaluminate 20-25, KCl22-27, SiCl4 1.5-3, CaF2 2-3, Na3AlF6 3.5-5.5, gac 1-2, CCl4 0.5-1.3, CaO0.3-0.6, MgO0.6-0.8, nanometer aluminium powder 0.3-0.6, rare earth 0.2-0.3, ethanol 15-20; Preparation method is: CaO, MgO, rare earth, gac are pulverized, cross 100 mesh sieves, mix with potassium fluoborate, potassium fluoroaluminate, KCl, CaF2, Na3AlF6, ethanol, grinding 20-30 minute, dry at 150-170 DEG C to over dry, spraying dry, then mix with other remaining components, grinding distribution is even, to obtain final product.
Beneficial effect of the present invention
Aluminum alloy sheet crystallization uniform and delicate of the present invention, has good thermal conductivity, anti-millability is good from corrodibility, anti-core crack, has excellent welding property simultaneously; Production method of the present invention decreases the phenomenon of aluminium alloy stratification, peeling, bubble, crackle, improves yield rate; Refining agent refining effect of the present invention is good, significantly reduces pore and slag inclusion phenomenon.
Embodiment
A kind of easily welding air conditioner heat radiator aluminum alloy sheet, the chemical element composition that it contains and mass percent thereof are: Si0.75-1.18, Mg0.905-1.005, Fe1.10-1.86, Be 0.03-0.08, V1.35-0.59, Mn1.16-1.78, remaining as Al.
The production method of described easy welding air conditioner heat radiator aluminum alloy sheet:
(1) prepare burden, melting, temperature is 750 DEG C, smelting time 3.9 hours;
(2) refining, temperature is 750 DEG C, and refining agent consumption is 1.5% of aluminum alloy melt weight, and refining time is 28 minutes, leaves standstill 18 minutes;
(3) cast, adopt 50 height of eye temperature ceramic filter plate aluminum filtration liquid, then cast, temperature of aluminum liquid is 705 DEG C, consistent with water temperature with the water cooling of 23 DEG C after casting, sends in homogenizing stove, at 580 DEG C, processes 6.5 hours;
(4) extrusion molding, extrusion speed is 5m/min, and casting rod temperature is 510 DEG C, and die temperature is 510 DEG C, and container temperature is 450 DEG C;
(5) the laggard sector-style cold quenching of extrusion molding, speed of cooling controls at 5 DEG C/S;
(6) tension leveling, extensibility remains on 1.1%;
(7) ageing treatment, aging temp is 164 DEG C, and the time is 8.5 hours, to obtain final product.
Described refining agent is made up of the raw material of following weight part (kilogram): potassium fluoborate 1.1, potassium fluoroaluminate 23, KCl23, SiCl4 2.3, CaF2 2.5, Na3AlF6 4.5, gac 1.5, CCl4 2, CaO0.5, MgO0.7, nanometer aluminium powder 0.4, rare earth 0.2, ethanol 18; Preparation method is: CaO, MgO, rare earth, gac are pulverized, cross 100 mesh sieves, mix with potassium fluoborate, potassium fluoroaluminate, KCl, CaF2, Na3AlF6, ethanol, grind 25 minutes, dry at 160 DEG C to over dry, spraying dry, then mix with other remaining components, grinding distribution is even, to obtain final product.
Experimental data
According to YS/T95.1 standard, the tensile strength of 1122 state aluminium foils is 127MPa, elongation 19.5%, Erichsen number 6.2mm.

Claims (3)

1. an easy welding air conditioner heat radiator aluminum alloy sheet, is characterized in that: the chemical element composition that it contains and mass percent thereof are: Si0.75-1.18, Mg0.905-1.005, Fe1.10-1.86, Be 0.03-0.08, V1.35-0.59, Mn1.16-1.78, remaining as Al.
2. the production method of easy welding air conditioner heat radiator aluminum alloy sheet according to claim 1, is characterized in that:
(1) prepare burden, melting, temperature is 740-755 DEG C, smelting time 3.5-4 hour;
(2) refining, temperature is 740-755 DEG C, and refining agent consumption is 1.5% of aluminum alloy melt weight, and refining time is 26-30 minute, leaves standstill 15-20 minute;
(3) cast, adopt 50 height of eye temperature ceramic filter plate aluminum filtration liquid, then cast, temperature of aluminum liquid is 700-710 DEG C, and the water cooling with 20-25 DEG C after casting is consistent with water temperature, sends in homogenizing stove, processes 6-7 hour at 575-585 DEG C;
(4) extrusion molding, extrusion speed is 4.0-5.6m/min, and casting rod temperature is 490-515 DEG C, and die temperature is 490-515 DEG C, and container temperature is 440-460 DEG C;
(5) the laggard sector-style cold quenching of extrusion molding, speed of cooling controls at 4-6 DEG C/S;
(6) tension leveling, extensibility remains on 0.8-1.4%;
(7) ageing treatment, aging temp is 160-168 DEG C, and the time is 8-9 hour, to obtain final product.
3. the production method of easy welding air conditioner heat radiator aluminum alloy sheet according to claim 2, is characterized in that: described refining agent is made up of the raw material of following weight part: potassium fluoborate 1-1.3, potassium fluoroaluminate 20-25, KCl22-27, SiCl4 1.5-3, CaF2 2-3, Na3AlF6 3.5-5.5, gac 1-2, CCl4 0.5-1.3, CaO0.3-0.6, MgO0.6-0.8, nanometer aluminium powder 0.3-0.6, rare earth 0.2-0.3, ethanol 15-20; Preparation method is: CaO, MgO, rare earth, gac are pulverized, cross 100 mesh sieves, mix with potassium fluoborate, potassium fluoroaluminate, KCl, CaF2, Na3AlF6, ethanol, grinding 20-30 minute, dry at 150-170 DEG C to over dry, spraying dry, then mix with other remaining components, grinding distribution is even, to obtain final product.
CN201410684260.5A 2014-11-25 2014-11-25 Aluminum alloy slice easy to weld for air conditioner radiator and preparation method of aluminum alloy slice CN104404313A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106086554A (en) * 2016-06-17 2016-11-09 安徽天祥空调科技有限公司 Air conditioner heat radiator aluminum alloy sheet that a kind of high intensity is anti-fracture and moulding process thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103710591A (en) * 2013-12-17 2014-04-09 芜湖万润机械有限责任公司 Preparation method for aluminum alloy profile with excellent welding performance
CN103725939A (en) * 2013-12-17 2014-04-16 芜湖万润机械有限责任公司 Preparation method of aluminium alloy section for hot roller of duplicator
CN103906852A (en) * 2012-01-27 2014-07-02 株式会社Uacj Aluminum alloy for heat exchanger fin and manufacturing method therefor, as well as heat exchanger using said aluminum alloy

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103906852A (en) * 2012-01-27 2014-07-02 株式会社Uacj Aluminum alloy for heat exchanger fin and manufacturing method therefor, as well as heat exchanger using said aluminum alloy
CN103710591A (en) * 2013-12-17 2014-04-09 芜湖万润机械有限责任公司 Preparation method for aluminum alloy profile with excellent welding performance
CN103725939A (en) * 2013-12-17 2014-04-16 芜湖万润机械有限责任公司 Preparation method of aluminium alloy section for hot roller of duplicator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106086554A (en) * 2016-06-17 2016-11-09 安徽天祥空调科技有限公司 Air conditioner heat radiator aluminum alloy sheet that a kind of high intensity is anti-fracture and moulding process thereof

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Application publication date: 20150311

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