CN111497376A - Brazing aluminum plate for sound insulation honeycomb plate and manufacturing method thereof - Google Patents
Brazing aluminum plate for sound insulation honeycomb plate and manufacturing method thereof Download PDFInfo
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- CN111497376A CN111497376A CN202010299371.XA CN202010299371A CN111497376A CN 111497376 A CN111497376 A CN 111497376A CN 202010299371 A CN202010299371 A CN 202010299371A CN 111497376 A CN111497376 A CN 111497376A
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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
- B32B15/016—Layered products comprising a layer of metal all layers being exclusively metallic all layers being formed of aluminium or aluminium alloys
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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
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/043—Changing 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
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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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Abstract
The invention discloses a brazing aluminum plate for a sound insulation honeycomb plate, and relates to the technical field of aluminum foil rolling manufacturing, wherein the aluminum plate comprises a core layer and a brazing layer; the core layer comprises two or more alloy layers, the alloy layers comprise aluminum and other metals or non-metals, the brazing layer comprises aluminum and other metals or non-metals, and the brazing aluminum plate is manufactured by the following steps: respectively smelting and cast-rolling the core layer material and the brazing layer material to obtain respective blanks; respectively carrying out rough rolling and annealing on the core layer blank and the brazing layer blank to obtain respective semi-finished products; rolling and compounding the core layer semi-finished product and the brazing layer semi-finished product to obtain a composite blank; carrying out rough rolling and trimming on the composite blank to obtain a blank finished product; molding the embryonic finished product to obtain a finished product; the quality of the finished product is checked, and the qualified finished product is packaged.
Description
Technical Field
The invention relates to the technical field of aluminum foil rolling manufacturing, in particular to a brazing aluminum plate for a sound insulation honeycomb plate and a manufacturing method thereof.
Background art:
the traditional sound insulation honeycomb plate adopts an aluminum alloy bottom plate and a panel, a hexagonal aluminum foil honeycomb core or foamed aluminum is internally bonded in an adhesive in the middle, and the honeycomb plate is formed by hot-pressing composite molding; or PVC bottom board and face board are used, and hexagonal or special-shaped PVC honeycomb core or PVC foam is stuck in the middle of the PVC bottom board and face board by adhesive, and the honeycomb board is formed by hot-pressing composite molding. The plate has low compression resistance, poor impact resistance and poor sound insulation effect, and particularly the plate prepared from the PVC material and the adhesive has low fire-proof rating.
Disclosure of Invention
The invention aims to provide a brazing aluminum plate for a sound insulation honeycomb plate and a manufacturing method thereof, and aims to overcome the defects of low fire-proof grade and poor impact resistance in the prior art.
A brazing aluminum plate for a sound-insulating honeycomb plate comprises a core layer and a brazing layer; the core layer comprises two or more alloy layers, the alloy layers comprise aluminum and other metals or non-metals cast-rolled, and the brazing layer comprises aluminum and other metals or non-metals combined.
Further, the alloy layer comprises one or more of Si, Fe, Cu, Mn, Zn, Ti and Al.
Further, the brazing layer comprises one or more of Si, Fe, Cu, Mn, Ti and Al.
A method of manufacturing a brazing aluminum sheet for a soundproof honeycomb panel, the method comprising the steps of:
respectively smelting and cast-rolling the core layer material and the brazing layer material to obtain respective blanks;
respectively carrying out rough rolling and annealing on the core layer blank and the brazing layer blank to obtain respective semi-finished products;
rolling and compounding the core layer semi-finished product and the brazing layer semi-finished product to obtain a composite blank;
carrying out rough rolling and trimming on the composite blank to obtain a blank finished product;
molding the embryonic finished product to obtain a finished product;
checking the quality of the finished product, and packaging the qualified finished product.
Furthermore, the brazing layer material comprises silicon element, the silicon element is added in a powder spraying mode, and the granularity of the added silicon powder is not more than 30 meshes.
Further, the rolling and compounding method comprises the following steps:
cleaning the connecting surface of the core layer semi-finished product and the brazing semi-finished product;
and (4) rolling and compounding after cleaning, wherein the rolling force is not less than 1800T.
Further, the method for molding the blank finished product to obtain the finished product comprises the following steps:
cleaning and trimming the blank finished product;
annealing the trimmed embryonic finished product;
and cutting the blank finished product according to the specification after the annealing is finished to obtain a finished product.
Further, the method for annealing the trimmed rudiment finished product comprises the following steps:
placing the embryonic finished product in a furnace;
keeping the oxygen content in the furnace to be not more than 3000 PPM;
and introducing nitrogen into the furnace, heating to 300-420 ℃ at the speed of 0.5-3.0 ℃/min, and keeping the temperature for 120-480 min.
Further, the method for cutting the rudiment finished product according to the specification to obtain the finished product comprises the following steps:
detecting the mechanical property of a finished product, wherein the tensile strength is 95-145 MPa, and the elongation is more than or equal to 20%;
inspecting the brazing layer by adopting a flame spray gun, and marking the surface of the brazing layer by a marking roller;
and cutting according to the mark to obtain a finished product.
Further, the method for checking the quality of the finished product and packaging the qualified finished product comprises the following steps:
during inspection, ensuring that no more than 3 waves within a range of 1m in the longitudinal and transverse directions and the wave height is no more than 8 mm;
when in packaging, the packaging paper is stacked in a stacking mode, and the play between two adjacent layers is not more than 3 mm.
The invention has the advantages that: the brazing aluminum plate for the sound-insulation honeycomb plate ensures that the sound-insulation honeycomb plate has higher fire resistance by adopting the brazing mode, ensures that the honeycomb plate has good welding quality due to large recombination rate, has flat plate shape and high strength after welding, ensures that the honeycomb plate has accurate size after welding, is widely applied to the fields of high-speed rail sound insulation, national defense industry, aerospace, petrochemical industry, home decoration and the like, and has obvious practical values on market development, energy conservation and emission reduction.
Drawings
FIG. 1 is a schematic flow diagram of the process of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
A brazing aluminum plate for a sound-insulating honeycomb plate comprises a core layer and a brazing layer; the core layer comprises two or more alloy layers, the alloy layers comprise aluminum and other metals or non-metals cast-rolled, and the brazing layer comprises aluminum and other metals or non-metals combined.
The alloy layer comprises one or more of Si, Fe, Cu, Mn, Zn, Ti and Al;
wherein the core layer comprises an AA3003 alloy layer, and the composite components comprise:
si: 0.10-0.30%, Fe: 0.30-0.60%, Cu: 0.05 to 0.25%, Mn: 1.0-1.2%, Zn: less than or equal to 0.1 percent, less than or equal to 0.03 percent of Ti, and the balance of Al;
the alloy further comprises a DS302 alloy layer, and the composite components of the alloy layer comprise:
si: 0.10-0.30%, Fe: 0.30-0.60%, Cu: 0.4-0.6%, Mn: 1.0-1.2%, Zn: less than or equal to 0.1 percent, Ti: less than or equal to 0.03 percent, and the rest is Al;
the brazing layer comprises one or more of Si, Fe, Cu, Mn, Ti and Al;
the composite components comprise:
si: 6.8-8.2%, Fe: 0.05-0.25%, Cu: less than or equal to 0.10 percent, Mn: less than or equal to 0.10 percent, Ti: less than or equal to 0.05 percent, and the balance of Al.
A method of manufacturing a brazing aluminum sheet for a soundproof honeycomb panel, the method comprising the steps of:
the method comprises the following steps: respectively smelting and cast-rolling the core layer material and the brazing layer material to obtain respective blanks;
the brazing layer material comprises a silicon element, the silicon element is added in a powder spraying mode, and the granularity of added silicon powder is not more than 30 meshes;
step two: respectively carrying out rough rolling and annealing on the core layer blank and the brazing layer blank to obtain respective semi-finished products;
the method comprises the following specific steps:
carrying out rough rolling on the core layer blank, rolling the core layer blank into a blank with the thickness of 3.5-6.5 mm through 1-3 passes, and then carrying out homogenization annealing treatment;
blank annealing is carried out on the brazing layer blank, then rough rolling is carried out, the thickness of the blank is 0.5-1.0 mm after 4-8 passes of rolling, and then finished product annealing is carried out after edge cutting;
step three: rolling and compounding the core layer semi-finished product and the brazing layer semi-finished product to obtain a composite blank;
the rolling and compounding method comprises the following steps:
cleaning the connecting surface of the core layer semi-finished product and the brazing semi-finished product;
ensuring that the oxide film on the surface of the composite surface is completely processed, completely sucking the aluminum powder of the oxide film generated after processing through a negative pressure suction device, and feeding the two layers of materials subjected to surface processing into a roller for rolling and compounding;
and (3) rolling and compounding are carried out after cleaning, the rolling force is not less than 1800T, and a lubricant is smeared on the surface of the roller for lubrication in the rolling process, so that the blank is prevented from being stuck to the roller.
Step four: carrying out rough rolling and trimming on the composite blank to obtain a blank finished product;
roughly rolling the composite blank, rolling the composite blank into a blank with the thickness of 0.5-2.5 mm by 2-6 passes, and cleaning and trimming the surface of the blank;
step five: molding the embryonic finished product to obtain a finished product;
the method comprises the following steps:
cleaning and trimming the blank finished product;
straightening by a stretch bending straightener, and cleaning and trimming the surface by adopting high-temperature hot water and a degreasing agent;
annealing the trimmed embryonic finished product;
the method comprises the following steps:
placing the embryonic finished product in a furnace;
keeping the oxygen content in the furnace to be not more than 3000 PPM;
introducing nitrogen into the furnace, heating to 300-420 ℃ at the speed of 0.5-3.0 ℃/min, and keeping the temperature for 120-480 min;
cutting the blank finished product according to the specification after the annealing is finished to obtain a finished product;
the method comprises the following steps:
detecting the mechanical property of a finished product, wherein the tensile strength is 95-145 MPa, and the elongation is more than or equal to 20%;
inspecting the brazing layer by adopting a flame spray gun, and marking the surface of the brazing layer by a marking roller;
and cutting according to the mark to obtain a finished product.
Step six: checking the quality of finished products, and packaging qualified finished products:
the packaging method comprises the following steps:
during inspection, ensuring that no more than 3 waves within a range of 1m in the longitudinal and transverse directions and the wave height is no more than 8 mm;
when in packaging, the packaging paper is stacked in a stacking mode, and the play between two adjacent layers is not more than 3 mm.
The method for producing the aluminum brazing sheet for the soundproof honeycomb panel according to the present invention is further illustrated by the following examples:
example 1
1) According to the weight percentage of Si: 0.12%, Fe: 0.41%, Cu: 0.08%, Mn: 1.1%, Ti: 0.03 percent, and the balance of Al as basic components, preparing alloy raw materials, and carrying out core layer blank smelting and cast-rolling to obtain a 7.0mm cast-rolled coil, namely an alloy AA 3003;
according to the weight percentage of Si: 7.6%, Fe: 0.20%, Ti: 0.02 percent, and the balance of Al as basic components, preparing alloy raw materials, and carrying out brazing layer blank smelting and cast-rolling to obtain 6.8mm cast-rolled coils, namely an alloy of 4343 percent;
2) preparing a core layer: carrying out rough rolling on the AA3003 cast-rolled mother coil, rolling the roll to the thickness of 5.1mm according to the thickness of 7.0-5.1, carrying out homogenization annealing, heating to 570 ℃, preserving heat for 8 hours, cooling and discharging;
3) preparing a brazing layer: annealing the 4343 cast-rolling mother coil blank according to the design of the theoretical recombination rate of 12 percent, heating the blank to 450 ℃ for 18h, keeping the temperature for 6h, cooling and discharging the blank, then roughly rolling the blank to 0.7mm in thickness according to the thickness of 6.8 mm-5.2 mm-3.6 mm-2.5 mm-1.6 mm (cooling for 12 h) -0.95 mm-0.7 mm, then cutting edges, straightening by a stretch-bending straightener, finally annealing the finished product, heating the blank to 280 ℃ and keeping the temperature for 3h, cooling and discharging the product;
4) cold rolling and compounding: the core layer and the brazing layer obtained in the steps 2 and 3 are compounded into a composite blank with the thickness of 2.8mm according to the thickness of 0.7mm +5.1 mm-2.8 mm through cold rolling, and the pass processing rate is 51.7%;
5) rolling the composite blank obtained in the step 4 by rough rolling according to the pass of 2.8 mm-1.4 mm-0.75 mm-0.5 mm to the thickness of 0.5mm +/-0.01 mm of the finished product pass;
6) cleaning the surface of the finished product with the thickness of 0.5mm prepared in the step 5 by using a stretch bending straightener, and cutting the edge to 1230 mm;
7) annealing the finished product from the material roll with the pass of 0.5mm, introducing nitrogen for production, heating to 300 ℃, preserving heat for 3 hours, cooling and discharging;
8) and (3) cutting plates 0.5X 1200X 1180mm, and straightening the plate types through straightening by 23 rollers during cutting.
When the brazing aluminum plate (inner plate) for the sound-insulating honeycomb plate is detected, the tensile strength is 115MPa, the elongation is 32%, the recombination rate is 12.2%, 11.9%, 12.3%, the wave height is 3, the wave height is 7.2mm, 7.5 mm and 7.8mm, the welded honeycomb plate is flat and has no abnormal phenomena such as unqualified honeycomb plate, and the requirements of the sound-insulating honeycomb plate are met.
Example 2
a) According to the weight percentage of Si: 0.15%, Fe: 0.44%, Cu: 0.55%, Mn: 1.18%, Ti: 0.03 percent, and the balance of Al as basic components, preparing alloy raw materials, carrying out core layer blank smelting and cast-rolling to obtain 7.2mm cast-rolled coils, and naming the internal alloy as 'DS 302';
according to the weight percentage of Si: 7.6%, Fe: 0.20%, Ti: 0.02 percent, and the balance of Al as basic components, preparing alloy raw materials, and carrying out brazing layer blank smelting and cast-rolling to obtain 6.8mm cast-rolled coils, namely an alloy of 4343 percent;
b) preparing a core layer: carrying out rough rolling on the DS302 cast-rolled mother coil, rolling the mother coil to the thickness of 5.1mm according to the thickness of 7.2 mm-5.1 mm, carrying out homogenization annealing, heating to 580 ℃, preserving heat for 10 hours, cooling and discharging;
c) preparing a brazing layer: annealing the 4343 cast-rolling mother coil for 18 hours to heat to 450 ℃ according to the design of theoretical compound rate of 15%, keeping the temperature for 6 hours, cooling and discharging, then roughly rolling to 0.9mm in thickness according to 6.8 mm-5.2 mm-3.6 mm-2.5 mm (cooling for 12 hours) -1.6 mm-0.9 mm, then cutting edges and straightening by a stretch bending straightener, finally annealing finished products, heating to 320 ℃ and keeping the temperature for 3 hours, cooling and discharging;
d) cold rolling and compounding: c, cold rolling and compounding the core layer and the brazing layer obtained in the step b and the brazing layer into a composite blank with the thickness of 3.5mm according to the thickness of 0.9mm +5.1 mm-3.5 mm, wherein the pass processing rate is 41.7%;
e) rolling the composite blank obtained in the step d by rough rolling according to 3.5-2.5 mm pass to the thickness of 2.5mm +/-0.04 mm of the finished product pass;
f) e, cleaning the surface of the finished product with the thickness of 2.5mm prepared in the step e by using a stretch bending straightening machine;
g) annealing the finished product from a material roll with the finished product pass of 2.5mm, introducing nitrogen for production, heating to 320 ℃, preserving heat for 3 hours, cooling and discharging;
h) and (3) cutting plates 2.5X 1200X 1180mm, and straightening plate types through straightening by 23 rollers during cutting.
When the brazing aluminum plate (outer plate) for the sound-insulation honeycomb plate is detected, the tensile strength is 138MPa, the elongation is 30%, the recombination rate is 15.4%, 14.5% and 15.1%, the wave height is 3.2 mm and 3.5mm, the welded honeycomb plate is flat and free of abnormal phenomena such as unqualified waves, and the requirements of the sound-insulation honeycomb plate are met.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (10)
1. The brazing aluminum plate for the sound-insulation honeycomb plate is characterized by comprising a core layer and a brazing layer; the core layer comprises two or more alloy layers, the alloy layers comprise aluminum and other metals or non-metals cast-rolled, and the brazing layer comprises aluminum and other metals or non-metals combined.
2. The aluminum brazing sheet for a soundproof honeycomb panel according to claim 1, wherein: the alloy layer comprises one or more of Si, Fe, Cu, Mn, Zn, Ti and Al.
3. The aluminum brazing sheet for a soundproof honeycomb panel according to claim 1, wherein: the brazing layer comprises one or more of Si, Fe, Cu, Mn, Ti and Al.
4. The method of manufacturing an aluminum brazing sheet for a soundproof honeycomb panel according to claim 1, wherein: the method comprises the following steps:
respectively smelting and cast-rolling the core layer material and the brazing layer material to obtain respective blanks;
respectively carrying out rough rolling and annealing on the core layer blank and the brazing layer blank to obtain respective semi-finished products;
rolling and compounding the core layer semi-finished product and the brazing layer semi-finished product to obtain a composite blank;
carrying out rough rolling and trimming on the composite blank to obtain a blank finished product;
molding the embryonic finished product to obtain a finished product;
checking the quality of the finished product, and packaging the qualified finished product.
5. The method of manufacturing an aluminum brazing sheet for a soundproof honeycomb panel according to claim 4, wherein: the brazing layer material comprises silicon element, the silicon element is added in a powder spraying mode, and the granularity of the added silicon powder is not more than 30 meshes.
6. The method of manufacturing an aluminum brazing sheet for a soundproof honeycomb panel according to claim 4, wherein: the rolling and compounding method comprises the following steps:
cleaning the connecting surface of the core layer semi-finished product and the brazing semi-finished product;
and (4) rolling and compounding after cleaning, wherein the rolling force is not less than 1800T.
7. The method of manufacturing an aluminum brazing sheet for a soundproof honeycomb panel according to claim 4, wherein: the method for molding the embryonic finished product to obtain the finished product comprises the following steps:
cleaning and trimming the blank finished product;
annealing the trimmed embryonic finished product;
and cutting the blank finished product according to the specification after the annealing is finished to obtain a finished product.
8. The method of manufacturing an aluminum brazing sheet for a soundproof honeycomb panel as set forth in claim 7, wherein: the method for annealing the trimmed embryonic finished product comprises the following steps:
placing the embryonic finished product in a furnace;
keeping the oxygen content in the furnace to be not more than 3000 PPM;
and introducing nitrogen into the furnace, heating to 300-420 ℃ at the speed of 0.5-3.0 ℃/min, and keeping the temperature for 120-480 min.
9. The method of manufacturing an aluminum brazing sheet for a soundproof honeycomb panel as set forth in claim 7, wherein: the method for cutting the rudiment finished product according to the specification to obtain the finished product comprises the following steps:
detecting the mechanical property of a finished product, wherein the tensile strength is 95-145 MPa, and the elongation is more than or equal to 20%;
inspecting the brazing layer by adopting a flame spray gun, and marking the surface of the brazing layer by a marking roller;
and cutting according to the mark to obtain a finished product.
10. The method of manufacturing an aluminum brazing sheet for a soundproof honeycomb panel according to claim 4, wherein: the method for checking the quality of finished products and packaging qualified finished products comprises the following steps:
during inspection, ensuring that no more than 3 waves within a range of 1m in the longitudinal and transverse directions and the wave height is no more than 8 mm;
when in packaging, the packaging paper is stacked in a stacking mode, and the play between two adjacent layers is not more than 3 mm.
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| CN114434108A (en) * | 2022-02-18 | 2022-05-06 | 西南铝业（集团）有限责任公司 | Brazing sheet rolling method |
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| 杨保祥 等编著: "《钛基材料制造》", 31 January 2015, 冶金工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114434108A (en) * | 2022-02-18 | 2022-05-06 | 西南铝业（集团）有限责任公司 | Brazing sheet rolling method |
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