CN108251865A - A kind of molten aluminum stalk and preparation method thereof - Google Patents

A kind of molten aluminum stalk and preparation method thereof Download PDF

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Publication number
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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enamel
cast iron
iron pipe
ground
tube body
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周志英
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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
    • 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
    • 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
    • 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
    • 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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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Electrochemistry (AREA)
  • Glass Compositions (AREA)

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

A kind of molten aluminum stalk and preparation method thereof
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.
CN201810036752.1A 2018-01-15 2018-01-15 A kind of molten aluminum stalk and preparation method thereof Pending CN108251865A (en)

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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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Publication number Priority date Publication date Assignee Title
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
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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