CN104588662B - Flexible multi-hole metal foil and manufacturing method thereof - Google Patents
Flexible multi-hole metal foil and manufacturing method thereof Download PDFInfo
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- CN104588662B CN104588662B CN201410609038.9A CN201410609038A CN104588662B CN 104588662 B CN104588662 B CN 104588662B CN 201410609038 A CN201410609038 A CN 201410609038A CN 104588662 B CN104588662 B CN 104588662B
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Abstract
Then invention discloses flexible multi-hole metal foil with excellent properties and a manufacturing method of the flexible multi-hole metal foil. The flexible multi-hole metal foil is a sheet made of metal multi-hole materials which regard solid solution alloy as a matrix phase, the thickness of the sheet is 5-200Mum, the average hole diameter of the sheet is 0.05-100Mum, the porosity of the sheet is 15-70%. The manufacturing method of the flexible multi-hole metal foil comprises the steps that (1) a carrier is prepared, and the carrier is foil made from an element or multiple elements from which the metal multi-hole materials of the flexible multi-hole metal foil are made; (2) raw material powder made from the other elements of the metal multi-hole materials is configured to be viscous turbid liquid by using a dispersing agent and an adhesion agent; (3) the turbid liquid is adhered to the surface of the carrier and then drying is performed to form a diaphragm adhering to the surface of the carrier; (4) the carrier to which the diaphragm is adhered is put into a sintering tool which is consistent with the shape of the carrier and then constraint sintering is performed, and the flexible multi-hole metal foil is taken out from the sintering tool and obtained after sintering.
Description
Technical field
The present invention relates to sintering diamond bit and its preparation are and in particular to a kind of flexible, porous metal forming and its preparation
Method.
Background technology
Sintering diamond bit be mainly used as filtering material.Need in concrete application to make sintering diamond bit
Definite shape and the filter element of construction.Existing sintering diamond bit filter element is substantially all as cast or template knot
Structure.Their preparation principle is similar to, that is, substantially：First pass through special mould and will constitute the former of this metal polyporous material
Feed powder is pressed into the pressed compact (typically adopting equal pressing forming technology) of cast or template, then pressed compact is sintered, sintering again
After obtain product.
The sintering diamond bit filter element of above-mentioned cast or template is due to by its shape, construction and subsidiary
The impact to defecator and the corresponding requirements of system, limited by range.But present inventor notice due to
Sintering diamond bit filter element chemical erosion repellence, material irreversible membrane fouling repellence, the side such as mechanical strength
Current filter element (such as organic filter film) is compared on face there is higher advantage, therefore, develop in multiple fields
It is capable of the novel sintered metal polyporous material filter element of the original filter element of corresponding substitute highly significant.
On above-mentioned background elementary, applicant is initiative to be proposed to develop a kind of flexible, porous metal forming.That is, by metal porous
Material is constituted the even foldable thin slice of comparable free bending.
Paper " Chinese material is in progress, volume 29 for the progress of Ti-Al intermetallic compound porous material, river etc.,
In the 2.3rd of 3rd phase, in March, 2010 ", section describes a kind of preparation technology of Ti-Al intermetallic compound paper mold film.Due to upper
State paper mold film to be made up of Ti-Al intermetallic compound, be therefore a kind of rigid material.
Content of the invention
The technical problem to be solved is to provide two kinds of flexible, porous metal formings and this flexible, porous gold respectively
Belong to the preparation method of paper tinsel.Its secondary offer of the present invention can be used for masking frock and the film of above-mentioned flexible, porous metal forming preparation method
Piece sinters frock, so that flexible, porous metal forming is more easily manufactured, and product quality also can get more preferable guarantee.
Certainly, for above-mentioned masking frock and diaphragm sintering frock, its targeted " film " can only be not the present invention
Flexible, porous metal forming preparation method in obtained " film ".Such as, described diaphragm sintering frock can be to be used for the back of the body
" the paper mold film " that refer in scape technology is sintered.
The present invention the first flexible, porous metal forming to be provided, is by the gold of solid solution alloy, face-centred cubic structure
The thin slice that the metal simple-substance of genus simple substance or body-centered cubic structure is constituted by the metal polyporous material of matrix phase, the thickness of this thin slice
For 5～200 μm, average pore size be 0.05～100 μm, porosity be 15～70%, and by a homogenizing diaphragm sintering form.
Specifically, this flexible, porous metal forming is by the metal list of solid solution alloy, face-centred cubic structure first on material composition
The metal simple-substance of matter or body-centered cubic structure is that the metal of matrix phase is constituted, thus ensure the flexibility of this flexible, porous metal forming with
And can be produced out by the following corresponding preparation method of the present invention.Secondly, constitute the metal material of this flexible, porous metal forming
Material should be porous material, and its Pore Characterization is 0.05～100 μm for average pore size, and porosity is 15～70%, so, soft
Property multicellular metal foil can meet extensive filtration separation and require.In addition, the thickness of flexible, porous metal forming (thin slice) is 5～200 μ
M, generally 10～60 μm.Importantly, this flexible, porous metal forming is formed by the diaphragm sintering of a homogenizing.So-called " equal
Matter " represents that the composition of diaphragm is generally uniform, is substantially different from background technology " the intermetallic compound porous material of Ti-Al
Material progress " in refer to have passed through aluminum coated steel after, be synthesized before aluminium foil.After aluminum coated steel, be synthesized before
Aluminium foil can be regarded as a kind of thin slice of asymmetric form.And the implication of " asymmetric " is logical in sintering diamond bit field
?." homogenizing " in the present invention is to be proposed to distinguish concept with respect to " asymmetric ".Flexible, porous gold due to the present invention
Belong to paper tinsel to be formed by the diaphragm sintering of a homogenizing, therefore the pore-size distribution of this paillon foil evenly, paillon foil flatness etc. more preferably.
Described thin slice can be made up of by the metal polyporous material of matrix phase unlimited solid solution alloy.For example, described thin
Piece by Ag-Au solid solution, Ti-Zr solid solution, Mg-Cd solid solution or Fe-Cr solid solution for matrix phase metal polyporous material institute
Constitute.Again for example, described thin slice is preferably made up of Ni-Cu solid solution metal polyporous material, at this moment may call for this porous material
Numerous holes in have more than 75% aperture difference in the range of less than 70 μm.In addition, Ni-Cu solid solution metal polyporous material exists
The aspect such as flexible (can repeatedly folding) and chemical stability is all more satisfactory, and on the permeability of porous material sintering formation
Also very excellent, therefore range of application is relatively extensive.
Described thin slice can also be made up of by the metal polyporous material of matrix phase limit solid solution alloy.For example, described
Thin slice is made up of by the metal polyporous material of matrix phase Cu-Al solid solution, Cu-Zn solid solution, Fe-C-Cr solid solution.Described
Thin slice can also be made up of by the metal polyporous material of matrix phase Al, Ni, Cu or Pb of face-centred cubic structure.Described thin slice is also
Can be made up of by the metal polyporous material of matrix phase Cr, W, V or Mo of body-centered cubic structure.
The above-mentioned flexible, porous metal forming of the present invention has wide application space, for example：Industrially, can be used for weaving
With the waste heat recovery in leather industry, medicament recovery, Environmental capacity, the purification in food-processing industry, concentration, sterilization, by-product
Product reclaim, the artificial trachea in medicine and healthcare industry, control release, blood filtration, Water warfare, the filtering in auto industry
Device；Can be used as the curtain material of the dust-filtering material of mask and static electrification dedusting function on civilian.
The step of the preparation method of the present invention above-mentioned flexible, porous metal forming includes：(1) its metal polyporous material will be constituted
Raw material powder dispersant and binding agent be configured to thick suspension；(2) described suspension is injected the one-tenth of masking frock
Pattern intracavity simultaneously is allowed to dry the diaphragm forming a homogenizing；(3) described diaphragm is loaded the agglomerant coincideing with this diaphragm profile
Then enter row constraint sintering in dress, take out in sintering frock after sintering and obtain flexible, porous metal forming.
In said method, such as flexible, porous metal forming is made up of the metal polyporous material of Ni-Cu solid solution, in order to prepare height
The Ni-Cu flexible, porous metal forming of performance, then, in step (1), be first uniformly mixed to form raw material powder by Ni powder and Cu powder, wherein
Cu silty amount is the 30～60% of raw material silty amount, then with ethanol as dispersant, with PVB as binding agent, by PVB and ethanol
Mass ratio is (0.5～5):100 ratio adds PVB in ethanol makes PVB solution, hereafter presses in every 100ml ethanol again and adds
The ratio entering raw material powder 20～50g adds raw material powder in PVB solution, makes raw material powder fully dispersed uniformly by stirring, obtains
Thick suspension；In step (3), sintering process include by sintering temperature be gradually increased to 520～580 DEG C and be incubated 60～
First sintering stage of 180min and in the first stage after be directly warming up to 1130～1180 with the heating rate of >=5 DEG C/min
DEG C and be incubated second sintering stage of 120～300min.
Can be used for the masking frock of said method, including：Fixed part, described fixed part is included for molding diaphragm edge
Framed；Adjustment portion, described adjustment portion includes and the framed template coordinating for molding diaphragm bottom surface, and described template is connected with can be made
The adjusting means of this template movement on framed depth direction；Movable part, described movable part include positioned at framed top surface and
The scraper that cutting edge is flushed with the holding of framed top surface in the course of the work.This masking frock can more accurately control the thickness of diaphragm
Degree, and ensure the uniformity of diaphragm thickness and the flatness of membrane surface.
As a kind of specific embodiment of described adjusting means, adjusting means include with framed be relatively fixed and respectively with
The height adjustment mechanism that template bottom surface corner connects and works independently.So can respectively the corner of template be highly adjusted,
Ensure the overall depth of parallelism with framed top surface of template, the thickness of diaphragm is uniformly higher.
In addition, being also further provided with volatilizable at 580 DEG C in the forming surface of described framed forming surface and template
Lubricant coating.Wherein, lubricant coating can specifically adopt vaseline coating.In this way, it is possible to the diaphragm of guarantee molding is suitable
Profit is taken out from masking frock, prevents sticking to mould, simultaneously because the volatile of lubricant coating, the flexible, porous to follow-up preparation
The composition of metal forming does not impact, and is conducive on the contrary improving the porosity of flexible, porous metal forming.
Can be used for the diaphragm sintering frock of said method, including the upper die and lower die being made up of exotic material and side mould,
Described upper die and lower die are coordinated thus forming the die cavity for being matched with internal diaphragm with side mould respectively；Described die cavity connects
There is the exhaust structure for distributing sintering volatile matter, described exhaust structure is in the cooperation reserved with the matching part of side mould of upper mould
Gap and/or lower mould with while mould matching part reserve fit clearance and/or upper die and lower die and while mould
At least one of upper set pore.Row constraint sintering can be entered by this sintering frock to diaphragm, prevent the burning of diaphragm
Deform in knot.
As a kind of preferred concrete structure of upper die and lower die and side mould, described side mould is a mask, upper die and lower die
It is respectively clamping plate, at least triple laminate is installed in described mask, between two laminated planks of arbitrary neighborhood, form described die cavity.
This makes it possible to realize multiple diaphragms sinter, both improve production efficiencies simultaneously, also can ensure to sinter concordance simultaneously.
In addition, the surface being used for being contacted on described upper die and lower die and side mould with diaphragm is also further provided with oxidation
Aluminized coating.The element that aluminium oxide can intercept between sintering frock own material and diaphragm material in high-temperature sintering process is mutual
Diffusion.
In described upper die and lower die and side mould, at least one can be made up of graphite.Graphite has good resistance to elevated temperatures, and
Because graphite surface is smooth, the demoulding of product after also being easy to sinter.
The flexible, porous metal forming of second provided by the present invention, be by solid solution alloy for matrix phase metal porous material
Expect constituted thin slice, the thickness of this thin slice is 5～200 μm, average pore size is 0.05～100 μm, and porosity is 15～70%.
Specifically, this flexible, porous metal forming is to be made up of for the metal of matrix phase solid solution alloy on material composition, thus protecting
Demonstrate,prove the flexibility of this flexible, porous metal forming.Secondly, the metal material constituting this flexible, porous metal forming is porous material, its hole
Structural characterization is 0.05～100 μm for average pore size, and porosity is 15～70%, and so, flexible, porous metal forming can meet extensively
General filtration separation requires.In addition, the thickness of flexible, porous metal forming (thin slice) is 5～200 μm, generally 10～60 μm.
Described thin slice can be made up of by the metal polyporous material of matrix phase unlimited solid solution alloy.For example, described thin
Piece by Ag-Au solid solution, Ti-Zr solid solution, Mg-Cd solid solution or Fe-Cr solid solution for matrix phase metal polyporous material institute
Constitute.Again for example, described thin slice is preferably made up of Ni-Cu solid solution metal polyporous material, the metal porous material of Ni-Cu solid solution
Material is all more satisfactory at the aspect such as flexible (can repeatedly folding) and chemical stability, and therefore range of application is relatively extensive.
Described thin slice can also be made up of by the metal polyporous material of matrix phase limit solid solution alloy.For example, described
Thin slice is made up of by the metal polyporous material of matrix phase Cu-Al solid solution, Cu-Zn solid solution, Fe-C-Cr solid solution.
The above-mentioned second flexible, porous metal forming of the present invention industrially can be used for weaving and the waste heat in leather industry
Reclaim, medicament reclaims, Environmental capacity, the purification in food-processing industry, concentration, sterilization, side-product reclaim, medical and health care row
Artificial trachea in industry, control release, blood filtration, Water warfare, the cleaner in auto industry；Can be used as mask on civilian
Dust-filtering material and static electrification dedusting function curtain material.
The preparation method of second flexible, porous metal forming of the present invention, step includes：(1) prepare carrier, carrier is by constituting
The paillon foil that a certain element in the metal polyporous material of flexible, porous metal forming or several element are constituted；(2) by composition metal
The raw material powder dispersant that remaining element of porous material is made and binding agent are configured to thick suspension；(3) will be described
Suspension is attached to carrier surface and is allowed to dry the diaphragm that formation is attached on carrier surface；(4) by the carrier of attachment diaphragm
Load in the sintering frock coincideing with its profile and then enter row constraint sintering, take out in sintering frock after sintering and obtain flexibility
Multicellular metal foil.
Can be used for the masking frock of the preparation method of above-mentioned second flexible, porous metal forming, it includes：Fixed part, described
Fixed part includes framed for molding diaphragm edge；Adjustment portion, described adjustment portion includes coordinating for placing carrier with framed
Template, described template is connected with the adjusting means that can make the movement on framed depth direction of this template；Movable part, described work
The scraper that dynamic portion includes positioned at framed top surface and cutting edge is flushed with the holding of framed top surface in the course of the work.This masking frock energy
The enough thickness more accurately controlling diaphragm, and ensure the uniformity of diaphragm thickness and the flatness of membrane surface.
As a kind of specific embodiment of described adjusting means, adjusting means include with framed be relatively fixed and respectively with
The height adjustment mechanism that template bottom surface corner connects and works independently.So can respectively the corner of template be highly adjusted,
Ensure the overall depth of parallelism with framed top surface of template, the thickness of diaphragm is uniformly higher.
Can be used for the sintering frock of the preparation method of above-mentioned second flexible, porous metal forming, including by exotic material system
The upper die and lower die becoming and side mould, described upper die and lower die are coordinated thus forming the carrier phase for adhering to diaphragm with side mould respectively
Identical die cavity；Described die cavity be connected with for distribute sintering volatile matter exhaust structure, described exhaust structure be upper mould with
While mould matching part reserve fit clearance and/or lower mould with while mould matching part reserve fit clearance with
And/or the pore that person is set at least one of upper die and lower die and side mould.Can be to attachment by this sintering frock
The carrier of diaphragm enters row constraint sintering, prevents it from deforming in sintering.
As a kind of preferred concrete structure of upper die and lower die and side mould, described side mould is a mask, upper die and lower die
It is respectively clamping plate, at least triple laminate is installed in described mask, between two laminated planks of arbitrary neighborhood, form described die cavity.
This makes it possible to realize sintering while multiple attachment film carrier, both improve production efficiencies, also can ensure that sintering is consistent simultaneously
Property.
In addition, the surface being used on upper die and lower die and side mould contacting with diaphragm is also further provided with being applied with aluminium oxide
Layer.Aluminium oxide can intercept sintering frock own material and the element phase between carrier and diaphragm material in high-temperature sintering process
Counterdiffusion.
In described upper die and lower die and side mould, at least one is made up of graphite.Graphite has good resistance to elevated temperatures, and by
Smooth in graphite surface, the demoulding of product after also being easy to sinter.
It may be noted that the masking frock that used of the preparation method of above-mentioned second flexible, porous metal forming and agglomerant
Masking frock that dress and the preparation method of the first flexible, porous metal forming above-mentioned are used and sinter permissible on tool structure
Identical.Difference is, the masking frock of second method need to place carrier in template when using, and first method
Carrier is not placed when masking frock uses on template；Attachment diaphragm is placed in its die cavity of sintering frock of second method
Carrier (being unsymmetric structure), and the diaphragm of homogenizing in its die cavity of sintering frock of first method, is placed.
The present invention will be further described with reference to the accompanying drawings and detailed description.Aspect and advantage that the present invention adds
To be set forth in part in the description, partly will become apparent from the description below, or be understood by the practice of the present invention
Arrive.
Brief description
Fig. 1 is the appearance schematic diagram of one of specific embodiment of the invention rectangular flexible multicellular metal foil.
Fig. 2 is the perspective view of the masking frock preparing the flexible, porous metal forming shown in Fig. 1.
Fig. 3 is for I-I in Fig. 2 to sectional view.
Fig. 4 is the structural representation of the diaphragm sintering frock preparing the flexible, porous metal forming shown in Fig. 1.
Fig. 5 is for II-II in Fig. 4 to sectional view.
Specific embodiment
A kind of flexible, porous metal forming 100 as shown in Figure 1, is by the metal list of solid solution alloy, face-centred cubic structure
The thin slice that the metal simple-substance of matter or body-centered cubic structure is constituted by the metal polyporous material of matrix phase, the thickness H of this thin slice is 5
～200 μm, average pore size be 0.05～100 μm, porosity be 15～70%, and by a homogenizing diaphragm sintering form.Its
In, the shape of thin slice can be other flat shapes such as the rectangle shown in Fig. 1 or circle, ellipse.
The step of the preparation method of this flexible, porous metal forming 100 includes：(1) raw material of its metal polyporous material will be constituted
Powder dispersant and binding agent are configured to thick suspension；(2) described suspension is injected the shaping mold cavity of masking frock
Diaphragm that is interior and being allowed to drying formation one homogenizing；(3) described diaphragm is loaded in the sintering frock being coincide with this diaphragm profile so
Laggard row constraint sintering, takes out in sintering frock after sintering and obtains flexible, porous metal forming 100.
In said method, dispersant can using the surface tension such as ethanol, butanone, toluene little and volatilize soon easily be dried
Organic solvent；Binding agent can use PVB, PVA, PVC, polyvinyl alcohol, Polyethylene Glycol (low molecule wax class), paraffin, fatty acid
Class, aliphatic amide type and esters etc..
In said method, the ratio between raw material powder and dispersant can be according to the concrete composition of raw material powder to ensure after drying
The surface quality of diaphragm to determine for principle.If in general, the too high levels of raw material powder, drying the surface quality of rear film
Bad, the phenomenons such as cracking easily occur；If the content of raw material powder is too low, can increase and subsequently described suspension be injected masking work
The number of times of dress shaping mold cavity, extends the manufacturing cycle of flexible, porous metal forming.
In said method, the ratio between binding agent and dispersant can be according to the concrete composition of raw material powder to ensure after drying
The surface quality of diaphragm and membrane ruggedness to determine for principle.If in general, binder content is too high, suspension mobility
Difference, easily has the defects such as shrinkage cavity after drying, and after sintering, the demoulding is difficult；If binder content is too low, the powder particle of raw material powder
Between can not effective bonding, diaphragm insufficient formability, membrane ruggedness are low and take out difficult.
In said method, constraint sintering refers to sinter by the premise of sintering frock holding diaphragm shapes, prevents diaphragm
Sintering process deforms.Specific sintering schedule should be according to the concrete composition of raw material powder and pore structure to be reached
To determine.
Can be using masking frock as shown in figures 2-3 in the step 2 of said method.Specifically, this masking frock includes
Fixed part 210, described fixed part 210 includes framed 211 for molding diaphragm edge, and this framed 211 is arranged on a support bottom
To be supported (certainly framed 211 also can be fixed) by other modes to framed 211 on seat 212；Adjustment portion 220, described
Adjustment portion 220 includes coordinating template 221 for molding diaphragm bottom surface with framed 211, and described template 221 is connected with and can make this mould
The adjusting means 222 of plate 221 movement on framed 211 depth direction；And movable part 230, described movable part 230 includes position
The scraper 231 that in framed 211 top surfaces and in the course of the work cutting edge is flushed with framed 211 top surfaces holdings.When flexible, porous gold
When the shape of genus paper tinsel 100 is the rectangle shown in Fig. 1, framed 211 inner chamber is also a rectangle, and template 221 is located at this interior intracavity simultaneously
With rectangular inner cavity cooperation.In addition, adjusting means 222 specifically may include be relatively fixed with framed 211 and respectively with template 221 bottom surface
The height adjustment mechanism 222a that corner connects and works independently (is for example located at spiral lifting below template 221 bottom surface corner respectively
Mechanism).For ease of the installation of height adjustment mechanism 222a, framed 211 bottom is additionally provided with supporting construction 211a extending internally,
Described height adjustment mechanism 222a is arranged in supporting construction 211a.
The using method of above-mentioned masking frock is：First pass through regulation each height adjustment mechanism 222a to adjust template 221
To set height on and with framed 211 top surface keeping parallelisms, then again in framed 211 forming surface and the one-tenth of template 221
One layer of vaseline coating is respectively provided with type face (first template 221 can be adjusted to template 221 top surface and be less than framed 211 top surfaces
20 μm of position, then fills vaseline in framed 211 die cavitys constituting with template 221, then moves scraper 231 and is moving
Ensure when dynamic that its cutting edge is flushed with framed 211 top surfaces, thus will be attached to the vaseline of more than framed 211 top surfaces with scraper 231
Scrape off, finally template 221 is accordingly declined by the design thickness further according to diaphragm), the suspension obtained by step (1) is injected into
By in framed 211 shaping mold cavities constituting with template 221, hereafter move scraper 231 and ensure when mobile its cutting edge with framed
211 top surfaces flush, thus being scraped off with the suspension that scraper 231 will be attached to more than framed 211 top surfaces, then suspension are carried out
Dry, after drying, suspension is frozen into diaphragm in uniform thickness, finally takes off diaphragm from masking frock.Above-mentioned masking
Frock can accurately control the thickness of diaphragm, and ensures the uniformity of diaphragm thickness and the flatness of membrane surface.
Can be using diaphragm sintering frock as shown in Figures 4 and 5 in the step 3 of said method.Specifically, this diaphragm sintering
Frock includes upper mould 310a, lower mould 310b and the side mould 320 being made up of graphite, described upper mould 310a, lower mould 310b respectively with
Side mould 320 is coordinated thus forming the die cavity for being matched with internal diaphragm 100 '；Wherein, side mould 320 is specially a mask
321, upper mould 310a and lower mould 310b are respectively clamping plate 310, are provided with multiply-plywood 310 in described mask 321, arbitrary neighborhood
Form described die cavity between two laminated planks 310；In addition, each clamping plate 310 is also reserved with for dissipating with the matching part of mask 321
The fit clearance of fever knot volatile matter.When the rectangle that the shape of flexible, porous metal forming 100 is shown in Fig. 1, described mask 321
Sidepiece be the rectangular configuration being made up of header board 321a, back plate 321b, left plate 321c and right panel 321d.
The using method that above-mentioned diaphragm sinters frock is：First on the inwall of mask 321 and the two side of each clamping plate 310
One layer of aluminum oxide coating layer of setting (first can be mixedly configured into sticky alumina powder suspension solution with ethanol, PVB and alumina powder,
Then it is coated to formation aluminum oxide coating layer on the inwall of mask 321 and the two side of each clamping plate 310 changing aluminium powder suspension),
Then lay bottom clamping plate 310 in the bottom of mask 321, above this clamping plate 310, place a diaphragm 100 ', then in this diaphragm
The second laminated plank 310 is laid in 100 ' top, the like can lay whole clamping plate 310, and ensure in arbitrary neighborhood
Two laminated planks 310 between respectively accompany one piece of diaphragm 100 ', hereafter by the diaphragm assembling sintering frock send into sintering furnace in enter
Row sintering, takes out flexible, porous metal forming 100 after sintering from diaphragm sintering frock.Therefore, above-mentioned diaphragm sintering frock is realized
Multiple diaphragms 100 ' constrain sintering, both improve production efficiencies simultaneously, also can ensure to sinter concordance simultaneously.
Another kind of flexible, porous metal forming of the present invention, be by solid solution alloy for matrix phase metal polyporous material institute structure
The thin slice becoming, the thickness H of this thin slice is 5～200 μm, average pore size is 0.05～100 μm, and porosity is 15～70%.Wherein,
The shape of thin slice can be with other flat shapes such as rectangle or circle, ellipse.
The step of the preparation method of second flexible, porous metal forming includes：(1) prepare carrier, described carrier is by constituting
The paillon foil that a certain element in the metal polyporous material of flexible, porous metal forming or several element are constituted；(2) by composition metal
The raw material powder dispersant that remaining element of porous material is made and binding agent are configured to thick suspension；(3) will be described
Suspension is attached to carrier surface and is allowed to dry the diaphragm that formation is attached on carrier surface；(4) by the carrier of attachment diaphragm
Load in the sintering frock coincideing with its profile and then enter row constraint sintering, take out in sintering frock after sintering and obtain flexibility
Multicellular metal foil.
In said method, dispersant can using the surface tension such as ethanol, butanone, toluene little and volatilize soon easily be dried
Organic solvent；Binding agent can use PVB, PVA, PVC, polyvinyl alcohol, Polyethylene Glycol (low molecule wax class), paraffin, fatty acid
Class, aliphatic amide type and esters etc..
In said method, the ratio between raw material powder and dispersant can be according to the concrete composition of raw material powder to ensure after drying
The surface quality of diaphragm to determine for principle.If in general, the too high levels of raw material powder, drying the surface quality of rear film
Bad, the phenomenons such as cracking easily occur；If the content of raw material powder is too low, can increase and subsequently described suspension be injected masking work
The number of times of dress shaping mold cavity, extends the manufacturing cycle of flexible, porous metal forming.
In said method, the ratio between binding agent and dispersant can be according to the concrete composition of raw material powder to ensure after drying
The surface quality of diaphragm and membrane ruggedness to determine for principle.If in general, binder content is too high, suspension mobility
Difference, easily has the defects such as shrinkage cavity after drying, and after sintering, the demoulding is difficult；If binder content is too low, the powder particle of raw material powder
Between can not effective bonding, diaphragm insufficient formability, membrane ruggedness are low and take out difficult.
In said method, constraint sintering refers to sinter by the premise of sintering frock holding diaphragm shapes, prevents diaphragm
Sintering process deforms.Specific sintering schedule should be according to the concrete composition of raw material powder and pore structure to be reached
To determine.
In the step 3 of said method can with using spraying etc. mode be attached to carrier surface, but suggestion using above-mentioned Fig. 2～
Described suspension is attached to carrier surface by the masking frock shown in 3.Concrete grammar is：First pass through each altitude mixture control machine of regulation
Structure 222a by template 221 be adjusted to set height on and with framed 211 top surface keeping parallelisms, then put in template 221 again
Put carrier, and the suspension obtained by step (2) is injected into by the shaping mold cavity between framed 211 and carrier, hereafter move
Dynamic scraper 231 simultaneously ensures that its cutting edge is flushed with framed 211 top surfaces when mobile, thus will be attached to framed 211 tops with scraper 231
Suspension more than face scrapes off, then suspension is dried, and after drying, suspension is frozen into diaphragm in uniform thickness, finally will
The carrier of attachment diaphragm takes off from masking frock.
The same diaphragm sintering frock using as shown in Figures 4 and 5 in the step 4 of said method.
Embodiment 1
Flexible, porous metal forming 100 is the rectangular tab being made up of Ni-Cu solid solution alloy porous material, this sheet thickness
H is 10 μm, and length is 160mm, and width is 125mm, and average pore size is 18.4 μm, and porosity is 58.37%.This flexible, porous gold
Belong to paper tinsel 100 preparation method be：First, Ni powder and Cu powder are uniformly mixed to form raw material powder, wherein Cu silty amount is raw material powder
The 30% of quality, then with ethanol as dispersant, with PVB as binding agent, be 2.5 by the mass ratio of PVB and ethanol:100 ratio
PVB is added in ethanol and make PVB solution by example, hereafter presses the ratio of addition raw material powder 25g in every 100ml ethanol again by raw material powder
Add in PVB solution, make raw material powder fully dispersed uniformly by stirring, obtain thick suspension；Secondly, will be described suspended
The shaping mold cavity of liquid injection masking frock as shown in figures 2-3 is interior and is allowed to dry the diaphragm 100 ' forming a homogenizing；Then,
The diaphragm that described diaphragm 100 ' is loaded as shown in Figures 4 and 5 sinters frock, and specific sintering process is first by sintering temperature gradually
Rise to 550 DEG C and be incubated 90min (Main Function of this process is to remove binding agent, vaseline etc.), then with 6 DEG C/min's
Heating rate is directly warming up to 1130 DEG C and is incubated 180min and (is rapidly heated to 1170 DEG C of fusing points more than Cu, available Cu melts
Mobility after melting drives Ni powder, so that Ni powder is fully combined it is ensured that integrity after flexible, porous metal forming 100 sintering and soft
Property), take out in sintering frock after sintering and obtain flexible, porous metal forming 100.
Embodiment 2
Flexible, porous metal forming 100 is the rectangular tab being made up of Ni-Cu solid solution alloy porous material, this sheet thickness
H is 100 μm, and length is 200mm, and width is 130mm, and average pore size is 30 μm, and porosity is 61.68%.This flexible, porous gold
Belong to paper tinsel 100 preparation method be：First, Ni powder and Cu powder are uniformly mixed to form raw material powder, wherein Cu silty amount is raw material powder
The 60% of quality, then with ethanol as dispersant, with PVB as binding agent, be 4 by the mass ratio of PVB and ethanol:100 ratio
PVB is added in ethanol and makes PVB solution, hereafter in the ratio of addition raw material powder 40g in every 100ml ethanol, raw material powder is added again
Enter in PVB solution, make raw material powder fully dispersed uniformly by stirring, obtain thick suspension；Secondly, by described suspension
The shaping mold cavity of injection masking frock as shown in figures 2-3 is interior and is allowed to dry the diaphragm 100 ' forming a homogenizing；Then, will
Described diaphragm 100 ' loads diaphragm sintering frock as shown in Figures 4 and 5, and specific sintering process is first gradually to rise sintering temperature
To 550 DEG C and be incubated 90min, then directly it is warming up to 1180 DEG C with the heating rate of 8 DEG C/min and is incubated 180min, after sintering
Take out in sintering frock and obtain flexible, porous metal forming 100.
Embodiment 3
Flexible, porous metal forming is the rectangular tab being made up of Ni-Cu solid solution alloy porous material, and this sheet thickness H is
60 μm, length is 150mm, and width is 100mm, and average pore size is 54.1 μm, and porosity is 40.16%.This flexible, porous metal
Paper tinsel preparation method is：First, to purity be more than 99%, thickness is that 10 μm of Cu paper tinsel (carrier) is surface-treated：Using matter
Amount concentration is the impurity such as 10% greasy dirt on NaOH solution cleaning Cu paper tinsel surface, again Cu paper tinsel is put into mass concentration 10% after washing
H2SO4Pickling two minutes in solution, remove oxide and the rust stain on Cu paper tinsel surface；Again the Cu paper tinsel after alkali cleaning, pickling is immersed
Clean 8min with ultrasound wave in acetone soln, be finally putting in vacuum drying oven and dried, and record Cu paper tinsel quality；Then, with
Simple substance Ni powder is raw material, and with ethanol as dispersant, with PVB as binding agent, the mass ratio by PVB and ethanol is 4:100 ratio
PVB is added in ethanol and makes PVB solution, hereafter add PVB solution in the ratio adding Ni powder 25g in every 100ml ethanol again
In, make Ni powder fully dispersed uniformly by stirring, obtain thick suspension；Hereafter, Cu paper tinsel is close to the mould of masking frock
Plate 221 surface, controls the thickness of overlay film, then described suspension is injected masking work by adjusting the height of template 221 top surface
It is ensured that control 1 Ni with Cu mass ratio in the shaping mold cavity of dress：1 about, the blank dress after then being dried and drying
Enter diaphragm sintering frock as shown in Figures 4 and 5, be sintered by embodiment 1 identical sintering process.
The flexible, porous metal forming performance comparison result of embodiment 1～3 is as shown in table 1.
Table 1：Flexible, porous metal forming performance comparison result
Claims (9)
1. flexible, porous metal forming it is characterised in that：It is to be made up of by the metal polyporous material of matrix phase solid solution alloy
Thin slice, the thickness of this thin slice is 5～200 μm, average pore size is 0.05～100 μm, and porosity is 15～70%；This flexible, porous
The step of metal forming preparation method includes：(1) prepare carrier, described carrier is metal porous by constitute flexible, porous metal forming
The paillon foil that a certain element in material or several element are constituted；(2) remaining element of composition metal porous material is made
Raw material powder dispersant and binding agent are configured to thick suspension；(3) described suspension is attached to carrier surface and makes
Drying formed and be attached to diaphragm on carrier surface；(4) carrier of attachment diaphragm is loaded the agglomerant coincideing with its profile
Then enter row constraint sintering in dress, take out in sintering frock after sintering and obtain flexible, porous metal forming；Wherein, step (3)
Middle described suspension is attached to by carrier surface using following masking frock, this masking frock includes：Fixed part, described fixed part
Including framed for molding diaphragm edge；Adjustment portion, described adjustment portion includes and the framed template coordinating for placing carrier,
Described template is connected with the adjusting means that can make the movement on framed depth direction of this template；Movable part, described movable part bag
Include positioned at framed top surface and cutting edge and framed top surface keep the scraper flushing in the course of the work.
2. flexible, porous metal forming as claimed in claim 1 it is characterised in that：Described thin slice is base by unlimited solid solution alloy
The metal polyporous material of body phase is constituted.
3. flexible, porous metal forming as claimed in claim 2 it is characterised in that：Described thin slice is by Ag-Au solid solution, Ti-Zr
Solid solution, Mg-Cd solid solution or Fe-Cr solid solution are constituted by the metal polyporous material of matrix phase.
4. flexible, porous metal forming as claimed in claim 2 it is characterised in that：Described thin slice is many by Ni-Cu solid solution metal
Porous materials are constituted.
5. flexible, porous metal forming as claimed in claim 1 it is characterised in that：Described thin slice is base by limit solid solution alloy
The metal polyporous material of body phase is constituted.
6. flexible, porous metal forming as claimed in claim 5 it is characterised in that：Described thin slice is by Cu-Al solid solution, Cu-Zn
Solid solution, Fe-C-Cr solid solution are constituted by the metal polyporous material of matrix phase.
7. the preparation method of the flexible, porous metal forming described in claim 1, its step includes：(1) carrier, described carrier are prepared
It is the paillon foil being made up of a certain element in the metal polyporous material constituting flexible, porous metal forming or several element；(2) will
The raw material powder dispersant that remaining element of composition metal porous material is made and binding agent are configured to thick suspension；
(3) described suspension is attached to carrier surface and is allowed to dry formed and is attached to diaphragm on carrier surface；(4) by coherent film
The carrier of piece is loaded in the sintering frock being coincide with its profile and then enters row constraint sintering, takes out simultaneously after sintering in sintering frock
Obtain flexible, porous metal forming；In step (3), described suspension is attached to by carrier surface using following masking frock, this masking
Frock includes：Fixed part, described fixed part includes framed for molding diaphragm edge；Adjustment portion, described adjustment portion include with
The framed template coordinating for placing carrier, described template is connected with the tune that can make the movement on framed depth direction of this template
Regulating device；Movable part, described movable part is included positioned at framed top surface and cutting edge and framed top surface keep neat in the course of the work
Flat scraper.
8. flexible, porous metal forming as claimed in claim 7 preparation method it is characterised in that：The burning adopting in step (4)
Knot frock includes upper die and lower die and the side mould be made up of exotic material, described upper die and lower die respectively with the cooperation of side mould thus
Form the die cavity for matching with the carrier of internal attachment diaphragm；Described die cavity is connected with the row for distributing sintering volatile matter
Depressed structure, described exhaust structure be upper mould with while mould matching part reserve fit clearance and/or lower mould and while
Fit clearance that the matching part of mould is reserved and/or set at least one of upper die and lower die and side mould
Pore.
9. flexible, porous metal forming as claimed in claim 8 preparation method it is characterised in that：Described side mould is a mask,
Upper die and lower die are respectively clamping plate, are provided with least triple laminate in described mask, are formed between two laminated planks of arbitrary neighborhood
Described die cavity.
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| CN104959612B (en) * | 2015-05-26 | 2017-10-27 | 成都易态科技有限公司 | The preparation method of porous filtering film and porous filtering film |
| CN104874798B (en) * | 2015-05-26 | 2018-02-16 | 成都易态科技有限公司 | The preparation method of porous filtering film and porous filtering film |
| CN105107385B (en) * | 2015-08-31 | 2018-03-20 | 成都易态科技有限公司 | Plate-type filtering membrane module |
| CN106622855A (en) * | 2016-10-31 | 2017-05-10 | 成都易态科技有限公司 | Filtering material production equipment |
| CN107321193A (en) * | 2017-06-22 | 2017-11-07 | 成都易态科技有限公司 | The manufacturing equipment of sintered porous filtration membrane |
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| JP2001040402A (en) * | 1999-07-29 | 2001-02-13 | Daido Steel Co Ltd | Porous metallic thin sheet body and its manufacture |
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| JP5976354B2 (en) * | 2011-09-27 | 2016-08-23 | 新日鉄住金化学株式会社 | Porous sintered metal and manufacturing method thereof |
| CN103343251B (en) * | 2013-06-30 | 2015-08-05 | 成都易态膜分离技术有限公司 | Sintering Ti-Al base alloy porous material, application and improve the method for its pore structure |
| CN103409678B (en) * | 2013-07-31 | 2015-10-07 | 成都易态科技有限公司 | Sintering Fe-Al base alloy porous material and apply its filtering element |
| CN103432828B (en) * | 2013-09-23 | 2015-05-13 | 西北有色金属研究院 | Preparation method of porous metal film |
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| US5010050A (en) * | 1988-04-23 | 1991-04-23 | Metallgesellschaft Ag | Process of producing composite material consisting of sheet metal plates, metal strips and foils having a skeleton surface structure and use of the composite materials |
| CN101251351A (en) * | 2008-03-18 | 2008-08-27 | 华东理工大学 | Iron-based powder porous surface heat-exchanging tube and manufacture method thereof |
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