CN113085283A - Aluminum steel composite plate for brazing and honeycomb plate with steel as panel - Google Patents
Aluminum steel composite plate for brazing and honeycomb plate with steel as panel Download PDFInfo
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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
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
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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
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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
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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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
- B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
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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
- B32B2250/00—Layers arrangement
- B32B2250/03—3 layers
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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
- B32B2255/00—Coating on the layer surface
- B32B2255/06—Coating on the layer surface on metal layer
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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
- B32B2255/00—Coating on the layer surface
- B32B2255/20—Inorganic coating
Abstract
The invention provides an aluminum steel composite plate for brazing, which is characterized in that: it is formed by rolling and compounding a steel layer, an aluminum alloy layer and an aluminum brazing filler metal layer; wherein the steel layer comprises the following components: 0.35 to 0.8 percent of Si, less than or equal to 0.1 percent of Cu, less than or equal to 0.15 to 0.25 percent of Mn, less than or equal to 0.02 percent of P, and the balance of Fe and inevitable impurity elements. The aluminum protective layer is made of 4A60 aluminum alloy, 1100 aluminum alloy or 1050 aluminum alloy. The aluminum brazing filler metal layer is made of 4 series aluminum alloy. Still provide an use honeycomb panel of steel as panel, its characterized in that: the middle of the honeycomb core is made of aluminum alloy, and the upper surface and the lower surface of the honeycomb core are respectively combined with an aluminum brazing filler metal layer of the aluminum-steel composite plate in a brazing mode; the aluminum steel composite panel is the aluminum steel composite panel of claim 1 or 2 or 3. The honeycomb plate which takes steel as the panel material has higher panel strength; the thickness of the aluminum protective layer can be reduced, and the weight reduction effect of the honeycomb plate is achieved.
Description
Technical Field
The invention relates to the technical field of new materials, in particular to an aluminum steel composite plate for brazing and a brazed honeycomb plate with steel as a panel.
Background
The existing brazing aluminum honeycomb plate in the market at present is a metal structural material which is formed by taking an aluminum honeycomb as a core material, covering aluminum panels on two surfaces, combining the core material and the panels, placing the combined core material and the panels into a brazing furnace, and brazing and welding the core material at one time in a temperature field of about 600 ℃. The heating temperature is higher than the melting point of the brazing filler metal and lower than the melting point of the base metal in the welding process, namely the brazing filler metal is molten and the base metal is not molten, the molten brazing filler metal is soaked and filled between the two base metals in the process under the action of capillary attraction, and the two base metals are welded into a whole after being mutually dissolved, diffused, cooled and solidified with the base metals. Between aluminium honeycomb core and the aluminium honeycomb core in this material, all nodes between aluminium honeycomb core and the aluminium panel are metal welded connection, do not add any non-metallic material such as gluing in the centre. The structure has excellent performances of high temperature resistance (600 ℃) welding, light weight, high specific stiffness, sound insulation, heat insulation, flame retardance, shock absorption, energy absorption, electromagnetic shielding and the like, and also has higher strength and rigidity. The space structure material plays a great help for solving the problem of light weight of a customer product, but the upper panel and the lower panel are aluminum materials and are necessarily limited by the influence of the performance of the aluminum materials. The aluminum material has low rigidity, low elastic modulus, poor fatigue property and low hardness. The requirement of customers cannot be met in certain occasions with high requirement on the rigidity of the material.
Research shows that at the brazing temperature (about 600 ℃), steel contacts with liquid aluminum brazing filler metal, and intermetallic compounds are generated on the interface. Therefore, in general, an aluminum-steel composite plate for brazing is additionally provided with an aluminum protective layer with a high melting point between a steel layer and an aluminum brazing filler metal layer. The aluminum protective layer is not melted during brazing, and generation of compounds at the interface between the aluminum protective layer and steel is suppressed by optimizing the alloy (adding elements such as Si and Er to the aluminum protective layer). Meanwhile, in order to ensure the effect of suppressing the generation of the interface compound, there is a certain requirement for the thickness of the aluminum protective layer.
Patent CN103144371A provides a heat-resistant aluminum steel composite plate for brazing, the steel layer is non-alloy ultra-deep drawing steel, and the requirement of carbon content is less than or equal to 0.02%. The brazing aluminum steel composite plate described in this patent is currently most widely used and is relatively expensive due to the additional requirement of the steel layer for carbon content.
The honeycomb truss has the advantages of firm structure and good mechanical property, is widely applied to the industrial field, and is greatly helpful for solving the problem of light weight of customer products. However, the upper and lower panels are made of aluminum, and are inevitably affected by the properties of the aluminum itself. The aluminum material has low rigidity, low elastic modulus, poor fatigue property and low hardness. The aluminum alloy brazing materials belong to aluminum alloys with lower strength, the high-strength aluminum alloys cannot be brazed due to low melting points, namely, high-strength honeycomb plates cannot be obtained, and the requirements of customers cannot be met in some occasions with high requirements on material rigidity. For example, a drop test of an aluminum honeycomb panel applied as a subway or high-speed rail floor cannot pass so far, and a solution cannot be found.
The maintenance cost of products made of aluminum honeycomb panels or aluminum plates is very high due to the difficulty in recovering the aluminum plates after deformation. For example, once a large accident occurs to a pure aluminum vehicle, the vehicle is obviously deformed, and the maintenance cost is extremely high.
In summary, the prior art has the following disadvantages:
1. the aluminum honeycomb panel is not enough in rigidity and strength and is easy to deform.
2. The aluminum steel composite board adopting the steel panel is the existing aluminum steel composite board, and the steel is non-alloy ultra-deep drawing steel and has high price.
Disclosure of Invention
The invention provides an aluminum steel composite plate for brazing, which aims to overcome the defects of the prior art, reduce the cost, reduce the thickness of an aluminum protective layer and reduce the weight of a honeycomb plate.
The invention also provides a honeycomb plate with steel as a panel, and aims to ensure that the honeycomb plate has higher panel rigidity and strength.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the aluminum steel composite plate for brazing is characterized in that:
it is formed by rolling and compounding a steel layer, an aluminum alloy layer and an aluminum brazing filler metal layer; wherein the steel layer comprises the following components: 0.35 to 0.8 percent of Si, less than or equal to 0.1 percent of Cu, less than or equal to 0.15 to 0.25 percent of Mn, less than or equal to 0.02 percent of P, and the balance of Fe and inevitable impurity elements.
The aluminum protective layer is made of 4A60 aluminum alloy, 1100 aluminum alloy or 1050 aluminum alloy.
The aluminum solder layer is made of 4 series aluminum alloy, such as 4343 aluminum alloy.
The utility model provides an use honeycomb panel of steel as panel which characterized in that:
the middle of the honeycomb core is made of aluminum alloy, and the upper surface and the lower surface of the honeycomb core are respectively combined with an aluminum brazing filler metal layer of the aluminum-steel composite plate in a brazing mode; the aluminum steel composite panel is the aluminum steel composite panel of claim 1 or 2 or 3.
The invention has the advantages that:
1. the honeycomb plate takes steel as a panel material, so that the panel strength is higher and the application field is wider;
2. compared with non-alloy ultra-deep drawing steel used for aluminum steel composite plates in the market, the novel steel for the honeycomb plate provided by the invention does not make special requirements on the carbon content of the steel, only a small amount of Si (0.35-0.8%) is additionally added, and the cost is reduced. The addition of a small amount of Si in the steel avoids the generation of an interface compound with the aluminum protective layer, and simultaneously, the thickness of the aluminum protective layer can be reduced, thereby achieving the effect of reducing the weight of the honeycomb plate.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is an aluminum steel interface after brazing a honeycomb core of example 1 of the present invention;
FIG. 2 is an aluminum steel interface after brazing a honeycomb core of example 2 of the present invention;
FIG. 3 is an aluminum steel interface after brazing a honeycomb core of example 3 of the present invention;
fig. 4 is a perspective view of the honeycomb panel of the present invention.
Detailed Description
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained according to the drawings without inventive labor.
As shown in fig. 4:
the invention provides a honeycomb plate with steel as a panel,
the aluminum steel honeycomb panel 2 comprises a steel layer 201, an aluminum protective layer 202, an aluminum brazing filler metal layer 203, a honeycomb core 204 made of aluminum alloy, an aluminum brazing filler metal layer 205, an aluminum protective layer 206 and a steel layer 207.
The thickness of the aluminum solder layer 203 is 10-20% of that of the aluminum protective layer 202, and the thickness of the aluminum solder layer 205 is 10-20% of that of the aluminum protective layer 206.
The aluminum steel composite board of the steel layer/aluminum protective layer/aluminum brazing filler metal layer (the aluminum steel composite board of the steel layer/aluminum protective layer/aluminum brazing filler metal layer is formed by the steel layer 201, the aluminum protective layer 202 and the aluminum brazing filler metal layer 203, the aluminum steel composite board of the steel layer/aluminum protective layer/aluminum brazing filler metal layer is formed by the steel layer 207, the aluminum protective layer 206 and the aluminum brazing filler metal layer 205), then the upper surface and the lower surface of the aluminum steel composite board of the steel layer/aluminum protective layer/aluminum brazing filler metal layer and the aluminum honeycomb core 204 are respectively welded by high-temperature brazing (about 600 ℃) to form the aluminum steel honeycomb board 2 taking the steel (the steel layer 201 and the steel layer 207) as the panel, and the strength and the rigidity of the honeycomb board taking the steel as the panel are far higher than those of the honeycomb board taking the aluminum as the panel.
The steel for the panel, namely the steel layer 201 and the steel layer 207, does not have special requirements on carbon content, and reduces the cost. Meanwhile, a small amount of Si is added into the steel, so that the generation of interface chemical combination of the steel layer and the aluminum protective layer is inhibited, the interface bonding strength is ensured, the thickness of the aluminum protective layer can be reduced, and the weight reduction effect is achieved. The steel layer comprises the following components: 0.35 to 0.8 percent of Si, less than or equal to 0.1 percent of Cu, less than or equal to 0.15 to 0.25 percent of Mn, less than or equal to 0.02 percent of P, and the balance of Fe and inevitable impurity elements.
The following aluminum-steel composite plate is an aluminum-steel composite plate with a steel layer 201, an aluminum protective layer 202 and an aluminum brazing filler metal layer 203 constituting a steel layer/aluminum protective layer/aluminum brazing filler metal layer, or an aluminum-steel composite plate with a steel layer 207, an aluminum protective layer 206 and an aluminum brazing filler metal layer 205 constituting a steel layer/aluminum protective layer/aluminum brazing filler metal layer, and the honeycomb core is a honeycomb core 204 made of an aluminum alloy material.
Example 1:
and (3) preparing the aluminum-steel composite plate by cold rolling and compounding, wherein the thickness of a steel layer is 0.5mm, the thickness of an aluminum protective layer is 0.05mm, and the thickness of an aluminum brazing filler metal layer is 0.01 mm. The steel layer comprises the following components: 0.38% of Si, 0.05% of Cu, 0.17% of Mn, 0.01% of P, and the balance of Fe and inevitable impurity elements. The aluminum protective layer is made of 4A60 aluminum alloy, and the aluminum brazing filler metal layer is made of 4 series material aluminum alloy, such as 4343 aluminum alloy.
Taking the aluminum steel composite plate and the honeycomb core, cutting the aluminum steel composite plate and the honeycomb core into corresponding sizes, spraying potassium fluoroaluminate brazing flux on the upper surface and the lower surface of the honeycomb core, covering the composite plate on the upper surface and the lower surface of the honeycomb core, enabling the steel layer to face outwards, and enabling the aluminum brazing flux layer to be in contact with the upper surface and the lower surface of the honeycomb core. And (3) brazing the assembled honeycomb plate through a 600 ℃ protective atmosphere (argon gas) to complete the welding of the aluminum steel composite plate and the honeycomb core. The honeycomb core and the aluminum steel composite plate have good interface bonding without interface compounds, and the figure is 1.
The aluminum steel honeycomb plate after brazing has no obvious deformation and damage in a drop test.
Example 2:
and (3) preparing the aluminum-steel composite plate by cold rolling and compounding, wherein the thickness of a steel layer is 0.4mm, the thickness of an aluminum intermediate layer is 0.06mm, and the thickness of an aluminum brazing filler metal layer is 0.01 mm. The steel layer comprises the following components: 0.61% of Si, 0.03% of Cu, 0.13% of Mn, 0.01% of P, and the balance of Fe and inevitable impurity elements. The aluminum protective layer is made of 1100 aluminum alloy, and the aluminum brazing filler metal layer is made of 4-series aluminum alloy, such as 4343 aluminum alloy.
Taking the aluminum steel composite plate and the honeycomb core, cutting the aluminum steel composite plate and the honeycomb core into corresponding sizes, spraying potassium fluoroaluminate brazing flux on the upper surface and the lower surface of the honeycomb core, covering the aluminum steel composite plate on the upper surface and the lower surface of the honeycomb core with the steel layer facing outwards, and enabling the aluminum brazing flux layer to be in contact with the upper surface and the lower surface of the honeycomb core. And (3) brazing the assembled honeycomb plate in a 590 ℃ protective atmosphere (argon gas) to complete the welding of the aluminum steel composite plate and the honeycomb core. The honeycomb core and the aluminum steel composite plate have good interface bonding and no interface compound, and the figure is 2.
The aluminum steel honeycomb plate after brazing has no obvious deformation and damage in a drop test.
Example 3:
and (3) preparing the aluminum-steel composite plate by cold rolling and compounding, wherein the thickness of the steel layer is 0.45mm, the thickness of the aluminum intermediate layer is 0.04mm, and the thickness of the aluminum brazing filler metal layer is 0.01 mm. The steel layer comprises the following components: 0.78% of Si, 0.03% of Cu, 0.16% of Mn, 0.01% of P, and the balance of Fe and inevitable impurity elements. The aluminum protective layer is 1050 aluminum alloy, and the aluminum brazing filler metal layer is 4 series material aluminum alloy, such as 4343 aluminum alloy.
Taking the aluminum steel composite plate and the honeycomb core, cutting the aluminum steel composite plate and the honeycomb core into corresponding sizes, spraying potassium fluoroaluminate brazing flux on the upper surface and the lower surface of the honeycomb core, covering the aluminum steel composite plate on the upper surface and the lower surface of the honeycomb core with the steel layer facing outwards, and enabling the aluminum brazing flux layer to be in contact with the upper surface and the lower surface of the honeycomb core. And (3) brazing the assembled honeycomb plate at 595 ℃ in a protective atmosphere (argon gas) to complete the welding of the aluminum steel composite plate and the honeycomb core. The honeycomb core and the aluminum steel composite plate have good interface bonding and no interface compound exists, and the figure is shown in figure 3.
The aluminum steel honeycomb plate after brazing has no obvious deformation and damage in a drop test.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. The aluminum steel composite plate for brazing is characterized in that:
it is formed by rolling and compounding a steel layer, an aluminum alloy layer and an aluminum brazing filler metal layer; wherein the steel layer comprises the following components: 0.35 to 0.8 percent of Si, less than or equal to 0.1 percent of Cu, less than or equal to 0.15 to 0.25 percent of Mn, less than or equal to 0.02 percent of P, and the balance of Fe and inevitable impurity elements.
2. The brazing aluminum steel composite panel according to claim 1, wherein: the aluminum protective layer is made of 4A60 aluminum alloy, 1100 aluminum alloy or 1050 aluminum alloy.
3. The brazing aluminum steel composite panel according to claim 1, wherein: the aluminum brazing filler metal layer is made of 4 series aluminum alloy.
4. The utility model provides an use honeycomb panel of steel as panel which characterized in that:
the middle of the honeycomb core is made of aluminum alloy, and the upper surface and the lower surface of the honeycomb core are respectively combined with an aluminum brazing filler metal layer of the aluminum-steel composite plate in a brazing mode; the aluminum steel composite panel is the aluminum steel composite panel of claim 1 or 2 or 3.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113733687A (en) * | 2021-09-08 | 2021-12-03 | 河北工业大学 | Manufacturing method of high-strength honeycomb composite board |
| CN113844123A (en) * | 2021-09-18 | 2021-12-28 | 南通三多电子科技有限公司 | High-temperature honeycomb sandwich board and manufacturing method thereof |
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| 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 |
| US20170008132A1 (en) * | 2014-03-24 | 2017-01-12 | Beijing University Of Technology | Aluminum alloy and corresponding heat treatment process applied to manufacture aluminum/steel cladding plates resistant to high temperature brazing |
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2019
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| US20170008132A1 (en) * | 2014-03-24 | 2017-01-12 | Beijing University Of Technology | Aluminum alloy and corresponding heat treatment process applied to manufacture aluminum/steel cladding plates resistant to high temperature brazing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113733687A (en) * | 2021-09-08 | 2021-12-03 | 河北工业大学 | Manufacturing method of high-strength honeycomb composite board |
| CN113844123A (en) * | 2021-09-18 | 2021-12-28 | 南通三多电子科技有限公司 | High-temperature honeycomb sandwich board and manufacturing method thereof |
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Address after: 361000 room 1, room 1619, No. 885, Xiahe Road, Siming District, Xiamen City, Fujian Province Applicant after: Xiamen Zhongqian Industrial Co.,Ltd. Address before: Room 601, no.99-3, Wenping, Siming District, Xiamen City, Fujian Province, 361000 Applicant before: XIAMEN ZHONGQIAN INDUSTRIAL Co.,Ltd. |
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| CB02 | Change of applicant information |