CN111420991A - Method for rolling magnesium-aluminum laminated plate at different temperatures - Google Patents
Method for rolling magnesium-aluminum laminated plate at different temperatures Download PDFInfo
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- CN111420991A CN111420991A CN202010381495.2A CN202010381495A CN111420991A CN 111420991 A CN111420991 A CN 111420991A CN 202010381495 A CN202010381495 A CN 202010381495A CN 111420991 A CN111420991 A CN 111420991A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-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
- B21B1/38—Metal-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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-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
- B21B1/38—Metal-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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
- B21B2001/386—Plates
Abstract
A method for rolling a magnesium-aluminum laminated plate at different temperatures belongs to the technical field of metal composite plate preparation, and is characterized by comprising the following implementation steps: 1. putting the magnesium and aluminum plates with the same shape and size into a heating furnace for annealing, and treating the surfaces of the magnesium and aluminum plates; 2. after the magnesium-aluminum plates are overlapped together, 4 small holes are drilled at the set point of the front section of each magnesium-aluminum plate, and then the magnesium-aluminum plates are separated; 3. taking 4 aluminum rivets and fastening the rivets in 4 small holes of the aluminum plate; 4. respectively putting the aluminum plate and the magnesium plate with the rivets into two heating furnaces for heating, introducing inert gas, heating the aluminum plate to 300-400 ℃, preserving heat for 0.5h, heating the magnesium plate to 400-450 ℃, and preserving heat for 0.5 h; 5. taking out the heated plate, buckling the heated plate together, putting the aluminum plate on the aluminum plate and the magnesium plate on the magnesium plate, assembling the aluminum plate and the magnesium plate, and then feeding the aluminum plate and the magnesium plate into a rolling mill for rolling. The advantages are that: different heating treatments are respectively carried out on the component plates, so that the deformation capability of the magnesium-aluminum alloy can be effectively cooperated, and the quality of rolled products is improved.
Description
Technical Field
The invention belongs to the technical field of metal composite plate preparation, and particularly relates to a method for manufacturing a magnesium-aluminum laminated plate by different-temperature rolling.
Background
The magnesium-aluminum laminated plate is a metal composite material with excellent mechanical property, has the advantages of magnesium-aluminum alloy, can meet the product performance requirement and greatly reduce the structural weight, thereby having wide application prospect. The traditional preparation method of the magnesium-aluminum laminated plate comprises an explosion method, a diffusion welding method, a rolling method and the like, wherein the explosion cladding method is to realize the combination of a cladding interface by utilizing the high temperature and the impact force generated at the moment of explosive explosion, but the problems of difficult plate shape control, uneven combination interface and the like are caused due to the limitation of processing conditions; the diffusion welding method adopts brazing filler metal with low melting point to realize interface combination, the brazing filler metal melts at high temperature to form instant liquid phase diffusion connection, but the interface combination strength is low due to insufficient diffusion degree of heterogeneous metal; the rolling and cladding method usually adopts multi-pass accumulative hot rolling, but because magnesium alloy is usually in a close-packed hexagonal structure, the critical shear stress of a non-basal plane slip system at room temperature is far larger than that of a basal plane slip system, so that the magnesium-aluminum alloy deforms unevenly in the hot rolling, composite interface cracks are formed and expanded, and the service performance of the laminated plate is influenced.
Disclosure of Invention
The invention aims to provide a method for rolling magnesium-aluminum laminated plates at different temperatures, which can effectively cooperate with the deformability of magnesium-aluminum alloy and improve the quality of rolled products.
The invention is realized in such a way, and is characterized by comprising the following implementation steps:
Firstly, as shown in figure 1, taking a set aluminum plate 1 and a set magnesium plate 2 which have the same shape and size, putting the aluminum plate and the magnesium plate into a heating furnace for annealing treatment, and then carrying out surface cleaning treatment on the aluminum plate and the magnesium plate;
Secondly, after the magnesium-aluminum plates are stacked together, four small holes 3 are drilled at the set point of the front section of the magnesium-aluminum plate, and then the magnesium-aluminum plates are separated;
Taking four set aluminum rivets 4, and respectively fastening the four aluminum rivets 4 in four small holes on the aluminum plate 1, wherein the lengths of the four aluminum rivets are slightly larger than the sum of the thicknesses of the magnesium plate and the aluminum plate;
Fourthly, respectively putting the aluminum plate 1 and the magnesium plate 2 provided with the four aluminum rivets into two heating furnaces for heating, introducing inert gas, heating the aluminum plate 1 to 300-400 ℃, preserving heat for 0.5h, heating the magnesium plate 2 to 400-450 ℃, and preserving heat for 0.5 h;
And fifthly, taking out the heated aluminum plate 1 and the heated magnesium plate 2, immediately buckling the aluminum plate 1 and the heated magnesium plate 2 together by taking four rivets 4 as guide posts, taking the aluminum plate 1 as an upper template and the magnesium plate 2 as a lower template, carrying out die assembly and assembly, then sending the lower template into a rolling mill for rolling, and obtaining the magnesium-aluminum laminated plate after rolling.
The invention has the advantages and positive effects that: the magnesium plate and the aluminum plate are respectively subjected to different heating treatments before rolling, so that the plastic deformation capacity of the heterogeneous metal is regulated and controlled.
Drawings
FIG. 1 is a laminated view of magnesium and aluminum plates.
FIG. 2 is a schematic view of an aluminum plate with rivets.
FIG. 3 is a schematic view of an assembly of magnesium and aluminum plates.
In the figure: 1-aluminum plate, 2-magnesium plate, 3-small hole, 4-aluminum rivet, 5-upper template, and 6-lower template.
Detailed Description
As shown in figure 1, a 1060 pure aluminum plate with the thickness of 100 × 80 multiplied by 5mm and an AZ31 magnesium alloy plate with the thickness of 100 × 80 multiplied by 5mm are selected as component plates, and the concrete implementation steps are as follows:
1. Respectively annealing the magnesium plate 2 and the aluminum plate 1:
The annealing temperature of the magnesium plate 2 is 300 ℃, the heat preservation time is 0.5h, the annealing temperature of the aluminum plate 1 is 350 ℃, and the heat preservation time is 1 h;
2. Polishing the superposed surface of the annealed magnesium plate 2 and the annealed aluminum plate 1 by using a polisher, removing oil stains by using absolute ethyl alcohol, and removing metal scraps by using an ultrasonic cleaner;
3. The magnesium and aluminum plates after surface treatment are overlapped together, four through holes 3 are punched on the front section surface of the magnesium and aluminum plates, and then the magnesium and aluminum plates are separated;
4. As shown in fig. 2, four aluminum rivets 4 are fastened in the small holes of the aluminum plate 1 respectively;
5. Respectively putting the aluminum plate 1 and the magnesium plate 2 provided with the rivets into two heating furnaces for heating, introducing inert gas, heating the aluminum plate 1 to 350 ℃, preserving heat for 0.5h, heating the magnesium plate 2 to 420 ℃, and preserving heat for 0.5 h;
6. As shown in fig. 3, after the heated aluminum plate 1 and the magnesium lower plate 2 are taken out, the aluminum plate 1 and the magnesium lower plate 2 are immediately fastened together by using four rivets as guide posts, the aluminum plate 1 is an upper template 5 on the upper side, and the magnesium plate 2 is a lower template 6 on the lower side, so that a "mold closing assembly" is formed and sent to a rolling mill for rolling.
Claims (1)
1. A method for manufacturing a magnesium-aluminum laminated plate by different temperature rolling is characterized by comprising the following implementation steps:
Firstly, taking a set aluminum plate (1) and a set magnesium plate (2) which are the same in shape and size, putting the aluminum plate and the magnesium plate into a heating furnace for annealing treatment, and then performing surface decontamination treatment on the aluminum plate and the magnesium plate;
Secondly, after the magnesium plate and the aluminum plate are overlapped together, four small holes (3) are drilled on the front section surface of the magnesium plate and the aluminum plate in a set point mode, and then the magnesium plate and the aluminum plate are separated;
Taking four set aluminum rivets, and respectively fastening the four set aluminum rivets in the four small holes (3) on the aluminum plate (1), wherein the lengths of the four aluminum rivets (4) are respectively slightly larger than the sum of the thicknesses of the magnesium plate and the aluminum plate;
Fourthly, respectively putting the aluminum plate (1) and the magnesium plate (2) provided with the four aluminum rivets (4) into two heating furnaces for heating, introducing inert gas, heating the aluminum plate (1) to 300-400 ℃, preserving heat for 0.5h, heating the magnesium plate (2) to 400-450 ℃, and preserving heat for 0.5 h;
And fifthly, taking out the heated aluminum plate (1) and the heated magnesium plate (2), immediately buckling the aluminum plate (1) and the magnesium plate together by taking four rivets as guide posts, taking the aluminum plate (1) as an upper template (5) and the magnesium plate (2) as a lower template (6), performing mold closing assembly, then feeding the aluminum plate and the magnesium plate into a rolling mill for rolling, and obtaining the magnesium-aluminum laminated plate after rolling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010381495.2A CN111420991A (en) | 2020-05-08 | 2020-05-08 | Method for rolling magnesium-aluminum laminated plate at different temperatures |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010381495.2A CN111420991A (en) | 2020-05-08 | 2020-05-08 | Method for rolling magnesium-aluminum laminated plate at different temperatures |
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| CN111420991A true CN111420991A (en) | 2020-07-17 |
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| CN202010381495.2A Pending CN111420991A (en) | 2020-05-08 | 2020-05-08 | Method for rolling magnesium-aluminum laminated plate at different temperatures |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113290048A (en) * | 2021-04-06 | 2021-08-24 | 长沙新材料产业研究院有限公司 | Aluminum/magnesium/aluminum alloy composite material and preparation process thereof |
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| CN101530860A (en) * | 2009-04-13 | 2009-09-16 | 西安建筑科技大学 | Method for preparing aluminum-magnesium ultrafine crystal composite plate with multilayer structure |
| JP4799294B2 (en) * | 2006-06-30 | 2011-10-26 | 古河スカイ株式会社 | Method for producing high formability Al-Mg alloy plate |
| CN106862271A (en) * | 2017-03-17 | 2017-06-20 | 燕山大学 | A kind of method that different temperature rolling prepares titanium aluminum composite plate |
| CN108114980A (en) * | 2017-12-21 | 2018-06-05 | 燕山大学 | The method for preparing titanium-magnesium composition plate using the straight rolling of the different temperature of electromagnetic induction heating |
| CN109433822A (en) * | 2018-10-26 | 2019-03-08 | 同济大学 | A kind of Rolling compund method of magnalium clad plate |
| CN109894471A (en) * | 2019-03-13 | 2019-06-18 | 太原科技大学 | A kind of high bond strength Mg-Al composite sheet band differential temperature asymmetrical rolling complex method |
-
2020
- 2020-05-08 CN CN202010381495.2A patent/CN111420991A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4799294B2 (en) * | 2006-06-30 | 2011-10-26 | 古河スカイ株式会社 | Method for producing high formability Al-Mg alloy plate |
| CN101530860A (en) * | 2009-04-13 | 2009-09-16 | 西安建筑科技大学 | Method for preparing aluminum-magnesium ultrafine crystal composite plate with multilayer structure |
| CN106862271A (en) * | 2017-03-17 | 2017-06-20 | 燕山大学 | A kind of method that different temperature rolling prepares titanium aluminum composite plate |
| CN108114980A (en) * | 2017-12-21 | 2018-06-05 | 燕山大学 | The method for preparing titanium-magnesium composition plate using the straight rolling of the different temperature of electromagnetic induction heating |
| CN109433822A (en) * | 2018-10-26 | 2019-03-08 | 同济大学 | A kind of Rolling compund method of magnalium clad plate |
| CN109894471A (en) * | 2019-03-13 | 2019-06-18 | 太原科技大学 | A kind of high bond strength Mg-Al composite sheet band differential temperature asymmetrical rolling complex method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113290048A (en) * | 2021-04-06 | 2021-08-24 | 长沙新材料产业研究院有限公司 | Aluminum/magnesium/aluminum alloy composite material and preparation process thereof |
| CN113290048B (en) * | 2021-04-06 | 2023-02-17 | 航天科工(长沙)新材料研究院有限公司 | Aluminum/magnesium/aluminum alloy composite material and preparation process thereof |
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Application publication date: 20200717 |