CN106431412A - High-strength wear-resistant sintered silicon carbide pump shaft and production method thereof - Google Patents
High-strength wear-resistant sintered silicon carbide pump shaft and production method thereof Download PDFInfo
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- CN106431412A CN106431412A CN201610863141.5A CN201610863141A CN106431412A CN 106431412 A CN106431412 A CN 106431412A CN 201610863141 A CN201610863141 A CN 201610863141A CN 106431412 A CN106431412 A CN 106431412A
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62695—Granulation or pelletising
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/64—Burning or sintering processes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3251—Niobium oxides, niobates, tantalum oxides, tantalates, or oxide-forming salts thereof
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/48—Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins
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- C—CHEMISTRY; METALLURGY
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/66—Specific sintering techniques, e.g. centrifugal sintering
- C04B2235/661—Multi-step sintering
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/20—Oxide or non-oxide ceramics
- F05D2300/22—Non-oxide ceramics
- F05D2300/226—Carbides
- F05D2300/2261—Carbides of silicon
Abstract
The invention discloses a high-strength wear-resistant sintered silicon carbide pump shaft and a production method thereof; the production method comprises: 1) mixing silicon carbide, a plasticizer, water-soluble resin, a release agent, tantalum pentoxide, diatomite, ferrocene and cyclodextrin to obtain a mixture; 2) mixing the mixture with water, and spray-granulating to obtain sprayed material; 3) pressing the sprayed material in a die to obtain a pump shaft blank, and performing first calcination and cooling to obtain a semi-finished pump shaft, and performing second calcination and cooling on the semi-finished pump shaft to obtain the high-strength wear-resistant sintered silicon carbide pump shaft; the sprayed material has a water content of 0.8-1.5% by weight; the first calcination at least satisfies the conditions: calcining temperature of 120-150 DEG C, and calcining time of 2-4 h; the second calcination at least satisfies the conditions: calcining temperature of 2200-2250 DEG C and calcining time of 9-15 h. The pump shaft produced by using the method has excellent mechanical strength and wear resistance.
Description
Technical field
The present invention relates to pump shaft, in particular it relates to a kind of high intensity wear-resistant sintered silicon carbon pump shaft and preparation method thereof.
Background technology
Pump shaft is the important component part in pump, Main Function be transmission power, support impeller be just maintained at working position amount
Often operating.One end of pump shaft is connected with motor reel by shaft coupling, and the other end carries impeller and rotates, general pump shaft
On equipped with the parts such as bearing, axial seal.
Owing to pump shaft is used for transmitting power, and High Rotation Speed, in the pump of the non-corrosiveness media such as conveying clear water, typically use
45# steel making, and carry out modifier treatment.In the pump of the weak erosive media such as conveying salting liquid, pump shaft material is 40#Cr,
And modifier treatment.In anticorrosion pump, i.e. the pump for the strong corrosive media such as transport acid, alkali, pump shaft material is generally
The stainless steels such as lCr18N19lCr18Ni9Ti.Although above-mentioned pump shaft disclosure satisfy that production and the job requirement of major part pump, but
Being in the pump running up, often there is insufficient strength and the inadequate defect of abrasion resistance properties in existing pump shaft pump.
Content of the invention
It is an object of the invention to provide a kind of high intensity wear-resistant sintered silicon carbon pump shaft and preparation method thereof, pass through the party
The carborundum pump shaft that method prepares has excellent mechanical strength and abrasion resistance properties, and this preparation method operation is simple, former
Material is easy to get.
To achieve these goals, the invention provides the preparation side of a kind of high intensity wear-resistant sintered silicon carbon pump shaft
Method, including：
1）Carborundum, plasticizer, water-soluble resin, releasing agent, tantalum pentoxide, diatomite, ferrocene are mixed with cyclodextrin
With prepared compound；
2）Compound is mixed with water, then carries out mist projection granulating with prepared atomization material；
3）Atomization material is placed in pump shaft mould and carries out suppressing with prepared pump shaft base, then carry out roasting for the first time, cooling to make
Obtain semi-finished product pump shaft, then semi-finished product pump shaft is carried out second time roasting, cooling with prepared high intensity wear-resistant sintered silicon carbon
Pump shaft；
Wherein, the water content of atomization material is 0.8-1.5 weight %, and roasting for the first time at least meets following condition：Sintering temperature is
120-150 DEG C, roasting time is 2-4h, and roasting for the second time at least meets following condition：Sintering temperature is 2200-2250 DEG C, roasting
The burning time is 9-15h.
Present invention also offers a kind of high intensity wear-resistant sintered silicon carbon pump shaft, it is characterised in that this high-strength abrasion-proof
Damage sintered silicon carbon pump shaft to be prepared by above-mentioned method.
By technique scheme, the preparation method that the present invention provides is by the collaborative work between each step and each raw material
With the carborundum pump shaft making to prepare, there is excellent mechanical strength and abrasion resistance properties, and this preparation method operation letter
Single, raw material is easy to get.
Other features and advantages of the present invention will be described in detail in detailed description of the invention part subsequently.
Detailed description of the invention
Hereinafter the detailed description of the invention of the present invention is described in detail.It should be appreciated that described herein specifically
Embodiment is merely to illustrate and explains the present invention, is not limited to the present invention.
The invention provides the preparation method of a kind of high intensity wear-resistant sintered silicon carbon pump shaft, including：
1）Carborundum, plasticizer, water-soluble resin, releasing agent, tantalum pentoxide, diatomite, ferrocene are mixed with cyclodextrin
With prepared compound；
2）Compound is mixed with water, then carries out mist projection granulating with prepared atomization material；
3）Atomization material is placed in pump shaft mould and carries out suppressing with prepared pump shaft base, then carry out roasting for the first time, cooling to make
Obtain semi-finished product pump shaft, then semi-finished product pump shaft is carried out second time roasting, cooling with prepared high intensity wear-resistant sintered silicon carbon
Pump shaft；
Wherein, the water content of atomization material is 0.8-1.5 weight %, and roasting for the first time at least meets following condition：Sintering temperature is
120-150 DEG C, roasting time is 2-4h, and roasting for the second time at least meets following condition：Sintering temperature is 2200-2250 DEG C, roasting
The burning time is 9-15h.
Step 1 in the present invention）In, the consumption of each material can select in wide scope, but so for preparing
Carborundum pump shaft there is more excellent mechanical strength and anti-wear performance, it is preferable that in step 1）In, relative to 85-90 weight
The carborundum of part, the consumption of plasticizer is 5-7 weight portion, and the consumption of water-soluble resin is 3-4 weight portion, and the consumption of releasing agent is
4-7 weight portion, the consumption of tantalum pentoxide is 1-1.6 weight portion, and diatomaceous consumption is 8-11 weight portion, the consumption of ferrocene
For 3-3.8 weight portion, the consumption of cyclodextrin is 2.2-3 weight portion.
Step 1 in the present invention）In, hybrid mode can select in wide scope, but so that between material
Mixing more uniformly so that make the carborundum pump shaft preparing have more excellent mechanical strength and anti-wear performance, it is preferable that
In step 1）In, it is preferable that in step 1）In, mixing is carried out by way of stirring, and the rotating speed stirring is 40-60r/
Min, the time of stirring is 15-30h；
Step 1 in the present invention）In, the particle diameter of carborundum can select in wide scope, but so that the carbon preparing
SiClx pump shaft has more excellent mechanical strength and anti-wear performance, it is preferable that in step 1）In, the particle diameter of carborundum is 1-5 μm.
Step 1 in the present invention）In, the weight average molecular weight of water-soluble resin can select in wide scope, but is
The carborundum pump shaft preparing is made to have more excellent mechanical strength and anti-wear performance, it is preferable that the weight average of water-soluble resin
Molecular weight is 3000-8000.
Step 1 in the present invention）In, the concrete species of plasticizer can select in wide scope, but so that
The carborundum pump shaft preparing has more excellent mechanical strength and anti-wear performance, it is preferable that in step 1）In, plasticizer is selected from phosphorus
One in acid esters compound, polyol ester compounds, phthalic acid ester compounds and citric acid ester type compound or
Multiple.
Step 1 in the present invention）In, the concrete species of water-soluble resin can select in wide scope, but in order to
The carborundum pump shaft preparing is made to have more excellent mechanical strength and anti-wear performance, it is preferable that water-soluble resin is selected from poly-second
One or more in enol, melamine resin, PEO, polyacrylic acid and polyurethanes.
Step 1 in the present invention）In, the concrete species of releasing agent can select in wide scope, but so that
Prepare carborundum pump shaft there is more excellent mechanical strength and anti-wear performance, it is preferable that releasing agent selected from silicone oil, talcum powder,
One or more of white clay, paraffin, mica and Tissuemat E.
Step 2 in the present invention）In, the consumption of each material can select in wide scope, but so for preparing
Carborundum pump shaft there is more excellent mechanical strength and anti-wear performance, it is preferable that in step 2）In, the weight of compound and water
Ratio is 100：140-145.
Step 2 in the present invention）In, the actual conditions of mist projection granulating can select in wide scope, but in order to make
The carborundum pump shaft that must prepare has more excellent mechanical strength and anti-wear performance, it is preferable that in step 2）In, mist projection granulating is extremely
Meet following condition less：Inlet temperature is 200-240 DEG C, and outlet temperature is 80-100 DEG C；Further, the product after outlet passes through two
Layer screen cloth carries out sieve and takes, and the mesh number of upper sieve is 70-90 mesh, and the mesh number of lower screen is 230-250 mesh, take in the middle of two layer screen
Grain is atomization material.
Step 3 in the present invention）In, the actual conditions of compacting can select in wide scope, but so that system
The carborundum pump shaft obtaining has more excellent mechanical strength and anti-wear performance, it is preferable that in step 3）In, compacting at least meet with
Lower condition：Pressing pressure is 180-220MPa, and the press time is 30-50min.
Step 3 in the present invention）In, the actual conditions of cooling can select in wide scope for the first time, but in order to
The carborundum pump shaft preparing is made to have more excellent mechanical strength and anti-wear performance, it is preferable that in step 3）In, semi-finished product pump
Before axle shaping be cooled to nature cooling and the temperature of semi-finished product pump shaft is 15-35 DEG C.
Step 3 in the present invention）In, the actual conditions of second time cooling can select in wide scope, but in order to
The carborundum pump shaft preparing is made to have more excellent mechanical strength and anti-wear performance, it is preferable that in step 3）In, second time roasting
After burning be cooled to nature cooling and cooling time be 20-24h.
Present invention also offers a kind of high intensity wear-resistant sintered silicon carbon pump shaft, it is characterised in that this high-strength abrasion-proof
Damage sintered silicon carbon pump shaft to be prepared by above-mentioned method.
Hereinafter will be described the present invention by embodiment.
Embodiment 1
1）By carborundum that particle diameter is 3 μm, plasticizer（Trimethyl phosphate）, weight average molecular weight be 5000 water-soluble resin（Poly-
Vinyl alcohol）, releasing agent（Silicone oil）, tantalum pentoxide, diatomite, ferrocene and cyclodextrin be according to 88：6：3.5：5：1.4：10：
3.4：2.6 weight than filling, then according to the rotating speed stirring 20h of 50r/min with prepared compound；
2）By compound with water according to 100：The weight of 142, than mixing, then carries out mist projection granulating（Inlet temperature is 220 DEG C, goes out
Mouth temperature is 90 DEG C；Further, the product after outlet carries out sieve by two-layer screen cloth and takes, and the mesh number of upper sieve is 80 mesh, lower screen
Mesh number be 240 mesh, finally take the particle in the middle of two layer screen）With prepared atomization material（Water content is 1.0 weight %）；
3）Atomization material is placed in pump shaft mould carry out under 200MPa compacting 40min with prepared pump shaft base, then at 140 DEG C
For the first time roasting 3h, naturally cool to 25 DEG C with prepared semi-finished product pump shaft, then by semi-finished product pump shaft in 2230 DEG C second time roasting
Burn 12h, naturally cool down 22h with prepared high intensity wear-resistant sintered silicon carbon pump shaft A1.
Embodiment 2
1）By carborundum that particle diameter is 1 μm, plasticizer（Triacetyl glycerine）, weight average molecular weight be 3000 water-soluble resin
（Melamine resin）, releasing agent（White clay）, tantalum pentoxide, diatomite, ferrocene and cyclodextrin be according to 85：5：3：
4：1：8：3：The weight of 2.2 stirs 15h with prepared compound than filling, the rotating speed then according to 40r/min；
2）By compound with water according to 100：The weight of 140, than mixing, then carries out mist projection granulating（Inlet temperature is 200 DEG C, goes out
Mouth temperature is 80 DEG C；Further, the product after outlet carries out sieve by two-layer screen cloth and takes, and the mesh number of upper sieve is 70 mesh, lower screen
Mesh number be 230 mesh, finally take the particle in the middle of two layer screen）With prepared atomization material（Water content is 0.8 weight %）；
3）Atomization material is placed in pump shaft mould carry out under 180MPa compacting 30min with prepared pump shaft base, then successively in 120
At DEG C for the first time roasting 2h, naturally cool to 15 DEG C with prepared semi-finished product pump shaft, then by semi-finished product pump shaft in 2200 DEG C second
Secondary roasting 9h, naturally cooling 20h are with prepared high intensity wear-resistant sintered silicon carbon pump shaft A2.
Embodiment 3
1）By carborundum that particle diameter is 5 μm, plasticizer triethyl citrate）, weight average molecular weight be 8000 water-soluble resin（Poly-
Carbamate）, releasing agent（Tissuemat E）, tantalum pentoxide, diatomite, ferrocene and cyclodextrin be according to 90：7：4：7：
1.6：11：3.8：The weight of 3 stirs 30h with prepared compound than filling, the rotating speed then according to 60r/min；
2）By compound with water according to 100：The weight of 145, than mixing, then carries out mist projection granulating（Inlet temperature is 240 DEG C, goes out
Mouth temperature is 100 DEG C；Further, the product after outlet carries out sieve by two-layer screen cloth and takes, and the mesh number of upper sieve is 90 mesh, lower screen
Mesh number be 250 mesh, finally take the particle in the middle of two layer screen）With prepared atomization material（Water content is 1.5 weight %）；
3）Atomization material is placed in pump shaft mould carry out under 220MPa compacting 50min with prepared pump shaft base, then successively in 150
At DEG C for the first time roasting 4h, naturally cool to 35 DEG C with prepared semi-finished product pump shaft, then by semi-finished product pump shaft in 2250 DEG C second
Secondary roasting 15h, naturally cooling 24h are with prepared high intensity wear-resistant sintered silicon carbon pump shaft A3.
Comparative example 1
Carry out preparing pump shaft B1 according to the method for embodiment, except that, step 1）In, do not use tantalum pentoxide.
Comparative example 2
Carry out preparing pump shaft B2 according to the method for embodiment, except that, step 1）In, do not use diatomite.
Comparative example 3
Carry out preparing pump shaft B3 according to the method for embodiment, except that, step 1）In, do not use ferrocene.
Comparative example 4
Carry out preparing pump shaft B4 according to the method for embodiment, except that, step 1）In, do not use cyclodextrin.
Comparative example 5
Carry out preparing pump shaft B5 according to the method for embodiment, except that, step 2）In do not carry out mist projection granulating, but use
The mode of extrusion cold cut granulation.
Comparative example 6
Carry out preparing pump shaft B6 according to the method for embodiment, except that, step 2）In do not carry out for the first time roasting.
Detection example 1
Detect Morse hardness, the compression strength of above-mentioned pump shaft（GPa）, bending strength（MPa）, and fracture toughness（MPa·m1 /2）, concrete outcome is shown in Table 1.
Table 1
| Morse hardness | Compression strength（GPa） | Bending strength（MPa） | Fracture toughness（MPa·m1/2） | |
| A1 | 9.5 | 4.9 | 575 | 4.2 |
| A2 | 9.4 | 5.0 | 580 | 4.0 |
| A3 | 9.6 | 5.1 | 577 | 4.1 |
| B1 | 9.3 | 4.1 | 504 | 3.3 |
| B2 | 9.1 | 4.0 | 512 | 3.2 |
| B3 | 9.2 | 3.9 | 508 | 3.6 |
| B4 | 9.2 | 4.1 | 513 | 3.4 |
| B5 | 9.3 | 4.0 | 520 | 3.0 |
| B6 | 8.8 | 3.8 | 498 | 2.9 |
By the compression strength in upper table, bending strength and fracture toughness it can be seen that the pump shaft that the present invention provides has excellent
By Morse hardness, different mechanical strength, can be seen that the pump shaft that the present invention provides has excellent wearability simultaneously.
The preferred embodiment of the present invention described in detail above, but, the present invention is not limited in above-mentioned embodiment
Detail, in the technology concept of the present invention, multiple simple variant can be carried out to technical scheme, this
A little simple variant belong to protection scope of the present invention.
It is further to note that each the concrete technical characteristic described in above-mentioned detailed description of the invention, at not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to various can
The combination of energy no longer illustrates separately.
Additionally, also can be combined between the various different embodiment of the present invention, as long as it is without prejudice to this
The thought of invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. the preparation method of a high intensity wear-resistant sintered silicon carbon pump shaft, it is characterised in that include：
1）Carborundum, plasticizer, water-soluble resin, releasing agent, tantalum pentoxide, diatomite, ferrocene are mixed with cyclodextrin
With prepared compound；
2）Described compound is mixed with water, then carries out mist projection granulating with prepared atomization material；
3）It is placed in described atomization material in pump shaft mould and carries out suppressing with prepared pump shaft base, then carry out roasting for the first time, cooling
With prepared semi-finished product pump shaft, then described semi-finished product pump shaft is carried out second time roasting, cooling to prepare described high-strength abrasion-proof
Damage sintered silicon carbon pump shaft；
Wherein, the water content of described atomization material is 0.8-1.5 weight %, and described first time roasting at least meets following condition：Roasting
Temperature is 120-150 DEG C, and roasting time is 2-4h, and described second time roasting at least meets following condition：Sintering temperature is 2200-
2250 DEG C, roasting time is 9-15h.
2. preparation method according to claim 1, wherein, in step 1）In, relative to the described carbonization of 85-90 weight portion
Silicon, the consumption of described plasticizer is 5-7 weight portion, and the consumption of described water-soluble resin is 3-4 weight portion, the use of described releasing agent
Amount is 4-7 weight portion, and the consumption of described tantalum pentoxide is 1-1.6 weight portion, and described diatomaceous consumption is 8-11 weight portion,
The consumption of described ferrocene is 3-3.8 weight portion, and the consumption of described cyclodextrin is 2.2-3 weight portion.
3. preparation method according to claim 2, wherein, in step 1）In, it is preferable that in step 1）In, described mixing
Carrying out by way of stirring, and the rotating speed stirring being 40-60r/min, the time of stirring is 15-30h；
It is highly preferred that in step 1）In, the particle diameter of described carborundum is 1-5 μm；
It is further preferred that the weight average molecular weight of described water-soluble resin is 3000-8000.
4. preparation method according to claim 2, wherein, in step 1）In, described plasticizer is selected from phosphoric acid ester chemical combination
One or more in thing, polyol ester compounds, phthalic acid ester compounds and citric acid ester type compound；
Preferably, described water-soluble resin selected from polyvinyl alcohol, melamine resin, PEO, polyacrylic acid and
One or more in polyurethanes；
It is highly preferred that described releasing agent is selected from the one or many of silicone oil, talcum powder, white clay, paraffin, mica and Tissuemat E
Kind.
5. the preparation method according to any one in claim 1-4, wherein, in step 2）In, described compound and water
Weight ratio be 100：140-145.
6. preparation method according to claim 5, wherein, in step 2）In, described mist projection granulating at least meets following bar
Part：Inlet temperature is 200-240 DEG C, and outlet temperature is 80-100 DEG C；Further, the product after outlet is sieved by two-layer screen cloth
Taking, the mesh number of upper sieve is 70-90 mesh, and the mesh number of lower screen is 230-250 mesh, and taking the particle in the middle of two layer screen is atomization material.
7. the preparation method according to claim 5 or 6, wherein, in step 3）In, described compacting at least meets following bar
Part：Pressing pressure is 180-220MPa, and the press time is 30-50min.
8. preparation method according to claim 7, wherein, in step 3）In, the cooling before the shaping of described semi-finished product pump shaft
Temperature for cooling and described semi-finished product pump shaft naturally is 15-35 DEG C.
9. preparation method according to claim 8, wherein, in step 3）In, being cooled to after described second time roasting
Naturally the time of cooling and cooling is 20-24h.
10. a high intensity wear-resistant sintered silicon carbon pump shaft, it is characterised in that described high intensity wear-resistant sintered silicon carbon pump
Axle is prepared by the method described in any one in claim 1-9.
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