CN102895815B - Sintered metal filter disc and its making method - Google Patents
Sintered metal filter disc and its making method Download PDFInfo
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- CN102895815B CN102895815B CN201210356072.0A CN201210356072A CN102895815B CN 102895815 B CN102895815 B CN 102895815B CN 201210356072 A CN201210356072 A CN 201210356072A CN 102895815 B CN102895815 B CN 102895815B
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Abstract
The invention discloses a sintered metal filter disc, which is composed of sintered metal discs, a metal disc, an upper wheel hub and a lower wheel hub, screws, a metal hoop and a sealing material. The center of each disc is provided with a through hole, and each disc is clamped and fastened by the upper wheel hub and the lower wheel hub at the central through holes. The external circumferences of the discs are wrapped and fastened by the metal hoop. The connection fastening mode is threaded connection. The bonding surfaces between the sintered metal discs the upper and lower wheel hubs, and the metal hoop are sealed by the sealing material. The invention also discloses a making method of the sintered metal filter disc. The method consists of: preparing a gradient pore structured sintered porous metal material by powder metallurgy, then processing all parts into required shapes and sizes, subjecting each disc to heating and thermal preservation, and putting the discs into a fixture to conduct assembling, and after carrying out a balance test, infusing a sealant to filter disc bonding surfaces, thus obtaining the sintered metal filter disc. The sintered metal filter disc has the advantages of compact structure, high stiffness, hard deformation of disc surface, easy disassembly as well as reusability, and is applicable to solid-liquid separation of a feed liquid by a disc type filter.
Description
Technical field
The invention belongs to new material and isolated by filtration field of mechanical technique, relate to a kind of compact conformation, card is smooth, rigidity is high, easy fractionation, reusable sintering metal filter disc, the invention still further relates to the preparation method of this sintering metal filter disc.
Background technology
Filter disc is a kind of sheet type filter element, is the core component of disc filter machine.When using disk filter to carry out solid-liquor separation, supernatant liquid enters collector tube by filter disc under pressure and discharges filter, solids in feed liquid is intercepted at filter disc surface and forms filter residue, require that filter disc structure is compact, volume is little, thus more filter disc can be set in the closed chamber of filter, obtain larger filter area, require that rigidity is high, card is smooth, filter disc and card thereof can not produce excessive deformation under pressure and the jammed effect of filter residue simultaneously.
Existing filter disc mainly contains filter cloth type, metal mesh type and sintered gold genotype.The structure of filter cloth type and metal mesh type filter disc is mostly hollow out skeleton outsourcing filter cloth or woven wire, make simple, cost is low, but filter disc rigidity is little, intensity is low, card is yielding when using.Sintered gold genotype filter disc due to adopt filter material be sintered metal plates, so the strength and stiffness of card are improved.Sintering metal filter disc is mostly welded type, and being welded as a whole by sintered metal plates and support frame forms filter disc or filter element (several filter element recomposition filter discs).Patent " filter disc for disc vacuum filter " (July 21 2009 applying date, publication number CN201470211) disclose a kind of filter disc for disc vacuum filter assembled by hollow fan-shaped sintered meshwork filter plate, hollow fan-shaped filter plate be exactly by two panels woven wire sintered plate be clipped in inner frame both sides weld formed.Sintering metal filter disc adopts welded type to have, and making is simple, connection is reliable, the advantage of compact conformation, but owing to being welded as non-disconnectable connection, in use after the strainability of sintered metal plates is lost, filter disc or filter element (comprising the auxiliary components such as support frame wherein) are scrapped with regard to entirety, can not reuse, material waste is large, and sintered metal plates also easily produces buckling deformation when welding in addition, card flatness is not high.
The filter disc of existing structure form all can not meet the requirement of disk filter to filter disc well.
Summary of the invention
The object of this invention is to provide a kind of sintering metal filter disc, split conveniently, can reuse, and card is smooth, rigidity is high, compact conformation.
Another object of the present invention is to provide the preparation method of above-mentioned sintering metal filter disc.
The technical solution adopted in the present invention is, a kind of sintering metal filter disc, comprise rosette, the upside of rosette arranges disk on sintering metal, the downside of rosette arranges sintering metal lower disc, and on sintering metal, the center of disk and sintering metal lower disc is provided with manhole; On sintering metal, the upper end of disk is middle arranges wheel hub, and upper wheel hub lower end is provided with male half coupling, and the manhole that male half coupling inserts disk on sintering metal is interior with the relative position of disk and upper wheel hub on fixing sintering metal; Arranges lower hub in the middle of the lower end of sintering metal lower disc, lower hub upper end is provided with male half coupling, with the relative position of fixing sintering metal lower disc and lower hub in the manhole that male half coupling inserts sintering metal lower disc; Lower hub is provided with multiple screwed hole, on upper wheel hub, sintering metal, on disk, rosette and sintering metal lower disc, opposite position is provided with the bolt through-hole with screwed hole equal number, screw passes bolt through-hole, is tightened in the screwed hole of lower hub, on sintering metal, the excircle place of disk, rosette and sintering metal lower disc is fastening by the wrapping of metal anchor ear, and the central through hole place of rosette is provided with multiple interior concane gap.
Another technical scheme of the present invention is, a kind of preparation method of sintering metal filter disc specifically carries out according to following steps:
Step 1,
Adopt powder metallurgy process preparation to have gradient pore structured sintering diamond bit, sintering diamond bit extexine is protective layer, and secondary lower floor has been the key-course of filtering function, then lower floor is supporting layer;
Step 2,
Disk and sintering metal lower disc on the method processing sintering metal adopting Linear cut, on sintering metal, the center of disk and sintering metal lower disc is processed with manhole, with the method processing metal disk of car or Linear cut, adopts hot rolled steel plate blank; The central through hole place of rosette is processed with several interior concane gap; Adopt the upper wheel hub of method processing and the lower hub of car, brill, upper wheel hub is identical with lower hub structure is provided with male half coupling, thread mill drilling in lower hub, opposite position processing bolt via hole on disk, rosette and sintering metal lower disc on upper wheel hub, sintering metal, the position degree of screwed hole and bolt through-hole is not more than 0.2mm;
Step 3,
By disk, sintering metal lower disc and rosette smoothing on sintering metal, flatness is not more than 0.5mm;
Step 4,
With heating furnace, disk, sintering metal lower disc and rosette on sintering metal are heated, heating-up temperature 50 DEG C ~ 200 DEG C, temperature retention time 0.5h ~ 3.5h;
Step 5,
Fast disk, sintering metal lower disc and rosette on the sintering metal heated are put into about one clipping assembling jig to assemble, holder power is 100N ~ 5000N; Then assemble, concrete assembling mode is, disk on sintering metal is placed in the upside of rosette, sintering metal lower disc is placed in the downside of rosette, on sintering metal, the upper end of disk is middle arranges wheel hub, and on the male half coupling insertion sintering metal of upper wheel hub lower end, the manhole of disk is interior with the relative position of disk and upper wheel hub on fixing sintering metal; In the middle of the lower end of sintering metal lower disc, lower hub is set, with the relative position of fixing sintering metal lower disc and lower hub in the manhole that lower hub upper end male half coupling inserts sintering metal lower disc; The male half coupling step surface place of upper wheel hub and lower hub is provided with sealing ring; Screw through upper wheel hub, bolt through-hole on sintering metal on disk, rosette and sintering metal lower disc, be tightened in the screwed hole of lower hub; On sintering metal, the excircle place of disk, rosette and sintering metal lower disc is fastening by the wrapping of metal anchor ear; Metal anchor ear be two segments combined, with bolt and nut connect, inside metal anchor ear, be lined with compressible elastic sealing bands;
Step 6,
Carry out static balance test by guide tracked static balance test device to the filter disc assembled, amount of unbalance is less than permissible value;
Step 7,
On sintering metal, the binding face place perfusion curing type sealant of disk, sintering metal lower disc and upper wheel hub, lower hub, metal anchor ear, namely obtains.
The invention has the beneficial effects as follows, filter disc structure is compact, volume is little, and card is smooth, rigidity is high, not yielding, easily splits, reusable.
Accompanying drawing explanation
Fig. 1 is the structural representation of sintering metal filter disc of the present invention.
In figure: 1. metal anchor ear, 2. disk on sintering metal, 3. rosette, 4. screw, 5. go up wheel hub, 6. lower hub, 7. sintering metal lower disc.
D is the external diameter of disk on sintering metal, sintering metal lower disc, rosette, and δ is the thickness δ of disk on sintering metal, sintering metal lower disc, and Δ is the thickness of rosette.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
As shown in Figure 1, disk 2 on sintering metal is placed in the upside of rosette 3 to concrete structure of the present invention, and sintering metal lower disc 7 is placed in the downside of rosette 3.Wherein, on sintering metal, disk 2 and sintering metal lower disc 7 adopt the sintering diamond bit of gradient pore structured design, and on sintering metal, disk 2 and the extexine of sintering metal lower disc 7 are protective layer, appearance sublevel be functional layer, again time each layer of filtering function is supporting layer.On sintering metal, the center of disk 2 and sintering metal lower disc 7 is all processed with manhole; On sintering metal, the upper end of disk 2 is middle arranges wheel hub 5, and upper wheel hub 5 lower end is provided with male half coupling, and the manhole that male half coupling inserts disk 2 on sintering metal is interior with the relative position of disk on fixing sintering metal 2 with upper wheel hub 5; Male half coupling step surface place is provided with sealing ring, to seal the faying face place of disk on sintering metal 2 with upper wheel hub 5.In the middle of the lower end of sintering metal lower disc 7, lower hub 6 is set, on structure between sintering metal lower disc 7 and lower hub 6 and the sintering metal on top disk 2 and upper wheel hub 5 symmetrical, namely lower hub 6 upper end is provided with male half coupling, and the manhole that male half coupling inserts sintering metal lower disc 7 is interior with the relative position of fixing sintering metal lower disc 7 with lower hub 6; Male half coupling step surface place is provided with sealing ring, to seal the faying face place of sintering metal lower disc 7 and lower hub 6.Lower hub 6 is processed with several screwed hole, upper wheel hub 5, sintering metal disk 2, rosette 3 and sintering metal lower disc 7 are correspondingly processed with the bolt through-hole of equal number, screw 4 passes bolt through-hole, is tightened in the screwed hole of lower hub 6, thus disk 2, rosette 3, sintering metal lower disc 7, the mutual locating parallel of lower hub 6 on upper wheel hub 5, sintering metal are connect and tightened up.On sintering metal, the excircle place of disk 2, rosette 3 and sintering metal lower disc 7 wraps up fastening by metal anchor ear 1; Metal anchor ear 1 be two segments combined, connect with bolt and nut, inside metal anchor ear 1, be lined with compressible elastic sealing bands, during to ensure to tighten on metal anchor ear 1 and sintering metal disk 2, sintering metal lower disc 7 faying face between seal No leakage.The central through hole place of rosette 3 is processed with several interior concane gap, so that the liquid after filtering is pooled to sintering metal filter disc central circular through hole place by the internal void of disk on sintering metal 2, sintering metal lower disc 7.
It is more than the concrete technical scheme of the two-sided filter disc of sintering metal in sintering metal filter disc, sintering metal one side filter disc is similar with it, unique difference is only to place sintering metal disk in the side of rosette 3, namely to place on sintering metal disk 2 in the upside of rosette 3 or places sintering metal lower disc 7 in the downside of rosette 3.
Wherein, on sintering metal, disk 2 and sintering metal lower disc 7 are for having gradient pore structured sintering diamond bit, the type of sintering diamond bit is sintering metal powder, sintered metal mesh, felt-metal or compound sintering diamond bit, filtering accuracy is 1 μm ~ 100 μm, the extexine of sintered metal materials is protective layer, appearance sublevel is functional layer, lower each layer is supporting layer again, disk 2 on sintering metal, sintering metal lower disc 7, the outside diameter d of rosette 3 is identical, on sintering metal, disk 2 is 100mm ~ 3000mm with the outside diameter d of sintering metal lower disc 7, thickness δ is 0.5mm ~ 15mm, rosette 3 outside diameter d is 100mm ~ 3000mm, thickness deltat is 3 ~ 50mm.On sintering metal, the material of disk 2, sintering metal lower disc 7, upper wheel hub 5, lower hub 6, screw 4 and metal anchor ear 1 all can adopt stainless steel, Aludirome, Copper and its alloy, titanium or titanium alloy or Ni-based ultrafine powder.
The preparation method of sintering metal filter disc of the present invention, specifically carry out according to following steps:
Step 1,
Adopt powder metallurgy process preparation to have gradient pore structured sintering diamond bit, sintering diamond bit extexine is protective layer, and secondary lower floor has been the key-course of filtering function, then lower floor is supporting layer.Wherein the type of sintering diamond bit is sintering metal powder, sintered metal mesh, felt-metal or compound sintering diamond bit, and filtering accuracy is 1 μm ~ 100 μm.Sintering metal powder and compound sintering diamond bit adopt successively spraying process preparation, and sintered metal mesh and felt-metal adopt the legal preparation of hierarchical layer stacked group.
Step 2,
The method of Linear cut is adopted to process disk 2 and sintering metal lower disc 7 on sintering metal, not blocked to ensure the internal capillary of disk 2 and sintering metal lower disc 7 on sintering metal; On sintering metal, the center of disk 2 and sintering metal lower disc 7 is processed with manhole.With the method processing metal disk 3 of car or Linear cut, adopt hot rolled steel plate blank.The central through hole place of rosette 3 is processed with several interior concane gap.Adopt the upper wheel hub 5 of method processing and the lower hub 6 of car, brill, upper wheel hub 5 is identical with lower hub 6 structure is provided with male half coupling, thread mill drilling in lower hub 6, correspondingly processing bolt via hole on disk 2, rosette 3 and sintering metal lower disc 7 on upper wheel hub 5, sintering metal, the position degree of screwed hole and bolt through-hole is not more than 0.2mm.
Wherein, on sintering metal, the outside diameter d of disk 2, sintering metal lower disc 7, rosette 3 is identical, on sintering metal, disk 2 and the outside diameter d of sintering metal lower disc 7 are 100mm ~ 3000mm, thickness δ is 0.5mm ~ 15mm, and rosette 3 outside diameter d is 100mm ~ 3000mm, thickness deltat is 3 ~ 50mm.
Step 3,
Disk on sintering metal 2, sintering metal lower disc 7 and rosette 3 are smoothed, flatness is not more than 0.5mm.
Step 4,
With heating furnace, disk on sintering metal 2, sintering metal lower disc 7 and rosette 3 are heated, heating-up temperature 50 DEG C ~ 200 DEG C, temperature retention time 0.5h ~ 3.5h, the object of heating be ensure sintering metal filter disc hot lower assembling fastening to avoid sintering metal filter disc to use under working temperature time due to each dish thermal coefficient of expansion different and produce card distortion.
Step 5,
Fast disk 2, sintering metal lower disc 7 and rosette 3 on the sintering metal heated are put into about one clipping assembling jig to assemble, holder power is 100N ~ 5000N, to ensure the laminating of each dish closely;
Concrete assembling mode is, disk 2 on sintering metal is placed in the upside of rosette 3, and sintering metal lower disc 7 is placed in the downside of rosette 3.On sintering metal, the upper end of disk 2 is middle arranges wheel hub 5, and on the male half coupling insertion sintering metal of upper wheel hub 5 lower end, the manhole of disk 2 is interior with the relative position of disk on fixing sintering metal 2 with upper wheel hub 5; In the middle of the lower end of sintering metal lower disc 7, lower hub 6 is set, on structure between sintering metal lower disc 7 and lower hub 6 and the sintering metal on top disk 2 and upper wheel hub 5 symmetrical, namely lower hub 6 upper end male half coupling insert sintering metal lower disc 7 manhole in the relative position of fixing sintering metal lower disc 7 with lower hub 6; Upper wheel hub 5 is provided with sealing ring with the male half coupling step surface place of lower hub 6; Screw 4 through the bolt through-hole on disk 2, rosette 3 and sintering metal lower disc 7 on upper wheel hub 5, sintering metal, be tightened in the screwed hole of lower hub 6, thus by disk 2, rosette 3, sintering metal lower disc 7, lower hub 6 on upper wheel hub 5, sintering metal mutually locating parallel connect and tighten up; On sintering metal, the excircle place of disk 2, rosette 3 and sintering metal lower disc 7 wraps up fastening by metal anchor ear 1; Metal anchor ear 1 be two segments combined, connect with bolt and nut, inside metal anchor ear 1, be lined with compressible elastic sealing bands, during to ensure to tighten on metal anchor ear 1 and sintering metal disk 2, sintering metal lower disc 7 faying face between seal No leakage.
Step 6,
Carry out static balance test by guide tracked static balance test device to the filter disc assembled, amount of unbalance is less than permissible value.
Step 7,
On sintering metal, the binding face place perfusion curing type sealant of disk 2, sintering metal lower disc 7 and upper wheel hub 5, lower hub 6, metal anchor ear 1, namely obtains.
Embodiment 1
Sintering metal filter disc, two-sided, material stainless steel, sintering metal disk filtration precision 5 μm, material are sintered metal mesh, outside diameter d is 100mm, thickness δ is 0.5mm, and rosette outside diameter d is 100mm, thickness deltat is 3mm.Preparation method: first prepare gradient pore structured sintering diamond bit, then the method for Linear cut is adopted to be machined to sintering metal disk required form size, rosette adopts 0.5mm hot rolled steel plate blank to process, upper lower hub adopts bar or materials in the tube to process, wherein, the position degree of screw hole and screw via hole is not more than 0.05mm, by sintering metal disk and rosette smoothing, flatness is not more than 0.05mm, then put into upper and lower clipping assembling jig fast after putting into heating furnace heating 200 DEG C of insulation 0.5h to assemble, holder power is 100N, finally static balance test is being carried out to the filter disc assembled, in sintering metal disk disk and upper lower hub after test passes, the binding face place perfusion curing type sealant of metal anchor ear, obtain.
Embodiment 2
Sintering metal filter disc, one side, material stainless steel, sintering metal disk filtration precision 5 μm, material are sintered metal mesh, outside diameter d is 100mm, thickness δ is 1.8mm, and rosette outside diameter d is 100mm, thickness deltat is 3mm.Preparation method: first prepare gradient pore structured sintering diamond bit, then the method for Linear cut is adopted to be machined to sintering metal disk required form size, rosette adopts 3mm hot rolled steel plate blank to process, upper wheel hub adopts bar or materials in the tube to process, wherein, the position degree of screw hole and screw via hole is not more than 0.05mm, by sintering metal disk and rosette smoothing, flatness is not more than 0.05mm, then put into upper and lower clipping assembling jig fast after putting into heating furnace heating 200 DEG C of insulation 0.5h to assemble, holder power is 100N, finally static balance test is being carried out to the filter disc assembled, at sintering metal disk disk and upper wheel hub after test passes, the binding face place perfusion curing type sealant of metal anchor ear, obtain.
Embodiment 3
Sintering metal filter disc, two-sided, material stainless steel, sintering metal disk filtration precision 1 μm, material are sintering metal powder, outside diameter d is 3000mm, thickness δ is 15mm, and rosette outside diameter d is 3000mm, thickness deltat is 50mm.Preparation method: first prepare gradient pore structured sintering diamond bit, then the method for Linear cut is adopted to be machined to sintering metal disk required form size, rosette adopts 50mm hot rolled steel plate blank to process, upper lower hub adopts bar or materials in the tube to process, wherein, the position degree of screw hole and screw via hole is not more than 0.05mm, by sintering metal disk and rosette smoothing, flatness is not more than 0.05mm, then put into upper and lower clipping assembling jig fast after putting into heating furnace heating 50 DEG C of insulation 3.5h to assemble, holder power is 5000N, finally static balance test is being carried out to the filter disc assembled, in sintering metal disk disk and upper lower hub after test passes, the binding face place perfusion curing type sealant of metal anchor ear, obtain.
Embodiment 4
Sintering metal filter disc, two-sided, material stainless steel, sintering metal disk filtration precision 100 μm, material are felt-metal, outside diameter d is 1000mm, thickness δ is 1mm, and rosette outside diameter d is 1000mm, thickness deltat is 3mm.Preparation method: first prepare gradient pore structured sintering diamond bit, then the method for Linear cut is adopted to be machined to sintering metal disk required form size, rosette adopts hot rolled steel plate blank to process, upper lower hub adopts bar or materials in the tube to process, wherein, the position degree of screw hole and screw via hole is not more than 0.05mm, by sintering metal disk and rosette smoothing, flatness is not more than 0.05mm, then put into upper and lower clipping assembling jig fast after putting into heating furnace heating 100 DEG C of insulation 1.5h to assemble, holder power is 400N, finally static balance test is being carried out to the filter disc assembled, in sintering metal disk disk and upper lower hub after test passes, the binding face place perfusion curing type sealant of metal anchor ear, obtain.
Embodiment 5
Sintering metal filter disc, two-sided, material stainless steel, sintering metal disk filtration precision 50 μm, material are sintered metal mesh, outside diameter d is 1000mm, thickness δ is 5mm, and rosette outside diameter d is 1000mm, thickness deltat is 5mm.Preparation method: first prepare gradient pore structured sintering diamond bit, then the method for Linear cut is adopted to be machined to sintering metal disk required form size, rosette adopts 5mm hot rolled steel plate blank to process, upper lower hub adopts bar or materials in the tube to process, wherein, the position degree of screw hole and screw via hole is not more than 0.1mm, by sintering metal disk and rosette smoothing, flatness is not more than 0.2mm, then put into upper and lower clipping assembling jig fast after putting into heating furnace heating 150 DEG C of insulation 1h to assemble, holder power is 1000N, finally static balance test is being carried out to the filter disc assembled, in sintering metal disk disk and upper lower hub after test passes, the binding face place perfusion curing type sealant of metal anchor ear, obtain.
Embodiment 6
Sintering metal filter disc, two-sided, material stainless steel, sintering metal disk filtration precision 5 μm, material are sintered metal mesh, outside diameter d is 2000mm, thickness δ is 5mm, and rosette outside diameter d is 2000mm, thickness deltat is 10mm.Preparation method: first prepare gradient pore structured sintering diamond bit, then the method for Linear cut is adopted to be machined to sintering metal disk required form size, rosette adopts 10mm hot rolled steel plate blank to process, upper lower hub adopts bar or materials in the tube to process, wherein, the position degree of screw hole and screw via hole is not more than 0.15mm, by sintering metal disk and rosette smoothing, flatness is not more than 0.2mm, then put into upper and lower clipping assembling jig fast after putting into heating furnace heating 120 DEG C of insulation 1.5h to assemble, holder power is 1500N, finally static balance test is being carried out to the filter disc assembled, in sintering metal disk disk and upper lower hub after test passes, the binding face place perfusion curing type sealant of metal anchor ear, obtain.
Below be only section Example of the present invention, the specific embodiment of the present invention includes but not limited to this.
The invention has the beneficial effects as follows: filter disc structure is compact, volume is little, card be smooth, rigidity is high, not yielding, easily to split, reusable.
Claims (1)
1. a sintering metal filter disc, it is characterized in that, comprise rosette (3), the upside of rosette (3) arranges disk on sintering metal (2), the downside of rosette (3) arranges sintering metal lower disc (7), and on described sintering metal, the center of disk (2) and sintering metal lower disc (7) is provided with manhole; On described sintering metal, the upper end of disk (2) is middle arranges wheel hub (5), upper wheel hub (5) lower end is provided with male half coupling, and the manhole that male half coupling inserts disk (2) on sintering metal is interior with the relative position of disk (2) on fixing sintering metal with upper wheel hub (5); In the middle of the lower end of described sintering metal lower disc (7), lower hub (6) is set, lower hub (6) upper end is provided with male half coupling, and the manhole that male half coupling inserts sintering metal lower disc (7) is interior with the relative position of fixing sintering metal lower disc (7) with lower hub (6); (6) are provided with multiple screwed hole to lower hub, on upper wheel hub (5), sintering metal, the upper opposite position of disk (2), rosette (3) and sintering metal lower disc (7) is provided with the bolt through-hole with screwed hole equal number, screw (4) through bolt through-hole, be tightened in the screwed hole of lower hub (6), on described sintering metal, the excircle place of disk (2), rosette (3) and sintering metal lower disc (7) wraps up fastening by metal anchor ear (1), and the central through hole place of described rosette (3) is provided with multiple interior concane gap;
On described sintering metal, disk (2) and sintering metal lower disc (7) adopt the sintering diamond bit of gradient pore structured design, and on sintering metal, disk (2) and the extexine of sintering metal lower disc (7) are protective layer, appearance sublevel be functional layer, again time each layer of filtering function is supporting layer;
The male half coupling step surface place of described upper wheel hub (5) is provided with sealing ring, and to disk on sintering metal (2), the faying face place with upper wheel hub (5) seals;
The male half coupling step surface place of described lower hub (6) is provided with sealing ring, and to sintering metal lower disc (7), the faying face place with lower hub (6) seals.
2. sintering metal filter disc according to claim 1, is characterized in that, described metal anchor ear (1) for two segments combined, connect with bolt and nut, be lined with compressible elastic sealing bands in described metal anchor ear (1) inner side.
3. a preparation method for sintering metal filter disc, is characterized in that, specifically carries out according to following steps:
Step 1,
Adopt powder metallurgy process preparation to have gradient pore structured sintering diamond bit, sintering diamond bit extexine is protective layer, and secondary lower floor has been the key-course of filtering function, then lower floor is supporting layer; The sintering diamond bit prepared is processed into disk on sintering metal (2) and sintering metal lower disc (7);
Step 2,
The method of Linear cut is adopted to process disk (2) and sintering metal lower disc (7) on sintering metal, on sintering metal, the center of disk (2) and sintering metal lower disc (7) is processed with manhole, with the method processing metal disk (3) of car or Linear cut, rosette (3) adopts hot rolled steel plate blank; The central through hole place of described rosette (3) is processed with several interior concane gap; Adopt the upper wheel hub (5) of method processing and the lower hub (6) of car, brill, described upper wheel hub (5) is identical with lower hub (6) structure is provided with male half coupling, the upper thread mill drilling of described lower hub (6), the upper opposite position processing bolt via hole of disk (2), rosette (3) and sintering metal lower disc (7) on described upper wheel hub (5), sintering metal, the position degree of screwed hole and bolt through-hole is not more than 0.2mm;
Step 3,
Disk on sintering metal (2), sintering metal lower disc (7) and rosette (3) are smoothed, flatness is not more than 0.5 mm;
Step 4,
With heating furnace, disk on sintering metal (2), sintering metal lower disc (7) and rosette (3) are heated, heating-up temperature 50 DEG C ~ 200 DEG C, temperature retention time 0.5 h ~ 3.5h;
Step 5,
Fast disk (2), sintering metal lower disc (7) and rosette (3) on the sintering metal heated are put into about one clipping assembling jig to assemble, holder power is 100 N ~ 5000N;
Then assemble, concrete assembling mode is, disk (2) on sintering metal is placed in the upside of rosette (3), sintering metal lower disc (7) is placed in the downside of rosette (3), on sintering metal, the upper end of disk (2) is middle arranges wheel hub (5), and on the male half coupling insertion sintering metal of upper wheel hub (5) lower end, the manhole of disk (2) is interior with the relative position of disk (2) on fixing sintering metal with upper wheel hub (5); Arrange lower hub (6) in the middle of the lower end of described sintering metal lower disc (7), the manhole that lower hub (6) upper end male half coupling inserts sintering metal lower disc (7) is interior with the relative position of fixing sintering metal lower disc (7) with lower hub (6); Described upper wheel hub (5) is provided with sealing ring with the male half coupling step surface place of lower hub (6); Screw (4) through the bolt through-hole on disk (2), rosette (3) and sintering metal lower disc (7) on upper wheel hub (5), sintering metal, be tightened in the screwed hole of lower hub (6); On described sintering metal, the excircle place of disk (2), rosette (3) and sintering metal lower disc (7) wraps up fastening by metal anchor ear (1); Metal anchor ear (1) for two segments combined, with bolt and nut connect, metal anchor ear (1) inner side be lined with compressible elastic sealing bands;
Step 6,
Carry out static balance test by guide tracked static balance test device to the filter disc assembled, amount of unbalance is less than permissible value;
Step 7,
On sintering metal, the binding face place perfusion curing type sealant of disk (2), sintering metal lower disc (7) and upper wheel hub (5), lower hub (6), metal anchor ear (1), namely obtains.
4. the preparation method of sintering metal filter disc according to claim 3, it is characterized in that, in described step 1, the type preparing sintering diamond bit is sintering metal powder, sintered metal mesh, felt-metal or compound sintering diamond bit, and filtering accuracy is 1 μm ~ 100 μm; Described sintering metal powder, compound sintering diamond bit adopt successively spraying process preparation, and described sintered metal mesh, felt-metal adopt the legal preparation of hierarchical layer stacked group.
5. the preparation method of sintering metal filter disc according to claim 3, it is characterized in that, wherein, on described sintering metal, the external diameter of disk (2), sintering metal lower disc (7), rosette (3) is identical, on described sintering metal, the outside diameter d of disk (2) and sintering metal lower disc (7) is 100mm ~ 3000mm, thickness δ is 0.5mm ~ 15mm, and described rosette (3) outside diameter d is 100mm ~ 3000mm, thickness deltat is 3 mm ~ 50mm.
Priority Applications (1)
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|---|---|---|---|---|
| CN201333339Y (en) * | 2008-12-23 | 2009-10-28 | 合肥天工科技开发有限公司 | Split-type filter disc |
| JP4462967B2 (en) * | 2004-03-11 | 2010-05-12 | 日立粉末冶金株式会社 | Method for producing soft magnetic member by powder metallurgy |
| CN202173834U (en) * | 2010-07-09 | 2012-03-28 | 贝卡尔特公司 | Disc-shaped filter element and filter component comprising same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4462967B2 (en) * | 2004-03-11 | 2010-05-12 | 日立粉末冶金株式会社 | Method for producing soft magnetic member by powder metallurgy |
| CN201333339Y (en) * | 2008-12-23 | 2009-10-28 | 合肥天工科技开发有限公司 | Split-type filter disc |
| CN202173834U (en) * | 2010-07-09 | 2012-03-28 | 贝卡尔特公司 | Disc-shaped filter element and filter component comprising same |
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| Title |
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| JP特许第4462967号B2 2010.05.12 * |
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