CN106631030A - High-strength anticorrosive anti-abrasion silicon carbide sealing element and processing method thereof - Google Patents
High-strength anticorrosive anti-abrasion silicon carbide sealing element and processing method thereof Download PDFInfo
- Publication number
- CN106631030A CN106631030A CN201710044982.8A CN201710044982A CN106631030A CN 106631030 A CN106631030 A CN 106631030A CN 201710044982 A CN201710044982 A CN 201710044982A CN 106631030 A CN106631030 A CN 106631030A
- Authority
- CN
- China
- Prior art keywords
- processing method
- seal
- weight portions
- consumption
- powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3213—Strontium oxides or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2235/3258—Tungsten oxides, tungstates, or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2235/3409—Boron oxide, borates, boric acids, or oxide forming salts thereof, e.g. borax
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2235/40—Metallic constituents or additives not added as binding phase
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2235/40—Metallic constituents or additives not added as binding phase
- C04B2235/404—Refractory metals
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Sealing Material Composition (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a high-strength anticorrosive anti-abrasion silicon carbide sealing element and a processing method thereof. The processing method comprises the following steps: (1) primarily mixing silicon carbide, borax, carbon nanotubes and a coupling agent to obtain a mixture I; (2) secondarily mixing the mixture I, bentonite, samarium oxide, scheelite powder, aluminum oxide powder, zinc powder, tungsten powder, strontium carbonate, butadiene styrene rubber and water, then grinding, and atomizing and granulating to obtain an atomized material; and (3) placing the atomized material in a sealing element mold, pressing to obtain a sealing element blank, then performing primary roasting and cooling to obtain a semi-finished product sealing element, and performing secondary rotating and cooling for the semi-finished product sealing element to obtain the high-strength anticorrosive anti-abrasion silicon carbide sealing element. The silicon carbide sealing element prepared by virtue of the method has excellent mechanical performance, abrasion resistance and corrosion resistance. The processing method has the advantages of simple procedures and easiness in operation.
Description
Technical field
The present invention relates to carborundum seal, in particular it relates to high-strength corrosion-resistant wearable silicon nitride seal and its add
Work method.
Background technology
Pump seal is the important component part in pump, primarily serves the effect of sealing.Due to the particularity of pump, seal
Not only there is excellent sealing property, while also requiring excellent mechanical property.Except general pump, chemical pump is further related to, changed
Work pump (stainless steel) is widely used in the departments such as oil, chemical industry, metallurgy, synthetic fibers, pharmacy, food, synthetic fibers to be used for
Conveying corrosive medium, in this pump, seal is also needed to excellent decay resistance；But existing pump seal is difficult
To have excellent mechanical property, wear resistance and corrosion resistance simultaneously.
The content of the invention
It is an object of the invention to provide a kind of high-strength corrosion-resistant wearable silicon nitride seal and its processing method, by this
Carborundum seal has excellent mechanical property, wear resistance and corrosion resistance obtained in method, while processing method has
Operation is simple, it is easy to the advantage of operation.
To achieve these goals, the invention provides a kind of processing side of high-strength corrosion-resistant wearable silicon nitride seal
Method, including：
1) carborundum, borax, CNT and coupling agent are carried out preliminary mixing mixture I is obtained；
2) by mixture I, bentonite, samarium oxide, scheelite powder, alumina powder, zinc powder, tungsten powder, strontium carbonate, butadiene-styrene rubber
Carry out secondary mixing with water, be then ground, mist projection granulating be obtained atomization expect；
3) atomization material is placed in seal mold and is suppressed that seal base is obtained, then carry out first time roasting,
Then semi-finished product seal is carried out second roasting, cooling so that the anti-corruption of high intensity is obtained by cooling so that semi-finished product seal is obtained
Erosion wearable silicon nitride seal；
Wherein, relative to the carborundum of 100 weight portions, the consumption of borax is 3-7 weight portions, and the consumption of CNT is
0.5-2.5 weight portions, the consumption of coupling agent is 5-12 weight portions, and bentonitic consumption is 150-200 weight portions, the use of samarium oxide
Measure as 15-22 weight portions, the consumption of scheelite powder is 30-47 weight portions, and the consumption of alumina powder is 9-18 weight portions, zinc powder
Consumption is 4-10 weight portions, and the consumption of tungsten powder is 1.5-3 weight portions, and the consumption of strontium carbonate is 10-16 weight portions, butadiene-styrene rubber
Consumption is 25-29 weight portions.
Present invention also offers a kind of high-strength corrosion-resistant wearable silicon nitride seal, the wear-resisting carbonization of the high-strength corrosion-resistant
Silicon seal is prepared by above-mentioned processing method.
In above-mentioned technical proposal, the processing method that the present invention is provided is made by the synergy of each raw material and each step
Obtained carborundum seal has excellent mechanical property, wear resistance and corrosion resistance, while processing method has operation
Simply, it is easy to the advantage of operation.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Specific embodiment
The specific embodiment of the present invention is described in detail below.It should be appreciated that described herein concrete
Embodiment is merely to illustrate and explains the present invention, is not limited to the present invention.
The invention provides a kind of processing method of high-strength corrosion-resistant wearable silicon nitride seal, including：
1) carborundum, borax, CNT and coupling agent are carried out preliminary mixing mixture I is obtained；
2) by mixture I, bentonite, samarium oxide, scheelite powder, alumina powder, zinc powder, tungsten powder, strontium carbonate, butadiene-styrene rubber
Carry out secondary mixing with water, be then ground, mist projection granulating be obtained atomization expect；
3) atomization material is placed in seal mold and is suppressed that seal base is obtained, then carry out first time roasting,
Then semi-finished product seal is carried out second roasting, cooling so that the anti-corruption of high intensity is obtained by cooling so that semi-finished product seal is obtained
Erosion wearable silicon nitride seal；
Wherein, relative to the carborundum of 100 weight portions, the consumption of borax is 3-7 weight portions, and the consumption of CNT is
0.5-2.5 weight portions, the consumption of coupling agent is 5-12 weight portions, and bentonitic consumption is 150-200 weight portions, the use of samarium oxide
Measure as 15-22 weight portions, the consumption of scheelite powder is 30-47 weight portions, and the consumption of alumina powder is 9-18 weight portions, zinc powder
Consumption is 4-10 weight portions, and the consumption of tungsten powder is 1.5-3 weight portions, and the consumption of strontium carbonate is 10-16 weight portions, butadiene-styrene rubber
Consumption is 25-29 weight portions.
In above-mentioned processing method, the consumption of water can be selected in wide scope, but in order that obtained carborundum
Seal has more excellent mechanical property, wear resistance and corrosion resistance, it is preferable that relative to the carborundum of 100 weight portions,
The consumption of water is 300-500 weight portions.
1 the step of above-mentioned processing method) in, the actual conditions of preliminary mixing can be selected in wide scope, but
In order that obtained carborundum seal has more excellent mechanical property, wear resistance and corrosion resistance, it is preferable that in step
1) in, preliminary mixing at least meets following condition：Mixing temperature is 15-35 DEG C, and incorporation time is 2-4h.
1 the step of above-mentioned processing method) in, the concrete species of coupling agent can be selected in wide scope, but be
Make obtained carborundum seal that there is more excellent mechanical property, wear resistance and corrosion resistance, it is preferable that in step 1)
In, coupling agent is selected from least one of coupling agent KH550, coupling agent KH560, coupling agent KH570 and coupling agent KH792.
2 the step of above-mentioned processing method) in, the actual conditions of secondary mixing can be selected in wide scope, but
In order that obtained carborundum seal has more excellent mechanical property, wear resistance and corrosion resistance, it is preferable that in step
2) in, secondary mixing at least meets following condition：Mixing temperature is 45-65 DEG C, and incorporation time is 2-4h.
2 the step of above-mentioned processing method) in, the particle diameter of the solid particle in mixture after grinding can be in wide model
Enclose interior selection, but in order that obtained carborundum seal has more excellent mechanical property, wear resistance and corrosion resistance,
Preferably, in step 2) in, the particle diameter of the solid particle in mixture after grinding is 1-5 μm；Being atomized the water content expected is
1.3-1.4 weight %.
2 the step of above-mentioned processing method) in, the actual conditions of mist projection granulating can be selected in wide scope, but
In order that obtained carborundum seal has more excellent mechanical property, wear resistance and corrosion resistance, it is preferable that in step
2) in, mist projection granulating at least meets following condition：Inlet temperature is 210-230 DEG C, and outlet temperature is 110-120 DEG C；Also, go out
Product after mouthful carries out sieve and takes by two-layer screen cloth, and the mesh number of upper sieve is 80-100 mesh, and the mesh number of lower screen is 210-230
Mesh, it is atomization material to take the particle in the middle of two layer screen.
3 the step of above-mentioned processing method) in, the actual conditions of roasting can be selected in wide scope, but in order to
Make obtained carborundum seal that there is more excellent mechanical property, wear resistance and corrosion resistance, it is preferable that in step 3)
In, first time roasting at least meets following condition：Sintering temperature is 220-240 DEG C, and roasting time is 2-4h；Second roasting is extremely
Following condition is met less：Sintering temperature is 2270-2320 DEG C, and roasting time is 9-15h.
3 the step of above-mentioned processing method) in, the actual conditions of compacting can be selected in wide scope, but in order to
Make obtained carborundum seal that there is more excellent mechanical property, wear resistance and corrosion resistance, it is preferable that in step 3)
In, compacting at least meets following condition：Pressing pressure is 255-265MPa, and the press time is 60-80min.
3 the step of above-mentioned processing method) in, the actual conditions of cooling can be selected in wide scope, but in order to
Make obtained carborundum seal that there is more excellent mechanical property, wear resistance and corrosion resistance, it is preferable that semi-finished product are sealed
The temperature of natural cooling and semi-finished product seal is cooled to for 15-35 DEG C, the time of cooling is 20-24h before part shaping.
Present invention also offers a kind of high-strength corrosion-resistant wearable silicon nitride seal, the wear-resisting carbonization of the high-strength corrosion-resistant
Silicon seal is prepared by above-mentioned processing method.
Hereinafter will be described the present invention by embodiment.
Embodiment 1
1) at carborundum, borax, CNT and coupling agent (coupling agent KH550) being carried out at into 25 DEG C preliminary mixing 3h with
Prepared mixture I；
2) by mixture I, bentonite, samarium oxide, scheelite powder, alumina powder, zinc powder, tungsten powder, strontium carbonate, butadiene-styrene rubber
With water at 55 DEG C secondary mixing 3h, be then ground (particle diameter of the solid particle in mixture after grinding be 3 μm), spray
(inlet temperature is 220 DEG C, and outlet temperature is 115 DEG C for mist granulation；Also, the product after exporting carries out sieve and takes by two-layer screen cloth,
The mesh number of upper sieve is 90 mesh, and the mesh number of lower screen is 220 mesh, takes the particle in the middle of two layer screen) expect (water content so that atomization is obtained
For 1.35 weight %)；
3) atomization material is placed in seal mold and 70min is suppressed under 260MPa so that seal base is obtained, then in 230
First time roasting 3h at DEG C, 22h is cooled down so that semi-finished product seal is obtained at 25 DEG C, then by semi-finished product seal at 2300 DEG C
Second roasting 12h, cool down 22h high-strength corrosion-resistant wearable silicon nitride seal A1 is obtained at 25 DEG C；
Wherein, carborundum, borax, CNT, coupling agent, bentonite, samarium oxide, scheelite powder, alumina powder, zinc
The weight ratio of powder, tungsten powder, strontium carbonate, butadiene-styrene rubber and water is 100：5：1.5：8：180：18：37：12：8：2：13：27：400.
Embodiment 2
1) at carborundum, borax, CNT and coupling agent (coupling agent KH560) being carried out at into 15 DEG C preliminary mixing 2h with
Prepared mixture I；
2) by mixture I, bentonite, samarium oxide, scheelite powder, alumina powder, zinc powder, tungsten powder, strontium carbonate, butadiene-styrene rubber
With water at 45 DEG C secondary mixing 2h, be then ground (particle diameter of the solid particle in mixture after grinding be 1 μm), spray
(inlet temperature is 210 DEG C, and outlet temperature is 110 DEG C for mist granulation；Also, the product after exporting carries out sieve and takes by two-layer screen cloth,
The mesh number of upper sieve is 80 mesh, and the mesh number of lower screen is 210 mesh, takes the particle in the middle of two layer screen) expect (water content so that atomization is obtained
For 1.3 weight %)；
3) atomization material is placed in seal mold and 60min is suppressed under 255MPa so that seal base is obtained, then in 220
First time roasting 2h at DEG C, 20h is cooled down so that semi-finished product seal is obtained at 15 DEG C, then by semi-finished product seal at 2270 DEG C
Second roasting 9h, cool down 20h high-strength corrosion-resistant wearable silicon nitride seal A2 is obtained at 15 DEG C；
Wherein, carborundum, borax, CNT, coupling agent, bentonite, samarium oxide, scheelite powder, alumina powder, zinc
The weight ratio of powder, tungsten powder, strontium carbonate, butadiene-styrene rubber and water is 100：3：0.5：5：150：15：30：9：4：1.5：10：25：300.
Embodiment 3
1) at carborundum, borax, CNT and coupling agent (coupling agent KH792) being carried out at into 35 DEG C preliminary mixing 4h with
Prepared mixture I；
2) by mixture I, bentonite, samarium oxide, scheelite powder, alumina powder, zinc powder, tungsten powder, strontium carbonate, butadiene-styrene rubber
With water at 65 DEG C secondary mixing 4h, be then ground (particle diameter of the solid particle in mixture after grinding be 5 μm), spray
(inlet temperature is 230 DEG C, and outlet temperature is 120 DEG C for mist granulation；Also, the product after exporting carries out sieve and takes by two-layer screen cloth,
The mesh number of upper sieve is 100 mesh, and the mesh number of lower screen is 230 mesh, takes the particle in the middle of two layer screen) expect (aqueous so that atomization is obtained
Measure as 1.4 weight %)；
3) atomization material is placed in seal mold and 80min is suppressed under 265MPa so that seal base is obtained, then in 240
First time roasting 4h at DEG C, 24h is cooled down so that semi-finished product seal is obtained at 35 DEG C, then by semi-finished product seal at 2320 DEG C
Second roasting 15h, cool down 24h high-strength corrosion-resistant wearable silicon nitride seal A3 is obtained at 35 DEG C；
Wherein, carborundum, borax, CNT, coupling agent, bentonite, samarium oxide, scheelite powder, alumina powder, zinc
The weight ratio of powder, tungsten powder, strontium carbonate, butadiene-styrene rubber and water is 100：7：2.5：12：200：22：47：18：10：3：16：29：
500。
Comparative example 1
Method according to embodiment 1 is obtained carborundum seal B1, except for the difference that, step 1) in borax is not used.
Comparative example 2
Method according to embodiment 1 is obtained carborundum seal B2, except for the difference that, step 1) in CNT is not used.
Comparative example 3
Method according to embodiment 1 is obtained carborundum seal B3, except for the difference that, step 2) in samarium oxide is not used.
Comparative example 4
Method according to embodiment 1 is obtained carborundum seal B4, except for the difference that, step 2) in scheelite powder is not used.
Comparative example 5
Method according to embodiment 1 is obtained carborundum seal B5, except for the difference that, step 2) in alumina powder is not used.
Comparative example 6
Method according to embodiment 1 is obtained carborundum seal B6, except for the difference that, step 2) in zinc powder is not used.
Comparative example 7
Method according to embodiment 1 is obtained carborundum seal B7, except for the difference that, step 2) in tungsten powder is not used.
Comparative example 8
Method according to embodiment 1 is obtained carborundum seal B8, except for the difference that, step 2) in strontium carbonate is not used.
Comparative example 9
Method according to embodiment 1 is obtained carborundum seal B9, except for the difference that, step 2) in butadiene-styrene rubber is not used.
Comparative example 10
Method according to embodiment 1 is obtained carborundum seal B10, except for the difference that, carborundum, borax, CNT, idol
Connection agent, bentonite, samarium oxide, scheelite powder, alumina powder, zinc powder, tungsten powder, strontium carbonate, the weight ratio of butadiene-styrene rubber and water are
100：8：3：：8：180：18：37：12：8：2：13：27：400.
Comparative example 11
Method according to embodiment 1 is obtained carborundum seal B11, except for the difference that, carborundum, borax, CNT, idol
Connection agent, bentonite, samarium oxide, scheelite powder, alumina powder, zinc powder, tungsten powder, strontium carbonate, the weight ratio of butadiene-styrene rubber and water are
100：5：1.5：8：180：18：37：20：11：4：17：30：400.
Detection example 1
Detect Morse hardness, compression strength (GPa), bending strength (MPa) and the fracture toughness of above-mentioned seal
(MPa·m1/2), concrete outcome is shown in Table 1.
In addition, above-mentioned seal is respectively placed in the acid solution that pH is 2.0 soaking 30 days, the alkali lye that pH is 14 is then placed in
Middle immersion 30 days, then detects rate of change Δ m (weight %) of the weight of seal, wherein,
Table 1
| Morse hardness | Compression strength (GPa) | Bending strength (MPa) | Δ m (weight %) | |
| A1 | 10.2 | 6.1 | 619 | -0.03 |
| A2 | 10.3 | 6.0 | 622 | -0.02 |
| A3 | 10.4 | 5.9 | 627 | -0.02 |
| B1 | 9.8 | 4.1 | 525 | -0.95 |
| B2 | 9.9 | 4.2 | 533 | -0.82 |
| B3 | 9.7 | 4.4 | 512 | -0.79 |
| B4 | 10.0 | 4.0 | 517 | -0.80 |
| B5 | 9.5 | 4.2 | 520 | -0.77 |
| B6 | 9.4 | 4.0 | 523 | -0.65 |
| B7 | 9.6 | 4.2 | 508 | -0.67 |
| B8 | 9.7 | 4.3 | 505 | -0.72 |
| B9 | 9.9 | 3.8 | 486 | -0.59 |
| B10 | 10.1 | 4.4 | 545 | -0.80 |
| B11 | 9.9 | 4.5 | 551 | -0.79 |
The seal of present invention offer can be seen that by the compression strength in upper table, bending strength and fracture toughness
With excellent mechanical strength, while it is excellent wear-resisting to can be seen that the seal of present invention offer has by Morse hardness
Property；Also learn that the seal has excellent corrosion resistance additionally by Δ m.
The preferred embodiment of the present invention described in detail above, but, the present invention is not limited in above-mentioned embodiment
Detail, the present invention range of the technology design in, various simple variants can be carried out to technical scheme, this
A little simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy is no longer separately illustrated.
Additionally, can also be combined between a variety of embodiments of the present invention, as long as it is without prejudice to this
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (10)
1. a kind of processing method of high-strength corrosion-resistant wearable silicon nitride seal, it is characterised in that include：
1) carborundum, borax, CNT and coupling agent are carried out preliminary mixing mixture I is obtained；
2) by the mixture I, bentonite, samarium oxide, scheelite powder, alumina powder, zinc powder, tungsten powder, strontium carbonate, butadiene-styrene rubber
Carry out secondary mixing with water, be then ground, mist projection granulating be obtained atomization expect；
3) the atomization material is placed in seal mold and is suppressed that seal base is obtained, then carry out first time roasting,
Then the semi-finished product seal is carried out second roasting, cooling so that the height is obtained by cooling so that semi-finished product seal is obtained
The anticorrosive wearable silicon nitride seal of intensity；
Wherein, relative to the carborundum of 100 weight portions, the consumption of the borax is 3-7 weight portions, the CNT
Consumption is 0.5-2.5 weight portions, and the consumption of the coupling agent is 5-12 weight portions, and the bentonitic consumption is 150-200 weights
Amount part, the consumption of the samarium oxide is 15-22 weight portions, and the consumption of the scheelite powder is 30-47 weight portions, the aluminum oxide
The consumption of powder is 9-18 weight portions, and the consumption of the zinc powder is 4-10 weight portions, and the consumption of the tungsten powder is 1.5-3 weight portions,
The consumption of the strontium carbonate is 10-16 weight portions, and the consumption of the butadiene-styrene rubber is 25-29 weight portions.
2. processing method according to claim 1, wherein, relative to the carborundum of 100 weight portions, the use of the water
Measure as 300-500 weight portions.
3. processing method according to claim 1, wherein, in step 1) in, the preliminary mixing at least meets following bar
Part：Mixing temperature is 15-35 DEG C, and incorporation time is 2-4h.
4. processing method according to claim 1, wherein, in step 1) in, the coupling agent selected from coupling agent KH550,
At least one of coupling agent KH560, coupling agent KH570 and coupling agent KH792.
5. the processing method according to any one in claim 1-4, wherein, in step 2) in, it is described it is secondary mix to
Following condition is met less：Mixing temperature is 45-65 DEG C, and incorporation time is 2-4h.
6. processing method according to claim 5, wherein, in step 2) in, the solid particle in mixture after grinding
Particle diameter be 1-5 μm；The water content of the atomization material is 1.3-1.4 weight %.
7. processing method according to claim 6, wherein, in step 2) in, the mist projection granulating at least meets following bar
Part：Inlet temperature is 210-230 DEG C, and outlet temperature is 110-120 DEG C；Also, the product after exporting is carried out by two-layer screen cloth
Sieve takes, and the mesh number of upper sieve is 80-100 mesh, and the mesh number of lower screen is 210-230 mesh, and it is atomization to take the particle in the middle of two layer screen
Material.
8. the processing method according to claim 6 or 7, wherein, in step 3) in, the first time roasting at least meet with
Lower condition：Sintering temperature is 220-240 DEG C, and roasting time is 2-4h；Second roasting at least meets following condition：Roasting
Temperature is 2270-2320 DEG C, and roasting time is 9-15h.
9. processing method according to claim 8, wherein, in step 3) in, the compacting at least meets following condition：Pressure
Pressing pressure is 255-265MPa, and the press time is 60-80min；
Preferably, before semi-finished product seal shaping be cooled to natural cooling and the temperature of the semi-finished product seal is
15-35 DEG C, the time of cooling is 20-24h.
10. a kind of high-strength corrosion-resistant wearable silicon nitride seal, it is characterised in that the high-strength corrosion-resistant wearable silicon nitride
Seal is prepared by the processing method described in any one in claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710044982.8A CN106631030A (en) | 2017-01-21 | 2017-01-21 | High-strength anticorrosive anti-abrasion silicon carbide sealing element and processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710044982.8A CN106631030A (en) | 2017-01-21 | 2017-01-21 | High-strength anticorrosive anti-abrasion silicon carbide sealing element and processing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106631030A true CN106631030A (en) | 2017-05-10 |
Family
ID=58842115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710044982.8A Pending CN106631030A (en) | 2017-01-21 | 2017-01-21 | High-strength anticorrosive anti-abrasion silicon carbide sealing element and processing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106631030A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935598A (en) * | 2017-12-05 | 2018-04-20 | 郑州搜趣信息技术有限公司 | A kind of high performance thyrite low-temperature sintering method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102731094A (en) * | 2012-06-11 | 2012-10-17 | 上海德宝密封件有限公司 | Silicon carbide-nano carbon tube composite toughened sealing wearing ring and preparation method thereof |
| CN104628390A (en) * | 2015-01-28 | 2015-05-20 | 安徽省和翰光电科技有限公司 | Wear-resistant silicon carbide ceramic-based compound material and preparation method thereof |
| CN106116535A (en) * | 2016-06-22 | 2016-11-16 | 赣州艺佳兴陶瓷有限公司 | A kind of multifunctional ceramic material and preparation technology thereof |
-
2017
- 2017-01-21 CN CN201710044982.8A patent/CN106631030A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102731094A (en) * | 2012-06-11 | 2012-10-17 | 上海德宝密封件有限公司 | Silicon carbide-nano carbon tube composite toughened sealing wearing ring and preparation method thereof |
| CN104628390A (en) * | 2015-01-28 | 2015-05-20 | 安徽省和翰光电科技有限公司 | Wear-resistant silicon carbide ceramic-based compound material and preparation method thereof |
| CN106116535A (en) * | 2016-06-22 | 2016-11-16 | 赣州艺佳兴陶瓷有限公司 | A kind of multifunctional ceramic material and preparation technology thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王亚萍等: "《液压泄露防治技术》", 30 November 2012, 机械工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935598A (en) * | 2017-12-05 | 2018-04-20 | 郑州搜趣信息技术有限公司 | A kind of high performance thyrite low-temperature sintering method |
| CN107935598B (en) * | 2017-12-05 | 2021-03-19 | 山东圣诺实业有限公司 | Low-temperature sintering method of high-performance silicon carbide ceramic material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104328297B (en) | Carbon fiber reinforced aluminum matrix composite and preparation method thereof | |
| CN104550963A (en) | Method for realizing forming of titanium alloy powder by utilizing titanium hydride alloy powder | |
| CN104032251A (en) | Powder core wire as well as preparation method and application thereof | |
| CN106631030A (en) | High-strength anticorrosive anti-abrasion silicon carbide sealing element and processing method thereof | |
| CN111636024B (en) | WC-Ni-Cr/Ta composite material hard alloy and preparation method and application thereof | |
| CN104328303B (en) | Copper based powder metallurgy material and preparation method thereof | |
| CN104328366A (en) | Iron-based composite material and preparation method thereof | |
| CN107189639A (en) | A kind of stable type corrosion-resistant epoxy paint capable of coating with rust | |
| CN102965571A (en) | Powder metallurgy method for pump body of hydraulic pump | |
| CN105463283A (en) | Preparing method and application of tungsten boride thermal spraying coating material | |
| CN106747459A (en) | Anti-corrosion abrasion-resistant sintered silicon carbon seal and its processing technology | |
| CN104860267B (en) | Ultrafine hydrogenated niobium powder preparation method | |
| CN106431413A (en) | Anti-corrosion and anti-abrasion sintered silicon carbide sealing piece and preparing method thereof | |
| CN104294179B (en) | A kind of compressor balance weight and its manufacture method | |
| CN104802101B (en) | Edge grinding wheel and manufacturing method thereof | |
| CN106756160A (en) | A kind of preparation method of cermet material | |
| CN105779905A (en) | Stainless steel material for bearings and preparation method of such material | |
| CN104259284A (en) | Shell cover punching technology | |
| CN106832696A (en) | A kind of modified polytetrafluoroethylcomposite composite material and preparation method thereof and a kind of sealing system | |
| CN108018451A (en) | Al bases B is quickly prepared under a kind of low temperature4The method of C composite | |
| CN106244808A (en) | Powder vanadium-containing material reclaims the method for vanadium | |
| CN102941346B (en) | Preparation method of powder metallurgy forming of multi-way valve body | |
| CN106086667A (en) | A kind of corrosion-resistant stamping resistance bearing and preparation method thereof | |
| CN106145968A (en) | A kind of preparation method of silicon titanium carbon ceramics nozzle | |
| CN104928562A (en) | Low-chromium white cast iron and stress-removal heat treatment process thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |
|
| RJ01 | Rejection of invention patent application after publication |