CN108794006A - The preparation method and graphite pot of graphite cooker - Google Patents
The preparation method and graphite pot of graphite cooker Download PDFInfo
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- CN108794006A CN108794006A CN201710305083.9A CN201710305083A CN108794006A CN 108794006 A CN108794006 A CN 108794006A CN 201710305083 A CN201710305083 A CN 201710305083A CN 108794006 A CN108794006 A CN 108794006A
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- 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
- C04B35/52—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 carbon, e.g. graphite
- C04B35/522—Graphite
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/002—Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
- A47J36/04—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay the materials being non-metallic
-
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
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- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/658—Atmosphere during thermal treatment
- C04B2235/6581—Total pressure below 1 atmosphere, e.g. vacuum
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Food Science & Technology (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
- Cookers (AREA)
Abstract
The present invention relates to graphite products preparation fields, disclose a kind of preparation method and graphite pot of graphite cooker.The preparation method of the graphite cooker includes step：Graphite powder is mixed with binder and mills to obtain slurry by S1；And S2, the slurry is prepared into using powder metallurgical technique by required graphite cooker.The method of the present invention solves the technical issues of graphite cooker preparation process of the existing technology is complicated, the production cycle is long and high processing costs.
Description
Technical field
The present invention relates to graphite products preparation fields, more particularly to the preparation method and graphite pot of a kind of graphite cooker.
Background technology
Currently, electromagnetic heating may be used in the cookware with graphite inner container, since electromagnetic heating can be such that liner integrally sends out
Heat, it may therefore be assured that the food fired is heated evenly and from inside outwards ripe, not only good taste, moreover it is possible to it is original to lock food
Nutrient.In addition, electromagnetic heating also has the characteristics that heating time is short.Therefore, there is wider prospect of the application.
First compacting sintering goes out block after graphite powder and binder mixing is usually used in existing graphite cookware, then carries out machine
Working process is to prepare the graphite products of required shape.It is longer using above method manufacturing cycle, generally require 4-5 months when
Between, cost is higher.
Therefore, it is necessary to a kind of preparation methods of novel graphite cooker, have good mechanical property in guarantee graphite cookware
Under the premise of electromagnetic heating effect, production cycle and cost are reduced.
Invention content
The purpose of the invention is to overcome graphite cooker preparation process of the existing technology is complicated, the production cycle is long,
And the technical issues of high processing costs.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of preparation method of graphite cooker, institute
The preparation method for stating graphite cooker includes step：Graphite powder is mixed with binder and mills to obtain slurry by S1；S2, using powder
The slurry is prepared into required graphite cooker by last metallurgical technology.
Preferably, the binder is polyvinyl alcohol or phenolic resin.
Preferably, the weight of the binder and the ratio of the graphite powder and the overall weight of binder are 0.2-0.4.
Preferably, the powder metallurgical technique in the S2 steps includes the following steps：The slurry that will be obtained through S1 step process
Material is baked into dried powder.Above-mentioned dried powder is screened and classified using the sieve of different model.By different-grain diameter
Powder be uniformly mixed.Above-mentioned mixed powder is filled and pressurizes and keeps the temperature into mold heat, to obtain the embryo of graphite cookware
Body.Green body is placed in vacuum sintering furnace and is sintered, final products are obtained after cooling.
Preferably, the step screens above-mentioned dried powder using the sieve of different model and is classified specific
For：The powder of drying is screened respectively under the first sieve, the second sieve, third sieve and the 4th sieve to obtain four
The powder of kind different-grain diameter, wherein the mesh of first sieve to the 4th sieve is sequentially increased.
Preferably, the model of first sieve to the 4th sieve is followed successively by 140-160 mesh, 110-130 mesh, 70-
90 mesh and 50-70 mesh.
Preferably, the model of first sieve to the 4th sieve is followed successively by 150 mesh, 120 mesh, 80 mesh and 60 mesh.
Preferably, the powder of different-grain diameter is uniformly mixed by the step is specially：By the powder of four kinds of different-grain diameters with
The proportioning of setting is placed in the closed container of rolling, and is continuously rolled to be uniformly mixed.
Preferably, the proportioning set as：1：1：1：1, the time continuously rolled is 10h-24h.
Preferably, above-mentioned mixed powder is filled and pressurizes and keep the temperature into mold heat by the step, wherein mold heat
Temperature be 140 DEG C -160 DEG C；On-load pressure is 100T-150T；Soaking time is 10-20min.
Preferably, green body is placed in vacuum sintering furnace by the step is sintered, and sintering temperature is 1100 DEG C -1400
℃；Soaking time is 2-4 days.
According to another aspect of the present invention, a kind of graphite pot is additionally provided, which includes pot cover, bottom equipped with electricity
The pot body of magnetic heating device and the graphite inner container that can be separately provided in the pot body, wherein the graphite inner container is using upper
The preparation method for the graphite cooker stated is prepared.
Preferably, the inner surface of the matrix of the graphite inner container is equipped with non-sticking lining；The appearance of the graphite inner container matrix
Face is equipped with silicone resin coating, wherein is formed among aluminium oxide between the graphite inner container matrix and the non-sticking lining
Layer.
Preferably, the porosity of the graphite inner container matrix is 5%-20%, and the average diameter of the hole is 5-40 μm.
The present invention provides a kind of method preparing graphite cooker using powder metallurgical technique, this method can effectively shorten
Production cycle reduces production cost.
Description of the drawings
Fig. 1 is the schematic diagram of the preparation method of the graphite cooker of the present invention；
Fig. 2 is a kind of flow chart of the preparation method of the graphite cooker of specific implementation mode of the present invention；
Fig. 3 is a kind of structural schematic diagram of the graphite pot of mode of the present invention.
Reference sign
100 non-sticking linings 200 aoxidize aluminum middle layer
300 graphite inner container, 400 silicone resin coating
Specific implementation mode
The present invention provides a kind of preparation methods of graphite cooker, and the preparation method of the graphite cooker includes step：S1, will
Graphite powder mixes with binder and mills to obtain slurry；And S2, the slurry is prepared into using powder metallurgical technique required
Graphite cooker.Preferably, binder is polyvinyl alcohol or phenolic resin.The weight of binder and the graphite powder and binder
The ratio of overall weight is 0.2-0.4.
The graphite cooker of the present invention uses powder metallurgical technique and is prepared.Specifically, the present invention is with graphite powder and list
One binder is raw material, and includes following preparation process：It is dry：The slurry obtained through S1 step process is baked into xeraphium
End；Sieve grain：Above-mentioned dried powder is screened and classified using the sieve of different model；Batch mixing：By the powder of different-grain diameter
End is uniformly mixed；It is hot-forming：Above-mentioned mixed powder is filled and pressurizes and keeps the temperature into mold heat, to obtain graphite cookware
Idiosome；High temperature sintering：Green body is placed in vacuum sintering furnace and is sintered；And it is finally produced after cooling to room temperature with the furnace
Product.
In order to improve the compactness of compacting idiosome, first：By the powder of drying in the first sieve, the second sieve, third sieve
It is screened respectively under net and the 4th sieve to obtain the powder of four kinds of different-grain diameters, wherein first sieve is to described
The mesh of 4th sieve is sequentially increased.Later, the powder of four kinds of different-grain diameters is placed in the closed appearance of rolling with the proportioning set
In device, and continuously roll to be uniformly mixed.
In order to ensure idiosome material has certain mobility to ensure that good die mould, use are hot-forming.
In addition, it is abundant in order to ensure being reacted between binder and graphite powder, idiosome is high as being carried out in vacuum sintering furnace
Temperature sintering.
The preparation process of the graphite cooker of the present invention is illustrated below.
Embodiment 1
(1) by graphite powder (200 mesh of granularity) and bonding agent polyvinyl alcohol, (weight ratio 20%) mixes by a certain percentage,
Ball milling forms slurry in 5 hours in ball grinder.
(2) slurry after ball milling is toasted in 100 DEG C of oven, keeps the temperature 10min.
(3) powder of drying is being screened and is being classified under the sieve of 140 mesh, 110 mesh, 70 mesh and 50 mesh respectively
Storage, obtains the mixed-powder of the uniform tiny graphite and binder of corresponding four kinds of grain sizes.
(4) by the mixed-powder of four kinds of grain sizes with 1：1：1：1 proportioning is placed in the closed container of big volume, is led to
It crosses tourelle its internal powder continuously rolls 10h, it is ensured that four kinds of powder of different-grain diameter are uniformly mixed.
(5) above-mentioned uniformly mixed powder is filled with and is heated in 140 DEG C of mold, load the pressure of 100T, when heat preservation
Between 10min, prepare required idiosome cooker.
(6) idiosome cooker is placed in vacuum sintering furnace (10~10-2Pa), it is gradually heating to 1100 DEG C to be sintered, protects
The warm time is 2 days.
(7) it is slowly cooled to room temperature with stove, obtains required graphite cooker.
Embodiment 2
(1) by graphite powder (300 mesh of granularity) and bonding agent polyvinyl alcohol, (weight ratio 25%) mixes by a certain percentage,
Ball milling obtains slurry in 7 hours in ball grinder.
(2) slurry after ball milling is toasted in 120 DEG C of oven, keeps the temperature 10min.
(3) powder of drying is being screened and is being classified under the sieve of 150 mesh, 120 mesh, 80 mesh and 60 mesh respectively
Storage, obtains the mixed-powder of the uniform tiny graphite and binder of corresponding four kinds of grain sizes.
(4) by the mixed-powder of four kinds of grain sizes with 1：1：1：1 proportioning is placed in the closed container of big volume, is led to
It crosses tourelle its internal powder continuously rolls 16h, it is ensured that four kinds of powder of different-grain diameter are uniformly mixed.
(5) above-mentioned uniformly mixed powder is filled with and is heated in 150 DEG C of mold, load the pressure of 120T, when heat preservation
Between 15min, prepare required idiosome cooker.
(6) idiosome cooker is placed in vacuum sintering furnace (10~10-2Pa), it is gradually heating to 1200 DEG C to be sintered, protects
The warm time is 3 days.
(7) it is slowly cooled to room temperature with stove, obtains required graphite cooker.
Embodiment 3
(1) by graphite powder (400 mesh of granularity) and bonding agent phenolic resin, (weight ratio 40%) mixes by a certain percentage,
Ball milling obtains slurry in 10 hours in ball grinder.
(2) slurry after ball milling is toasted in 150 DEG C of oven, keeps the temperature 20min.
(3) powder of drying is being screened and is being classified under the sieve of 160 mesh, 130 mesh, 90 mesh and 70 mesh respectively
Storage, obtains the mixed-powder of the uniform tiny graphite and binder of corresponding four kinds of grain sizes.
(4) by the mixed-powder of four kinds of grain sizes with 1：1：1：1 proportioning is placed in the closed container of big volume, is led to
It crosses tourelle its internal powder continuously rolls for 24 hours, it is ensured that four kinds of powder of different-grain diameter are uniformly mixed.
(5) above-mentioned uniformly mixed powder is filled with and is heated in 160 DEG C of mold, load the pressure of 150T, when heat preservation
Between 20min, prepare required idiosome cooker.
(6) idiosome cooker is placed in vacuum sintering furnace (10~10-2Pa), it is gradually heating to 1400 DEG C to be sintered, protects
The warm time is 4 days.
(7) it is slowly cooled to room temperature with stove, obtains required graphite cooker.
The present invention also provides a kind of graphite pots, including pot cover, bottom to be equipped with the pot body of electromagnetic heater and can detach
The graphite inner container in pot body is arranged in ground.The matrix of graphite inner container be using above-mentioned graphite cooker preparation method prepare and
At.
The inner surface of the matrix of graphite inner container 300 is equipped with non-sticking lining 100.The outer surface of 300 matrix of graphite inner container is equipped with
Silicone resin coating 400, wherein oxidation aluminum middle layer 200 is formed between graphite inner container matrix and non-sticking lining.This
In the case of, 200 hardness of oxidation aluminum middle layer is high, wearability is good and has microscopic voids, therefore is suitble to the heavy of non-sticking lining 100
Product.Oxidation aluminum middle layer 200 can be perfectly adhered on graphite matrix 300, and can be as the deposition of non-sticking lining 100
Basis, overcomes that non-sticking lining hardness caused by 300 surface Direct precipitation non-sticking lining 100 of graphite matrix is low, wearability
The defects of difference and adhesive force are inadequate.
In addition, the porosity of graphite inner container matrix is 5%-20%, the average diameter of hole is 5-40 μm.By controlling stone
The porosity of black liner intrinsic silicon and the size of average pore size, it can be ensured that each position of graphite inner container can be in the work of coil
Lasting electromagnetic heating is carried out with lower.Further, since graphite inner container prepared by above-mentioned technique can have certain porosity,
That is, the intrinsic silicon in graphite inner container is formed with more closed individual cavities, these cavitys can be to graphite inner container inside warm
Scattering and disappearing and transmitting for amount generates certain barrier effect.Thus, it is ensured that the electromagnetic heating and heat storage performance of graphite inner container.This
Outside, why in 5%-20% it is to balance the heat storage performance and electromagnetism of graphite inner container within the scope of this by porosity control
Heating effect.Because if porosity is too low, graphite inner container heat storage performance can be decreased obviously, and if porosity is excessively high, stone
The electromagnetic heating effect of black liner can be deteriorated.
The preferred embodiment of the present invention is described in detail above in association with attached drawing, still, the present invention is not limited thereto.At this
In the range of the technology design of invention, a variety of simple variants can be carried out to technical scheme of the present invention.Including each particular technique
Feature is combined in any suitable manner.In order to avoid unnecessary repetition, the present invention is to various combinations of possible ways
No longer separately illustrate.But it should also be regarded as the disclosure of the present invention for these simple variants and combination, belongs to the present invention
Protection domain.
Claims (14)
1. a kind of preparation method of graphite cooker, which is characterized in that the preparation method of the graphite cooker includes step：S1, will
Graphite powder mixes with binder and mills to obtain slurry；And S2, the slurry is prepared into using powder metallurgical technique required
Graphite cooker.
2. the preparation method of graphite cooker according to claim 1, which is characterized in that the binder be polyvinyl alcohol or
Phenolic resin.
3. the preparation method of graphite cooker according to claim 1, which is characterized in that the weight of the binder with it is described
The ratio of the overall weight of graphite powder and binder is 0.2-0.4.
4. the preparation method of graphite cooker according to claim 1, which is characterized in that the powder metallurgy in the S2 steps
Technique includes the following steps：
It is dry：The slurry obtained through S1 step process is baked into dried powder；
Sieve grain：Above-mentioned dried powder is screened and classified using the sieve of different model；
Batch mixing：The powder of different-grain diameter is uniformly mixed；
Molding：Above-mentioned mixed powder is filled and pressurizes and keeps the temperature into mold heat, to obtain the idiosome of graphite cookware；
Sintering：Green body is placed in vacuum sintering furnace and is sintered；
It is cooling：It cools to room temperature with the furnace, obtains final products.
5. the preparation method of graphite cooker according to claim 4, which is characterized in that the step is using different model
Sieve screens above-mentioned dried powder and is classified specially：By the powder of drying in the first sieve, the second sieve, third
It is screened respectively under sieve and the 4th sieve to obtain the powder of four kinds of different-grain diameters, wherein first sieve to institute
The mesh for stating the 4th sieve is sequentially increased.
6. the preparation method of graphite cooker according to claim 5, which is characterized in that first sieve to the described 4th
The model of sieve is followed successively by 140-160 mesh, 110-130 mesh, 70-90 mesh and 50-70 mesh.
7. the preparation method of graphite cooker according to claim 6, which is characterized in that first sieve to the described 4th
The model of sieve is followed successively by 150 mesh, 120 mesh, 80 mesh and 60 mesh.
8. the preparation method of graphite cooker according to claim 4, which is characterized in that the step is by the powder of different-grain diameter
End, which is uniformly mixed, is specially：The powder of four kinds of different-grain diameters is placed in the proportioning set in the closed container of rolling, and continuous
Rolling is to be uniformly mixed.
9. the preparation method of graphite cooker according to claim 8, which is characterized in that the proportioning set as：1：1：
1：1, the time continuously rolled is 10h-24h.
10. the preparation method of graphite cooker according to claim 4, which is characterized in that the step will be after above-mentioned mixing
Powder fill and pressurize and keep the temperature into mold heat, wherein the temperature of mold heat is 140 DEG C -160 DEG C；On-load pressure is 100T-
150T；Soaking time is 10-20min.
11. the preparation method of graphite cooker according to claim 4, which is characterized in that green body is placed in very by the step
It is sintered in empty sintering furnace, wherein sintering temperature is 1100 DEG C -1400 DEG C；Soaking time is 2-4 days.
12. a kind of graphite pot, including pot cover, bottom are equipped with the pot body of electromagnetic heater and can be separately provided at the pot body
Interior graphite inner container (300), which is characterized in that the matrix of the graphite inner container (300) is using arbitrary in claim 1-11
The preparation method of graphite cooker described in one claim is prepared.
13. graphite pot according to claim 12, which is characterized in that the inner surface of the matrix of the graphite inner container (300)
Equipped with non-sticking lining (100)；The outer surface of graphite inner container (300) matrix is equipped with silicone resin coating (400), wherein
Oxidation aluminum middle layer (200) is formed between the graphite inner container matrix and the non-sticking lining.
14. graphite pot according to claim 12, which is characterized in that the porosity of graphite inner container (300) matrix is
The average diameter of 5%-20%, the hole are 5-40 μm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710305083.9A CN108794006A (en) | 2017-05-03 | 2017-05-03 | The preparation method and graphite pot of graphite cooker |
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| CN201710305083.9A CN108794006A (en) | 2017-05-03 | 2017-05-03 | The preparation method and graphite pot of graphite cooker |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110330340A (en) * | 2019-07-18 | 2019-10-15 | 平顶山市信瑞达石墨制造有限公司 | A kind of ceramics-graphite composite material cooker and its preparation process |
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| JP2020182745A (en) * | 2019-05-09 | 2020-11-12 | 穴織カーボン株式会社 | Heating cooker and method of manufacturing the same |
| CN114210974A (en) * | 2021-12-17 | 2022-03-22 | 武汉苏泊尔炊具有限公司 | Cooker and method for manufacturing the same |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111348914A (en) * | 2018-12-24 | 2020-06-30 | 佛山市顺德区美的电热电器制造有限公司 | Method for producing carbonaceous molded article, and cooking utensil |
| JP2020182745A (en) * | 2019-05-09 | 2020-11-12 | 穴織カーボン株式会社 | Heating cooker and method of manufacturing the same |
| JP7085757B2 (en) | 2019-05-09 | 2022-06-17 | 穴織カーボン株式会社 | Cooking machine and its manufacturing method |
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| CN114210974A (en) * | 2021-12-17 | 2022-03-22 | 武汉苏泊尔炊具有限公司 | Cooker and method for manufacturing the same |
| CN114210974B (en) * | 2021-12-17 | 2023-11-03 | 武汉苏泊尔炊具有限公司 | Cooker and method for manufacturing the same |
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