CN108251865A - A kind of molten aluminum stalk and preparation method thereof - Google Patents
A kind of molten aluminum stalk and preparation method thereof Download PDFInfo
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- CN108251865A CN108251865A CN201810036752.1A CN201810036752A CN108251865A CN 108251865 A CN108251865 A CN 108251865A CN 201810036752 A CN201810036752 A CN 201810036752A CN 108251865 A CN108251865 A CN 108251865A
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- tube body
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/04—Opacifiers, e.g. fluorides or phosphates; Pigments
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/14—Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/14—Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions
- C03C8/20—Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions containing titanium compounds; containing zirconium compounds
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
- C23D11/00—Continuous processes; Apparatus therefor
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
- C23D5/00—Coating with enamels or vitreous layers
- C23D5/02—Coating with enamels or vitreous layers by wet methods
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Abstract
The invention discloses a kind of molten aluminum stalks, and including cast iron pipe tube body and flange, one end of cast iron pipe tube body is provided with flange, and flange is integrally formed with cast iron pipe tube body;Stalk is internally provided with the filtering string bag, and the front end for filtering the string bag is provided with engaging;It is provided on the inner wall of flange with engaging corresponding annular groove;Cast iron pipe inboard wall of tube body and the equal enamel firing of outer wall surface have the enamel layer of resistance to molten aluminum corrosion;The mass component of vitreous enamel includes SiO in enamel layer2:40 55%, B2O3:8 18%, Na2O:13 18%, Al2O3:10 25%, TiO2:3 6%, CaO:2 4%, K2O:1 3%, CoO:0.1 0.3%, NiO:1 3%, Fe2O3:1 3%;Stalk in the present invention combines the corrosion resistance advantage of ceramic lift tube and the advantages of cast iron stalk high mechanical strength is not easily broken.
Description
Technical field
The present invention relates to low-voltage cast aluminum and aluminum electrolysis technology fields, and in particular to a kind of molten aluminum stalk and its preparation side
Method.
Background technology
Stalk is on aluminium alloy low pressure casting machine and one of the critical component of electrolytic aluminium, directly affects the matter of cast aluminium product
Amount and production efficiency.During work, aluminum melt (660-950 DEG C of temperature) is pressed to mould type every 3-5min out of stalk
Chamber.This working condition requirement component have high temperature resistant, anti-thermal shock, with aluminum solutions are nonwetting, good air-tightness and long-term anti-
The performances such as Thermal shock testing.
The stalk generally sold currently on the market has following several materials:Ceramic lift tube and cast iron stalk.Ceramics
Stalk excellent anti-corrosion performance is not infiltrated with aluminum solutions, but brittleness of ceramics is big, ceramic lift tube in use due to
At high operating temperatures, along with the difference of each spot temperature of pipe shaft, rupture is easy to cause, and under the action of mechanical external force,
The tendentiousness bigger of rupture, greatly influences service life, and ceramic lift tube need to be protected within specified temperatures when being interrupted and using
Temperature just can guarantee that service life does not decline;Cast iron stalk has the advantages that high mechanical strength is not easily broken, but has viscous molten aluminum
Problem, is vulnerable to the corrosion of molten aluminum, and service life is short;In addition, iron content in cast iron stalk, this stalk is dipped into for a long time
Irony corrosion can be generated in molten aluminum, the iron content in aluminum solutions is caused to increase, pollutes molten aluminum, greatly reduces the matter of aluminium casting
Amount, while irony corrosion can cause stalk to damage.
In addition, the impurity in molten aluminum enters cast-internal with molten aluminum and casting quality can be made to be substantially reduced with performance, design one
Stalk liquid of the kind containing filter device is also necessary.
Invention content
The purpose of the present invention is to provide a kind of molten aluminum stalks and preparation method thereof, are deposited to solve existing stalk
In no filter plant, mechanical strength is low, glues the problems such as molten aluminum and service life are short.
To achieve the above object, the technical scheme is that:
A kind of molten aluminum stalk, which is characterized in that the stalk includes cast iron pipe tube body and flange, the cast iron pipe
One end of tube body is provided with flange, and flange is integrally formed with cast iron pipe tube body;The stalk is internally provided with the filtering string bag, mistake
The front end of strainer pocket is provided with engaging;It is provided on the inner wall of the flange with engaging corresponding annular groove, flange periphery
It is provided with bolt hole;The bolt hole inner wall is provided with elastic sealing gasket;The cast iron pipe inboard wall of tube body and outer wall surface are warded off
Burning has the enamel layer of resistance to molten aluminum corrosion;The mass component of vitreous enamel includes SiO in the enamel layer2:40%-55%,
B2O3:8%-18%, Na2O:13%-18%, Al2O3:10%-25%, TiO2:3%-6%, CaO:2%-4%, K2O:1%-
3%, CoO:0.1%-0.3%, NiO:1%-3%, Fe2O3:1%-3%.
The thickness of the enamel layer is 0.1-0.3mm.
The cast iron pipe tube body cross section is circle.
The length of the filtering string bag is equal with cast iron pipe tube length.
The enamel layer includes ground glaze layer and cover coat, and ground glaze layer is covered on the inside and outside wall of cast iron pipe tube body, overglaze
Layer is covered on ground glaze layer.
The mass component of vitreous enamel includes SiO in the enamel layer2:42%-53%, B2O3:8%-17%, Na2O:
14%-17%, Al2O3:11%-24%, TiO2:3.5%-5.5%, CaO:2.5%-3.5%, K2O:1%-3%, CoO:
0.15%-0.25%, NiO:1.5%-2.5%, Fe2O3:1.5%-2.5%.
A kind of preparation method of molten aluminum stalk, which is characterized in that the preparation method includes:
(1) cast iron pipe tube body is prepared;
(2) cast iron pipe tube surfaces are handled:Cast iron pipe tube body surfaces externally and internally is cleaned successively, shot-peening, Shot Blasting;
(3) frit for porcelain enamel is prepared:It is according to the frit for porcelain enamel formula of mass percent meter:SiO2:40%-55%, B2O3:
8%-18%, Na2O:13%-18%, Al2O3:10%-25%, TiO2:3%-6%, CaO:2%-4%, K2O:1%-3%,
CoO:0.1%-0.3%, NiO:1%-3%, Fe2O3:1%-3% prepares rear frit for porcelain enamel as powdery, by powder enamel material
A certain amount of water is added to be diluted to form paste frit for porcelain enamel, then that paste frit for porcelain enamel is ground on ball mill to 12h is spare;
(4) application of slip frit for porcelain enamel:In the equal application of slip paste frit for porcelain enamel of cast iron pipe tube body surfaces externally and internally, it is placed on after to be dried
In enamel furnace, come out of the stove after 25-70 minutes through 720 DEG C of -920 DEG C of high temperature sinterings;
(5) it cools down:Natural cooling.
The vitreous enamel includes ground-coat enamel and overglaze, and by percentage to the quality, the ground-coat enamel includes SiO2:25%-35%,
B2O3:5%-12%,:Na2O:7%-10%, Al2O3:5%-10%, CoO:0.1%-0.3%, NiO:1%-3%, Fe2O3:
1%-3%, the overglaze include SiO2:15%-20%, B2O3:3%-6%, Na2O:6%-8%, Al2O3:5%-15%,
TiO2:3%-6%, CaO:2%-4%, K2O:1%-3%.
The sum of corresponding component content is equal to corresponding component content in vitreous enamel in the ground-coat enamel and overglaze.
The preparation method includes:
(1) cast iron pipe tube body is prepared;
(2) cast iron pipe tube surfaces are handled:Cast iron pipe tube body surfaces externally and internally is cleaned successively, shot-peening, Shot Blasting;
(3) ground-coat enamel material is prepared:Ground-coat enamel material formula in percentage by weight is:SiO2:25%-35%, B2O3:5%-
12%,:Na2O:7%-10%, Al2O3:5%-10%, CoO:0.1%-0.3%, NiO:1%-3%, Fe2O3:1%-3% matches
Ground-coat enamel material is powdery after good, and powdery ground-coat enamel material is added a certain amount of water to be diluted to form paste ground-coat enamel material, then by paste ground-coat enamel material
It is spare that 12h is ground on ball mill;
(4) glaze material is prepared:Overglaze material formula in percentage by weight is:SiO2:15%-20%, B2O3:3%-
6%, Na2O:6%-8%, Al2O3:5%-15%, TiO2:3%-6%, CaO:2%-4%, K2O:1%-3% prepares glaze below
Expect for powdery, powdery glaze material to be added a certain amount of water to be diluted to form paste glaze material, then by paste glaze material in ball mill
Upper grinding 12h is spare;
(5) application of slip ground-coat enamel material:In one layer of paste ground-coat enamel material of the equal application of slip of cast iron pipe tube body surfaces externally and internally, it is placed on after to be dried
In enamel furnace, come out of the stove after 25-70 minutes through 780 DEG C of -920 DEG C of high temperature sinterings, natural cooling;
(6) application of slip glaze material:In cast iron pipe tube body surfaces externally and internally one layer of paste glaze material of the application of slip again, placed after to be dried
In enamel furnace, come out of the stove after 25-70 minutes through 720 DEG C of -850 DEG C of high temperature sinterings;
(7) it cools down:Natural cooling.
The mode of the application of slip is dip-coating either spraying or vacuum enamelling or the dry powder application of slip or electrostatic wet-process enamelling
Either the electrostatic dry powder application of slip or electrodeposition enamelling one kind therein.
Vitreous enamel is a kind of for glass state material of the application of slip on metal mold, can securely be tied with mold after firing
It closes, there is protective effect and decoration function to green body.
Wherein, SiO2Belong to fire resistance raw material, as the base stock that decision vitreous enamel primarily forms, ensure that enamel
The features such as high temperature resistant, performance are stablized, but SiO2Content can not be excessively high, too high levels, and the fusing point of enamel is just high, firing time
Also it is longer.
Wherein, TiO2Be the strong milkiness raw material of enamel, opacifiers done with it, the vitreous enamel prepared have good gloss,
Whiteness and chemical stability and very strong covering power.
Wherein, Na2O and K2O is introduced as cosolvent, they can generate " mixed alkali effect ", can be effectively reduced
The viscosity of melt, and effectively reduce the firing temperature of enamel and improve system chemical stability.
Wherein, the adherence of ground-coat enamel can be effectively improved by CoO being added in Ground coat material of enamel glaze.
Wherein, B2O3As cosolvent, promote vitreous enamel melting.
Wherein, Al2O3It is a kind of compound of high rigidity, there is high fusing point and boiling point, added in overglaze, make preparation
Vitreous enamel have the performance of high temperature resistance.
Wherein, NiO is added in ground-coat enamel, can effectively improve the adherence of ground-coat enamel, is green powder solid, is played one
Fixed coloring effect.
Wherein, Fe2O3It is added in ground-coat enamel, the adherence of ground-coat enamel can be effectively improved.
The invention has the advantages that:
A kind of molten aluminum of the present invention is one layer of resistance to molten aluminum corrosion of enamel firing on the surface thereof using cast iron pipe as base material with stalk
Special vitreous enamel, the wellability of this layer of enamel and molten aluminum is poor, and molten aluminum is difficult this layer of enamel of corrosion, extends the use of stalk
Service life achievees the purpose that the service life length of ceramic lift tube, in addition, the stalk mechanical strength is consistent with cast iron stalk,
Cracky does not crack, without the limitation of use condition.The corrosion resistance that stalk in the present invention combines ceramic lift tube is excellent
The advantages of point and cast iron stalk high mechanical strength are not easily broken, in addition, stalk inner wall can be by molten aluminum there is provided the filtering string bag
It is filtered before into casting.The stalk is used for low-voltage cast aluminum, and molten aluminum goes out aluminium in aluminium manufacturer's aluminum electrolytic tank, and molten aluminum is sucked
Conveyed by vacuum packet etc..
Description of the drawings
Fig. 1 is a kind of sectional view of molten aluminum stalk of the present invention.
Specific embodiment
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..
Embodiment 1
A kind of molten aluminum stalk as shown in Figure 1, including cast iron pipe tube body 2 and flange 3, the cast iron pipe tube body 2
One end is provided with flange 3, and flange 3 is integrally formed with cast iron pipe tube body 2;On the top of stalk, connection adds cast iron flange 3, mould
Tool avoids the damage to stalk when being bolted with stalk;The stalk is internally provided with the filtering string bag 4, filter screen
The front end of pocket 4 is provided with engaging 401, and the design of the filtering string bag 4 can play the role of good skimming, while can also ensure aluminium
Liquid is smoothly flow in casting mold, while is filtered the string bag 4 and be positioned in stalk using dismountable form, easy to clean;Institute
It states and is provided on the inner wall of flange 3 with engaging 401 corresponding annular grooves 5,3 periphery of flange is provided with bolt hole;The spiral shell
Keyhole inner wall is provided with elastic sealing gasket, plays good sealing effect;It wards off on the 2 inner and outer wall surface of cast iron pipe tube body
Burning has the enamel layer 1 of resistance to molten aluminum corrosion, and stalk is using cast iron pipe as base material, and one layer of resistance to molten aluminum of enamel firing is rotten on the surface thereof
The wellability of the special enamel layer 1 of erosion, this layer of enamel and molten aluminum is poor, and molten aluminum is difficult this layer of enamel of corrosion, extends stalk
Service life, achieve the purpose that ceramic lift tube service life length;The mass component packet of vitreous enamel in the enamel layer
Contain SiO2:40%-55%, B2O3:8%-18%, Na2O:13%-18%, Al2O3:10%-25%, TiO2:3%-6%,
CaO:2%-4%, K2O:1%-3%, CoO:0.1%-0.3%, NiO:1%-3%, Fe2O3:1%-3%.
2 cross section of cast iron pipe tube body is circle.
The length and 2 equal length of cast iron pipe tube body of the filtering string bag 4, prevent impurity from being accumulated in stalk inner wall, adopt
With the removable filter string bag 4, the impurity in molten aluminum is attached on the filtering string bag 4, needs only to need that the string bag 4 will be filtered during cleaning
Remove cleaning of taking away.
The enamel layer 1 includes ground glaze layer and cover coat, and ground glaze layer is covered on the inside and outside wall of cast iron pipe tube body, overglaze
Layer is covered on ground glaze layer, and ground glaze layer has the property with 2 adherence of cast iron pipe tube body and cover coat fusion, the spy that cover coat contains
Different substance can assign cast iron pipe tube body corresponding performance.
Embodiment 2
A kind of molten aluminum includes cast iron pipe tube body with stalk, and cast iron pipe inboard wall of tube body and the equal enamel firing of outer wall surface have resistance to molten aluminum
The enamel layer of corrosion;The mass component of vitreous enamel in the enamel layer contains SiO2:40%, B2O3:8%, Na2O:
13%, Al2O3:23.9%, TiO2:6%, CaO:2%, K2O:1%, CoO:0.1%, NiO:3%, Fe2O3:3%.
The preparation method of the stalk includes:
(1) cast iron pipe tube body is prepared;
(2) cast iron pipe tube surfaces are handled:Cast iron pipe tube body surfaces externally and internally is cleaned successively, shot-peening, Shot Blasting;
(3) frit for porcelain enamel is prepared:It is according to the frit for porcelain enamel formula of mass percent meter:SiO2:40%, B2O3:8%,
Na2O:13%, Al2O3:23.9%, TiO2:6%, CaO:2%, K2O:1%, CoO:0.1 part of %, NiO:3%, Fe2O3:3%,
Rear frit for porcelain enamel is prepared as powdery, powder enamel material is added a certain amount of water to be diluted to form paste frit for porcelain enamel, then will paste
It is spare that shape frit for porcelain enamel grinds 12h on ball mill;
(4) application of slip frit for porcelain enamel:In the equal application of slip paste frit for porcelain enamel of cast iron pipe tube body surfaces externally and internally, it is placed on after to be dried
In enamel furnace, come out of the stove after 25-70 minutes through 720 DEG C of -920 DEG C of high temperature sinterings;
(5) it cools down:Natural cooling.
Embodiment 3
A kind of molten aluminum stalk, which is characterized in that the stalk include cast iron pipe tube body, cast iron pipe inboard wall of tube body and
The equal enamel firing of outer wall surface has the enamel layer of resistance to molten aluminum corrosion;Vitreous enamel mass component includes SiO in the enamel layer2:
41%, B2O3:18%, Na2O:13%, Al2O3:13.3%, TiO2:4.5%, CaO:3%, K2O:3%, CoO:0.2%, NiO:
2%, Fe2O3:2%.
The preparation method of the stalk includes:
(1) cast iron pipe tube body is prepared;
(2) cast iron pipe tube surfaces are handled:Cast iron pipe tube body surfaces externally and internally is cleaned successively, shot-peening, Shot Blasting;
(3) frit for porcelain enamel is prepared:It is according to the frit for porcelain enamel formula of mass percent meter:SiO2:41%, B2O3:18%,
Na2O:13%, Al2O3:13.3%, TiO2:4.5%, CaO:3%, K2O:3%, CoO:0.2%, NiO:2%, Fe2O3:2%,
Rear frit for porcelain enamel is prepared as powdery, powder enamel material is added a certain amount of water to be diluted to form paste frit for porcelain enamel, then will paste
It is spare that shape frit for porcelain enamel grinds 12h on ball mill;
(4) application of slip frit for porcelain enamel:In the equal application of slip paste frit for porcelain enamel of cast iron pipe tube body surfaces externally and internally, it is placed on after to be dried
In enamel furnace, come out of the stove after 25-70 minutes through 720 DEG C of -920 DEG C of high temperature sinterings;
(5) it cools down:Natural cooling.
Embodiment 4
A kind of molten aluminum stalk, which is characterized in that the stalk include cast iron pipe tube body, cast iron pipe inboard wall of tube body and
The equal enamel firing of outer wall surface has the enamel layer of resistance to molten aluminum corrosion;The mass component of vitreous enamel includes in the enamel layer
SiO2:53%, B2O3:9%, Na2O:17.5%, Al2O3:10%, TiO2:3.2%, CaO:4%, K2O:1%, CoO:0.3%,
NiO:1%, Fe2O3:1%.
The preparation method of the stalk includes:
(1) cast iron pipe tube body is prepared;
(2) cast iron pipe tube surfaces are handled:Cast iron pipe tube body surfaces externally and internally is cleaned successively, shot-peening, Shot Blasting;
(3) frit for porcelain enamel is prepared:It is according to the frit for porcelain enamel formula of mass percent meter:SiO2:53%, B2O3:9%,
Na2O:17.5%, Al2O3:10%, TiO2:3.2%, CaO:4%, K2O:1%, CoO:0.3%, NiO:1%, Fe2O3:1%,
Rear frit for porcelain enamel is prepared as powdery, powder enamel material is added a certain amount of water to be diluted to form paste frit for porcelain enamel, then will paste
It is spare that shape frit for porcelain enamel grinds 12h on ball mill;
(4) application of slip frit for porcelain enamel:In the equal application of slip paste frit for porcelain enamel of cast iron pipe tube body surfaces externally and internally, it is placed on after to be dried
In enamel furnace, come out of the stove after 25-70 minutes through 720 DEG C of -920 DEG C of high temperature sinterings;
(5) it cools down:Natural cooling.
Embodiment 5
A kind of molten aluminum includes cast iron pipe tube body with stalk, and cast iron pipe inboard wall of tube body and the equal enamel firing of outer wall surface have resistance to molten aluminum
The enamel layer of corrosion;Vitreous enamel mass component includes SiO in the enamel layer2:40%, B2O3:8%, Na2O:13%,
Al2O3:23.9%, TiO2:6%, CaO:2%, K2O:1%, CoO:0.1%, NiO:3%, Fe2O3:3%;The enamel layer
Including ground glaze layer and cover coat, ground-coat enamel includes SiO in the ground glaze layer2、B2O3、Na2O、Al2O3, CoO, NiO and Fe2O3, overglaze
Overglaze includes SiO in layer2、B2O3、Na2O、Al2O3、TiO2, CaO and K2O。
The preparation method of the stalk includes:
(1) cast iron pipe tube body is prepared;
(2) cast iron pipe tube surfaces are handled:Cast iron pipe tube body surfaces externally and internally is cleaned successively, shot-peening, Shot Blasting;
(3) ground-coat enamel material is prepared:It is according to the ground-coat enamel material formula of mass percent meter:SiO2:25%, B2O3:5%,:Na2O:
7%, Al2O3:9.9%, CoO:0.1%, NiO:3%, Fe2O3:3%, rear ground-coat enamel material is prepared as powdery, and powdery ground-coat enamel material is added
A certain amount of water is diluted to form paste ground-coat enamel material, then that paste ground-coat enamel material is ground 12h on ball mill is spare;
(4) glaze material is prepared:It is according to the overglaze material formula of mass percent meter:SiO2:15%, B2O3:3%, Na2O:
6%, Al2O3:14%, TiO2:6%, CaO:2%, K2O:1%, it is powdery to prepare glaze below, and powdery glaze material is added centainly
Amount water is diluted to form paste glaze material, then that paste glaze material is ground on ball mill to 12h is spare;
(5) application of slip ground-coat enamel material:In one layer of paste ground-coat enamel material of the equal application of slip of cast iron pipe tube body surfaces externally and internally, it is placed on after to be dried
In enamel furnace, come out of the stove after 25-70 minutes through 780 DEG C of -920 DEG C of high temperature sinterings, natural cooling;
(6) application of slip glaze material:In cast iron pipe tube body surfaces externally and internally one layer of paste glaze material of the application of slip again, placed after to be dried
In enamel furnace, come out of the stove after 25-70 minutes through 720 DEG C of -850 DEG C of high temperature sinterings;
(7) it cools down:Natural cooling.
Embodiment 6
A kind of molten aluminum stalk, which is characterized in that the stalk include cast iron pipe tube body, cast iron pipe inboard wall of tube body and
The equal enamel firing of outer wall surface has the enamel layer of resistance to molten aluminum corrosion;The mass component of vitreous enamel includes in the enamel layer
SiO2:41%, B2O3:18%, Na2O:13%, Al2O3:13.3%, TiO2:4.5%, CaO:3%, K2O:3%, CoO:0.2%,
NiO:2%, Fe2O3:2%;The enamel layer includes ground glaze layer and cover coat, and ground-coat enamel includes SiO in the ground glaze layer2、B2O3、
Na2O、Al2O3, CoO, NiO and Fe2O3, overglaze includes SiO in cover coat2、B2O3、Na2O、Al2O3、TiO2, CaO and K2O。
The preparation method of the stalk includes:
(1) cast iron pipe tube body is prepared;
(2) cast iron pipe tube surfaces are handled:Cast iron pipe tube body surfaces externally and internally is cleaned successively, shot-peening, Shot Blasting;
(3) ground-coat enamel material is prepared:It is according to the ground-coat enamel material formula of mass percent meter:SiO2:26%, B2O3:12%,:
Na2O:7%, Al2O3:6%, CoO:0.2%, NiO:2%, Fe2O3:2%, rear ground-coat enamel material is prepared as powdery, by powdery ground-coat enamel material
A certain amount of water is added to be diluted to form paste ground-coat enamel material, then that paste ground-coat enamel material is ground 12h on ball mill is spare;
(4) glaze material is prepared:It is according to the overglaze material formula of mass percent meter:SiO2:15%, B2O3:6%, Na2O:
6%, Al2O3:7.3%, TiO2:4.5%, CaO:3%, K2O:3%, it is powdery to prepare glaze below, and powdery glaze material is added one
Gauge water is diluted to form paste glaze material, then that paste glaze material is ground on ball mill to 12h is spare;
(5) application of slip ground-coat enamel material:In one layer of paste ground-coat enamel material of the equal application of slip of cast iron pipe tube body surfaces externally and internally, it is placed on after to be dried
In enamel furnace, come out of the stove after 25-70 minutes through 780 DEG C of -920 DEG C of high temperature sinterings, natural cooling;
(6) application of slip glaze material:In cast iron pipe tube body surfaces externally and internally one layer of paste glaze material of the application of slip again, placed after to be dried
In enamel furnace, come out of the stove after 25-70 minutes through 720 DEG C of -850 DEG C of high temperature sinterings;
(7) it cools down:Natural cooling.
Embodiment 7
A kind of molten aluminum stalk, which is characterized in that the stalk include cast iron pipe tube body, cast iron pipe inboard wall of tube body and
The equal enamel firing of outer wall surface has the enamel layer of resistance to molten aluminum corrosion;The mass component of vitreous enamel includes in the enamel layer
SiO2:53%, B2O3:9%, Na2O:17.5%, Al2O3:10%, TiO2:3.2%, CaO:4%, K2O:1%, CoO:0.3%,
NiO:1%, Fe2O3:1%;The enamel layer includes ground glaze layer and cover coat, and ground-coat enamel includes SiO in the ground glaze layer2、B2O3、
Na2O、Al2O3, CoO, NiO and Fe2O3, ground-coat enamel includes SiO in cover coat2、B2O3、Na2O、Al2O3、TiO2, CaO and K2O。
(1) cast iron pipe tube body is prepared;
(2) cast iron pipe tube surfaces are handled:Cast iron pipe tube body surfaces externally and internally is cleaned successively, shot-peening, Shot Blasting;
(3) ground-coat enamel material is prepared:It is according to the ground-coat enamel material formula of mass percent meter:SiO2:34%, B2O3:6%,:Na2O:
9.5%, Al2O3:5%, CoO:0.3%th, NiO:1%, Fe2O3:1%, rear ground-coat enamel material is prepared as powdery, and powdery ground-coat enamel material is added
A certain amount of water is diluted to form paste ground-coat enamel material, then that paste ground-coat enamel material is ground 12h on ball mill is spare;
(4) glaze material is prepared:It is according to the overglaze material formula of mass percent meter:SiO2:19%, B2O3:3%, Na2O:
8%, Al2O3:5%, TiO2:3.2%, CaO:4%, K2O:1%, it is powdery to prepare glaze below, and powdery glaze material is added centainly
Amount water is diluted to form paste glaze material, then that paste glaze material is ground on ball mill to 12h is spare;
(5) application of slip ground-coat enamel material:In one layer of paste ground-coat enamel material of the equal application of slip of cast iron pipe tube body surfaces externally and internally, it is placed on after to be dried
In enamel furnace, come out of the stove after 25-70 minutes through 780 DEG C of -920 DEG C of high temperature sinterings, natural cooling;
(6) application of slip glaze material:In cast iron pipe tube body surfaces externally and internally one layer of paste glaze material of the application of slip again, placed after to be dried
In enamel furnace, come out of the stove after 25-70 minutes through 720 DEG C of -850 DEG C of high temperature sinterings;
(7) it cools down:Natural cooling.
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention belong to the scope of protection of present invention.
Claims (10)
1. a kind of molten aluminum stalk, which is characterized in that the stalk includes cast iron pipe tube body (2) and flange (3), the casting
One end of iron pipe tube body (2) is provided with flange (3), and flange (3) is integrally formed with cast iron pipe tube body (2);Inside the stalk
The filtering string bag (4) is provided with, the front end of the filtering string bag (4) is provided with engaging (401);It is provided on the inner wall of the flange (3)
With engaging (401) corresponding annular groove (5), flange (3) periphery is provided with bolt hole;The bolt hole inner wall is provided with bullet
Property gasket;The equal enamel firing in cast iron pipe tube body (2) the inner and outer wall surface has the enamel layer (1) of resistance to molten aluminum corrosion;It is described
The mass component of vitreous enamel includes SiO in enamel layer (1)2:40%-55%, B2O3:8%-18%, Na2O:13%-
18%, Al2O3:10%-25%, TiO2:3%-6%, CaO:2%-4%, K2O:1%-3%, CoO:0.1%-0.3%, NiO:
1%-3%, Fe2O3:1%-3%.
2. a kind of molten aluminum stalk as described in claim 1, which is characterized in that the thickness of the enamel layer (1) is
0.1-0.3mm。
3. a kind of molten aluminum stalk as described in claim 1, which is characterized in that cast iron pipe tube body (2) cross section is
It is round.
4. a kind of molten aluminum stalk as described in claim 1, which is characterized in that the length of the filtering string bag (4) and casting
Iron pipe tube body (2) equal length.
5. a kind of molten aluminum stalk as described in claim 1, which is characterized in that the enamel layer (1) is including ground glaze layer
And cover coat, ground glaze layer are covered on the inside and outside wall of cast iron pipe tube body (2), cover coat is covered on ground glaze layer.
A kind of 6. molten aluminum stalk as described in claim 1, which is characterized in that the quality of vitreous enamel in the enamel layer
Ingredient includes SiO2:42%-53%, B2O3:8%-17%, Na2O:14%-17%, Al2O3:11%-24%, TiO2:
3.5%-5.5%, CaO:2.5%-3.5%, K2O:1%-3%, CoO:0.15%-0.25%, NiO:1.5%-2.5%,
Fe2O3:1.5%-2.5%.
A kind of 7. preparation method of any molten aluminum stalks of claim 1-5, which is characterized in that the preparation method packet
It includes:
(1) cast iron pipe tube body is prepared;
(2) cast iron pipe tube surfaces are handled:Cast iron pipe tube body surfaces externally and internally is cleaned successively, shot-peening, Shot Blasting;
(3) frit for porcelain enamel is prepared:It is according to the frit for porcelain enamel formula of mass percent meter:SiO2:40%-55%, B2O3:8%-
18%, Na2O:13%-18%, Al2O3:10%-25%, TiO2:3%-6%, CaO:2%-4%, K2O:1%-3%, CoO:
0.1%-0.3%, NiO:1%-3%, Fe2O3:1%-3% prepares rear frit for porcelain enamel as powdery, powder enamel material is added one
Gauge water is diluted to form paste frit for porcelain enamel, then that paste frit for porcelain enamel is ground on ball mill to 12h is spare;
(4) application of slip frit for porcelain enamel:In the equal application of slip paste frit for porcelain enamel of cast iron pipe tube body surfaces externally and internally, enamel firing is placed on after to be dried
In stove, come out of the stove after 25-70 minutes through 720 DEG C of -920 DEG C of high temperature sinterings;
(5) it cools down:Natural cooling.
8. a kind of preparation method of molten aluminum stalk as claimed in claim 7, which is characterized in that the vitreous enamel includes bottom
Glaze and overglaze, by percentage to the quality, the ground-coat enamel include SiO2:25%-35%, B2O3:5%-12%,:Na2O:7%-
10%, Al2O3:5%-10%, CoO:0.1%-0.3%, NiO:1%-3%, Fe2O3:1%-3%, the overglaze include SiO2:
15%-20%, B2O3:3%-6%, Na2O:6%-8%, Al2O3:5%-15%, TiO2:3%-6%, CaO:2%-4%,
K2O:1%-3%.
9. a kind of preparation method of molten aluminum stalk as claimed in claim 8, which is characterized in that in the ground-coat enamel and overglaze
The sum of corresponding component content is equal to corresponding component content in vitreous enamel.
A kind of 10. preparation method of molten aluminum stalk as claimed in claim 9, which is characterized in that the preparation method packet
It includes:
(1) cast iron pipe tube body is prepared;
(2) cast iron pipe tube surfaces are handled:Cast iron pipe tube body surfaces externally and internally is cleaned successively, shot-peening, Shot Blasting;
(3) ground-coat enamel material is prepared:Ground-coat enamel material formula in percentage by weight is:SiO2:25%-35%, B2O3:5%-
12%,:Na2O:7%-10%, Al2O3:5%-10%, CoO:0.1%-0.3%, NiO:1%-3%, Fe2O3:1%-3% matches
Ground-coat enamel material is powdery after good, and powdery ground-coat enamel material is added a certain amount of water to be diluted to form paste ground-coat enamel material, then by paste ground-coat enamel material
It is spare that 12h is ground on ball mill;
(4) glaze material is prepared:Overglaze material formula in percentage by weight is:SiO2:15%-20%, B2O3:3%-6%,
Na2O:6%-8%, Al2O3:5%-15%, TiO2:3%-6%, CaO:2%-4%, K2O:1%-3%, preparing glaze below is
Powdery glaze material is added a certain amount of water to be diluted to form paste glaze material, then paste glaze material is ground on ball mill by powdery
It is spare to grind 12h;
(5) application of slip ground-coat enamel material:In one layer of paste ground-coat enamel material of the equal application of slip of cast iron pipe tube body surfaces externally and internally, enamel firing is placed on after to be dried
In stove, come out of the stove after 25-70 minutes through 780 DEG C of -920 DEG C of high temperature sinterings, natural cooling;
(6) application of slip glaze material:In cast iron pipe tube body surfaces externally and internally one layer of paste glaze material of the application of slip again, it is placed on and wards off after to be dried
It burns in stove, comes out of the stove after 25-70 minutes through 720 DEG C of -850 DEG C of high temperature sinterings;
(7) it cools down:Natural cooling.
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CN110615615A (en) * | 2019-09-09 | 2019-12-27 | 广东生活环境无害化处理中心有限公司 | High and low temperature corrosion resistant enamel material, preparation method and application thereof, and high temperature boiling rotary grate furnace device |
CN113331655A (en) * | 2021-06-02 | 2021-09-03 | 赵晓彪 | Enamel vacuum cup and manufacturing method thereof |
CN113598579A (en) * | 2021-08-09 | 2021-11-05 | 赵晓彪 | Method for manufacturing enamel vacuum cup |
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CN110615615A (en) * | 2019-09-09 | 2019-12-27 | 广东生活环境无害化处理中心有限公司 | High and low temperature corrosion resistant enamel material, preparation method and application thereof, and high temperature boiling rotary grate furnace device |
CN110615615B (en) * | 2019-09-09 | 2022-04-08 | 广东生活环境无害化处理中心有限公司 | High and low temperature corrosion resistant enamel material, preparation method and application thereof, and high temperature boiling rotary grate furnace device |
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CN113598579A (en) * | 2021-08-09 | 2021-11-05 | 赵晓彪 | Method for manufacturing enamel vacuum cup |
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