CN104001374B - Sintered porous material screen plate and for preparing the prefabricated hollow slab of this screen plate - Google Patents
Sintered porous material screen plate and for preparing the prefabricated hollow slab of this screen plate Download PDFInfo
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- CN104001374B CN104001374B CN201410240639.7A CN201410240639A CN104001374B CN 104001374 B CN104001374 B CN 104001374B CN 201410240639 A CN201410240639 A CN 201410240639A CN 104001374 B CN104001374 B CN 104001374B
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Abstract
The invention discloses a kind of structural strength, filter efficiency all good, and be easy to the sintered porous material screen plate that manufactures and for preparing the prefabricated hollow slab of this screen plate.This screen plate includes by sintering diamond bit or by sintering the screen plate body that ceramic porous material is constituted, described screen plate body is hollow platy structure, this screen plate body is sintered making by the prefabricated hollow slab of powder materials compression molding, one edge of this prefabricated hollow slab is provided with long and narrow interior mould and looses core mouth, in the inner chamber of prefabricated hollow slab relative to this mouth of loosing core be provided with even this prefabricated hollow slab relative to the reinforcement in two plate faces, described in mouth, the reinforcement Integral mold when this prefabricated hollow slab of compression molding of loosing core molded on this prefabricated hollow slab；The sealing strip closing this mouth of loosing core is installed on described screen plate body.This screen plate has higher structural strength, easily ensures filter efficiency, and is easy to manufacture.
Description
Technical field
The present invention relates to tabular sintered body and technology of preparing thereof, particularly relate to sintered porous material screen plate and technology of preparing thereof.
Background technology
Sintered porous material filter element is typically formed as tubulose, claims sintered porous material filter tube.Sometimes, sintered porous material
Filter element also makes tabular, claims sintered porous material screen plate.Such as, the filter element that some vacuum filters are used is just
Ceramic porous material screen plate is sintered for sector.
Current sintered porous material screen plate generally has following three class formations and preparation method: the first kind is injection forming, i.e.
Obtained the ceramic filter substrate with hollow structure by slip casting, and filling supports granule in cavity, sintered form, then
Applying on its surface to filter top layer, a kind of ceramic filtering board for separating solid from liquid and preparation method as disclosed in CN1198357A are again
Belong to this type of；Equations of The Second Kind is by the screen plate of involutory for two panels bonding acquisition hollow structure after collapsible mould pressing formation, i.e. by molding
To one wearing raised support rib, one side is the micropore ceramics monolithic of plane, and then by involutory for two panels bonding, its technological process is general
For dispensing, mold monolithic, burn till, plane machining, bonding, fitting attachments, or dispensing, mold pressing monolithic, bonding, burn till,
Plane machining, fitting attachments, as described in CN1390623A, microporous ceramic filter plate i.e. belongs to this type of；3rd class is CN1486212A
Disclosed filter element and manufacture method thereof, be to arrange at least one in ceramic mixture for desired recessed when molding
The core material in region, is pressed into base, then through high temperature sintering, is used in the core material of recessed area by after-flame, thus
To substantially continuous filtering surface and required hollow duct, then obtain filter working lining by soaking paste, injection, pouring type,
The most sintered obtaining sinters microporous layer.
The shortcoming of the above-mentioned first kind is: for ensureing that screen plate has enough mechanical strengths, generally need to use the pottery of relatively small particle
Microgranule, such gained micropore is tiny, and screen plate flow resistance can be caused to increase；Secondly, grouting method molding can only obtain perisporium
The ducted body that face is of substantially equal, owing to being placed restrictions on by suction wall thickness, two side seems relatively thin, proceeds to sidewall tensile strength relatively low,
Screen plate root is the most often caused to occur cracking even to fracture；Besides, hollow support is to prop up for particle packing
Support, resistance of water drainage is relatively big, affects filter efficiency and production capacity.The shortcoming of Equations of The Second Kind is: the technological process of production is longer, produces effect
Rate is the highest, and the most involutory bonding not only work efficiency is low, but also can cause many defects, such as bonding agent consumption and bonding compression
Power is uneven, can cause the cracking of matrix；Internal unnecessary binding agent can produce crude protrusion in raised support rib side, occupies stream
Road increases resistance of water drainage；Besides, bonding product in use, is also easy to occur bonding force not strong and ftracture, and this type of is opened
Splitting and account for about 5%, and dissymmetrical structure, anti-suction alternate stress fatigue strength is low, and service life is short.Above-mentioned 3rd class
Shortcoming is: global density exists larger difference, and particularly two screen plate face connecting portion loose densities are low, have a strong impact on substrate
Overall mechanical strength, in the course of the work, aspirate and recoil alternate stress, easily occurs fatigue cracking to scrap；And also may be used
Because screen plate each several part density is different, and can deform, even ftracture, cause yield rate to reduce in sintering process.
Summary of the invention
The present invention first has to solve the technical problem that to be to provide a kind of structural strength, filter efficiency all good, and is easy to the sintering manufactured
Porous material screen plate and for preparing the prefabricated hollow slab of this screen plate.
The present invention its secondary solve the technical problem that be to provide a kind of be easy to manufacture above-mentioned prefabricated hollow slab prepare sintered porous material
Expect the isostatic pressing mold of screen plate and utilize the method preparing sintered porous material screen plate of this mould.
The present invention further to solve the technical problem that and be to provide one for including but not limited to that above-mentioned prefabricated hollow slab enters
The special sintering equipment preparing tabular sintered body of row sintering and the method employing this device, improve product sintering quality.
The sintered porous material screen plate of the present invention includes by sintering diamond bit or by sintering the mistake that ceramic porous material is constituted
Filter plate body, described screen plate body is hollow platy structure, and this screen plate body is by the prefabricated hollow of powder materials compression molding
Slab is sintered making, and an edge of this prefabricated hollow slab is provided with long and narrow interior mould and looses core mouth, prefabricated hollow slab interior
In chamber relative to this mouth of loosing core be provided with even this prefabricated hollow slab relative to the reinforcement in two plate faces, described in loose core mouth, reinforcement molding
During this prefabricated hollow slab of molding, Integral mold is molded on this prefabricated hollow slab；Being provided with closing on described screen plate body should
Loose core the sealing strip of mouth, this sealing strip or screen plate body are additionally provided with and the outlet of screen plate chamber body conducting.Owing to loosing core
Mouth, reinforcement Integral mold when this prefabricated hollow slab of compression molding are molded on this prefabricated hollow slab, interior after compression molding
Mould (for inner chamber, reinforcement, the mouth of loosing core of moulding prefabricated hollow slab) is extracted out and the demoulding, by prefabricated hollow from mouth of loosing core
After installing described sealing strip on the screen plate body that slab sintering is made, sintered porous material screen plate is made the most substantially.This sintering is many
Porous materials screen plate can have higher structural strength compared to existing several screen plates, easily ensures filter efficiency, and is easy to manufacture.
As a kind of concrete application example of above-mentioned sintered porous material screen plate, described screen plate body is trapezoidal or fan-shaped tabular
Structure, it includes top margin portion that linear or in circular arc bottom side portion is oppositely arranged with described bottom side portion and is connected respectively
Bottom side portion and the left and right sides edge in top margin portion, described sealing strip is positioned in the bottom side portion of this screen plate body and prolongs along this bottom side portion
Stretching setting, described outlet is arranged in top margin portion, and this outlet and mouth of loosing core, reinforcement are in the lump at compression molding prefabricated hollow slab
Time Integral mold molded on prefabricated hollow slab.The sintered porous material screen plate of this application example can be used to replace disk vacuum
The fan-shaped sintering ceramic porous material screen plate used on filter.Wherein, as a kind of preferred structure of its reinforcement, described
Reinforcement includes that at least strip reinforcement, one end of this strip reinforcement are connected as a single entity, separately with the medial surface in described top margin portion
One end extends close in the region of bottom side portion along interior mould direction of loosing core.Further, described reinforcement includes that two are mutually put down
Row the described strip reinforcement being symmetrical set in the inner chamber of screen plate body.
Above-mentioned sealing strip can be constituted by rustless steel or by the material identical with screen plate body.It addition, described sealing strip can use
Weld or be adhered at the mouth of loosing core of screen plate body.Additionally, screen plate body is preferably by sintering Ti-Al intermetallic compound base
Alloy porous material or sintering Fe-Al dual alloy billet porous material are constituted.
Preparing the prefabricated hollow slab of above-mentioned sintered porous material screen plate, by powder materials compression molding, one edge is provided with narrow
Long interior mould is loosed core mouth, and in its inner chamber, this mouth of loosing core is provided with the reinforcement on this prefabricated hollow slab of connection relative to two plate faces relatively,
Described mouth of loosing core, the reinforcement Integral mold when compression molding prefabricated hollow slab is molded on this prefabricated hollow slab.
This prefabricated hollow slab can be trapezoidal or fan-shaped platy structure, it include linear or bottom side portion in circular arc and
Top margin portion that described bottom side portion is oppositely arranged and connect the left and right sides edge of bottom side portion and top margin portion respectively, described in loose core mouth position
In the bottom side portion of this prefabricated hollow slab and extended along this bottom side portion, described top margin portion be provided with in prefabricated hollow slab
Chamber conducting outlet, this outlet and mouth of loosing core, reinforcement in the lump when compression molding prefabricated hollow slab Integral mold molded in advance
On hollow slab processed.It addition, in this prefabricated hollow slab, as a kind of concrete structure of its reinforcement, described reinforcement bag
Include two strip reinforcements being parallel to each other and be symmetrical set in the inner chamber of prefabricated hollow slab, one end of strip reinforcement
Being connected as a single entity with the medial surface in described top margin portion, the other end extends close in the region of bottom side portion along interior mould direction of loosing core.
The present invention prepares the isostatic pressing mold of sintered porous material screen plate, this mould include outer form unit, interior form unit,
Bottom envelope form unit and top envelope form unit, described outer form unit includes the hollow sheeting shape set being made up of elastomeric material, this hollow sheeting
Shape is arranged with top opening and base opening, and described top opening and base opening are tightly connected with top envelope form unit and bottom envelope form unit respectively；Described
Interior form unit includes the central layer suitable with the inner chamber of hollow sheeting shape set, central layer, hollow sheeting shape set, bottom envelope form unit and top
Forming mold cavity between portion's envelope form unit, the bottom location and installation of central layer is on the envelope form unit of bottom, and central layer top is near external mold
The top opening of unit is also provided with in central layer the reinforcement shaping groove extended, after molding by central layer at the base opening that hollow sheeting shape is overlapped to
When extracting out time outer, the reinforcement of described reinforcement shaping groove institute molding central layer is not hindered to loose core motion.Can by this mould
Sintered porous material screen plate above-mentioned to the present invention carries out isostatic pressing, thus guarantees powder materials entirety pressurized in forming process
Uniformly, Density Distribution is uniform, improves filter effect and the structural strength of sintered porous material screen plate further.
Employing the method that sintered porous material screen plate prepared by above-mentioned mould, its step includes: 1) inserted by powder materials above-mentioned etc.
In hydrostatic profile mould, and machinery jolt ramming, make powder materials fully, uniformly fill to mold cavity, then by assemble etc.
It is compressing that iso-static pressure shaping machine put into by hydrostatic profile mould；2) being removed from the molds and obtain a prefabricated hollow slab, this is pre-
One edge of hollow slab processed is formed with long and narrow interior mould by compression molding and looses core mouth, this mouthful molding of loosing core relative in its inner chamber
There is the reinforcement relative to two plate faces on this prefabricated hollow slab of connection；3) prefabricated hollow slab is put into sintering furnace to be sintered,
Obtain by sintering diamond bit or by sintering the screen plate body that ceramic porous material is constituted after cooling, subsequently at this screen plate
The sealing strip of mouth of loosing core described in close is installed on body.Aforesaid sintered porous material screen plate can be produced by the method.
The above-mentioned method preparing sintered porous material screen plate can also use the following special sintering dress preparing tabular sintered body
Put, thus prefabricated hollow slab is carried out constraint sintering, prevent prefabricated hollow slab from deforming at high operating temperatures, improve and burn
The product quality of knot porous material screen plate.Certainly, this special sintering equipment can be used for except sintered porous material screen plate
Other outer tabular sintered bodies are sintered.This special sintering equipment includes vertical board shape groove, the groove lid being made up of exotic material
And groove lid fixing device, described vertical board shape groove includes vertical board shape groove body, is arranged at vertical board shape groove intrinsic plate shape
Deep trouth chamber and be respectively arranged at vertical board shape groove body relative to the preventing hot deformation reinforcement on two plate faces, the periphery in plate shape deep trouth chamber
And bottom lock and opening are positioned at the top of vertical board shape groove body, groove lid passes through groove lid after coordinating with the opening in this plate shape deep trouth chamber
Fixing device is fixed on vertical board shape groove body, and on groove lid, interval is disposed with steam vent.
This special sintering equipment is used to prepare tabular sintered body method particularly includes: step includes 1) first at special sintering equipment
The heat transfer of certain altitude, constraint material are laid in the bottom in plate shape deep trouth chamber, then will prepare the pre-formed slab of tabular sintered body
Load plate shape deep trouth intracavity is also placed on bottom thermal transfer, constraint material, and make pre-formed slab protect with plate shape deep trouth cavity wall
Hold setpoint distance；2) opening from plate shape deep trouth chamber pours heat transfer, constraint material into plate shape deep trouth intracavity further, makes whole pre-
Shaping slab processed is submerged in heat transfer, constraint material and is kept by this heat transfer, constraint material, and machinery jolt ramming makes heat transfer, constraint
Material fully, be uniformly filled in around pre-formed slab；3) mounting groove lid and by groove lid fixing device by groove lid and vertical board
Shape groove body is fixed, and the more special sintering equipment installed is put into sintering furnace and is sintered, and comes out of the stove and from special burning after sintering
Knot device takes out and is sintered, by pre-formed slab, the tabular sintered body formed.
Below in conjunction with the accompanying drawings will be with the detailed description of the invention aspect that the present invention is described further, the present invention adds and advantage
Giving out in the middle part of explained below, part will become apparent from the description below, or is recognized by the practice of the present invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of sintered porous material screen plate detailed description of the invention of the present invention.
Fig. 2 be in Fig. 1 A-A to sectional view.
Fig. 3 is the structural representation that the present invention prepares the isostatic pressing mold detailed description of the invention of sintered porous material screen plate.
Fig. 4 be in Fig. 3 A-A to sectional view.
Fig. 5 be by Fig. 3, mould compression molding shown in 4 after the structural representation of prefabricated hollow slab.
Fig. 6 is the structural representation that the present invention prepares the special sintering equipment (non-mounting groove lid) of tabular sintered body.
Fig. 7 be in Fig. 6 A-A to sectional view.
Fig. 8 is Fig. 6, the perspective view of special sintering equipment shown in 7.
Fig. 9 is the structural representation during special sintering equipment shown in Fig. 8 uses.
Figure 10 be in Fig. 9 A to structural representation.
Detailed description of the invention
Such as Fig. 1, shown in 2 and 5, sintered porous material screen plate includes by sintering diamond bit or by sintering ceramic porous material
The screen plate body 100 that material is constituted, described screen plate body 100 is hollow platy structure, and this screen plate body 100 is by powder
The prefabricated hollow slab 100Y of material compression molding is sintered making, and an edge of this prefabricated hollow slab 100Y is provided with long and narrow
Interior mould loose core mouth 110, this this prefabricated hollow slab of mouth 110 company of being provided with of loosing core relative in the inner chamber of prefabricated hollow slab 100Y
100Y relative to the reinforcement 120 in two plate faces, described in loose core mouth 110, reinforcement 120 at compression molding this prefabricated hollow slab 100Y
Time Integral mold molded on this prefabricated hollow slab 100Y；This mouth 110 of loosing core of closing is installed on described screen plate body 100
Sealing strip 140, this sealing strip 140 (or on screen plate body 100) is additionally provided with and screen plate body 100 inner chamber conducting
Outlet 190.Form owing to screen plate body 100 is fired by prefabricated hollow slab 100Y, therefore screen plate body 100
Structure accompany in the structure of prefabricated hollow slab 100Y, i.e. still there is mouth of loosing core on the screen plate body 100 shown in Fig. 1
110, reinforcement 120, this reinforcement 120 connects the relative two plate faces 180 (such as Fig. 2) of screen plate body 100.Due to whole pre-
Hollow slab 100Y processed is stamping of powder molding, and the inner chamber of prefabricated hollow slab 100Y is provided with the reinforcement that Integral mold is molded
120, the obstruction of reinforcement 120 fluid motion is less simultaneously, therefore the structural strength of above-mentioned sintered porous material screen plate and filtration
Efficiency is higher.
The profile of this sintered porous material screen plate can design according to specific requirement, such as, can be rectangle, circle etc..Mesh
Before in disc type filter, employ a kind of fan-shaped screen plate, in order to substitute this fan-shaped screen plate, can be by above-mentioned sintering
Porous material screen plate is designed as the shape similar with this fan-shaped screen plate.As it is shown in figure 1, screen plate body 100 is designed as ladder
Shape or fan-shaped platy structure, it include linear or bottom side portion in circular arc 150 (when bottom side portion 150 is for linear,
Screen plate body 100 is trapezoidal；When bottom side portion 150 is circular arc, screen plate body 100 is fan-shaped) and described bottom side portion
Top margin portion 160 that 150 are oppositely arranged and connect the left and right sides edge 170 in bottom side portion 150 and top margin portion 160 respectively (obviously
For hypotenuse), described sealing strip 150 is positioned in the bottom side portion 150 of this screen plate body 100 and extended along this bottom side portion 150,
Described outlet 190 is arranged in top margin portion 160；It addition, for convenience of the manufacture of sintered porous material screen plate, this outlet 190
When compression molding prefabricated hollow slab 100Y, Integral mold is molded in prefabricated hollow plate in the lump with mouth 110 of loosing core, reinforcement 120
On base 100Y.Such as Fig. 1, shown in 2 and 5, in the above-mentioned trapezoidal or screen plate body 100 of fan-shaped platy structure, as reinforcement
Muscle 120 a kind of is prone to the demoulding and the higher structure of support strength, and this reinforcement 120 includes at least strip reinforcement 120,
One end of this strip reinforcement 120 is connected as a single entity with the medial surface in described top margin portion 160, the other end along interior mould loose core direction extend
To in the region of bottom side portion 150.Reinforcement 120 preferably includes two and is parallel to each other and at the inner chamber of screen plate body 100
In the described strip reinforcement 120 that is symmetrical set.
Trapezoidal with above-mentioned or fan-shaped platy structure screen plate body 100 is corresponding, as it is shown in figure 5, prepare this screen plate body
The prefabricated hollow slab of 100 is the most also trapezoidal or fan-shaped platy structure, and it includes linear or in circular arc bottom side portion
150 top margin portions 160 being oppositely arranged with described bottom side portion 150 and be connected the left and right of bottom side portion 150 and top margin portion 160 respectively
Both sides edge 170 (for hypotenuse), described in mouth 110 of loosing core be positioned in the bottom side portion 150 of this prefabricated hollow slab and along this bottom side portion
150 is extended, described top margin portion 160 be provided with and prefabricated hollow slab inner chamber conducting outlet 190, this outlet 190 with take out
Core mouth 110, reinforcement 120 in the lump when compression molding prefabricated hollow slab Integral mold molded on prefabricated hollow slab.Its
In, described reinforcement 120 includes two strips being parallel to each other and be symmetrical set in the inner chamber of prefabricated hollow slab and adds
Strong muscle 120, one end of strip reinforcement 120 is connected as a single entity with the medial surface in described top margin portion 160, and the other end is loosed core along interior mould
Direction extends close in the region of bottom side portion 150.
Above-mentioned sintered porous material screen plate is prepared by following methods: first, is inserted by powder materials in an isostatic pressing mold,
And machinery jolt ramming, make powder materials fully, uniformly fill to mold cavity, then the isostatic pressing mold assembled is put into
In iso-static pressure shaping machine compressing；Secondly, it is removed from the molds and obtains prefabricated hollow slab 100Y, this prefabricated hollow slab
One edge of 100Y is formed with long and narrow interior mould by compression molding and looses core mouth 110, becomes relative to this mouth 110 of loosing core in its inner chamber
Type has the reinforcement 120 on this prefabricated hollow slab of connection relative to two plate faces；Hereafter, prefabricated hollow slab 100Y is put into sintering
Be sintered in stove, after cooling, obtain screen plate body 100, install on this screen plate body 100 subsequently be used for closing described
Loose core the sealing strip 140 of mouth 110.Wherein, as Fig. 3,4, above-mentioned isostatic pressing mold structure specifically include outer form unit 210,
Interior form unit 220, bottom envelope form unit 230 and top envelope form unit 240, described outer form unit 210 includes by elastomeric material system
The hollow sheeting shape set 211 become, this hollow sheeting shape set 211 is provided with top opening and base opening, and described top opening and base opening seal mould with top respectively
Unit 240 and bottom envelope form unit 230 are tightly connected；Described interior form unit 220 includes and the inner chamber phase of hollow sheeting shape set 211
Adaptive central layer 221, between central layer 221, hollow sheeting shape set 211, bottom envelope form unit 230 and top envelope form unit 240
Forming mold cavity, the bottom location and installation of central layer 221 is on the envelope form unit 230 of bottom, and central layer 221 top is near external mold list
Unit 210 top opening and be provided with in central layer 221 extend reinforcement shaping groove 221a, by central layer 221 from hollow sheeting after molding
At the base opening of shape set 211 outside time when extracting out, the reinforcement of described reinforcement shaping groove 221a institute molding do not hinder central layer
221 loose core motion.
As shown in Figure 3,4, owing to prefabricated hollow slab 100Y to be prepared is aforesaid trapezoidal or fan-shaped platy structure, because of
This, in this isostatic pressing mold, described central layer 221 is isosceles trapezoidal structure, and bottom it, location and installation seals form unit in bottom
On 230, top margin is provided with the molding location bar 221b raised up, and mould list is sealed with top in the upper end of this molding location bar 221b
Hole, location corresponding in unit 240 is suitable, the inner side of described hollow sheeting shape set 211 be provided with respectively with the left and right side of central layer 221
The interior skew wall 211a of parallel, spaced-apart certain distance.Above-mentioned molding location bar 221b had both played the positioning action to central layer 221,
It is also used for the outlet 19 on moulding prefabricated hollow slab 100Y simultaneously.It addition, when the reinforcement 120 in prefabricated hollow slab 100Y
Including at least strip reinforcement 120, one end of this strip reinforcement 120 is linked as one with the medial surface in described top margin portion 160
Body, the other end along interior mould loose core direction extend close in the region of bottom side portion 150 time, accordingly, reinforcement shaping groove 221a
Same number and the elongated slot paralleled with the direction of loosing core of central layer 221 will be included.One preferably designs: molding positions
Bar 221b is positioned on the centrage of central layer 221, and reinforcement shaping groove 221a includes that two are symmetricly set on molding location bar 221b
The described elongated slot of the left and right sides, so, i.e. forms two in the prefabricated hollow slab 100Y of molding and is parallel to each other and prefabricated
The described strip reinforcement 120 being symmetrical set in the inner chamber of hollow slab 100Y, and outlet 19 is located just at two strips
Between reinforcement 120.
The most as shown in Figure 3,4, in above-mentioned mould, it is fixed that the concrete structure of described bottom envelope form unit 230 includes being provided with central layer
The position rigid base 231 of groove and be arranged on above rigid base 231 and overlap between 211 at central layer 221 and hollow sheeting shape
Bottom rubber seal plug 232.Meanwhile, the concrete structure of described top envelope form unit 240 includes rigid cover plate 241 and arranges
Top rubber sealing-plug 242 below rigid cover plate 241, rigid cover plate 241 and top rubber sealing-plug 242 form one
Clog in the top opening of hollow sheeting shape set 211 and with the envelope die body of its adaptation.Bottom envelope form unit 230 seals form unit 240 with top
In all employ rigid member (such as steel component) and add the structure of rubber seal plug, both ensure that sealing reliability, also protected simultaneously
Integral rigidity and the intensity of mould are demonstrate,proved.When the upper end of described molding location bar 221b is corresponding with the envelope form unit 240 of top
In the case of hole, location is suitable, hole, location adaptive with bar 221b upper end, molding location in the envelope form unit 240 of top the most only sets
On top rubber sealing-plug 242.It addition, outer form unit 210 may also include and is arranged on hollow sheeting shape and overlaps the firm of 211 outer surfaces
Property clamping plate 212, improve further the integral rigidity of mould, it is ensured that Forming Quality.Fig. 3, also divide outside the two ends up and down of mould in 4
The tightliest being cased with rubber sealing boot 213, when preventing isostatic pressing further, pressure oil penetrates into mould and creates contamination of products.
Above-mentioned prepare in sintered porous material screen plate method, it be also possible to use a kind of special sintering equipment preparing tabular sintered body.
If Fig. 6 is to shown in 10, this device includes the vertical board shape groove 310 be made up of exotic material, and (such as vertical board shape groove 310 is whole
Body is made up of high temperature resistant stainless steel), groove lid 320 and groove lid fixing device 330, described vertical board shape groove 310 includes vertical board
Shape groove body 311, the plate shape deep trouth chamber 312 being arranged in vertical board shape groove body 311 and be respectively arranged at vertical board shape groove
Preventing hot deformation reinforcement 313 on the relative two plate face 311a of body 311, the periphery in plate shape deep trouth chamber 312 and bottom lock and open
Mouth is positioned at the top of vertical board shape groove body 311, and groove lid 320 is solid by groove lid after coordinating with the opening in this plate shape deep trouth chamber 312
Determining device 330 to be fixed on vertical board shape groove body 311, on groove lid 320, interval is disposed with steam vent 321.Groove lid 320 is
Identical material is used to make with vertical board shape groove 310 well, in case because of thermal coefficient of expansion between groove lid 320 and vertical board shape groove 310
Difference causes damage.Before sintering, first the bottom in the plate shape deep trouth chamber 312 of this special sintering equipment lay certain altitude heat transfer,
Constraint material (such as aluminium oxide powder), then will prepare pre-formed slab (the above-mentioned prefabricated hollow slab of tabular sintered body
100Y) load plate shape deep trouth chamber 312 is interior and is placed on bottom thermal transfer, constraint material, and makes pre-formed slab deep with plate shape
Vallecular cavity 312 inwall keeps setpoint distance；Then, opening from plate shape deep trouth chamber 312 falls in plate shape deep trouth chamber 312 further
Enter heat transfer, constraint material, make whole pre-formed slab be submerged in heat transfer, constraint material and by this heat transfer, constraint material institute
Keep, machinery jolt ramming make heat transfer, constraint material fully, be uniformly filled in around pre-formed slab；Hereafter, mounting groove lid 320
And groove lid 320 being fixed with vertical board shape groove body 311 by groove lid fixing device 330, the more special sintering equipment that will install
Put into sintering furnace to be sintered, come out of the stove after sintering and take out screen plate body 100 from special sintering equipment；Before mounting groove lid 320,
Mounting groove lid 320 again after preferably the top open part in plate shape deep trouth chamber 312 is covered by high temperature resistant twine, in case heat transfer, constraint
Material spaced apart steam vent 321 from groove lid 320 is revealed.
For making the heat-transfer effect of vertical board shape groove 310 be more suitable for the sintering of tabular sintered body, such as Fig. 6 to 10, described vertical board shape
Groove body 311 and plate shape deep trouth chamber 312 thereof are rectangular configuration, and the outer wall in vertical board shape groove body 311 side plate face is to corresponding
The wall thickness formed between the inwall of plate shape deep trouth chamber 312 is deep to respective panels shape with the outer wall of vertical board shape another lateral plates of groove body 311
The wall thickness formed between vallecular cavity 312 inwall is the most equal.It addition, the top of vertical board 311 liang of plate face 311a of shape groove body is also
Further it is respectively provided with the top that protruding and along this vertical board shape groove body 311 length direction extends outside plate face horizontal
To reinforcement 313a, described groove lid fixing device 330 includes that several length direction along vertical board shape groove body 311 is spaced and sets
The clip 331 put, described clip 331 holding card from outside to inside lives the top of vertical board shape groove body 311 and the top horizontal stroke of both sides thereof
To reinforcement 313a thus groove lid 320 is pressed on the opening in plate shape deep trouth chamber 312, so groove lid 320 can not only be entered
Row is very effective fixing, can effectively prevent vertical board under the common effect of top cross reinforcing 313a and clip 331 simultaneously
Shape groove 310 opening at high temperature deforms, it is to avoid after sintering, product is not easily taken out of awkward situation.
It addition, such as Fig. 6 to 10, the preferred structure of described preventing hot deformation reinforcement 313 is: preventing hot deformation reinforcement 313 includes
The many cross reinforcing 313b that protruding and along vertical board shape groove body 311 length direction extends outside the 311a of plate face, with
Cross reinforcing 313b on the 311a of side plate face is spaced in the short transverse of vertical board shape groove body 311.This knot
Structure can effectively prevent the thermal deformation of two plate face 311a, the most beneficially plate face 311a on vertical board shape groove body 311
On the uniformity of Temperature Distribution, thus preferably ensure product sintering quality.At least one also can be arranged in same lateral plates 311a
With handles 340 are connected, in order to operative on individual cross reinforcing 313b.
Embodiment
Such as Fig. 1,2 and 5, for the sintered porous material screen plate of disc type filter, including by sintering Ti-Al metal
Between compound base alloy porous material constitute screen plate body 100, screen plate body 100 be sector platy structure, it is by powder
The end material molded prefabricated hollow slab 100Y of isostatic mold is sintered making, an edge of this prefabricated hollow slab 100Y
Be provided with long and narrow interior mould to loose core mouth 110, in the inner chamber of prefabricated hollow slab 100Y relatively this loose core mouth 110 company of being provided with this prefabricated in
Hollow plate base 100Y is relative to the reinforcement 120 in two plate faces, and reinforcement 120 includes that two are parallel to each other and in prefabricated hollow slab
The strip reinforcement 120 being symmetrical set in chamber, one end of strip reinforcement 120 connects with the medial surface in described top margin portion 160
Being integrated, the other end extends close in the region of bottom side portion 150 along interior mould direction of loosing core, described in loose core mouth 110, reinforcement
120 when isostatic mold this prefabricated hollow molded slab 100Y Integral mold molded on this prefabricated hollow slab 100Y；Institute
Stating the bonding sealing strip 140 being provided with this mouth 110 of loosing core of closing on screen plate body 100, this sealing strip 140 is by stainless steel
Becoming, the center in screen plate body 100 upper topside portion 160 is provided with outlet 190, this outlet 190 and mouth 110, the reinforcement of loosing core
120 in the lump when compression molding prefabricated hollow slab 100Y Integral mold molded on prefabricated hollow slab 100Y；On screen plate
The radius R of circumference orphan is 490 millimeters, and screen plate height A is set to 266 millimeters, and width B is 250 millimeters, two, bottom peace
Dress hole centre distance C is 98 millimeters, and thickness is set to 24 millimeters, and the inclination angle of fan-shaped left and right sides edge 170 is set to 30 °.Tool
When body is installed, above-mentioned polylith sintered porous material screen plate being assembled into the banding disk of 360 °, these disks are the most uniform
And be arranged in host horizontal rotating shaft.Disk continuous hopper through lower section in rotation during work, make slurry on screen plate not
Forming filter cake disconnectedly, and scraped by scraper, the water leached enters screen plate inner chamber, and is constantly discharged by outlet 190.
The manufacture method of above-mentioned sintered porous material screen plate is: inserted in above-mentioned isostatic pressing mold by powder materials, and machine
Tool jolt ramming, makes powder materials fully, uniformly fill to mold cavity, is then put into by the isostatic pressing mold assembled etc. quiet
In pressing machine compressing；It is removed from the molds and obtains a prefabricated hollow slab 100Y；Prefabricated hollow slab 100Y is put
Enter above-mentioned special sintering equipment, then special sintering equipment is put into sintering furnace and be sintered, after cooling, obtain screen plate body
100, on screen plate body 100, then it is machined into installing hole (two installing hole centre distances C are 98 millimeters), with
After on this screen plate body 100 bonding installation for closing the sealing strip 140 of mouth 110 of loosing core.
Claims (9)
1. sintered porous material screen plate, including by sintering diamond bit or by sintering the screen plate that ceramic porous material is constituted
Body (100), described screen plate body (100) is hollow platy structure, it is characterised in that: described screen plate body (100)
It is sintered making by the prefabricated hollow slab (100Y) of powder materials compression molding, the one of this prefabricated hollow slab (100Y)
Edge is provided with long and narrow interior mould and looses core mouth (110), this mouth of loosing core (110) relative in the inner chamber of prefabricated hollow slab (100Y)
The reinforcement (120) in the relative two plate faces of this prefabricated hollow slab (100Y) of the company of being provided with, described in loose core mouth (110), reinforcement (120)
When this prefabricated hollow slab (100Y) of compression molding, Integral mold is molded on this prefabricated hollow slab (100Y)；Described mistake
The sealing strip (140) closing this mouth of loosing core (110), this sealing strip (140) or screen plate are installed on filter plate body (100)
It is additionally provided with on body (100) and the outlet (190) of screen plate body (100) inner chamber conducting；Described screen plate body (100)
For trapezoidal or fan-shaped platy structure, it includes the linear or bottom side portion (150) in circular arc and described bottom side portion (150)
The top margin portion (160) being oppositely arranged and the left and right sides edge (170) connecting bottom side portion (150) and top margin portion (160) respectively,
Described sealing strip (140) is positioned at the bottom side portion (150) of this screen plate body (100) and above and extends along this bottom side portion (150)
Arranging, described outlet (190) is arranged in top margin portion (160), this outlet (190) and mouth of loosing core (110), reinforcement (120)
When compression molding prefabricated hollow slab (100Y), Integral mold is molded on prefabricated hollow slab (100Y) in the lump.
2. sintered porous material screen plate as claimed in claim 1, it is characterised in that: described reinforcement (120) include to
A few strip reinforcement (120), one end of this strip reinforcement (120) is linked as with the medial surface of described top margin portion (160)
Integrally, the other end extends close in the region of bottom side portion (150) along interior mould direction of loosing core.
3. sintered porous material screen plate as claimed in claim 2, it is characterised in that: described reinforcement (120) includes two
The described strip reinforcement (120) that root is parallel to each other and is symmetrical set in the inner chamber of screen plate body (100).
4. the sintered porous material screen plate as described in any one claim in claims 1 to 3, it is characterised in that: institute
State sealing strip (140) and make by rustless steel or by the material identical with screen plate body (100).
5. the sintered porous material screen plate as described in any one claim in claims 1 to 3, it is characterised in that: institute
State mouth of loosing core (110) place that sealing strip (140) welds or is adhered to screen plate body (100).
6. the sintered porous material screen plate as described in any one claim in claims 1 to 3, it is characterised in that: institute
State screen plate body (100) by sintering Ti-Al dual alloy billet porous material or sintering Fe-Al intermetallic compound
Base alloy porous material is made.
7. prepare the prefabricated hollow slab of sintered porous material screen plate, it is characterised in that: by powder materials compression molding, its
Being provided with long and narrow interior mould at edge to loose core mouth (110), in its inner chamber, this mouth of loosing core (110) relative is provided with this prefabricated hollow slab of connection
The reinforcement (120) in upper relative two plate faces, described in loose core mouth (110), reinforcement (120) at compression molding prefabricated hollow slab
Time Integral mold molded on this prefabricated hollow slab.
8. prefabricated hollow slab as claimed in claim 7, it is characterised in that: this prefabricated hollow slab is trapezoidal or fan-shaped tabular
Structure, it includes the top margin portion that linear or bottom side portion (150) in circular arc and described bottom side portion (150) are oppositely arranged
(160) and respectively connect the left and right sides edge (170) of bottom side portion (150) and top margin portion (160), described in loose core mouth (110)
The bottom side portion (150) being positioned at this prefabricated hollow slab is upper and extended along this bottom side portion (150), described top margin portion (160)
It is provided with and the outlet (190) of prefabricated hollow slab inner chamber conducting, this outlet (190) and mouth of loosing core (110), reinforcement (120)
When compression molding prefabricated hollow slab, Integral mold is molded on prefabricated hollow slab in the lump.
9. prefabricated hollow slab as claimed in claim 7 or 8, it is characterised in that: described reinforcement (120) includes two
The strip reinforcement (120) being parallel to each other and be symmetrical set in the inner chamber of prefabricated hollow slab, strip reinforcement (120)
The medial surface of one end and described top margin portion (160) be connected as a single entity, the other end extends close to bottom side portion along interior mould direction of loosing core
(150) in region.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410240639.7A CN104001374B (en) | 2014-05-30 | 2014-05-30 | Sintered porous material screen plate and for preparing the prefabricated hollow slab of this screen plate |
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| CN201410240639.7A CN104001374B (en) | 2014-05-30 | 2014-05-30 | Sintered porous material screen plate and for preparing the prefabricated hollow slab of this screen plate |
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| CN104001374A CN104001374A (en) | 2014-08-27 |
| CN104001374B true CN104001374B (en) | 2016-08-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107779639A (en) * | 2016-08-31 | 2018-03-09 | 国研高能（北京）稳态传热传质技术研究院有限公司 | A kind of aluminum material of porous sponge structure and preparation method thereof |
| CN113634748B (en) * | 2021-08-31 | 2023-05-26 | 三河市精明粉末冶金科技有限公司 | Preparation method of micro-deformation thin-wall porous material |
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| US4342664A (en) * | 1979-10-09 | 1982-08-03 | Swiss Aluminium Ltd. | Molten metal filter |
| US5937263A (en) * | 1997-07-16 | 1999-08-10 | Mott Metallurgical Corporation | Cup-shaped porous metal ultra-high efficiency filter and method of making same |
| EP0949028B1 (en) * | 1998-04-08 | 2007-07-11 | Mitsubishi Materials Corporation | High strength spongy sintered metal composite sheet and production method thereof |
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| CN104001374A (en) | 2014-08-27 |
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