CN105644106A - Three-layer metal composite material and production method thereof - Google Patents
Three-layer metal composite material and production method thereof Download PDFInfo
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- CN105644106A CN105644106A CN201610087854.7A CN201610087854A CN105644106A CN 105644106 A CN105644106 A CN 105644106A CN 201610087854 A CN201610087854 A CN 201610087854A CN 105644106 A CN105644106 A CN 105644106A
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- aluminium lamination
- steel
- solder
- layer
- composite
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/012—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of aluminium or an aluminium alloy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2509/00—Household appliances
- B32B2509/10—Refrigerators or refrigerating equipment
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- Laminated Bodies (AREA)
Abstract
The invention discloses a three-layer metal composite material and a production method thereof. The three-layer metal composite material comprises a solder aluminum layer, an intermediate aluminum layer and a steel layer, wherein the intermediate aluminum layer is located between the solder aluminum layer and the steel layer, the Si content of the intermediate aluminum layer is 0.4-0.6wt%, and the thickness is 45-65 mu m. According to the three-layer metal composite material and the production method thereof, the thickness of the intermediate aluminum layer and the Si content of the initial intermediate aluminum layer are reduced, and the production cost is effectively saved on the premise that the performance is not affected.
Description
Technical field
The present invention relates to metallic composite technical field, particularly relate to a kind of three-layer metal composite and manufacture method thereof.
Background technology
In the air cooling unit in large-scale air cooling power station, the preparation of big flat tube base tube mainly uses aluminum/steel composite material. Aluminum/steel composite material is connected by soldering with the fin being used for dispelling the heat, and the mode that soldering connects has two kinds: first kind of way is to be welded mutually with the aluminum alloy fin being compounded with solder by traditional aluminum/steel double layer composite board; The second way is to be compounded in by solder outside traditional aluminum/steel composite board, forms the three layers aluminum/steel composite material of pre-coated solder, then soldering after combining with non-composite aluminum alloy fin (namely not having the aluminum alloy fin of composite soldering). The shortcoming of first kind of way is in that the cost of raw material is high, Al-alloy fin involves great expense, the processing cost of aluminium alloy non-composite fin is at about 4000 yuan/ton in the market, and it is compounded with the processing cost of the aluminum alloy fin of solder more than 10000 yuan/ton, therefore use the aluminum alloy materials being compounded with solder relatively costly; Comparatively speaking, in the second way, what use non-composite aluminum alloy fin can save cost, the totle drilling cost of non-composite aluminum alloy fin and aluminum/aluminum/steel three layers composite base sealing of tube reduces about 20-30% than the first brazing mode, thus three layers complex method relatively Double-layer aluminum/steel complex method has obvious cost advantage.
But, in existing solder aluminium lamination/centre aluminium lamination/steel three-layer composite material (such as CN103600524A), the silicone content of middle aluminium lamination is 0.8%, solder aluminium alloy 4343 is that (Si represents elemental silicon containing high Si, its content is 6.8wt%-8.2wt%, wt% represents percentage by weight) aluminium alloy, in brazing process, the Si element in solder aluminium alloy spreads to middle aluminum, cause that in aluminum/steel interface aluminum, the content of Si is more than 0.8wt%, and then reached liquidus curve 1wt%, interfacial brittle is made to be easier to mutually generate, this can reduce the bond strength at aluminum/steel interface, possibly even cause material failure, so three layers aluminum/aluminum/steel composite material requires that middle aluminum layer thickness must be over 75 ��m at present.
Therefore, the solder aluminium lamination of prior art/centre aluminium lamination/steel three-layer composite material has following defects that the initial Si content of middle aluminium lamination is higher, and the high aluminum interlayer alloy of Si content is not only relatively costly, and therefore it is required that middle aluminium lamination has higher thickness, this further adds raw-material cost.
Summary of the invention
The purpose of the present invention is to propose to a kind of three-layer metal composite and manufacture method thereof, the Si content having solved the middle aluminium lamination of prior art initial is higher, and the high aluminum interlayer alloy of Si content is not only relatively costly, and therefore it is required that middle aluminium lamination has higher thickness, further add the technical problem of the cost of raw material.
For achieving the above object, the present invention proposes a kind of three-layer metal composite, comprising:
Solder aluminium lamination;
Middle aluminium lamination;
Steel layer;
Described middle aluminium lamination is between described solder aluminium lamination and described steel layer, and the Si content of described middle aluminium lamination is 0.4-0.6wt%, and thickness is 45-65 ��m.
Three-layer metal composite as above, further, the material of wherein said solder aluminium lamination is 4343 aluminium alloys.
Three-layer metal composite as above, further, the material of wherein said steel layer is 08Al steel.
The invention allows for the manufacture method of a kind of three-layer metal composite, it comprises the steps:
Step 101, prepares solder aluminium lamination/aluminium lamination two-layer composite;
Step 102, is combined with each other described solder aluminium lamination/aluminium lamination two-layer composite and steel, and carries out recrystallization annealing temperature process, obtain the three-layer metal composite of solder aluminium lamination/centre aluminium lamination/steel, and the thickness of described middle aluminium lamination is 45-65 ��m;
Step 103, carries out soldering process by the three-layer metal composite of described solder aluminium lamination/centre aluminium lamination/steel;
The manufacture method of three-layer metal composite as above, further, the material of wherein said solder aluminium lamination is 4343 aluminium alloys.
The manufacture method of three-layer metal composite as above, further, the described steel in wherein said step 102 is 08Al steel.
The manufacture method of three-layer metal composite as above, further, the initial Si content of the described aluminium lamination in step 101 belonging to wherein is 0.4-0.6wt%.
The manufacture method of three-layer metal composite as above, further, the condition that soldering processes is: temperature 610 �� 5 DEG C, temperature retention time 4-6min.
The invention has the beneficial effects as follows:
The present invention proposes the metallic composite of a kind of solder aluminium lamination/centre aluminium lamination/steel three layers, it is compared with the metallic composite of the solder of prior art aluminium lamination/centre aluminium lamination/steel three layers, the thickness of the middle aluminium lamination of the metallic composite of solder aluminium lamination/centre aluminium lamination/steel three layers that the present invention proposes is 45-65 ��m, and the thickness of the middle aluminium lamination of the metallic composite of the solder aluminium lamination of prior art/centre aluminium lamination/steel three layers is at least 70 ��m, the metallic composite of solder aluminium lamination therefore proposed by the invention/centre aluminium lamination/steel three layers is compared with prior art, substantially save material, reduce cost. it is said that in general, the thickness reduced accounts for the 3-5% of gross thickness, in the case of mass production, the cost of saving is considerable.
Additionally, in manufacturing the process of metallic composite of solder aluminium lamination/centre aluminium lamination/steel three layers proposed by the invention, reduce the Si content (about 0.3%-0.4%) of initial middle aluminium lamination (transition zone), the cost reducing the metallic composite manufacturing solder aluminium lamination proposed by the invention/centre aluminium lamination/steel three layers equally.
The invention allows for the manufacture method of the metallic composite of this solder aluminium lamination/centre aluminium lamination/steel three layers, it can produce the metallic composite of solder as above aluminium lamination/centre aluminium lamination/steel three layers, and the method has easy and simple to handle, it is not necessary to the advantage of the extra external equipment adding prior art.
Accompanying drawing explanation
By the detailed description made in conjunction with the following drawings, above-mentioned and/or other aspects of the present invention and advantage will be apparent from and be easier to understand, and these accompanying drawings simply schematically, are not limiting as the present invention, wherein:
Fig. 1 is the schematic diagram of the three-layer metal composite of an embodiment of the present invention;
Fig. 2 is the schematic flow sheet manufacturing three-layer metal composite of an embodiment of the present invention.
Detailed description of the invention
Hereinafter, a kind of three-layer metal composite of the present invention and the embodiment of manufacture method thereof are described with reference to the accompanying drawings.
Embodiment in this record is the specific detailed description of the invention of the present invention, for the design of the present invention is described, is all explanatory and exemplary, should not be construed as the restriction to embodiment of the present invention and the scope of the invention. Except except the embodiment of this record, those skilled in the art can also adopt other technical scheme apparent based on the application claims and description disclosure of that, and these technical schemes include adopting the technical scheme making any apparent substitutions and modifications to the embodiment in this record.
The accompanying drawing of this specification is schematic diagram, aids in illustrating the design of the present invention, it is schematically indicated the shape of each several part and mutual relation thereof. Note that the structure of each parts for the ease of clearly showing the embodiment of the present invention, accompanying drawing is not drawn according to identical ratio.
Solder aluminium lamination/centre aluminium lamination/steel three-layer composite material that the present invention propose has been described initially below, then describe the method manufacturing solder aluminium lamination/centre aluminium lamination/steel three-layer composite material that the present invention proposes in detail, be finally the specific embodiment manufacturing solder aluminium lamination/centre aluminium lamination/steel three-layer composite material that the present invention proposes.
Fig. 1 illustrates the schematic diagram of the solder aluminium lamination/centre aluminium lamination/steel three-layer composite material of an embodiment of the present invention. As it is shown in figure 1, the metallic composite of the solder aluminium lamination/centre aluminium lamination/steel three layers of present invention proposition includes:
Solder aluminium lamination;
Middle aluminium lamination;
Steel layer;
Described solder aluminium lamination is 4343 aluminium alloys, and the content of its Si is 6.8wt%-8.2wt% (wt% represents percentage by weight, lower same); Described middle aluminium lamination is between described solder aluminium lamination and described steel layer, the Si content of described middle aluminium lamination is 0.4-0.6wt%, not only not up to liquidus curve 1wt%, and can effectively suppressing the formation of interface compound, the thickness of described middle aluminium lamination is 45-65 ��m; The material of steel layer is 08Al steel.
The metallic composite of the metallic composite of solder aluminium lamination proposed by the invention/centre aluminium lamination/steel three layers and the solder aluminium lamination of prior art/centre aluminium lamination/steel three layers is distinctive in that, the thickness of the middle aluminium lamination of the metallic composite of solder aluminium lamination/centre aluminium lamination/steel three layers that the present invention proposes is 45-65 ��m, and the thickness of the middle aluminium lamination of the metallic composite of the solder aluminium lamination of prior art/centre aluminium lamination/steel three layers is at least 70 ��m, the metallic composite of solder aluminium lamination therefore proposed by the invention/centre aluminium lamination/steel three layers is compared with prior art, substantially save material, reduce cost. it is said that in general, the thickness reduced accounts for the 3-5% of gross thickness, in the case of mass production, the cost of saving is considerable.
Additionally, in manufacturing the process of metallic composite of solder aluminium lamination/centre aluminium lamination/steel three layers proposed by the invention, reduce the Si content (about 0.3%-0.4%) of initial middle aluminium lamination (transition zone), the cost reducing the metallic composite manufacturing solder aluminium lamination proposed by the invention/centre aluminium lamination/steel three layers equally.
Elaborate principle and the thinking of the metallic composite manufacturing solder aluminium lamination/centre aluminium lamination/steel three layers proposed by the invention, the method then setting forth the metallic composite manufacturing solder aluminium lamination/centre aluminium lamination/steel three layers proposed by the invention on this basis first below.
Solder aluminium lamination is 4343 aluminium alloys, wherein the GB of Si content controls 6.8wt%-8.2wt%, and the Si content of the middle aluminium lamination that the present invention to design is about 0.5wt%, because more than 10 times of the silicone content that silicone content is the middle aluminium lamination ultimately formed as 4343 aluminium alloys of solder aluminium lamination, so can adopt reduction initial in the middle of aluminium lamination silicone content, by the Si Elements Diffusion of the solder aluminium lamination way to centre aluminium lamination.
The diffusion of Si may be considered semi-infinite long diffusion couple model, and when diffusion coefficient is constant, the solution's expression of semi-infinite long diffusion couple diffusion equation is as follows:
In formula (1), CSFor the Si concentration of solder aluminium lamination, ClOriginal concentration for the Si of middle aluminium lamination, x is the distance on the surface to solder aluminium lamination, t is diffusion time, the metallic composite holding time of solder aluminium lamination namely proposed by the invention/centre aluminium lamination/steel three layers, wherein erf (x) is error function, and D is at a certain temperature, elements A diffusion coefficient in element B, such as: at 610 DEG C, Si diffusion coefficient in Al alloy is 1.58 �� 10-12m2/s��
According to above formula and theory analysis it follows that the Si concentration of the middle aluminium lamination of the metallic composite of solder aluminium lamination proposed by the invention/centre aluminium lamination/steel three layers is 0.4wt%-0.6wt%, middle aluminum layer thickness is 45-65 ��m.
Fig. 2 illustrates the schematic flow sheet of the manufacture method of the metallic composite of the solder aluminium lamination/centre aluminium lamination/steel three layers of an embodiment of the present invention. As in figure 2 it is shown, the manufacture method of the metallic composite of the solder aluminium lamination/centre aluminium lamination/steel three layers of present invention proposition comprises the steps:
Step 101, prepares solder aluminium lamination/aluminium lamination two-layer composite;
Specifically, in described aluminium lamination, the content of Si is 0.4-0.6wt%, and the material of described solder aluminium lamination is 4343 aluminium alloys.
Step 102, is combined with each other described solder aluminium lamination/aluminium lamination two-layer composite and steel, and carries out recrystallization annealing temperature process, obtain the three-layer metal composite of solder aluminium lamination/centre aluminium lamination/steel, and the thickness of described middle aluminium lamination is 45-65 ��m;
Specifically, the material of described steel is 08Al steel.
Step 103, carries out soldering process by the three-layer metal composite of the aluminium lamination of solder described in step 102/centre aluminium lamination/steel;
Specifically, the condition of soldering processes is: temperature 610 �� 5 DEG C, temperature retention time 4-6min.
The following is the specific embodiment of the metallic composite manufacturing solder aluminium lamination/centre aluminium lamination/steel three layers that the present invention proposes.
Embodiment 1
Step 101, prepares solder aluminium lamination/aluminium lamination two-layer composite, and wherein in aluminium lamination, the content of Si is 0.4wt%, the thickness of described solder aluminium lamination/aluminium lamination two-layer composite is 0.24mm, the material of solder aluminium lamination is 4343 aluminium alloys, and thickness is 0.14mm, and aluminum layer thickness is 0.10mm;
Step 102, described solder aluminium lamination/aluminium lamination two-layer composite and steel are combined with each other, wherein composite rolling working modulus is 50%, then recrystallization annealing temperature process is carried out, obtain the three-layer metal composite of solder aluminium lamination/centre aluminium lamination/steel, the thickness of described middle aluminium lamination is 45-55 ��m, and the material of steel is 08Al steel, and its thickness is 2.7mm;
Step 103, the metallic composite of the aluminium lamination of three layers solder described in step 102/centre aluminium lamination/steel three layers is carried out soldering process, the condition of soldering processes is: temperature 610 �� 5 DEG C, temperature retention time 4-6min, after soldering processes terminate, find that the interface cohesion of the three-layer metal composite of described solder aluminium lamination/centre aluminium lamination/steel is good after testing.
Embodiment 2
Step 101, prepares solder aluminium lamination/aluminium lamination two-layer composite, and wherein in aluminium lamination, the content of Si is 0.6wt%, the thickness of described solder aluminium lamination/aluminium lamination two-layer composite is 0.26mm, the material of solder aluminium lamination is 4343 aluminium alloys, and thickness is 0.14mm, and aluminum layer thickness is 0.12mm;
Step 102, described solder aluminium lamination/aluminium lamination two-layer composite and steel are combined with each other, wherein composite rolling working modulus is 50%, then recrystallization annealing temperature process is carried out, obtain the three-layer metal composite of solder aluminium lamination/centre aluminium lamination/steel, the thickness of described middle aluminium lamination can stably at 55-65 ��m, and the material of steel is 08Al steel, and its thickness is 2.7mm;
Step 103, the metallic composite of the aluminium lamination of three layers solder described in step 102/centre aluminium lamination/steel three layers is carried out soldering process, the condition of soldering processes is: temperature 610 �� 5 DEG C, temperature retention time 4-6min, after soldering processes terminate, find that the interface cohesion of the three-layer metal composite of described solder aluminium lamination/centre aluminium lamination/steel is good after testing.
In sum, the present invention proposes the metallic composite of a kind of solder aluminium lamination/centre aluminium lamination/steel three layers, it is compared with the metallic composite of the solder of prior art aluminium lamination/centre aluminium lamination/steel three layers, the thickness of the middle aluminium lamination of the metallic composite of solder aluminium lamination/centre aluminium lamination/steel three layers that the present invention proposes is 45-65 ��m, and the thickness of the middle aluminium lamination of the metallic composite of the solder aluminium lamination of prior art/centre aluminium lamination/steel three layers is at least 70 ��m, the metallic composite of solder aluminium lamination therefore proposed by the invention/centre aluminium lamination/steel three layers is compared with prior art, substantially save material, reduce cost. it is said that in general, the thickness reduced accounts for the 3-5% of gross thickness, in the case of mass production, the cost of saving is considerable.
Additionally, in manufacturing the process of metallic composite of solder aluminium lamination/centre aluminium lamination/steel three layers proposed by the invention, reduce the Si content (about 0.3%-0.4%) of initial middle aluminium lamination (transition zone), the cost reducing the metallic composite manufacturing solder aluminium lamination proposed by the invention/centre aluminium lamination/steel three layers equally.
The invention allows for the manufacture method of the metallic composite of this solder aluminium lamination/centre aluminium lamination/steel three layers, it can produce the metallic composite of solder as above aluminium lamination/centre aluminium lamination/steel three layers, and the method has easy and simple to handle, it is not necessary to the advantage of the extra external equipment adding prior art.
Each technical characteristic of above-mentioned disclosure is not limited to that disclosed with further feature combination, and those skilled in the art also can carry out other combination between each technical characteristic according to the purpose of invention, and the purpose to realize the present invention is as the criterion.
Claims (8)
1. a three-layer metal composite, comprising:
Solder aluminium lamination;
Middle aluminium lamination;
Steel layer;
Described middle aluminium lamination is between described solder aluminium lamination and described steel layer, and the Si content of described middle aluminium lamination is 0.4-0.6wt%, and thickness is 45-65 ��m.
2. three-layer metal composite as claimed in claim 1, it is characterised in that the material of wherein said solder aluminium lamination is 4343 aluminium alloys.
3. three-layer metal composite as claimed in claim 1, it is characterised in that the material of wherein said steel layer is 08Al steel.
4. a manufacture method for three-layer metal composite, it comprises the steps:
Step 101, prepares solder aluminium lamination/aluminium lamination two-layer composite;
Step 102, is combined with each other described solder aluminium lamination/aluminium lamination two-layer composite and steel, and carries out recrystallization annealing temperature process, obtain the three-layer metal composite of solder aluminium lamination/centre aluminium lamination/steel, and the thickness of described middle aluminium lamination is 45-65 ��m;
Step 103, carries out soldering process by the three-layer metal composite of described solder aluminium lamination/centre aluminium lamination/steel.
5. method as claimed in claim 4, it is characterised in that the material of wherein said solder aluminium lamination is 4343 aluminium alloys.
6. method as claimed in claim 4, it is characterised in that the described steel in wherein said step 102 is 08Al steel.
7. method as claimed in claim 4, it is characterised in that the initial Si content of the described aluminium lamination in step 101 belonging to wherein is 0.4-0.6wt%.
8. method as claimed in claim 4, it is characterised in that the condition that soldering processes is: temperature 610 �� 5 DEG C, temperature retention time 4-6min.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3739300C1 (en) * | 1987-11-20 | 1989-04-20 | Wickeder Eisen Und Stahlwerk G | Process and aluminium sheeting for manufacturing roll-bonded sheet metal |
| CN102814598A (en) * | 2012-06-19 | 2012-12-12 | 银邦金属复合材料股份有限公司 | 4343 aluminum alloy for brazing |
| CN103492174A (en) * | 2011-03-16 | 2014-01-01 | 美铝公司 | Multi-layer brazing sheet |
| CN103600524A (en) * | 2013-11-20 | 2014-02-26 | 银邦金属复合材料股份有限公司 | Aluminum coated steel pipe material with brazing filler metal |
| CN104801878A (en) * | 2015-04-22 | 2015-07-29 | 北京工业大学 | High-temperature-resistant braze welding brazing aluminum/connecting aluminum/steel three-layer composite plate |
| CN104962789A (en) * | 2015-05-22 | 2015-10-07 | 北京工业大学 | Aluminium alloy material used for preparing high temperature resistant brazed aluminium/steel composite sheet material prepared from aluminium-silicon brazing filler metal, and preparation method thereof |
-
2016
- 2016-02-16 CN CN201610087854.7A patent/CN105644106A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3739300C1 (en) * | 1987-11-20 | 1989-04-20 | Wickeder Eisen Und Stahlwerk G | Process and aluminium sheeting for manufacturing roll-bonded sheet metal |
| CN103492174A (en) * | 2011-03-16 | 2014-01-01 | 美铝公司 | Multi-layer brazing sheet |
| CN102814598A (en) * | 2012-06-19 | 2012-12-12 | 银邦金属复合材料股份有限公司 | 4343 aluminum alloy for brazing |
| CN103600524A (en) * | 2013-11-20 | 2014-02-26 | 银邦金属复合材料股份有限公司 | Aluminum coated steel pipe material with brazing filler metal |
| CN104801878A (en) * | 2015-04-22 | 2015-07-29 | 北京工业大学 | High-temperature-resistant braze welding brazing aluminum/connecting aluminum/steel three-layer composite plate |
| CN104962789A (en) * | 2015-05-22 | 2015-10-07 | 北京工业大学 | Aluminium alloy material used for preparing high temperature resistant brazed aluminium/steel composite sheet material prepared from aluminium-silicon brazing filler metal, and preparation method thereof |
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