CN108941197A - A kind of preparation method of high thermal conductivity alusil alloy plate - Google Patents

A kind of preparation method of high thermal conductivity alusil alloy plate Download PDF

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Publication number
CN108941197A
CN108941197A CN201810732823.1A CN201810732823A CN108941197A CN 108941197 A CN108941197 A CN 108941197A CN 201810732823 A CN201810732823 A CN 201810732823A CN 108941197 A CN108941197 A CN 108941197A
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alloy
thermal conductivity
high thermal
preparation
alloy plate
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CN201810732823.1A
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CN108941197B (en
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郭宇
王晔
许红雨
胡茂良
吉泽生
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Harbin University of Science and Technology
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Harbin University of Science and Technology
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B3/00Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B2001/225Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length by hot-rolling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B3/00Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B21B2003/001Aluminium or its alloys

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Conductive Materials (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)

Abstract

The present invention provides a kind of preparation methods of high thermal conductivity alusil alloy plate, are made by the steps: (1) Al-Si alloy pig is taken, after upper and lower surface milling is flat, and cleaning/cleaning aluminium ingot specimen surface;(2) the Al-Si alloy pig that step (1) processing is completed is put into heat-treatment furnace and carries out Homogenization Treatments;(3) ingot casting after the cooling period is put into the heat treatment of the pre-add before being rolled in heat-treatment furnace;(4) step (3) uniformly heated ingot casting is rolled, total volume under pressure is 75%;(5) after rolling, the Al-Si sheet alloy that rolling obtains is reapposed into the progress T6 heat treatment in heat-treatment furnace.High thermal conductivity alloy of the invention thermal coefficient with higher, preferable mechanical property, excellent machining property, preparation method principle are reliable, the advantages that easy to operate and lower production cost, is highly suitable for the heat sink assembly in each field, has a vast market application prospect.

Description

A kind of preparation method of high thermal conductivity alusil alloy plate
Technical field
The present invention relates to the preparation methods of a kind of high thermal conductivity alusil alloy plate, in particular to a kind of by conventional cast aluminium silicon Alloy is rolled into plate and improves the preparation method of its thermal conductivity, belongs to the preparation method field of material.
Background technique
Currently, mainly using the series of transformations aluminium such as 1XXX and 3XXX to close using the cooling fin of the heat exchanger of aluminium alloy production Golden material, or directly adopt casting Al-Si aluminium alloy and carry out production forming, although the wrought aluminium alloy of 1 system and 3 systems has well Heat dissipation effect, but the mechanical property of Chang Yinwei material is general and be deformed in use or occur to corrode and form through-hole And cause the failure of cooling fin;And the thermal coefficient that mechanical property preferably casts Al-Si aluminium alloy is only the left side 80~100W./m.K The right side, heat dissipation effect be not it is very ideal, will lead to and the component that radiates is needed to influence it due to overheat and work normally even to report It is useless.This shows that there is still a need for be largely provided simultaneously with high thermal conductivity and high mechanics in the industries such as industrial application especially automobile, electromechanics The material of performance guarantees the normal operation of equipment, and the present invention mechanics excellent using casting Al-Si aluminium alloy improve at the same time Under the premise of material mechanical performance, so that material is generated plastic deformation by the method for rolling and closed with raising Al-Si by a relatively large margin The thermal conductivity of gold, proposes a kind of preparation method of high thermal conductivity alusil alloy plate.
Summary of the invention
In view of the above-mentioned problems, the purpose of the present invention is to provide a kind of preparation method of high thermal conductivity alusil alloy plate, institute The alusil alloy plate of acquisition has the high thermal conductivity aluminium alloy plate of excellent mechanical performances, high thermal conductivity and higher productivity The preparation method of material.
Used specific technical solution is as follows in order to achieve the above purpose by the present invention:
A kind of preparation method of high thermal conductivity alusil alloy plate, is made by the steps:
(1) take Al-Si alloy pig to be rolled, by upper and lower surface milling it is flat after, clear up and Al-Si alloy ingot surface of polishing;
(2) the Al-Si alloy pig that step (1) processing is completed is put into heat-treatment furnace and carries out Homogenization Treatments;
(3) the Al-Si alloy pig that step (2) processing is completed is put into pre-add before being rolled in heat-treatment furnace to be heat-treated;
(4) step (3) uniformly heated alloy pig is rolled using double rolling mills;
(5) after rolling, the Al-Si sheet alloy that rolling obtains is reapposed and is carried out at T6 in heat-treatment furnace Reason.
Based on the above-mentioned technical proposal, each step can also specifically use following preferred embodiment or parameter.
Preferably, the Al-Si alloy in the step (1) is casting Al-Si alloy, and alloy state is casting State.
Preferably, Al-Si alloy ingot surface is polished with 180 mesh emery papers in the step (1).
Preferably, the Al-Si alloy pig in the step (1) is casting Al-Si alloy, and alloy state is casting State.
Preferably, the Al-Si alloy ingot surface in the step (1) is by being milled into.
Preferably, the Al-Si alloy pig in the step (1) is with a thickness of 10mm.
Preferably, the soaking temperature of Homogenization Treatments is 500-520 DEG C, soaking time 12-18h in step (2), it is cold But mode is air-cooled.
Preferably, the heating temperature that pre-add is heat-treated in step (3) is 480-500 DEG C, soaking time 1h.
Preferably, the rolling pass in step (4) operation of rolling is 5-6 times, total volume under pressure is 75-85%.
Preferably, solid solubility temperature is 510-530 DEG C, solution time 6-8h, timeliness temperature in the T6 processing of step (5) 160-180 DEG C of degree, then aging time 6-8h is cooled down in air.
Preferably, solid solution is quenched by the way of water quenching after completing, and quenching is used in the T6 processing of step (5) Water temperature is 60-80 DEG C.
Another object of the present invention is to provide it is a kind of by any of the above-described scheme the method be prepared have it is higher The alusil alloy plate of thermal coefficient.
Compared with the prior art, the advantages of the present invention are as follows: with this method prepare high thermal conductivity alusil alloy plate simultaneously Have higher thermal coefficient and good mechanical property, the comprehensive performance after material rolling is more than base material, preparation method Principle is reliable, easy to operate, is very suitable to produce in enormous quantities, has a vast market application prospect.
Specific embodiment
Below according to embodiment and comparative example, the present invention is further explained.
Embodiment 1
In the present embodiment, high thermal conductivity aluminium alloy the preparation method is as follows: prepare having a size of 200mm (length) × 90mm (width) × The ADC12 alloy cast ingot of 10mm (height), the alloy cast ingot are obtained by founding mode, and the upper and lower surface milling of alloy cast ingot is put down After whole, cleaning, cleaning alloy cast ingot surface, then with 180 mesh emery papers polishing ingot casting surface.ADC12 alloy cast ingot is put into Carry out Homogenization Treatments in box heat treatment furnace, Homogenization Treatments temperature is 510 DEG C, and the Homogenization Treatments time is 16h, then from It takes out to be placed in air in heat-treatment furnace and be cooled down.ADC12 alloy cast ingot after cooling is reentered into box heat treatment Pre-add heat treatment is carried out in furnace, the heating temperature of pre-add heat treatment is 500 DEG C, soaking time 1h.After the completion of pre-add heat treatment ADC12 alloy cast ingot is taken out from box heat treatment furnace, is directly rolled.It is rolled using double rolling mills, rolls road Secondary is 5 times, and total volume under pressure is 75%.After rolling, the ADC12 sheet alloy of acquisition is placed again into box heat treatment furnace It carries out T6 processing (solid solution+timeliness), solid solubility temperature is 530 DEG C, solution time 8h, and solid solution is completed later by the way of water quenching It is quenched, quenching water temperature is 70 DEG C, and ageing treatment is carried out after the completion of quenching, and aging temp is 180 DEG C, and aging time is 8h after the completion of timeliness, is placed in air and is cooled down.Final alusil alloy plate product is obtained after cooling.
The alusil alloy plate and original base material obtain to this method carries out Mechanics Performance Testing respectively, and it is anti-to measure its limit Tensile strength is 300MPa, elongation 10%.The ultimate tensile strength of base material ADC12 alloy cast ingot is 220MPa, and elongation is 1.0%.
Further, heating conduction test is carried out to the alusil alloy plate and original base material of this method acquisition respectively, is surveyed The thermal coefficient for obtaining alusil alloy plate is 150 (W/mK), and the thermal coefficient of base material ADC12 alloy cast ingot is 97 (W/m K)。
53.6% is improved compared to base material using the heating conduction that alusil alloy plate is made in the embodiment of the present invention, limits tension Intensity improves 36.36% compared to base material, and elongation improves 9 times compared to base material.
Comparative example 1
This comparative example is rolled using ADC12 alloy cast ingot identical with 1 size of embodiment.To alloy in this comparative example The treatment process of ingot casting is distinguished before being only that rolling compared to the examples, without Homogenization Treatments, directly will be after polishing ADC12 alloy cast ingot rolls after carrying out pre-add heat treatment, and rolling carries out T6 processing after completing.Pre-add heat treatment rolls, at T6 Reason technological parameter is consistent relative to embodiment 1, without modification.The alusil alloy plate obtained to this method carries out respectively Mechanics Performance Testing and heating conduction test, the ultimate tensile strength for measuring alusil alloy plate is 268MPa, elongation is 6.2%, thermal coefficient is 127 (W/mK).
Comparative example 2
This comparative example is rolled using ADC12 alloy cast ingot identical with 1 size of embodiment.To alloy in this comparative example The treatment process of ingot casting is distinguished compared to the examples, is only that rolling is completed no longer to carry out T6 processing later.It is Homogenization Treatments, pre- Heat treatment, the technological parameter rolled are consistent relative to embodiment 1, without modification.The aluminium silicon that this method obtains is closed Golden plate material carries out Mechanics Performance Testing and heating conduction test respectively, and the ultimate tensile strength for measuring alusil alloy plate is 237MPa, elongation 6.6%, thermal coefficient are 129 (W/mK).
Comparative example 3
This comparative example is rolled using ADC12 alloy cast ingot identical with 1 size of embodiment.To alloy in this comparative example The treatment process of ingot casting is distinguished before being only that rolling compared to the examples, without Homogenization Treatments, directly will be after polishing ADC12 alloy cast ingot rolls after carrying out pre-add heat treatment, and rolling also no longer carries out T6 processing after completing.Pre-add heat treatment is rolled The technological parameter of system is consistent relative to embodiment 1, without modification.To this method obtain alusil alloy plate respectively into Row Mechanics Performance Testing and heating conduction test, the ultimate tensile strength for measuring alusil alloy plate is 197MPa, elongation is 3.3%, thermal coefficient is 149 (W/mK).
Comparative example 4
This comparative example, which is directlyed adopt, carries out T6 processing with the identical ADC12 alloy cast ingot of embodiment 1, without centre The technological parameter for the treatment of process, T6 processing is consistent relative to embodiment 1, without modification.The aluminium silicon that this method is obtained Alloy carries out Mechanics Performance Testing and heating conduction test respectively, and the ultimate tensile strength for measuring alusil alloy plate is 247MPa, elongation 1.9%, thermal coefficient are 119 (W/mK).
In comparison, it will be compared using product made from product made from the embodiment of the present invention and comparative example: thermally conductive Coefficient, which compared with comparative example 1 improves 18.11%, ultimate tensile strength and improves 11.94%, elongation, improves 61.29%;It is thermally conductive Coefficient, which compared with comparative example 2 improves 16.28%, ultimate tensile strength and improves 26.58%, elongation, improves 51.5%;It is thermally conductive Coefficient, which compared with comparative example 3 improves 0.67%, ultimate tensile strength and improves 52.28%, elongation, improves 2 times;Thermal coefficient 26.05%, ultimate tensile strength is improved compared with comparative example 4 improve 21.45%, elongation improve 4 times.
Above-mentioned embodiment is only a preferred solution of the present invention, so it is not intended to limiting the invention.Have The those of ordinary skill for closing technical field can also make various changes without departing from the spirit and scope of the present invention Change and modification.Therefore all mode technical solutions obtained for taking equivalent substitution or equivalent transformation, all fall within guarantor of the invention It protects in range.

Claims (10)

1. a kind of preparation method of high thermal conductivity alusil alloy plate, it is characterised in that be made by the steps:
(1) take Al-Si alloy pig to be rolled, by upper and lower surface milling it is flat after, clear up and Al-Si alloy ingot surface of polishing;
(2) the Al-Si alloy pig that step (1) processing is completed is put into heat-treatment furnace and carries out Homogenization Treatments;
(3) the Al-Si alloy pig that step (2) processing is completed is put into pre-add before being rolled in heat-treatment furnace to be heat-treated;
(4) step (3) uniformly heated alloy pig is rolled using double rolling mills;
(5) after rolling, the Al-Si sheet alloy that rolling obtains is reapposed into the progress T6 processing in heat-treatment furnace.
2. a kind of preparation method of high thermal conductivity alusil alloy plate according to claim 1, it is characterised in that: the step (1) the Al-Si alloy in is casting Al-Si alloy, and alloy state is casting state.
3. a kind of preparation method of high thermal conductivity alusil alloy plate according to claim 1, it is characterised in that: the step (1) in, Al-Si alloy ingot surface is polished with 180 mesh emery papers.
4. a kind of preparation method of high thermal conductivity alusil alloy plate according to claim 1, it is characterised in that: the step (1) the Al-Si alloy pig in is casting Al-Si alloy, and alloy state is casting state;Al-Si in the step (1) is closed Ingot surface is by being milled into, and Al-Si alloy pig is with a thickness of 10mm.
5. a kind of preparation method of high thermal conductivity alusil alloy plate according to claim 1, it is characterised in that: step (2) The soaking temperature of middle Homogenization Treatments is 500-520 DEG C, soaking time 12-18h, and the type of cooling is air-cooled.
6. a kind of preparation method of high thermal conductivity alusil alloy plate according to claim 1, it is characterised in that: step (3) The heating temperature of middle pre-add heat treatment is 480-500 DEG C, soaking time 1h.
7. a kind of preparation method of high thermal conductivity alusil alloy plate according to claim 1, it is characterised in that: step (4) Rolling pass in the operation of rolling is 5-6 times, and total volume under pressure is 75-85%.
8. a kind of preparation method of high thermal conductivity alusil alloy plate according to claim 1, it is characterised in that: step (5) When middle T6 processing, solid solubility temperature is 510-530 DEG C, solution time 6-8h, 160-180 DEG C of aging temp, aging time 6-8h.
9. a kind of preparation method of high thermal conductivity alusil alloy plate according to claim 1, it is characterised in that: step (5) T6 processing in, solid solution complete after quenched by the way of water quenching, quenching is 60-80 DEG C with water temperature.
10. a kind of high thermal conductivity alusil alloy plate prepared such as any the method for claim 1~9.
CN201810732823.1A 2018-07-05 2018-07-05 Preparation method of high-thermal-conductivity aluminum-silicon alloy plate Active CN108941197B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112157122A (en) * 2020-11-10 2021-01-01 贵州大学 Cryogenic processing method for improving strength and plasticity of 3003 aluminum alloy plate
CN115198212A (en) * 2022-07-18 2022-10-18 哈尔滨理工大学 High-thermal-conductivity aluminum-silicon alloy and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103725933A (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 diesel engine piston
CN104781434A (en) * 2012-11-19 2015-07-15 株式会社神户制钢所 Aluminum alloy material for high-pressure hydrogen gas containers and method for producing same
CN107492794A (en) * 2017-08-31 2017-12-19 国网河南省电力公司西峡县供电公司 One kind sealing heat-conducting type outdoor power cabinet

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104781434A (en) * 2012-11-19 2015-07-15 株式会社神户制钢所 Aluminum alloy material for high-pressure hydrogen gas containers and method for producing same
CN103725933A (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 diesel engine piston
CN107492794A (en) * 2017-08-31 2017-12-19 国网河南省电力公司西峡县供电公司 One kind sealing heat-conducting type outdoor power cabinet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112157122A (en) * 2020-11-10 2021-01-01 贵州大学 Cryogenic processing method for improving strength and plasticity of 3003 aluminum alloy plate
CN115198212A (en) * 2022-07-18 2022-10-18 哈尔滨理工大学 High-thermal-conductivity aluminum-silicon alloy and preparation method thereof

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