CN106145968A - A kind of preparation method of silicon titanium carbon ceramics nozzle - Google Patents
A kind of preparation method of silicon titanium carbon ceramics nozzle Download PDFInfo
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Abstract
The present invention relates to the preparation method of a kind of silicon titanium carbon ceramics nozzle, form by optimizing the raw material of silicon titanium carbon ceramics nozzle, use silicon titanium toner body and corundum as main material, with Al Ti alloyed powder, phenolic resin, four boron monoxides and carborundum as adjuvant, simultaneously, in preparation process, use size abrading-ball mixing and ball milling, sucking filtration molding, and use pre-burning water quenching technology, improve the physical and chemical performance of prepared product, prepared ceramic nozzle Heat stability is good, anti-pressure ability is strong, corrosion-resistant and the most easy to crack.
Description
Technical field
The invention belongs to refractory ceramic nozzle field, particularly to the preparation method of a kind of silicon titanium carbon ceramics nozzle.
Background technology
Nozzle is a variety of sprays, spraying, oil spout, parts, even a critical piece the most crucial in abrasive blast equipment.
Nozzle is widely used in all trades and professions such as machinery, oil, chemical industry, automobile, boats and ships, Aero-Space, metallurgy, coal, is that surface is strong
Critical component in the plant equipment such as change, surface clean, surface spraying, surface modification, abrasive jet cutting, water jet cutting it
One.Nozzle can support the use with various dry types or efficiency wet type sand blasting machine, compressed air shotblasting machine, cutting machine, with compressed air or liquid as power,
By spray tip by abrasive material high velocity jet to piece surface, reach the purpose that surface processes.The range of nozzle is almost contained
Covering all Mechanical Manufacturing Enterprises, its demand is huge.Almost all of Engineering Machinery Plant is required for using sandblasting or shot blasting equipment
Carrying out surface process, various plant equipment, pipeline etc., before spraying paint, need surface is carried out sandblasting or bead；Oil row
The various pipelines of industry need to be carried out with sandblasting；The industrially developed country such as Japan, when cutting steel, use the cutting of abrasive blasting material,
Use nozzle in a large number.The main uses of nozzle is as follows.1) surface preparation: plating, sprayed surface are carried out pre-place by sandblasting
Reason, is greatly improved coating and coating adhesion.2) surface peening and surface modification: by surface of the work is carried out at sandblasting
Reason, can improve metal skin hardness and fatigue life.3) removing surface: use blasting treatment, can be to cast member, press forging, punching
Descale and the burrs such as casting die, weldment, heat treatment part, steel rolling part, old parts, antirust coat；To large area object (such as packaging
Case, steel plate, boats and ships, stone material) removing surface rust cleaning；Degerming to edible mould, kitchen tools, vessel etc. and clean；To in various parts
Outer oil removing, eliminate rust and polishing etc.；To the cleanings such as rubber pattern, plastic mold, glass molds processed, metal pattern and polishing.
The preparation of ceramic nozzle is also the emphasis of research now, as CN102674815A discloses a kind of aluminium oxide ceramics spray
Mouth material and preparation method thereof.Alumina ceramic nozzle material is prepared by following steps: by sodium carboxymethyl cellulose solution
Add in α-Al2O3 ceramic powder, mix homogeneously, add polyvinyl alcohol, prepare premix material；Premix material is sieved and is added after pelletize
Glycerol is lubricated process；The premix material granule that lubricated is crossed is 70～100 DEG C of heating；Two-way mould pressing process is used to premix
Material granule die is molded, prepares biscuit, is sintered afterwards, prepares Alumina ceramic nozzle material.The oxidation that the present invention provides
The preparation technology of aluminum ceramic nozzle material is simple, and yield rate is high, cheap, uses the aluminum oxide ceramic nozzle that the present invention provides
The Alumina ceramic nozzle material that material preparation method prepares can be 1500 DEG C of uses, and intensity is high, and Heat stability is good is resistance under high temperature
Corrosion, nozzle material superior performance；Except the ceramic nozzle of aluminium oxide, the also ceramic nozzle of zirconium oxide class, as
CN101564935 discloses the manufacture method of zirconia ceramics nozzle used for spinning spray printing, and it relates to the manufacture method of ceramic nozzle.
It solve that the nozzle of existing method manufacture exists complex process, production cost is high, it is complicated to produce three dimensional structure and
Nozzle that duct is little and product corrosion-resistant, the problem worn no resistance.Method: during one, zirconia ceramics powder puts into mixing roll
Heating, is subsequently adding binding agent mixing, obtains feeding after pelletize；Two, micro injection molding is carried out during feeding is placed in micro injection molding machine
After must inject base；Three, injection base is placed in defat and presintering in thermal debinding furnace, obtains blank after furnace cooling；Four, blank is placed in burning
Heat preservation sintering in freezing of a furnace, ground, polishing after i.e. obtain zirconia ceramics nozzle used for spinning spray printing.The weaving spray manufactured in the present invention
Print uses zirconia ceramics nozzle, has good corrosion resistance and wearability, and the duct of nozzle is little, a diameter of 0.2～1.0mm,
Can prepare the nozzle that three dimensional structure is complicated, manufacture method is simple, low cost.Although preparing now the method for ceramic nozzle relatively
Many, type is the most more, but is as the demand of new and high technology, and the requirement for the various performances of ceramic nozzle is more and more higher,
Especially await improving in performances such as high temperature resistant and cracking resistances.
Present invention mainly solves technical problem is that: for the deficiencies in the prior art, the system of a kind of silicon titanium carbon ceramics nozzle
Preparation Method, forms by optimizing the raw material of silicon titanium carbon ceramics nozzle, and employing silicon titanium toner body and corundum are as main material, with Al-
Ti alloyed powder, phenolic resin, four boron monoxides and carborundum are adjuvant, meanwhile, in preparation process, use size abrading-ball mixing ball
Mill, sucking filtration molding, and use pre-burning water quenching technology, improve the physical and chemical performance of prepared product, prepared ceramic nozzle heat
Good stability, anti-pressure ability is strong, corrosion-resistant and the most easy to crack.
Summary of the invention
It is an object of the invention to, for the problems referred to above, develop the preparation method of a kind of silicon titanium carbon ceramics nozzle.
A kind of preparation method of silicon titanium carbon ceramics nozzle,
Including following preparation process:
Preparing nozzle raw material, the raw material of this nozzle consists of: silicon titanium toner body 30-40 part；Corundum 30-40 part；Al-Ti closes
Bronze 1-7 part；Phenolic resin 1-3 part；Four boron monoxide 1-3 parts；Carborundum 1-3 part；
Raw material is put into ball milling 24h in ball grinding cylinder, and rotational speed of ball-mill is 100r/min, and abrading-ball is YG8 hard alloy, including
Two kinds of abrading-balls of 6mm and 12mm, the ratio of size abrading-ball is 3:1；During ball milling, ratio of grinding media to material is 20:1；Ball-milling medium is deionized water；
Slurry after ball milling is poured in the stainless steel mould that surrounding is with holes, stand 1-2h, use vacuum filtration subsequently, row
Moisture removal, then carries out hydrostatic profile, and briquetting pressure is 10-20MPa；
Base substrate being put into vacuum drying oven be dried, baking temperature is 80-120 DEG C, and drying time is 2-6h；
By base substrate pre-burning at 700-900 DEG C, carrying out shrend subsequently, quickly put in water by base substrate, the time is 20-60s；
Base substrate after processing is dried 10-20h under field conditions (factors), puts into kiln and burns till, and firing temperature is
1800-1950 DEG C, firing time is 4-6 hour；Furnace cooling, can obtain silicon titanium carbon ceramics nozzle.
As preferably, the raw material of this nozzle consists of: silicon titanium toner body 35 parts；35 parts of corundum；Al-Ti alloyed powder 5 parts；Phenol
Urea formaldehyde 2 parts；Four boron monoxides 2 parts；Carborundum 2 parts.
As preferably, step 3) in briquetting pressure be 15MPa.
As preferably, step 5) it is dried 15h under field conditions (factors) for the base substrate after processing, put into kiln and burn
Becoming, firing temperature is 1900 DEG C, and firing time is 5 hours.
As preferably, silicon titanium toner body, granularity is 0.1-2 μm, and purity is more than 99.9%；The grain graininess of corundum is 1-2 μ
M, alumina content is more than 99wt%；Al-Ti alloyed powder, granularity≤0.088mm, Al content is more than 50wt%；Phenolic resin, residual
Charcoal amount is 55wt%.
Beneficial effects of the present invention:
Generally speaking, by optimizing the composition of ceramic nozzle, improve the heat stability of ceramic nozzle, anti-pressure ability, resistance to
Corrosivity, the performance such as wear-resisting and the most easy to crack；On the basis of traditional raw material based on corundum, select to be mainly composed of
Silicon titanium toner body is as primary raw material, in conjunction with conventional corundum raw material, forms silicon titanium carbon ceramics nozzle；Silicon titanium toner body is stratiform
Structure, has preferable toughness；The addition of Al-Ti alloyed powder, on the one hand it optimize the low temperature serviceability of ceramic nozzle, improve
The service life of ceramic nozzle and security reliability, at a sintering temperature, aluminum titanium alloy powder will melt, along with fusing produces
Substantial amounts of heat, on the one hand brings the temperature of system to raise, aggravation oxidation, improves the antioxygenic property of system；Meanwhile, aluminum titanium alloy
Protective layer can also be formed in the surrounding of the silicon titanium carbon of primary raw material, thus improve heat stability and the fire resistance of ceramic nozzle
Energy.Four boron monoxides are novel ceramic nozzle raw materials, and this four boron monoxides material, as toughness reinforcing phase, improves the microcosmic knot of ceramic nozzle
Structure, the performance such as erosion-wear-resisting.And carborundum is as sintering aid, phenolic resin is as bonding agent；
And for preparation technology, the present invention, on the basis of traditional preparation technology, optimizes preparation technology, by fully
The inherent strain eliminating product, reduce its thermal coefficient of expansion, overall preparation technology is simple, but for optimizing the performance of product
But great raising is produced.In ball-milling technology, use small one and large one two kinds of Alloy Balls In Millings, owing to the hardness of silicon titanium carbon is higher,
It is extremely difficult to the ball milling mix homogeneously of overall material system by common ball milling, and by using two kinds of abrading-balls, is possible not only to
The raw material making various different-grain diameter can be the most levigate, also makes its granularity the most homogeneous, the mixed performance of raw material slurry
More preferably；During pressed compact, the present invention optimizes employing vacuum filtration wet method pressed compact, is not only integrated with filtration and pressed compact technique, also
The utilization rate making raw material is improved；Meanwhile, after pre-burning, carry out shrend, can further discharge sintered body
Stress, improve the wear-resisting pressure performance of ceramic nozzle, and the most easy to crack.
The simple environmental protection of preparation technology of the present invention, can industrializing implementation.
The bending strength of the ceramic nozzle of the present invention is more than 600MPa, and hardness is more than 30GPa, and fracture toughness is more than
5.23MPa·m1/2；
Detailed description of the invention
Below in conjunction with specific embodiment, and with reference to data, the present invention is described in further detail.Should be understood that these embodiments
The present invention solely for the purpose of illustration, rather than limit the scope of the present invention by any way.
Embodiment 1:
A kind of preparation method of silicon titanium carbon ceramics nozzle,
Including following preparation process:
Preparing nozzle raw material, the raw material of this nozzle consists of: silicon titanium toner body 35 parts；35 parts of corundum；Al-Ti alloyed powder 5
Part；2 parts of phenolic resin；Four boron monoxides 2 parts；Carborundum 2 parts；
Raw material is put into ball milling 24h in ball grinding cylinder, and rotational speed of ball-mill is 100r/min, and abrading-ball is YG8 hard alloy, including
Two kinds of abrading-balls of 6mm and 12mm, the ratio of size abrading-ball is 3:1；During ball milling, ratio of grinding media to material is 20:1；Ball-milling medium is deionized water；
Slurry after ball milling is poured in the stainless steel mould that surrounding is with holes, stand 1h, use vacuum filtration subsequently, get rid of
Moisture, then carries out hydrostatic profile, and briquetting pressure is 15MPa；
Base substrate being put into vacuum drying oven be dried, baking temperature is 1000 DEG C, and drying time is 4h；
By base substrate pre-burning at 800 DEG C, carrying out shrend subsequently, quickly put in water by base substrate, the time is 50s；
Base substrate after processing is dried 15h under field conditions (factors), puts into kiln and burns till, and firing temperature is 1900
DEG C, firing time is 5 hours；Furnace cooling, can obtain silicon titanium carbon ceramics nozzle.
Silicon titanium toner body, granularity is 0.1-2 μm, and purity is more than 99.9%；The grain graininess of corundum is 1-2 μm, aluminium oxide
Content is more than 99wt%；Al-Ti alloyed powder, granularity≤0.088mm, Al content is more than 50wt%；Phenolic resin, carbon left is
55wt%.
Embodiment 2:
A kind of preparation method of silicon titanium carbon ceramics nozzle,
Including following preparation process:
Preparing nozzle raw material, the raw material of this nozzle consists of: silicon titanium toner body 30 parts；30 parts of corundum；Al-Ti alloyed powder 5
Part；3 parts of phenolic resin；Four boron monoxides 2 parts；Carborundum 3 parts；
Raw material is put into ball milling 24h in ball grinding cylinder, and rotational speed of ball-mill is 100r/min, and abrading-ball is YG8 hard alloy, including
Two kinds of abrading-balls of 6mm and 12mm, the ratio of size abrading-ball is 3:1；During ball milling, ratio of grinding media to material is 20:1；Ball-milling medium is deionized water；
Slurry after ball milling is poured in the stainless steel mould that surrounding is with holes, stand 1h, use vacuum filtration subsequently, get rid of
Moisture, then carries out hydrostatic profile, and briquetting pressure is 15MPa；
Base substrate being put into vacuum drying oven be dried, baking temperature is 1000 DEG C, and drying time is 4h；
By base substrate pre-burning at 800 DEG C, carrying out shrend subsequently, quickly put in water by base substrate, the time is 50s；
Base substrate after processing is dried 15h under field conditions (factors), puts into kiln and burns till, and firing temperature is 1950
DEG C, firing time is 5 hours；Furnace cooling, can obtain silicon titanium carbon ceramics nozzle.
Silicon titanium toner body, granularity is 0.1-2 μm, and purity is more than 99.9%；The grain graininess of corundum is 1-2 μm, aluminium oxide
Content is more than 99wt%；Al-Ti alloyed powder, granularity≤0.088mm, Al content is more than 50wt%；Phenolic resin, carbon left is
55wt%.
Embodiment 3:
A kind of preparation method of silicon titanium carbon ceramics nozzle,
Including following preparation process:
Preparing nozzle raw material, the raw material of this nozzle consists of: silicon titanium toner body 40 parts；40 parts of corundum；Al-Ti alloyed powder 7
Part；7 parts of phenolic resin；Four boron monoxides 1 part；Carborundum 1 part；
Raw material is put into ball milling 24h in ball grinding cylinder, and rotational speed of ball-mill is 100r/min, and abrading-ball is YG8 hard alloy, including
Two kinds of abrading-balls of 6mm and 12mm, the ratio of size abrading-ball is 3:1；During ball milling, ratio of grinding media to material is 20:1；Ball-milling medium is deionized water；
Slurry after ball milling is poured in the stainless steel mould that surrounding is with holes, stand 1h, use vacuum filtration subsequently, get rid of
Moisture, then carries out hydrostatic profile, and briquetting pressure is 15MPa；
Base substrate being put into vacuum drying oven be dried, baking temperature is 1000 DEG C, and drying time is 4h；
By base substrate pre-burning at 800 DEG C, carrying out shrend subsequently, quickly put in water by base substrate, the time is 50s；
Base substrate after processing is dried 15h under field conditions (factors), puts into kiln and burns till, and firing temperature is 1900
DEG C, firing time is 5 hours；Furnace cooling, can obtain silicon titanium carbon ceramics nozzle.
Silicon titanium toner body, granularity is 0.1-2 μm, and purity is more than 99.9%；The grain graininess of corundum is 1-2 μm, aluminium oxide
Content is more than 99wt%；Al-Ti alloyed powder, granularity≤0.088mm, Al content is more than 50wt%；Phenolic resin, carbon left is
55wt%.
Embodiment 4:
A kind of preparation method of silicon titanium carbon ceramics nozzle,
Including following preparation process:
Preparing nozzle raw material, the raw material of this nozzle consists of: silicon titanium toner body 30 parts；30 parts of corundum；Al-Ti alloyed powder 1
Part；1 part of phenolic resin；Four boron monoxides 1 part；Carborundum 1 part；
Raw material is put into ball milling 24h in ball grinding cylinder, and rotational speed of ball-mill is 100r/min, and abrading-ball is YG8 hard alloy, including
Two kinds of abrading-balls of 6mm and 12mm, the ratio of size abrading-ball is 3:1；During ball milling, ratio of grinding media to material is 20:1；Ball-milling medium is deionized water；
Slurry after ball milling is poured in the stainless steel mould that surrounding is with holes, stand 1h, use vacuum filtration subsequently, get rid of
Moisture, then carries out hydrostatic profile, and briquetting pressure is 15MPa；
Base substrate being put into vacuum drying oven be dried, baking temperature is 1000 DEG C, and drying time is 4h；
By base substrate pre-burning at 700 DEG C, carrying out shrend subsequently, quickly put in water by base substrate, the time is 50s；
Base substrate after processing is dried 15h under field conditions (factors), puts into kiln and burns till, and firing temperature is 1900
DEG C, firing time is 5 hours；Furnace cooling, can obtain silicon titanium carbon ceramics nozzle.
Silicon titanium toner body, granularity is 0.1-2 μm, and purity is more than 99.9%；The grain graininess of corundum is 1-2 μm, aluminium oxide
Content is more than 99wt%；Al-Ti alloyed powder, granularity≤0.088mm, Al content is more than 50wt%；Phenolic resin, carbon left is
55wt%.
Comparative example 1:
A kind of preparation method of silicon titanium carbon ceramics nozzle,
Including following preparation process:
Preparing nozzle raw material, the raw material of this nozzle consists of: silicon titanium toner body 35 parts；35 parts of corundum；2 parts of phenolic resin；
Four boron monoxides 2 parts；Carborundum 2 parts；
Raw material is put into ball milling 24h in ball grinding cylinder, and rotational speed of ball-mill is 100r/min, and abrading-ball is YG8 hard alloy, including
Two kinds of abrading-balls of 6mm and 12mm, the ratio of size abrading-ball is 3:1；During ball milling, ratio of grinding media to material is 20:1；Ball-milling medium is deionized water；
Slurry after ball milling is poured in the stainless steel mould that surrounding is with holes, stand 1h, use vacuum filtration subsequently, get rid of
Moisture, then carries out hydrostatic profile, and briquetting pressure is 15MPa；
Base substrate being put into vacuum drying oven be dried, baking temperature is 1000 DEG C, and drying time is 4h；
By base substrate pre-burning at 800 DEG C, carrying out shrend subsequently, quickly put in water by base substrate, the time is 50s；
Base substrate after processing is dried 15h under field conditions (factors), puts into kiln and burns till, and firing temperature is 1900
DEG C, firing time is 5 hours；Furnace cooling, can obtain silicon titanium carbon ceramics nozzle.
Silicon titanium toner body, granularity is 0.1-2 μm, and purity is more than 99.9%；The grain graininess of corundum is 1-2 μm, aluminium oxide
Content is more than 99wt%；Al-Ti alloyed powder, granularity≤0.088mm, Al content is more than 50wt%；Phenolic resin, carbon left is
55wt%.
Comparative example 2:
A kind of preparation method of silicon titanium carbon ceramics nozzle,
Including following preparation process:
Preparing nozzle raw material, the raw material of this nozzle consists of: silicon titanium toner body 35 parts；35 parts of corundum；Al-Ti alloyed powder 5
Part；2 parts of phenolic resin；Four boron monoxides 2 parts；Carborundum 2 parts；
Raw material is put into ball milling 24h in ball grinding cylinder, and rotational speed of ball-mill is 100r/min, and abrading-ball is YG8 hard alloy, for 6mm
Abrading-ball, ratio of grinding media to material is 20:1；Ball-milling medium is deionized water；
Slurry after ball milling is poured in the stainless steel mould that surrounding is with holes, stand 1h, use vacuum filtration subsequently, get rid of
Moisture, then carries out hydrostatic profile, and briquetting pressure is 15MPa；
Base substrate being put into vacuum drying oven be dried, baking temperature is 1000 DEG C, and drying time is 4h；
By base substrate pre-burning at 800 DEG C, carrying out shrend subsequently, quickly put in water by base substrate, the time is 50s；
Base substrate after processing is dried 15h under field conditions (factors), puts into kiln and burns till, and firing temperature is 1900
DEG C, firing time is 5 hours；Furnace cooling, can obtain silicon titanium carbon ceramics nozzle.
Silicon titanium toner body, granularity is 0.1-2 μm, and purity is more than 99.9%；The grain graininess of corundum is 1-2 μm, aluminium oxide
Content is more than 99wt%；Al-Ti alloyed powder, granularity≤0.088mm, Al content is more than 50wt%；Phenolic resin, carbon left is
55wt%.
Comparative example 3:
A kind of preparation method of silicon titanium carbon ceramics nozzle,
Including following preparation process:
Preparing nozzle raw material, the raw material of this nozzle consists of: silicon titanium toner body 35 parts；35 parts of corundum；Al-Ti alloyed powder 5
Part；2 parts of phenolic resin；Four boron monoxides 2 parts；Carborundum 2 parts；
Raw material is put into ball milling 24h in ball grinding cylinder, and rotational speed of ball-mill is 100r/min, and abrading-ball is YG8 hard alloy, including
Two kinds of abrading-balls of 6mm and 12mm, the ratio of size abrading-ball is 3:1；During ball milling, ratio of grinding media to material is 20:1；Ball-milling medium is deionized water；
Slurry after ball milling is poured in the stainless steel mould that surrounding is with holes, stand 1h, use vacuum filtration subsequently, get rid of
Moisture, then carries out hydrostatic profile, and briquetting pressure is 15MPa；
Base substrate being put into vacuum drying oven be dried, baking temperature is 1000 DEG C, and drying time is 4h；
By base substrate pre-burning at 800 DEG C；
Base substrate after processing is dried 15h under field conditions (factors), puts into kiln and burns till, and firing temperature is 1900
DEG C, firing time is 5 hours；Furnace cooling, can obtain silicon titanium carbon ceramics nozzle.
Silicon titanium toner body, granularity is 0.1-2 μm, and purity is more than 99.9%；The grain graininess of corundum is 1-2 μm, aluminium oxide
Content is more than 99wt%；Al-Ti alloyed powder, granularity≤0.088mm, Al content is more than 50wt%；Phenolic resin, carbon left is
55wt%.
The physical and chemical performance of the embodiment of the present invention and comparative example is as follows:
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of the spirit or essential attributes of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter
From the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all by fall in the implication of equivalency and scope of claim
Change is included in the present invention.
Although moreover, it will be appreciated that this specification is been described by according to embodiment, but the most each embodiment only wraps
Containing an independent technical scheme, this narrating mode of description is only that for clarity sake those skilled in the art should
Description can also be formed those skilled in the art through appropriately combined as an entirety, the technical scheme in each embodiment
May be appreciated other embodiments.
Claims (5)
1. the preparation method of a silicon titanium carbon ceramics nozzle, it is characterised in that:
Including following preparation process:
1) preparing nozzle raw material, the raw material of this nozzle consists of: silicon titanium toner body 30-40 part；Corundum 30-40 part；Al-Ti alloy
Powder 1-7 part；Phenolic resin 1-3 part；Four boron monoxide 1-3 parts；Carborundum 1-3 part；
2) raw material being put into ball milling 24h in ball grinding cylinder, rotational speed of ball-mill is 100r/min, and abrading-ball is YG8 hard alloy, including 6mm
With two kinds of abrading-balls of 12mm, the ratio of size abrading-ball is 3:1；During ball milling, ratio of grinding media to material is 20: 1；Ball-milling medium is deionized water；
3) slurry after ball milling is poured in the stainless steel mould that surrounding is with holes, stand 1-2h, use vacuum filtration subsequently, get rid of
Moisture, then carries out hydrostatic profile, and briquetting pressure is 10-20MPa；
4) base substrate being put into vacuum drying oven be dried, baking temperature is 80-120 DEG C, and drying time is 2-6h；
5) by base substrate pre-burning at 700-900 DEG C, carrying out shrend subsequently, quickly put in water by base substrate, the time is 20-60s；
6) base substrate after processing is dried 10-20h under field conditions (factors), puts into kiln and burns till, and firing temperature is 1800-
1950 DEG C, firing time is 4-6 hour；Furnace cooling, can obtain silicon titanium carbon ceramics nozzle.
2. the preparation method of a silicon titanium carbon ceramics nozzle as claimed in claim 2, it is characterised in that the raw material group of this nozzle
Become: silicon titanium toner body 35 parts；35 parts of corundum；Al-Ti alloyed powder 5 parts；2 parts of phenolic resin；Four boron monoxides 2 parts；Carborundum 2
Part.
3. the preparation method of a silicon titanium carbon ceramics nozzle as claimed in claim 1 or 2, it is characterised in that step 3) in
Briquetting pressure is 15MPa.
4. the preparation method of a silicon titanium carbon ceramics nozzle as claimed in claim 1, it is characterised in that step 5) for processing
After base substrate be dried 15h under field conditions (factors), put into kiln and burn till, firing temperature is 1900 DEG C, and firing time is 5 little
Time.
5. the preparation method of a silicon titanium carbon ceramics nozzle as claimed in claim 1 or 2, it is characterised in that silicon titanium toner body,
Granularity is 0.1-2 μm, and purity is more than 99.9%；The grain graininess of corundum is 1-2 μm, and alumina content is more than 99wt%；Al-Ti
Alloyed powder, granularity≤0.088mm, Al content is more than 50wt%；Phenolic resin, carbon left is 55wt%.
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