CN206285620U - A kind of novel foam ceramic filter - Google Patents
A kind of novel foam ceramic filter Download PDFInfo
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- CN206285620U CN206285620U CN201621336399.1U CN201621336399U CN206285620U CN 206285620 U CN206285620 U CN 206285620U CN 201621336399 U CN201621336399 U CN 201621336399U CN 206285620 U CN206285620 U CN 206285620U
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- foamed ceramics
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Abstract
The utility model embodiment discloses a kind of novel foam ceramic filter; including three-decker; it is followed successively by pore foam ceramic layer, gross porosity foamed ceramics layer and protective layer; wherein; pore foam ceramic layer and gross porosity foamed ceramics layer are laminated structure; and be bonded together by high temperature sintering, gross porosity foamed ceramics layer is used to bear the souring of high-temperature metal potting syrup；Liquid solvent field trash in fine particle and attachment removal potting syrup that pore foam ceramic layer is used to remove in potting syrup; protective layer is covered in gross porosity foamed ceramics layer and bears on the surface that casting of metals liquid washes away; for preventing molten metal from directly impacting foamed ceramics layer; on the one hand avoid ceramic particle in gross porosity foamed ceramics layer from coming off, on the other hand further increase the thermal-shock resistance of filter.The utility model improves the easily de- slag of conventional ceramic foam filter, and access times are few, the problems such as molten metal is bonded, is effectively increased the thermal-shock resistance and service life of filter.
Description
Technical field
The utility model is related to the cleaning equipment of motlten metal, more particularly to a kind of novel foam ceramic filter.
Background technology
In Foundry Production, because casting wasted product typically constitutes from waste product sum caused by the casting flaws such as non-metallic inclusion
50%~60%.Inclusion defect not only seriously reduces the mechanical performance of casting, also produces harmful shadow to its processing characteristics and outward appearance
Ring.Various non-metallic inclusions therein can be efficiently reduced or eliminated using molten metal filtering technique, purify liquid cast
Alloy.So as to improve internal soundness, service behaviour and the machinability of casting, rate of reducing the number of rejects and seconds improves yield rate, enters
And improve economic benefit.
It is carrier that ceramic foam filter CFF (Ceramic Foam Filter) uses foamed plastics, by it be immersed in by
In the slurry that ceramic powders, binding agent etc. are made, then squeeze out additional size, make ceramic size even application in carrier framework into
It is base substrate, then base substrate is dried and is made through high-temperature roasting.CFF from the mid-1970s the U.S. come out after, because its is unique
Depth-type filtration and adsorption act on, alloy melt can be made to reach degree of purification very high, quickly by metal casting row
The extensive concern of industry.By research and probe for many years, to after the eighties, various countries have researched and developed and have manufactured various foam ceramic filter materials
Material, is widely used in the casting technique of cast steel, cast iron and non-ferrous alloy.
There is good filter effect using more ceramic filter at present, but due to needing to be connect with potting syrup for a long time
Touch and use, easily collide scaling-off, cause to corrode and damage.In the case of more serious, in actual mechanical process, due to molten metal
Influx is excessive, can damage filter, causes filter to crush and pours into casting into after potting syrup, causes casting to produce and lacks
Fall into.In these cases, although can be by changing ceramic filter in advance come solve problem, this certainly will cause single to cast
Amount is reduced, and increases machine stop times, is increased the production cost of enterprise and is caused enterprises production efficiency low.Therefore, foam pottery is improved
The corrosion resistance of porcelain filter, extends its service life and has great importance.
Utility model content
The purpose of this utility model is to provide a kind of novel foam with good thermal-shock resistance, corrosion-resistant property to make pottery
Porcelain filter, the novel foam ceramic filter can be widely applied in the precision casting process of aluminium alloy, can be with high-efficient filter
Harmful debris in except casting of metals liquid, eliminate the impurity in casting and cause defect, reduction in the numbers of seconds to improve in casting in matter
Amount.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：A kind of novel foam ceramic filter, including
Three-decker, is followed successively by pore foam ceramic layer, gross porosity foamed ceramics layer and protective layer, wherein, pore foam ceramic layer and thick
Hole foamed ceramics layer is laminated structure, and is bonded together by high temperature sintering, and gross porosity foamed ceramics layer is for bearing high temperature
The souring of casting of metals liquid；Fine particle and attachment removal potting syrup that pore foam ceramic layer is used to remove in potting syrup
In liquid solvent field trash, protective layer be covered in gross porosity foamed ceramics layer bear on the surface that casting of metals liquid washes away, be used for
Prevent molten metal from directly impacting foamed ceramics layer, on the one hand avoid ceramic particle in gross porosity foamed ceramics layer from coming off, the opposing party
Face further increases the thermal-shock resistance of filter.
Preferably, the average number of pores of the pore foam ceramic layer is 6~12ppi, the average hole of gross porosity foamed ceramics layer
Number is 18~22ppi.
Preferably, the filter gross thickness is no more than 20mm, and the wherein thickness of pore foam ceramic layer is 8~12mm,
The thickness of gross porosity foamed ceramics layer is 6~8mm, and the thickness of protective layer is 0.2~0.4mm.
Preferably, the filter is processed into cylinder, cuboid, ellipsoid or polygonal body structure as required.
Preferably, to meet needs of production, it is small that the filter is designed to the big end cross-sectional area of an end cross-sectional area
Frustum, wherein small cross-sectional area end are the pore foam ceramic layer, and heavy in section product end is the protective layer.
As can be seen from the above technical solutions, the utility model has the advantages that：
1st, the aluminium screen pack of this technique productions can be with high-efficient filter except the harmful debris in metal aluminium liquid, in elimination casting
Impurity causes defect, reduction in the numbers of seconds to improve the internal quality of casting.
2nd, conventional easily de- slag is improved, access times are few, the problems such as molten metal is bonded.
3rd, using the protective layer of the ceramic foam filter resistance to rapid heat cycle of attached last layer, the heat resistanceheat resistant of filter can be effectively increased
Impact and service life.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the utility model embodiment, below will be to being wanted needed for embodiment description
The accompanying drawing for using is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present utility model
Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the schematic diagram of the utility model embodiment one；
Fig. 2 is the schematic diagram of the utility model embodiment two.
Specific embodiment
Specific embodiment of the utility model is elaborated below in conjunction with the accompanying drawings.
Embodiment one：
As shown in figure 1, a kind of novel foam ceramic filter, including three-decker, be followed successively by pore foam ceramic layer 1,
Gross porosity foamed ceramics layer 2 and protective layer 3, the thickness of pore foam ceramic layer is 8mm, and the thickness of gross porosity foamed ceramics layer is 6mm,
The thickness of protective layer is 0.2mm.Wherein, pore foam ceramic layer 1 and gross porosity foamed ceramics layer 2 are laminated structure, and pass through
High temperature sintering is bonded together.Average number of pores in gross porosity foamed ceramics layer 2 is 18ppi, and ceramic limb is thicker, is mainly used in holding
By the souring of high-temperature metal potting syrup；The average number of pores value of pore foam ceramic layer 1 is 6ppi, for removing potting syrup in
Fine particle and attachment removal potting syrup in liquid solvent field trash, be the main undertaker of filter filtration.Protect
Sheath 3 is covered in gross porosity foamed ceramics layer 2 and bears on the surface that casting of metals liquid washes away, for further increasing gross porosity foam
The thermal-shock resistance of ceramic layer 2, improves the service life of filter.The filter is processed into cylindrical structure as required.
The preparation method of novel foam ceramic filter is as follows described in the utility model embodiment one：
1) mix various raw materials according to following mass percent and obtain mixed-powder：
Aluminum oxide 10%, potassium base waterglass 3%, vitreous silica 10%, methylcellulose 1%, sodium base waterglass 3% glues
Great soil group 5%, fluorite powder 3%, water 65%.
Said mixture is stirred, slurry is fabricated to；
2) being put into above-mentioned slurry carries out ball milling, wherein batch mixing in ball mill：Ball：The mass ratio of water is 0.5：2：1, ball milling
Time is 10min, and rotating speed is 450r/min；
3) two pieces of polyurethane foam plastics for using average number of pores to be respectively 18ppi and 6ppi are carrier, uniform saturation ground
Step 1 is inhaled in leaching) slurry that is obtained, then distinguish repeatedly two blocks of foamed plastics of multidirectional extruding so that many between foamed plastics hole
Remaining slurry discharge, the ceramic particle in slurry fully, is uniformly adsorbed on two blocks of foamed plastics, and two blocks of biscuits are obtained；
4) in average number of pores for the polyurethane foam plastics of 18ppi is protected to be smeared in a plane of biscuit obtained in carrier
Sheath forerunner's slurry, the mass percent of each component formula is in slurry：Neodymia 8%, zinc oxide 17%, cobalt oxide 0.5%,
Sodium carboxymethylcellulose 3%, remaining is aluminum fluoride, totally 100%.Biscuit is extruded after smearing, prevents protective layer forerunner's slurry from blocking
Foamed plastics hole；
5) two blocks of biscuits are put into drying box respectively, hardening is dried at 120 DEG C, drying time is 30min, remove element
Moisture in base, obtains two pieces of preliminary idiosomes with some strength；
6) do not smeared in big hole count idiosome and divide in the plane of protective layer forerunner's slurry and a plane of small hole count idiosome
Not Tu Mo saturation sodium metasilicate liquation, and two faces are brought into close contact, high temperature sintering in sintering furnace is loaded after laminating, programming rate is
150 DEG C/h, sintering temperature is 1400 DEG C, and 2.5h is incubated at a sintering temperature.Furnace cooling after the completion of sintering, that is, obtain this practicality
New described novel foam ceramic filter.
During use, ceramic foam filter is placed on the bottom of cylinder that a refractory material is made, then by cylinder
It is placed on cast gate and is poured into a mould.The placement direction of filter is correct so that in casting process, molten metal leads to successively
Overprotection layer 3, gross porosity foamed ceramics layer 2 and pore foam ceramic layer 1.
Embodiment two：
As shown in Fig. 2 a kind of novel foam ceramic filter, including three-decker, be followed successively by pore foam ceramic layer 1,
Gross porosity foamed ceramics layer 2 and protective layer 3, the thickness of pore foam ceramic layer is 11mm, and the thickness of gross porosity foamed ceramics layer is
8mm, the thickness of protective layer is 0.4mm.Wherein, pore foam ceramic layer 1 and gross porosity foamed ceramics layer 2 are laminated structure, and
It is bonded together by high temperature sintering.Average number of pores in gross porosity foamed ceramics layer 2 is 22ppi, and ceramic limb is thicker, main to use
In the souring for bearing high-temperature metal potting syrup；The average number of pores value of pore foam ceramic layer 1 is 12ppi, is poured for removing
The liquid solvent field trash in fine particle and attachment removal potting syrup in fluid injection, is that the main of filter filtration undertakes
Person.Protective layer 3 is covered in gross porosity foamed ceramics layer 2 and bears on the surface that casting of metals liquid washes away, thick for further increasing
The thermal-shock resistance of hole foamed ceramics layer 2, improves the service life of filter.The filter is processed into the frustum of a cone as required
Structure, wherein small cross-sectional area end are the pore foam ceramic layer, and heavy in section product end is the protective layer.
The preparation method of novel foam ceramic filter is as follows described in the utility model embodiment two：
1) mix various raw materials according to following mass percent and obtain mixed-powder：
Aluminum oxide 10%, potassium base waterglass 3%, vitreous silica 10%, methylcellulose 1%, sodium base waterglass 3% glues
Great soil group 5%, fluorite powder 3%, water 65%.
Said mixture is stirred, slurry is fabricated to；
2) being put into above-mentioned slurry carries out ball milling, wherein batch mixing in ball mill：Ball：The mass ratio of water is 0.5：2：1, ball milling
Time is 10min, and rotating speed is 450r/min；
3) two pieces of polyurethane foam plastics for using average number of pores to be respectively 18ppi and 6ppi are carrier, uniform saturation ground
Step 1 is inhaled in leaching) slurry that is obtained, then distinguish repeatedly two blocks of foamed plastics of multidirectional extruding so that many between foamed plastics hole
Remaining slurry discharge, the ceramic particle in slurry fully, is uniformly adsorbed on two blocks of foamed plastics, and two blocks of biscuits are obtained；
4) in average number of pores for the polyurethane foam plastics of 18ppi is protected to be smeared in a plane of biscuit obtained in carrier
Sheath forerunner's slurry, the mass percent of each component formula is in slurry：Neodymia 8%, zinc oxide 17%, cobalt oxide 0.5%,
Sodium carboxymethylcellulose 3%, remaining is aluminum fluoride, totally 100%.Biscuit is extruded after smearing, prevents protective layer forerunner's slurry from blocking
Foamed plastics hole；
5) two blocks of biscuits are put into drying box respectively, hardening is dried at 120 DEG C, drying time is 30min, remove element
Moisture in base, obtains two pieces of preliminary idiosomes with some strength；
6) do not smeared in big hole count idiosome and divide in the plane of protective layer forerunner's slurry and a plane of small hole count idiosome
Not Tu Mo saturation sodium metasilicate liquation, and two faces are brought into close contact, high temperature sintering in sintering furnace is loaded after laminating, programming rate is
150 DEG C/h, sintering temperature is 1400 DEG C, and 2.5h is incubated at a sintering temperature.Furnace cooling after the completion of sintering, that is, obtain this practicality
New described novel foam ceramic filter.
During use, ceramic foam filter is placed on the bottom of cylinder that a refractory material is made, then by cylinder
It is placed on cast gate and is poured into a mould.The placement direction of filter is correct so that in casting process, molten metal leads to successively
Overprotection layer 3, gross porosity foamed ceramics layer 2 and pore foam ceramic layer 1.
Claims (5)
1. a kind of novel foam ceramic filter, it is characterised in that including three-decker, is followed successively by pore foam ceramic layer, thick
Hole foamed ceramics layer and protective layer, wherein, pore foam ceramic layer and gross porosity foamed ceramics layer are laminated structure, and by height
Together, gross porosity foamed ceramics layer is used to bear the souring of high-temperature metal potting syrup to warm sintered bonds；Pore foam ceramics
Layer is covered in slightly for removing the liquid solvent field trash in the fine particle in potting syrup and attachment removal potting syrup, protective layer
Hole foamed ceramics layer is born on the surface that casting of metals liquid washes away, for preventing molten metal from directly impacting foamed ceramics layer, one
Aspect avoids ceramic particle in gross porosity foamed ceramics layer from coming off, and on the other hand further increases the thermal-shock resistance of filter.
2. a kind of novel foam ceramic filter according to claim 1, it is characterised in that the pore foam ceramic layer
Average number of pores be 6~12ppi, gross porosity foamed ceramics layer average number of pores be 18~22ppi.
3. a kind of novel foam ceramic filter according to claim 1, it is characterised in that the filter gross thickness is not
More than 20mm, the wherein thickness of pore foam ceramic layer is 8~12mm, and the thickness of gross porosity foamed ceramics layer is 6~8mm, protection
The thickness of layer is 0.2~0.4mm.
4. a kind of novel foam ceramic filter according to any one of claims 1 to 3, it is characterised in that the filtering
Device is processed into cylinder, cuboid, ellipsoid or polygonal body structure as required.
5. a kind of novel foam ceramic filter according to any one of claims 1 to 3, it is characterised in that be to meet real
Border production needs, and the filter is designed to the small frustum of the big end cross-sectional area of an end cross-sectional area, and wherein small cross-sectional area end is
The pore foam ceramic layer, heavy in section product end is the protective layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621336399.1U CN206285620U (en) | 2016-12-07 | 2016-12-07 | A kind of novel foam ceramic filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621336399.1U CN206285620U (en) | 2016-12-07 | 2016-12-07 | A kind of novel foam ceramic filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206285620U true CN206285620U (en) | 2017-06-30 |
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ID=59098088
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621336399.1U Active CN206285620U (en) | 2016-12-07 | 2016-12-07 | A kind of novel foam ceramic filter |
Country Status (1)
| Country | Link |
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| CN (1) | CN206285620U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117160143A (en) * | 2023-08-23 | 2023-12-05 | 苏州兴业材料科技股份有限公司 | Foam ceramic filter and preparation method thereof |
-
2016
- 2016-12-07 CN CN201621336399.1U patent/CN206285620U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117160143A (en) * | 2023-08-23 | 2023-12-05 | 苏州兴业材料科技股份有限公司 | Foam ceramic filter and preparation method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180105 Address after: 332800 Mount Lu City Industrial Park, Jiujiang, Jiangxi Patentee after: Jiangxi Jia Tao inorganic materials Co., Ltd. Address before: 332800 Xingzi County Industrial Park, Jiangxi, Jiujiang Patentee before: Xingzi Jiatao Inorganic Materials Co., Ltd. |