CN104129141A - Method for making light metal composite plate - Google Patents
Method for making light metal composite plate Download PDFInfo
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- CN104129141A CN104129141A CN201410329845.5A CN201410329845A CN104129141A CN 104129141 A CN104129141 A CN 104129141A CN 201410329845 A CN201410329845 A CN 201410329845A CN 104129141 A CN104129141 A CN 104129141A
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Abstract
The invention discloses a method for making a light metal composite plate. The method is technically characterized by comprising the following steps: (1) making a box body and a box cover respectively by using double metal composite plates for later use, and making foamed metal bars for later use; (2) uniformly placing the foamed metal bars into the box body, sealing the box cover on the box body, and sealing an exhaust pipe on the box body; (3) vacuumizing through the exhaust pipe, and laminating and blocking the exhaust pipe; (4) placing the box body into a heating furnace, preserving heat, and taking the heated box body out for warm rolling; (5) flattening the warm-rolled box body, and cutting the flattened box body to obtain a sandwich composite plate blank; and (6) placing the sandwich composite plate blank into a mold, feeding the mold into the heating furnace for foaming, preserving heat to obtain thermal-state sandwich foamed aluminum, putting the thermal-state sandwich foamed aluminum into a cooling device for performing stepped cooling to the room temperature, and performing cutting, trimming and surface treatment to obtain a finished light composite plate. By adopting the method, the problems of high limitation on the conventional production process of the sandwich composite plate and incapability of freely adjusting product specifications as required are solved radically.
Description
Technical field
The present invention relates to a kind of preparation method of composite metal plate, specifically a kind of preparation method of light body composite metal plate, is mainly applicable to make the sandwich composite plate material of layer structure.
Background technology
Sandwich compound foamed aluminum plate has that light weight, intensity are high, fire-retardant, damping, noise reduction, cost performance high, can replace traditional homogeneous metal material completely, therefore can be applicable to numerous areas, and market prospects are wide.Existing sandwich compound foamed aluminum plate, its panel is generally homogeneous metal material (as titanium, steel, aluminium, stainless steel etc.), and preparation method is mainly pack rolling and soldering.
Wherein, first pack rolling method adopts jacket filled and process aluminium foaming powder, is rolled into prefabricated slab, is then foamed into aluminum alloy foam sandwich.But, adopt the method can only obtain the composite plate blanks that thickness is less.Be mainly because in the operation of rolling, easily produce laminar crack when powders compression, technical process is restive and adjust.
Another kind is that homogeneous metal plate and foamed aluminium board are carried out to soldering, and then obtains sandwich compound foamed aluminum plate.Although adopt the method can obtain the composite plate of different-thickness.But foamed aluminium board is prefabricated, cause being difficult to cut into thin plate; Foamed aluminium board specification is conventionally less, is difficult to make large area composite plate; Obtain large area plate if want, certainly will be by fritter foamed aluminium board splicing, but it is lower to splice position intensity, has affected product quality.For this reason, need one not only can freely adjust thickness and area according to product needed, and can ensure the preparation method of plate quality.
Summary of the invention
The object of this invention is to provide a kind of preparation method of light body composite metal plate, fundamentally solved the problem that existing sandwich composite plate production technology limitation is high, can not freely adjust as required product specification.
The object of the present invention is achieved like this: the preparation method of this light body composite metal plate, and its technical essential is to comprise the following steps:
1) with ply-metal make box body respectively, lid is for subsequent use, makes foaming metal bar for subsequent use;
2) polishing cartridge inner surface, foaming metal bar is arranged in box body equably, by lid soldering and sealing on box body, soldering and sealing and the blast pipe being connected in box body on box body;
3) butt welded seam leaks hunting after leak stopping, is evacuated to vacuum≤10Pa by blast pipe, and pressing shutoff blast pipe obtains sandwich composite plate base I;
4) sandwich composite plate base I is placed in heating furnace, at 200 DEG C ~ 400 DEG C, is incubated after 0.2h ~ 1.2h takes out and carries out warm-rolling, obtain sandwich composite plate base II;
5) sandwich composite plate base II is rolled down to after desired thickness, carries out smooth, cutting, obtain sandwich composite plate base III;
6) sandwich composite plate base III being placed in to inner surface applies in zirconic mould, send in heating furnace, the processing of foaming at 500 DEG C ~ 800 DEG C, insulation 10min ~ 90min, obtain hot sandwich foamed aluminium, hot sandwich foamed aluminium is placed in to cooling device and carries out staged and be cooled to room temperature, after cutting, finishing, surface treatment, obtain finished product light metal composite plate;
Foaming metal bar preparation method is as follows:
A) 100 ~ 400 order material powders are mixed and obtain alloy powder I, material powder comprises 8wt% ~ 13wt% silica flour, 1wt% ~ 6wt% magnesium powder, 1wt% ~ 4wt% copper powder, surplus aluminium powder, continue to add 200 ~ 400 order titanium hydride powders to mix in alloy powder I with the 1wt% ~ 5wt% of alloy powder I gross weight, obtain alloy powder II;
B), on hydraulic press operating platform, use powder metallurgy die compacting alloy powder to be made into the column foamed aluminium foaming base of relative density > 85% for subsequent use;
C) the fine and close foaming metal bar that adopts hot-extrusion method that the foamed aluminium foaming base of relative density > 85% is made into relative density 100% is for subsequent use.
Described ply-metal is selected from the one of titanium aluminium sheet, titanium steel plate, aluminium steel plate or stainless steel aluminium sheet.
Described foaming metal bar is selected from the one of cylinder, cuboid or hexahedron.
The advantage that the present invention has and positive technique effect are: be organically combined with rolling sandwich composite plate method by ripe ply-metal preparation method, powder metallurgy are made to foamed aluminium method, can be used for making different plate face sizes, different-thickness, seamless light body composite metal plate.The features such as composite plate structure still, for having the sandwich composite construction of foamed aluminium core, therefore still has insulating noise, the damping of former sandwich composite plate material, heat insulation.But, because the both sides of composite construction have all adopted the ply-metal of metallic bond combination, take into account advantage and the characteristic of different metal material, in conjunction with the honeycomb of foamed aluminium, further strengthen the performance of material monolithic.Sandwich panel adopts ply-metal, adopts powder metallurgical technique base, mold pressing, hot pressing to obtain the foaming body bonding jumper of 100% densification at aluminum alloy foam sandwich preparation method, obtains foamed composite board slab by combination rolled slab, warm-rolling.Obtain again the powder metallurgy foamed aluminium foamed composite board base of different-thickness product by changing rolling method, make for the foaming in later stage, to obtain the light body metal foam composite board product of different-thickness and plate face size.Adopt preparation method of the present invention to can be used for the production of the sandwich composite plate of larger plate face size, different-thickness, facilitate streamlined operation, enhance productivity; Technical process is easy to control, and is applicable to the production of different scales.Fundamentally solve limitation problem in existing technique.Light metal composite plate prepared by the present invention is lighter with respect to homogeneous metal composite plate weight, and specific strength is higher, and specific stiffness is better; Titanium, stainless steel, aluminum metal are anti-corrosion through treatment surface, metal-like; Material structure has insulating noise, damping, heat insulation; Material entire body metallurgical binding, can make seamless light body composite metal plate, can adapt to the whole bag of tricks and carry out following process, comprises mold pressing, curling, perforate, riveted joint, welding etc.Material surface through machine glazed finish, blow sand, chemical stain, electrochemical coloring etc. process processes, and can meet various product appearance requirement.The composite board of the inventive method made is cheap, diverse in function, therefore can be widely used in car covering, track traffic covering, partition, floor, dining table, rotating ladder protection side plate, high-speed elevator cage wall, facade, the industries such as indoor decoration finishing, can replace traditional homogeneous metal material completely.
Detailed description of the invention
Describe content of the present invention in detail below in conjunction with specific embodiment.
embodiment 1
Make a kind of thick and heavy sense for market escalator protective plate, the sub-light of outer surface stainless steel wire drawing, long × wide × thick: the environment friendly light body composite metal plate of 2000mm × 600mm × 20mm, comprises the following steps:
1) according to length × wide × thick: the specification of 2200mm × 1220mm × 20mm, with stainless steel aluminum composite plate make box body respectively, lid is for subsequent use, makes foaming metal bar for subsequent use;
2) polishing cartridge inner surface, foaming metal bar is arranged in box body equably, by lid soldering and sealing on box body, soldering and sealing and the blast pipe being connected in box body on box body; The thickness that prefabricated foaming slab is each layer is respectively: stainless steel 0.3mm, aluminium 0.2mm, foaming metal bar 5mm, aluminium 0.2mm, stainless steel 0.3mm;
3) butt welded seam leaks hunting after leak stopping, is evacuated to vacuum≤10Pa by blast pipe, and pressing shutoff blast pipe obtains sandwich composite plate base I;
4) sandwich composite plate base I is placed in heating furnace, at 200 DEG C ~ 400 DEG C, is incubated after 0.2h ~ 0.5h takes out and carries out warm-rolling, obtain sandwich composite plate base II;
5) sandwich composite plate base II is rolled down to after desired thickness, carries out smooth, cutting, obtain sandwich composite plate base III;
6) sandwich composite plate base III being placed in to inner surface applies in zirconic mould, send in heating furnace, the processing of foaming at 600 DEG C ~ 700 DEG C, insulation 10min ~ 30min, obtain hot sandwich foamed aluminium, hot sandwich foamed aluminium is placed in to outside and is provided with the cooling device of jacket structure for water, by controlling the flow of cooling water, carry out staged and be cooled to room temperature, use water-jet cutting machine to be cut into two, every light body metal protection board size is 2000mm × 600mm × 20mm, composite plate periphery adopts the sealing of 20mm stainless steel band, the welding of the argon arc welding differential of the arc or Laser seal welding, stainless steel surfaces carries out sponge buff polishing to be become sub-light wire-drawing surface and obtains having stainless steel, aluminium, foamed aluminium, aluminium, the finished product light metal composite plate of five layers of metal composite structure of stainless steel.Each layer thickness of the light body metal of finished product sandwich layer structure is not respectively: stainless steel 0.3mm, aluminium 0.2mm, foamed aluminium 19mm, aluminium 0.2mm, stainless steel 0.3mm;
Wherein, foaming metal bar preparation method is as follows:
A) 100 order material powders are mixed and obtain alloy powder I, material powder comprises 8wt% silica flour, 1wt% magnesium powder, 1wt% copper powder, 90wt% aluminium powder, continue to add 200 order titanium hydride powders to mix in alloy powder I with the 2wt% of alloy powder I gross weight, obtain alloy powder II;
B), on hydraulic press operating platform, use powder metallurgy die compacting alloy powder to be made into the column foamed aluminium foaming base of relative density > 85% for subsequent use;
C) the fine and close cuboid foaming metal bar that adopts hot-extrusion method that the foamed aluminium foaming base of relative density > 85% is made into relative density 100% is for subsequent use.
embodiment 2
Make the length on a kind of sponge for rail train carriage floor wheel wire drawing aluminum metal surface × wide × thick and be corrosion-resistant, the damping, noise reduction of 6000mm × 1200mm × 20mm, fire-retardant, insulation, gently body, environment friendly light body composite metal plate that rigidity is large, comprise the following steps:
1) according to length × wide × thick: the specification of 6020mm × 620mm × 20mm, with aluminum-steel composite board make box body respectively, lid is for subsequent use, makes foaming metal bar for subsequent use;
2) polishing cartridge inner surface, foaming metal bar is arranged in box body equably, by lid soldering and sealing on box body, soldering and sealing and the blast pipe being connected in box body on box body; The thickness that prefabricated foaming slab is each layer is respectively: aluminium 0.2mm, steel 0.3mm, foaming metal bar 5mm, steel 0.3mm, aluminium 0.2mm;
3) butt welded seam leaks hunting after leak stopping, is evacuated to vacuum≤10Pa by blast pipe, and pressing shutoff blast pipe obtains sandwich composite plate base I;
4) sandwich composite plate base I is placed in heating furnace, at 200 DEG C ~ 400 DEG C, is incubated after 0.4h ~ 0.8h takes out and carries out warm-rolling, obtain sandwich composite plate base II;
5) sandwich composite plate base II is rolled down to after desired thickness, carries out smooth, cutting, obtain sandwich composite plate base III;
6) sandwich composite plate base III being placed in to inner surface applies in zirconic mould, send in heating furnace, the processing of foaming at 550 DEG C ~ 700 DEG C, insulation 30min ~ 75min, obtain hot sandwich foamed aluminium, hot sandwich foamed aluminium is placed in to outside and is provided with the cooling device of jacket structure for water, by controlling the flow of cooling water, carry out staged and be cooled to room temperature, make water cutter cut finishing and reach specification 6000mm × 600mm × 20mm, finally two composite plates are stitched together, obtain the finished product light metal composite plate of specification 6000 × 1200 × 20mm, each layer thickness of the light body metal of finished product sandwich layer structure is respectively: aluminium 0.2mm, steel 0.3mm, foamed aluminium 19mm, steel 0.3mm, aluminium 0.2mm.
Joining method is: at the aluminium strip of two composite plate length directions, one side folder 1mm × 20mm × 6000mm, adopt the two-sided method of laser weld to connect, then use the aluminium strip of 1mm × 20mm that the sandwich composite plate periphery of 6000mm × 1200mm × 20mm is fenced up and adopts method for laser welding to be welded into one.Finally with sanding machine, light body metal sandwich composite plate is carried out to sponge wheel wire drawing processing, reach product standard.
On foaming metal bar is made, step a) adopts 400 object material powders, and material powder comprises the alloy powder I being made up of 13wt% silica flour, 6wt% magnesium powder, 4wt% copper powder, 77wt% aluminium powder, and the 400 order titanium hydride powders of alloy powder I gross weight 3wt%; Step c) is made tubular foamed strip, and all the other steps are with embodiment 1.
embodiment 3
The periphery that length × wide × thick plate face mould for 1000mm × 4000mm × 4mm of making a kind of outer surface for facade and being the sub-light gold of titanium is pressed into boss, concave station, truncated conical shape to corrosion-resistant, the damping of a side flanging 10mm, noise reduction, fire-retardant, fashion, good decorative property, there is no the environment friendly light body composite metal plate of light pollution, comprise the following steps:
1) according to the specification blanking of length × wide × thick 1040mm × 4040mm × 4mm, with titanium aluminum composite plate make box body respectively, lid is for subsequent use, makes foaming metal bar for subsequent use;
2) polishing cartridge inner surface, is arranged in foaming metal bar in box body equably, and periphery flange 10mm obtains the box body of 1020mm × 4020mm × 4mm specification, by lid soldering and sealing on box body, soldering and sealing and the blast pipe being connected in box body on box body; The thickness that prefabricated foaming slab is each layer is respectively: titanium 0.2mm, aluminium 0.3mm, foaming metal bar 1mm, aluminium 0.3mm, titanium 0.2mm;
3) butt welded seam leaks hunting after leak stopping, is evacuated to vacuum≤10Pa by blast pipe, and pressing shutoff blast pipe obtains sandwich composite plate base I;
4) sandwich composite plate base I is placed in heating furnace, at 200 DEG C ~ 400 DEG C, is incubated after 0.6h ~ 1.2h takes out and carries out warm-rolling, obtain sandwich composite plate base II;
5) sandwich composite plate base II is rolled down to after desired thickness, carries out smooth, cutting, obtain sandwich composite plate base III;
6) sandwich composite plate base III being placed in to inner surface applies in zirconic mould, send in heating furnace, the processing of foaming at 600 DEG C ~ 800 DEG C, insulation 10min, obtain hot sandwich foamed aluminium, hot sandwich foamed aluminium is placed in to outside and is provided with the cooling device of jacket structure for water, by controlling the flow of cooling water, carry out staged and be cooled to room temperature, in the processing of surface spray glass ball, after anodization is painted, obtain thering is titanium, the finished product light metal composite plate of aluminium, foamed aluminium, aluminium, five layers of metal composite structure of titanium.Each layer thickness of the light body metal of finished product sandwich layer structure is respectively: titanium 0.2mm, aluminium 0.3mm, foamed aluminium 4mm, aluminium 0.3mm, titanium 0.2mm;
On foaming metal bar is made, step a) adopts 200 object material powders, and material powder comprises the alloy powder I being made up of 11wt% silica flour, 4wt% magnesium powder, 2wt% copper powder, 83wt% aluminium powder, and the 300 order titanium hydride powders of alloy powder I gross weight 2wt%; Step c) is made tubular foamed strip, and all the other steps are with embodiment 1.
embodiment 4
A preparation method for stainless steel aluminum composite plate, comprises the following steps:
1) with stainless steel aluminum composite plate make box body respectively, lid is for subsequent use, makes foaming metal bar for subsequent use; (specification slightly)
2) polishing cartridge inner surface, foaming metal bar is arranged in box body equably, by lid soldering and sealing on box body, soldering and sealing and the blast pipe being connected in box body on box body;
3) butt welded seam leaks hunting after leak stopping, is evacuated to vacuum≤10Pa by blast pipe, and pressing shutoff blast pipe obtains sandwich composite plate base I;
4) sandwich composite plate base I is placed in heating furnace, at 200 DEG C ~ 400 DEG C, is incubated after 0.8 ~ 1.0h takes out and carries out warm-rolling, obtain sandwich composite plate base II;
5) sandwich composite plate base II is rolled down to after desired thickness, carries out smooth, cutting, obtain sandwich composite plate base III;
6) sandwich composite plate base III being placed in to inner surface applies in zirconic mould, send in heating furnace, the processing of foaming at 600 DEG C ~ 700 DEG C, insulation 68min ~ 90min, obtain hot sandwich foamed aluminium, hot sandwich foamed aluminium is placed in to outside and is provided with the cooling device of jacket structure for water, by controlling the flow of cooling water, carry out staged and be cooled to room temperature, after cutting, finishing, surface treatment, obtain finished product light metal composite plate.
On foaming metal bar is made, step a) adopts 200 object material powders, and material powder comprises the alloy powder I being made up of 9wt% silica flour, 5wt% magnesium powder, 3wt% copper powder, 83wt% aluminium powder, and the 300 order titanium hydride powders of alloy powder I gross weight 3wt%; Step c) is made the foamed strip of hexahedron shape, and all the other steps are with embodiment 1.
Light body metal foam composite board of the present invention be by ply-metal make panel, centre is the layered composite structure of the foamed aluminium of metallic bond combination, is commonly called as foam sandwich metal structure.Ply-metal involved in the present invention is all commercially available, and ply-metal thickness adopts within the scope of 5mm ~ 0.1mm, and can freely select according to the demand of actual product.The title of ply-metal is to name according to the compound order of ecto-entad, as titanium steel composite board refers to that (interior) is followed successively by the sandwich composite construction of titanium, steel, foamed aluminium to sandwich composite plate to middle part by both sides (outward); Stainless steel aluminum composite plate refers to that (interior) is followed successively by the sandwich composite construction of stainless steel, aluminium, foamed aluminium to sandwich composite plate to middle part by both sides (outward); Titanium aluminum composite plate refers to that (interior) is followed successively by the sandwich composite construction of titanium, aluminium, foamed aluminium to sandwich composite plate to middle part by both sides (outward), by that analogy.
Powder metallurgy die pressing belongs to prior art field, below is only briefly described.Powder metallurgy die pressing is that one is the simplest, the most direct forming method.First granulation (wiping sieve granulation, cylinder granulation, mist projection granulating), for example, carries out granulation by the metal-ceramic composite powder end (tungsten carbide) with certain particle size proportioning with metal dust, a small amount of plasticizer.By good fluidity, grain coordinates suitable granular powder to pour in the punching block of definite shape, by means of formpiston, by impressed pressure pressurized on press, just powder pressing can be become to the base substrate of definite shape.The essence of mould pressing process (dry-pressing technique) is that under the effect of external force, particle is close in die space, and inner frictional force links up securely.In moulding, the blank pressurized mode in mould has two kinds of unidirectional pressurized and bi-directional compressions.Can determine pressing mode according to the ratio of height to diameter of blank and thickness.
Claims (3)
1. a preparation method for light body composite metal plate, is characterized in that, comprises the following steps:
1) with ply-metal make box body respectively, lid is for subsequent use, makes foaming metal bar for subsequent use;
2) polishing cartridge inner surface, foaming metal bar is arranged in box body equably, by lid soldering and sealing on box body, soldering and sealing and the blast pipe being connected in box body on box body;
3) butt welded seam leaks hunting after leak stopping, is evacuated to vacuum≤10Pa by blast pipe, and pressing shutoff blast pipe obtains sandwich composite plate base I;
4) sandwich composite plate base I is placed in heating furnace, at 200 DEG C ~ 400 DEG C, is incubated after 0.2h ~ 1.2h takes out and carries out warm-rolling, obtain sandwich composite plate base II;
5) sandwich composite plate base II is rolled down to after desired thickness, carries out smooth, cutting, obtain sandwich composite plate base III;
6) sandwich composite plate base III being placed in to inner surface applies in zirconic mould, send in heating furnace, the processing of foaming at 500 DEG C ~ 800 DEG C, insulation 10min ~ 90min, obtain hot sandwich foamed aluminium, hot sandwich foamed aluminium is placed in to cooling device and carries out staged and be cooled to room temperature, after cutting, finishing, surface treatment, obtain finished product light metal composite plate;
Foaming metal bar preparation method is as follows:
A) 100 ~ 400 order material powders are mixed and obtain alloy powder I, material powder comprises 8wt% ~ 13wt% silica flour, 1wt% ~ 6wt% magnesium powder, 1wt% ~ 4wt% copper powder, surplus aluminium powder, continue to add 200 ~ 400 order titanium hydride powders to mix in alloy powder I with the 1wt% ~ 5wt% of alloy powder I gross weight, obtain alloy powder II;
B), on hydraulic press operating platform, use powder metallurgy die compacting alloy powder to be made into the column foamed aluminium foaming base of relative density > 85% for subsequent use;
C) the fine and close foaming metal bar that adopts hot-extrusion method that the foamed aluminium foaming base of relative density > 85% is made into relative density 100% is for subsequent use.
2. the preparation method of light body composite metal plate according to claim 1, is characterized in that: described ply-metal is selected from the one of titanium aluminium sheet, titanium steel plate, aluminium steel plate or stainless steel aluminium sheet.
3. the preparation method of light body composite metal plate according to claim 1 and 2, is characterized in that: described foaming metal bar is selected from the one of cylinder, cuboid or hexahedron.
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| CN201410329845.5A CN104129141A (en) | 2014-07-11 | 2014-07-11 | Method for making light metal composite plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105172308A (en) * | 2015-09-28 | 2015-12-23 | 昆明理工大学 | Preparing method for titanium-aluminum-stainless-steel composite plate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205359A (en) * | 2011-05-13 | 2011-10-05 | 北京科技大学 | Method for manufacturing foamed aluminum board |
| CN103589892A (en) * | 2013-11-29 | 2014-02-19 | 沈阳工业大学 | Low density and small pore size powder metallurgy foam aluminum composite structure preparation method |
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2014
- 2014-07-11 CN CN201410329845.5A patent/CN104129141A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205359A (en) * | 2011-05-13 | 2011-10-05 | 北京科技大学 | Method for manufacturing foamed aluminum board |
| CN103589892A (en) * | 2013-11-29 | 2014-02-19 | 沈阳工业大学 | Low density and small pore size powder metallurgy foam aluminum composite structure preparation method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105172308A (en) * | 2015-09-28 | 2015-12-23 | 昆明理工大学 | Preparing method for titanium-aluminum-stainless-steel composite plate |
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