CN108286031A - A kind of graphite liner plate of ceramic embedded pipe and preparation method thereof - Google Patents
A kind of graphite liner plate of ceramic embedded pipe and preparation method thereof Download PDFInfo
- Publication number
- CN108286031A CN108286031A CN201810298952.4A CN201810298952A CN108286031A CN 108286031 A CN108286031 A CN 108286031A CN 201810298952 A CN201810298952 A CN 201810298952A CN 108286031 A CN108286031 A CN 108286031A
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- Prior art keywords
- graphite
- circular
- hole
- ceramic tube
- ceramic
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Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/60—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using solids, e.g. powders, pastes
- C23C8/62—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using solids, e.g. powders, pastes only one element being applied
- C23C8/64—Carburising
- C23C8/66—Carburising of ferrous surfaces
-
- 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
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium 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
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
- C04B2235/3246—Stabilised zirconias, e.g. YSZ or cerium stabilised zirconia
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a kind of graphite liner plates of ceramic embedded pipe, the graphite liner intralamellar part is equipped with the circular through hole extended vertically through, circular ring type ceramic tube is fixed in circular through hole, preparation method includes that circular through hole is drilled out on graphite cake, prepares ceramic tube and installation is inlayed；The beneficial effects of the invention are as follows：The present invention ceramic embedded pipe between graphite liner plate and bolt, bolt is set to be isolated with graphite liner plate, avoid graphite infiltration bolt surface formation carburized layer at high operating temperatures, bolt strength is caused to reduce fracture, compared with ordinary graphite interior lining panel, bolt service life of the present invention can extend 23 times, ensure that pack carburizing case being capable of long-time normal use while reducing cost.
Description
Technical field
The present invention relates to the graphite liner plates and its preparation side of the Carburization Treatment of metal more particularly to a kind of ceramic embedded pipe
Method.
Background technology
According to application demand, certain steel-castings need to carry out Carburization Treatment to its outer tissue, and pack carburizing case is to casting
Steel part carries out the common device of Carburization Treatment, and the outer layer of pack carburizing case is welded using heat-resisting steel sheet and plate, and polylith graphite cake passes through spiral shell
Bolt couples the inner lining material of formation of solid polycomplex cementing pot, and graphite liner plate has very strong heat-storing material, each heat treating castings complete
Bi Hou, the heat in graphite liner plate may further be used to heat the isotonic agent material of carburizer of processing next time, the heat in cementing pot
It is not only utilized, but also improves carburizer production efficiency, this is that such pack carburizing case has the advantage that.
920-940 DEG C of the carburizing temperature of steel-casting heat treatment, soaking time is long, in the carbon and cementing pot in graphite liner plate
Air can occur incomplete reaction, form carbon monoxide, at high temperature, carbon monoxide contacts and occurs with carbon steel bolt surface
It decomposes, forms carbon dioxide and active atoms of carbon, active atoms of carbon are absorbed into metal and are gradually diffused into its internal layer, shape again
At carburized layer.With the lasting use of pack carburizing case, the carburized layer progressive additive in carbon steel bolt, case case carbon is interior
2-3 times of layer, and there are coarse net carbides, the carbide brittleness is very big, causes carbon steel bolt to be easy to be broken, influences solid
The normal use of cementing pot uses low-carbon alloy steel bolt instead, can extend the usage time of pack carburizing case, but effect is unknown
It is aobvious, the phenomenon that using molybdenum bolt being not in then bolt carburizing, but molybdenum material is expensive, and production cost is high.
Invention content
Existing pack carburizing case graphite liner plate connection bolt is there are fracture is easy to after carburizing, if replacing other materials
Then cost is higher for the bolt of material, in view of the above-mentioned problems, the present invention provides graphite liner plate and its preparation of a kind of ceramic embedded pipe
Method.
The technical solution that the present invention solves above-mentioned technical problem is as follows：
A kind of graphite liner plate of ceramic embedded pipe, including graphite cake and ceramic tube, which is characterized in that the graphite cake is
Cuboid, the graphite cake are equipped with the circular through hole for extending vertically through opposing sides, circular ring type are fixed in the circular through hole
The ceramic tube, the ceramics pipe outside diameter are identical as the circular through hole aperture.
It counts in parts by weight, the ceramic tube is made of following components：
99.5% 8-9 parts of high purity alumina powder, yttrium stablize 1-2 parts of tetragonal phase zirconium oxide powder, 9-11 parts of alumina balls.
The long 1200mm of the graphite cake, width 500mm, thickness 40mm, the circular through hole are 2, perpendicular to long and wide composition
Plane, each circular through hole distance of center circle long side 250mm, away from nearest broadside 300mm, the circular through hole is a diameter of
60mm, length 40mm.
Further, the preparation method of the graphite liner plate of above-mentioned ceramic embedded pipe, which is characterized in that include the following steps：
1) circular through hole of certain size is drilled out on graphite cake；
2) it weighs ceramic tube each component in parts by weight, after being placed in ball mill batch mixing for 24 hours, is carried out using spray granulation
It is granulated, by particle compression molding at 15-20MPa, fires 2.5-3h postcoolings to room temperature for 1650-1680 DEG C and ceramic tube is made,
It tests, is chosen except the defective products with penetrating crackle to ceramic tube；
3) qualified ceramic tube is bumped into graphite cake through-hole, adjustment ceramic tube both ends end face is concordant with graphite cake plate face.
The beneficial effects of the invention are as follows：The present invention ceramic embedded pipe between graphite liner plate and bolt, makes bolt and stone
Black interior lining panel isolation avoids graphite infiltration bolt surface formation carburized layer at high operating temperatures, bolt strength is caused to reduce fracture,
Compared with ordinary graphite interior lining panel, bolt service life of the present invention can extend 2-3 times, ensure pack carburizing while reducing cost
Case being capable of long-time normal use.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；Each section is respectively：
1, graphite cake, 2, ceramic tube.
Specific implementation mode
Below in conjunction with example, present invention is described, and the given examples are served only to explain the present invention, is not intended to limit this
The range of invention.
Embodiment 1
A kind of graphite liner plate of ceramic embedded pipe, including graphite cake 1 and ceramic tube 2, graphite cake 1 are cuboid, graphite
Plate 1 is equipped with the circular through hole for extending vertically through opposing sides, and the ceramic tube 2 of circular ring type, 2 outer diameter of ceramic tube are fixed in circular through hole
It is identical as circular through hole aperture.
Wherein, ceramic tube 2 is made of the component of following parts by weight：99.5% 8 parts of high purity alumina powder, yttrium stablize four
1 part of square phase oxidation zirconium powder, 9 parts of alumina balls.
Embodiment 2
A kind of graphite liner plate of ceramic embedded pipe, including graphite cake 1 and ceramic tube 2, graphite cake 1 are cuboid, graphite
Plate 1 is equipped with the circular through hole for extending vertically through opposing sides, and the ceramic tube 2 of circular ring type, 2 outer diameter of ceramic tube are fixed in circular through hole
It is identical as circular through hole aperture.
Wherein, 1 long 1200mm of graphite cake, width 500mm, thickness 40mm, circular through hole are 2, perpendicular to long and wide composition
Plane, each circular through hole distance of center circle long side 250mm, away from nearest broadside 300mm, a diameter of 60mm of circular through hole, length are
40mm。
Wherein, ceramic tube 2 is made of the component of following parts by weight：99.5% 9 parts of high purity alumina powder, yttrium stablize four
2 parts of square phase oxidation zirconium powder, 11 parts of alumina balls.
The preparation method of the graphite liner plate of the ceramic embedded pipe of Examples 1 and 2, includes the following steps：
1) circular through hole of certain size is drilled out on graphite cake；
2) it weighs ceramic tube each component in parts by weight, after being placed in ball mill batch mixing for 24 hours, is carried out using spray granulation
It is granulated, by particle compression molding at 15-20MPa, fires 2.5-3h postcoolings to room temperature for 1650-1680 DEG C and ceramic tube is made,
It tests, is chosen except the defective products with penetrating crackle to ceramic tube；
3) qualified ceramic tube is bumped into graphite cake through-hole, adjustment ceramic tube both ends end face is concordant with graphite cake plate face.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of graphite liner plate of ceramic embedded pipe, including graphite cake and ceramic tube, which is characterized in that the graphite cake is length
Cube, the graphite cake are equipped with the circular through hole for extending vertically through opposing sides, the institute of circular ring type are fixed in the circular through hole
Ceramic tube is stated, the ceramics pipe outside diameter is identical as the circular through hole aperture.
2. the graphite liner plate of ceramic embedded pipe according to claim 1, which is characterized in that it counts in parts by weight, it is described
Ceramic tube is made of following components：
99.5% 8-9 parts of high purity alumina powder, yttrium stablize 1-2 parts of tetragonal phase zirconium oxide powder, 9-11 parts of alumina balls.
3. the graphite liner plate of ceramic embedded pipe according to claim 2, which is characterized in that the graphite cake is long
1200mm, width 500mm, thickness 40mm, the circular through hole are 2, each described round logical perpendicular to the plane of long and wide composition
Hole distance of center circle long side 250mm, away from nearest broadside 300mm, a diameter of 60mm of the circular through hole, length 40mm.
4. a kind of preparation method of the graphite liner plate of ceramic embedded pipe as described in any one of claims 1-3, feature exist
In including the following steps：
1) circular through hole of certain size is drilled out on graphite cake；
2) it weighs ceramic tube each component in parts by weight, after being placed in ball mill batch mixing for 24 hours, is made using spray granulation
Particle compression molding at 15-20MPa is fired 2.5-3h postcoolings to room temperature for 1650-1680 DEG C and ceramic tube is made by grain, right
Ceramic tube is tested, and is chosen except the defective products with penetrating crackle；
3) qualified ceramic tube is bumped into graphite cake through-hole, adjustment ceramic tube both ends end face is concordant with graphite cake plate face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810298952.4A CN108286031A (en) | 2018-04-04 | 2018-04-04 | A kind of graphite liner plate of ceramic embedded pipe and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810298952.4A CN108286031A (en) | 2018-04-04 | 2018-04-04 | A kind of graphite liner plate of ceramic embedded pipe and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108286031A true CN108286031A (en) | 2018-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810298952.4A Pending CN108286031A (en) | 2018-04-04 | 2018-04-04 | A kind of graphite liner plate of ceramic embedded pipe and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109306422A (en) * | 2018-12-13 | 2019-02-05 | 株洲硬质合金集团有限公司 | A kind of preparation method of molybdenum carbide-molybdenum composite material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202900952U (en) * | 2012-10-17 | 2013-04-24 | 张伟钢 | Bolt with ceramic sleeve |
| CN103641453A (en) * | 2013-11-27 | 2014-03-19 | 中国兵器工业第五二研究所烟台分所 | Toughened aluminum oxide ceramic thermal insulation piece, and preparation technology of toughened aluminum oxide ceramic thermal insulation piece, and application of toughened aluminum oxide ceramic heat piece in extruding cylinder |
| CN106830961A (en) * | 2016-12-26 | 2017-06-13 | 东莞市佳乾新材料科技有限公司 | A kind of zirconium oxide for having hole-closing structure strengthens the preparation method of alumina porous ceramic |
| CN206908880U (en) * | 2017-06-09 | 2018-01-19 | 北京国网富达科技发展有限责任公司 | A kind of dismountable silicon carbide ceramics electric heater frost protection sleeve pipe |
-
2018
- 2018-04-04 CN CN201810298952.4A patent/CN108286031A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202900952U (en) * | 2012-10-17 | 2013-04-24 | 张伟钢 | Bolt with ceramic sleeve |
| CN103641453A (en) * | 2013-11-27 | 2014-03-19 | 中国兵器工业第五二研究所烟台分所 | Toughened aluminum oxide ceramic thermal insulation piece, and preparation technology of toughened aluminum oxide ceramic thermal insulation piece, and application of toughened aluminum oxide ceramic heat piece in extruding cylinder |
| CN106830961A (en) * | 2016-12-26 | 2017-06-13 | 东莞市佳乾新材料科技有限公司 | A kind of zirconium oxide for having hole-closing structure strengthens the preparation method of alumina porous ceramic |
| CN206908880U (en) * | 2017-06-09 | 2018-01-19 | 北京国网富达科技发展有限责任公司 | A kind of dismountable silicon carbide ceramics electric heater frost protection sleeve pipe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109306422A (en) * | 2018-12-13 | 2019-02-05 | 株洲硬质合金集团有限公司 | A kind of preparation method of molybdenum carbide-molybdenum composite material |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20180717 |