CN107252884A - A kind of big thickness bi-metal composite panel of large area and preparation method thereof - Google Patents
A kind of big thickness bi-metal composite panel of large area and preparation method thereof Download PDFInfo
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- CN107252884A CN107252884A CN201710690075.0A CN201710690075A CN107252884A CN 107252884 A CN107252884 A CN 107252884A CN 201710690075 A CN201710690075 A CN 201710690075A CN 107252884 A CN107252884 A CN 107252884A
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- 239000002905 metal composite material Substances 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000011159 matrix material Substances 0.000 claims abstract description 97
- 238000005266 casting Methods 0.000 claims abstract description 85
- 229910052751 metal Inorganic materials 0.000 claims abstract description 69
- 239000002184 metal Substances 0.000 claims abstract description 69
- 238000009413 insulation Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims description 32
- 229910045601 alloy Inorganic materials 0.000 claims description 26
- 239000000956 alloy Substances 0.000 claims description 26
- 239000007788 liquid Substances 0.000 claims description 26
- 239000011248 coating agent Substances 0.000 claims description 16
- 238000000576 coating method Methods 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 12
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- 238000004140 cleaning Methods 0.000 claims description 10
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
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- 238000009792 diffusion process Methods 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 239000004411 aluminium Substances 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 230000004927 fusion Effects 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000012774 insulation material Substances 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 5
- 238000005554 pickling Methods 0.000 claims description 5
- 238000007711 solidification Methods 0.000 claims description 5
- 230000008023 solidification Effects 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 239000011701 zinc Substances 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000011133 lead Substances 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 238000004381 surface treatment Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
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- 238000004519 manufacturing process Methods 0.000 abstract description 16
- 239000000463 material Substances 0.000 abstract description 12
- 239000002131 composite material Substances 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 9
- 229910000838 Al alloy Inorganic materials 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000006798 recombination Effects 0.000 description 5
- 238000005215 recombination Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 238000005253 cladding Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
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- 238000011160 research Methods 0.000 description 2
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- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910001008 7075 aluminium alloy Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 206010039509 Scab Diseases 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000009750 centrifugal casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 235000012041 food component Nutrition 0.000 description 1
- 239000005417 food ingredient Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
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- 229910052749 magnesium Inorganic materials 0.000 description 1
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- 238000010422 painting Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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- 238000004080 punching Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- -1 semisolid casting Substances 0.000 description 1
- 238000005480 shot peening Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/007—Continuous casting of metals, i.e. casting in indefinite lengths of composite ingots, i.e. two or more molten metals of different compositions being used to integrally cast the ingots
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/08—Casting in, on, or around objects which form part of the product for building-up linings or coverings, e.g. of anti-frictional metal
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses big thickness bi-metal composite panel of a kind of large area and preparation method thereof, including matrix and clad, the bottom of described matrix is provided with mobile platform, described matrix is in insulation casting mold, the top of the insulation casting mold is provided with clearance type casting ladle, the inside of the clearance type casting ladle is provided with clad molten metal, and the left side of the insulation casting mold is provided with spoiler, and the bottom of the insulation casting mold is provided with metal mold.The present invention can produce the large-sized duplex metal composite board material and its panel-like member product of all size, and production range is wide, and production process is easy to control, and production cost is low, efficiency high and properties of product are superior.
Description
Technical field
The present invention relates to foundry engieering and field of new materials, particularly a kind of big thickness bi-metal composite panel of large area and
Its preparation method.
Background technology
Current bimetallic complex method is a lot, mainly there is roll-bonding method, explosion composite method, casting composite algorithm etc..
The problem of there is insufficient diffusion of alloy elements and chemical reaction in Rolling compund, bond strength still has deficiency, and
Process is more, need to clear up raw material surface, and production efficiency is relatively low.Therefore occurring in that will cast with rolling the technology being combined, such as anti-
To solidification, liquid, semisolid casting, liquid, liquid casting etc..Reverse solidification can not produce the larger material of matrix thickness, only
It is adapted to production thin plate and band.Although solid-liquid casting and roll process carries out coating and coating scaling powder etc. without preheated substrate and to matrix
Surface treatment, but too thick metallic plate can not be produced, clad can not be too thick, and equipment is expensive, disposably puts into huge
Greatly.
The working condition of explosive welding is poor, obtained complex laminate out-of-flatness and production process has certain danger.
Using casting produce double metallic composite material cost is relatively low, bond strength is high between metal, therefore have developed rapidly.Common is double
Metal composite casting method has casting infiltration, inlays casting, double-fluid double metal composite casting method etc..Casting infiltration has very under study for action
Many problems are to be solved, such as slag inclusion, wash away, penetrating power is poor, alloying layer thickness is uneven and scab.The shortcoming of centrifugal casting is technique
Process is cumbersome, and inner layer metal liquid has souring to outer layer during cast, and the clad pipe prepared or the interface of roll are also easy to produce one
A little casting flaws.Continuous casting process production bimetallic plied timber research and application turn into Metal coating investigation of materials field
One of focus, current research direction has：Continuous cast composite casting technique, double crystallizer continuously casting technologies, double fluid cast connect
Continuous foundry engieering, electromagnetic braking continuously casting technology etc..
Continuous cast composite casting is mainly used in the production of composite roll.The shortcoming of the technique is that internal layer need to be located in advance
Reason, if treatment effect is not good enough, or do not cast at once after processing, is then difficult to prepare the roll being well combined.
The Novelis Fusion technologies of Novelis companies can realize big thickness ply-metal.But the technology pair
Metal bath surface highly has strict demand, and liquid level have to be lower than heat-exchanger rig bottom, but again can not be excessive with distance from bottom, therefore needs
It could be realized using advanced liquid surface height controlling system.
The problem of existing solid-liquid complex technique is present includes：Base metal surface oxide-film be must pull against to compound obstruction
Effect, need to could be carried out substrate preheating to enough temperature compound, it is necessary to carry out recombination process under protective atmosphere.Therefore,
Prior art all needs to carry out under gas shield after carrying out matrix surface the processing of a series of complex, coating metal surface cleaning
It is compound；The overlay coating or coating scaling powder of some technologies then after the cleaning；Need to use firing equipment before compound or in recombination process
Parent metal is heated.Add flow, production cycle and the cost of technique.
At present, the development key of composition metal is：The metallurgical binding between metal is realized, meets the premise of bond strength
Under, seek the production method and equipment of simpler, economic and efficient disposal multi-layer and multiple types metal composite.
The content of the invention
It is an object of the invention to provide big thickness bi-metal composite panel of a kind of large area and preparation method thereof, solve
The problem of proposed in background technology.
To solve the above problems, the present invention provides following technical scheme：A kind of big thickness bi-metal composite panel of large area
And preparation method thereof, including matrix and clad, it is characterised in that：The bottom of described matrix is provided with mobile platform, described matrix
In insulation casting mold, the top of the insulation casting mold is provided with clearance type casting ladle, and the inside of the clearance type casting ladle is provided with cladding
Layer molten metal, the left side of the insulation casting mold is provided with spoiler, and the bottom of the insulation casting mold is provided with metal mold.
It is preferred that, the over-heat metal liquid of the clad is casted on the main surface of described matrix, with the shape together with matrix
Into bimetallic plates, the first metal of composition matrix can select aluminium, lead, zinc, copper, iron, cobalt, nickel and its alloy, composition cladding
Second of metal of layer can select aluminium, lead, zinc, copper, iron, cobalt, nickel and its alloy, the composition base of the first and second metal
This is identical or is closely related or different, in when the composition of the first and second of metal it is same or similar, can be based on micro-
Structure and obtain different properties, the bonding mechanism of matrix and clad alloy is combined or/and diffusion bond for fusion, acquisition
The average thickness of bi-metal composite panel matrix melts is controlled within 5mm.
It is preferred that, specific make step is as follows,
A, the plate surface being made up of the first alloy as matrix is handled, so that matrix removes all oxidations
Thing, is carried out by sandblasting or blast cleaning, or using the grinding of wheeled or belt-type grinder or pickling.
B, the matrix after surface treatment is placed in the Qian shaped cast type of an opening being made up of flame-proof thermal insulation material backward, and
Main surface after making matrix processed is upward.
C, the over-heat metal liquid as second of alloy of clad is casted on the main surface of matrix, with base
Body forms described bimetallic plates together；The depth of cavity of flame-proof thermal insulation material casting mold is more than matrix height, the height beyond part
Spend for forming clad alloy thickness degree.
It is preferred that, the casting step of the clad is, the gold of composition needed for the clad is poured into a mould under an overtemperature
Belong to liquid, so as to be heated to matrix, and realized and clad metal in the case where substrate temperature is increased to solidus temperature
Liquid occurs fusion and combined or/and diffusion bond, specific as follows：
S1, set an infundibulate clearance type casting ladle above die cavity, the width of clearance type casting ladle outflow port with
The width of matrix is parallel, one end vertical alignment of outflow port and matrix；
S2, makes molten metal enter die cavity by the jet formed vertically downward and impact the main surface of matrix, molten metal leads to
Outflow port is completely filled with when crossing clearance type casting ladle；
S3, by clearance type casting ladle be poured into the clad molten metal liquid stream of matrix surface after shock surface along surface after
Afterflow is moved, and flow direction is the opening direction of casting mold, and in flow process, the superheat of molten metal is in the way of heat convection
Matrix is passed to, matrix is heated；
S4, the liquid stream that molten metal is formed by clearance type casting ladle was poured into some seconds times after matrix surface starts,
Matrix is static, and matrix starts with certain speed horizontal movement after some seconds, and matrix static some seconds are able to pouring
Base end with casting ladle outflow port vertical alignment is heated to solidus temperature extremely by note initial stage using the superheat of molten metal
Between liquidus temperature, the intensity in this temperature range endobasal-body end is very low, and now thin oxide layer is being wrapped on main surface
Ruptured under the impact force action of coating metal liquid jet, matrix alloy and clad alloy no oxide hinder and temperature all
Reach in the case of at least all reaching more than solidus, it is possible to achieve good metallurgical binding or/and diffusion bond；
S5, when substrate motion to the other end is with casting ladle outflow port vertical alignment, matrix surface has been wrapped by a layer molten metal
Jet is completely inswept, and now with one piece of opening with casting mold height identical spoiler closure casting mold, pouring ladle is continued after closure
Coating metal liquid, is formed with certain thickness clad until casting mold is full of.After layer molten metal solidification to be covered, from casting mold
Bimetallic plates are taken out to be cleared up.
It is preferred that, described matrix does not have oxide on main surface, without applying coating or scaling powder or solvent protection method its not
It is oxidized, it is short to the time interval between casting clad after the ground removal oxide in surface, no more than 2 hours.
It is preferred that, the average thickness of the bi-metal composite panel matrix melts of acquisition is controlled within 5mm, bimetal plate
By certain heat treatment after compound, heat-treatable strengthened Partial Physical Property or/and chemistry in matrix and clad alloy
Performance or/and mechanical property are improved.
It is preferred that, include one kind selected from abrasive jet cleaning, shot-peening the step of basic removal oxide from the main surface of matrix
Cleaning, with the processing method of the grinding of wheeled or belt grinding machine or pickling.
Compared with prior art, beneficial effects of the present invention are as follows：
1. it is applied widely.The present invention do not limited substantially by the area and thickness of required bi-metal composite panel, also not by
Material is limited.The large-sized duplex metal composite board material and its panel-like member product of all size can be produced.Such as it is used for pressure vessel, stone
The stainless steel in the fields such as oiling work, papermaking/bimetal copper-steel composite plate, for thermal power plant, coal yard, cement plant, loading machine, mine
Machinery, building machinery, the general steel plate of metallurgical machinery or heat resisting steel or stainless steel/alloys wear resistant cast iron ply-metal.With
In the titanium or copper/bimetal copper-steel composite plate on naval vessel and copper/Al bimetal composite plate for electrical apparatus industry.
2. production process is easy to control.The bi-metal composite panel of the present invention is implemented by the way of impact jet flow, can be with
Quick heated substrate, effectively removes matrix surface and hinders compound oxide, without carrying out Chemical cleaning and painting to matrix surface
Scaling powder is covered, without gas shield in recombination process.Technique is simple, and semi-automatic and fully-automatic production operation can be achieved.
3. productivity ratio is high.Its recombination velocity of the method for the present invention can work continuously up to 1200mm/min.
4. processing cost is low.Because the running gate system of the present invention is directly contacted with sheet material, the sheet material tailing of formation is few,
Near-net-shape can be achieved, machine-finish allowance is reduced, stock utilization is up to more than 90%, so processing cost is low.
5. properties of product are superior.Using punching in the big thickness bi-metal composite panel recombination process of large area prepared by the present invention
Slap shot stream enhanced heat exchange, thus it is small to the heat input of matrix, and matrix heat affected area width is small, and land is uniform, and bond strength is high,
Clad metal freezing speed is fast, microstructure for tiny equiax crystal or with the subvertical column crystal in land, it is comprehensive
Can be good.
Brief description of the drawings
Fig. 1 is ply-metal schematic diagram of the present invention；
Fig. 2 is the simple production technology schematic diagram of the present invention.
As schemed：1- clads, 2- matrixes, 3- mobile platforms, 4- insulation casting molds, 5- clearance type casting ladles, 6- clad metals
Liquid, 7- spoilers, 8- metal molds.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1-2 is referred to, method of the invention preferentially utilizes features above, and therefore, there is provided one kind according to the present invention
For the method for the bi-metal composite panel for producing the big thickness of large area, wherein, this method comprises the following steps：Will be by the first
The surface for the sheet material (hereinafter referred to as " matrix ") that metal is made is handled, and to remove all oxides substantially, for example may be used
To pass through sandblasting or blast cleaning；Carried out using the grinding of wheeled or belt-type grinder or pickling.Matrix after surface treatment
It is placed in the opening being made up of a flame-proof thermal insulation material Qian shaped cast type backward, and the main surface court after making matrix processed
On.Second of metal (hereinafter referred to as " clad ") is casted on the main surface of matrix, to form institute together with matrix
The bimetallic plates stated；The depth of cavity of flame-proof thermal insulation material casting mold is more than matrix height, and the height beyond part is used to form bag
Coating alloy layer thickness.This method also includes, and before the step of casting clad, the main surface there is no oxide,
Without applying coating or scaling powder or solvent protection method, its is not oxidized；But to casting bag after the ground removal oxide in surface
Time interval between coating is as far as possible short, does not exceed 2 hours, otherwise needs to re-grind main surface.The casting bag
The step of coating is, the molten metal of composition needed for the clad is poured into a mould under an overtemperature, so that matrix is heated, and
Realize that occurring fusion with clad molten metal combines or/and diffusion junctions in the case where substrate temperature is increased to solidus temperature
Close.Meanwhile, the step of completing to cast above-mentioned clad also includes setting an infundibulate clearance type casting ladle above die cavity, seam
The width of gap type casting ladle outflow port is parallel with the width of matrix, one end vertical alignment of outflow port and matrix；Make gold
Category liquid enters die cavity by the jet formed vertically downward and impacts the main surface of matrix, complete when molten metal is by clearance type casting ladle
Outflow port is full of entirely.The clad molten metal liquid stream of matrix surface is poured into after shock surface along surface by clearance type casting ladle
Continue to flow, flow direction is the opening direction of casting mold, and in flow process, the superheat of molten metal is with the side of heat convection
Formula passes to matrix, and matrix is heated.The liquid stream that clad molten metal is formed by clearance type casting ladle is poured into matrix surface and opened
In some seconds times after beginning, matrix is static, and matrix starts with certain speed horizontal movement after some seconds.If matrix is static
The dry second is able to the base end with casting ladle outflow port vertical alignment at cast initial stage using the superheat of molten metal
Solidus temperature is heated to between liquidus temperature, the intensity in this temperature range endobasal-body end is very low, now matrix
Thin oxide layer ruptures under the impact force action of clad molten metal jet on main surface, and matrix alloy exists with clad alloy
There is no oxide obstruction and temperature is all reached in the case of at least all reaching more than solidus, it is possible to achieve good fusion is combined
Or/and diffusion bond.The step of completing to cast above-mentioned clad is also included when substrate motion to the other end and casting ladle outflow port
During vertical alignment, it is completely inswept that matrix surface has been wrapped by layer molten metal jet.Now hindered with one piece with casting mold height identical
The opening that plate blocks casting mold is flowed, continues pouring ladle coating metal liquid after closure, is formed until casting mold is full of with certain thickness
Clad.After layer molten metal solidification to be covered, taking-up bimetallic plates are cleared up from casting mold.After bimetal plate is compound by
Heat-treatable strengthened Partial Physical Property or/and chemical property or/and power in certain heat treatment, matrix and clad alloy
Learning performance is improved.
First, prepare
Matrix material is prepared for 7075-T651 hot rolling aluminium alloy slabs, clad aluminium alloy selects 7075 aluminium alloys, used
Raw material are commercial-purity aluminium, pure magnesium, industrial-purity zinc, cathode copper.Its composition (percentage by weight) scope is：2.1~
2.9Mg, 5.1~6.1Zn, 1.2~2.0Cu, surplus Al.Food ingredient takes the upper limit of each composition.In the semicontinuous casting of impact jet flow
The preparation that aluminium/Al bimetal composite is carried out on device is made, in order to ensure the quality of composite, casting technique is strictly controlled
Parameter, the casting technological parameter that the present embodiment is used is shown in following form.
Main casting technological parameter
Highstrenghtpiston's mould aluminium/Al bimetal composite wood for being well combined can be prepared with reference to the technological parameter of upper table
Material.Its melting zone thickness is in 10mm or so.
2nd, it is heat-treated
Solid solution+Ageing Treatment.470 DEG C of solid solubility temperature, solution time 1h, water quenching, 120 DEG C of aging temp, aging time 2 is small
When.After Overheating Treatment, the 98HB of the Brinell hardness of aluminum matrix alloy 7075-T651 sides after compound is promoted to 150HB,
The hardness of original 7075-T651 aluminum alloy plate materials has been returned to, 80HB of the hardness of the side of aluminium alloy 7075 after being combined is coated
It is promoted to 130HB.Therefore, highstrenghtpiston's mould that prepared by method of the invention is being kept with aluminium/Al bimetal composite
Its thickness is added on the basis of former 7075-T651 aluminium alloy thick plates hardness, the design and processing for plastic mould are provided more
Big space.
Operation principle：It should be noted that the present invention can produce all size large-sized duplex metal composite board material and its
Panel-like member product, production range is wide, and production process is easy to control, and production cost is low, efficiency high and properties of product are superior.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention,
Although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., should be included in the present invention's
Within protection domain.
Claims (7)
1. a kind of big thickness bi-metal composite panel of large area and preparation method thereof, including matrix (2) and clad (1), it is special
Levy and be：The bottom of described matrix (2) is provided with mobile platform (3), and described matrix (2) is in insulation casting mold (4), the insulation
The top of casting mold (4) is provided with clearance type casting ladle (5), and the inside of the clearance type casting ladle (5) is provided with clad molten metal (6), institute
The left side for stating insulation casting mold (4) is provided with spoiler (7), and the bottom of the insulation casting mold (7) is provided with metal mold (8).
2. big thickness bi-metal composite panel of a kind of large area according to claim 1 and preparation method thereof, its feature exists
In：The over-heat metal liquid of the clad is casted on the main surface of described matrix, to form bimetallic plates, group together with matrix
The first metal into matrix can select aluminium, lead, zinc, copper, iron, cobalt, nickel and its alloy, constitute second of metal of clad
Aluminium, lead, zinc, copper, iron, cobalt, nickel and its alloy can be selected, the composition of the first and second of metal is essentially identical or close phase
Close or different, in when the composition of the first and second of metal it is same or similar, difference can be obtained based on microstructure
Property, the bonding mechanism of matrix and clad alloy combines or/and diffusion bond for fusion, the bi-metal composite panel of acquisition
The average thickness of matrix melts is controlled within 5mm.
3. big thickness bi-metal composite panel of a kind of large area according to claim 1 and preparation method thereof, its feature exists
In：Specific make step is as follows,
A, the plate surface being made up of the first alloy as matrix is handled, so that matrix removes all oxides,
Carried out by sandblasting or blast cleaning, or using the grinding of wheeled or belt-type grinder or pickling.
B, the matrix after surface treatment is placed in the Qian shaped cast type of an opening being made up of flame-proof thermal insulation material backward, and makes base
Main surface after body is processed is upward.
C, the over-heat metal liquid as second of alloy of clad is casted on the main surface of matrix, with matrix one
Play the bimetallic plates described in formation；The depth of cavity of flame-proof thermal insulation material casting mold is more than matrix height, and the height beyond part is used
In formation clad alloy thickness degree.
4. big thickness bi-metal composite panel of a kind of large area according to claim 1 and preparation method thereof, its feature exists
In：The casting step of the clad is, the molten metal of composition needed for the clad is poured into a mould under an overtemperature, so as to base
Body is heated, and abolishes matrix table using the impulsive force of molten metal stream in the case where substrate temperature is increased to solidus temperature
The oxide-film in face, realizes that matrix occurs fusion with clad molten metal and combined or/and diffusion bond, specific as follows：
S1, sets an infundibulate clearance type casting ladle above die cavity, the width and matrix of clearance type casting ladle outflow port
Width it is parallel, one end vertical alignment of outflow port and matrix；
S2, makes molten metal enter die cavity by the jet formed vertically downward and impact the main surface of matrix, molten metal passes through seam
Outflow port is completely filled with during gap type casting ladle；
S3, the clad molten metal liquid stream for being poured into matrix surface by clearance type casting ladle continues to flow after shock surface along surface
Dynamic, flow direction is the opening direction of casting mold, and in flow process, the superheat of molten metal is transmitted in the way of heat convection
To matrix, matrix is heated；
S4, the liquid stream that molten metal is formed by clearance type casting ladle was poured into some seconds times after matrix surface starts, matrix
It is static, matrix starts with certain speed horizontal movement after some seconds, matrix static some seconds are able in cast just
Base end with casting ladle outflow port vertical alignment is heated to solidus temperature to liquid phase by the phase using the superheat of molten metal
Between line temperature, the intensity in this temperature range endobasal-body end is very low, now on main surface thin oxide layer in clad
Ruptured under the impact force action of molten metal jet, matrix alloy and clad alloy is hindered in no oxide and temperature all reaches
In the case of at least all reaching more than solidus, it is possible to achieve good metallurgical binding or/and diffusion bond；
S5, when matrix horizontal movement to the other end is with casting ladle outflow port vertical alignment, matrix surface has been wrapped by a layer molten metal
Jet is completely inswept, and now with one piece of opening with casting mold height identical spoiler closure casting mold, pouring ladle is continued after closure
Coating metal liquid, is formed with certain thickness clad, after layer molten metal solidification to be covered, from casting mold until casting mold is full of
Bimetallic plates are taken out to be cleared up.
5. big thickness bi-metal composite panel of a kind of large area according to claim 1 and preparation method thereof, its feature exists
In：Described matrix does not have oxide on main surface, and without applying coating or scaling powder or solvent protection method, its is not oxidized, from surface
It is short to the time interval between casting clad after ground removal oxide, no more than 2 hours.
6. big thickness bi-metal composite panel of a kind of large area according to claim 1 and preparation method thereof, its feature exists
In：The average thickness of the bi-metal composite panel matrix melts of acquisition is controlled within 5mm, by one after bimetal plate is compound
Heat-treatable strengthened Partial Physical Property or/and chemical property or/and mechanics in fixed heat treatment, matrix and clad alloy
Performance is improved.
7. big thickness bi-metal composite panel of a kind of large area according to claim 1 and preparation method thereof, its feature exists
In：From the main surface of matrix it is basic include the step of remove oxide it is a kind of be selected from abrasive jet cleaning, blast cleaning, with wheeled or
Belt grinding machine grinding or the processing method of pickling.
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