CN106145949A - The preparation technology of a kind of graphitic carbon material and apply the inner container of electric cooker of this technique - Google Patents
The preparation technology of a kind of graphitic carbon material and apply the inner container of electric cooker of this technique Download PDFInfo
- Publication number
- CN106145949A CN106145949A CN201610662138.7A CN201610662138A CN106145949A CN 106145949 A CN106145949 A CN 106145949A CN 201610662138 A CN201610662138 A CN 201610662138A CN 106145949 A CN106145949 A CN 106145949A
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- Prior art keywords
- graphitic carbon
- preparation technology
- mixture
- carbon material
- electric cooker
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Classifications
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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
- 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
-
- 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
-
- 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
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
Abstract
The invention discloses the preparation technology of a kind of graphitic carbon material and apply the inner container of electric cooker of this technique, this step of preparation process includes by flour mill, a certain proportion of coking coal and graphite are carried out pulverizing respectively；Raw material after above-mentioned pulverizing is carried out mixing treatment；To completing the further fine grinding of mixture after batch mixing；Mixture after completing fine grinding is put into stereotyped mould and is pressed；Compressing mixture is carried out roasting to solidifying and setting；By the mixture after roasting through the process of Temperature fall, then heating and make its inkization, inner container of electric cooker is made up of above-mentioned technique.The present invention uses the graphitic carbon that special process is made, and has that density is little, lightweight, ash is low, compressive property good so that it is the graphitic carbon inner container of electric cooker of manufacture is lightweight, and intensity is high, and pyroconductivity is higher simultaneously, and heat transfer is fast, is heated evenly.
Description
Technical field
The present invention relates to the preparation technology of a kind of graphitic carbon material and apply the inner container of electric cooker of this technique.
Background technology
The inner container of electric cooker that everyday home uses, is mainly made up of metal materials such as aluminum, ferrum, rustless steels, and it is adding
The problem being easy to during hot cook food viscous pot occur, be burned, so producer all sprays on metal inner tube surface when producing
It is coated with non-viscous paint, but so, use time long rear surface sprayed coating is easy to occur coming off and fading phenomenon, the most internal
Service life of gallbladder and health aspect is all brought adverse influence.
Summary of the invention
For solving above-mentioned technical problem, the preparation technology and the application that it is an object of the invention to provide a kind of graphitic carbon material should
The inner container of electric cooker of technique.
The technical solution used in the present invention is: the preparation technology of a kind of graphitic carbon material, comprises the following steps:
A, pulverizing, carry out pulverizing by flour mill respectively by a certain proportion of coking coal and graphite；
B, batch mixing, carry out mixing treatment by the raw material after above-mentioned pulverizing；
C, fine grinding, to completing the further fine grinding of mixture after batch mixing；
D, compacting, the mixture after completing fine grinding is put into stereotyped mould and is pressed；
E, roast, carry out roasting to solidifying and setting by compressing mixture；
F, graphitization, by the mixture after roasting through the process of Temperature fall, then heat and make its inkization.
In step a, the ratio of coking coal and graphite is: coking coal 70%, graphite 30%, and described coking coal selects volatile matter 19.6
～the standard coal in the range of 44.0%.
In step a, described pulverizing is that described coking coal particle particle diameter is ground to less than 75 microns, is ground by graphite granule
200 mesh sieves can be passed through to 90～95%.
In stepb, described mixing treatment is that the raw material after pulverizing carries out on batch mixer batch mixing, mixing time
45～60 minutes.
In step c, described fine grinding uses micronizer to carry out, and the intake port of described micronizer is 0.5 meter, institute
State micronizer and control charging rate after 1.5 kg/minute, inlet pressure are under conditions of 0.7 MPa to completing batch mixing
Mixture carries out fine grinding and its particle diameter is ground to form 8～12 microns.
In step d, described compressing molding pressure uses 30～155 MPas.
In step e, described roasting need to be carried out under the protection of noble gas.
In step e, described roasting need to control to be heated under conditions of 45 DEG C/min 1300 DEG C at heating rate, and
It is incubated 30～45 days.
In step f, described in heat be that with the programming rate of 110 DEG C/h, the mixture after roasting is heated to 2800
℃。
A kind of inner container of electric cooker applying described technique, it makes material is coking coal and graphite, and described inner container of electric cooker leads to
Crossing step a～step f is fabricated by, in step d, described mould is shaped to the shape of inner container of electric cooker.
The method have the benefit that the graphitic carbon that the present invention uses special process to make, have that density is little, lightweight, ash
Low, compressive property good so that it is the graphitic carbon inner container of electric cooker of manufacture is lightweight, and intensity is high, and pyroconductivity is higher simultaneously, heat transfer
Hurry up, be heated evenly.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described further.
Fig. 1 is the preparation technology flow chart of graphitic carbon material of the present invention.
Detailed description of the invention
As it is shown in figure 1, the preparation technology of a kind of graphitic carbon material, its making step includes: a, pulverizing, by a certain proportion of
Coking coal and graphite carry out pulverizing by flour mill respectively；
B, batch mixing, carry out mixing treatment by the raw material after above-mentioned pulverizing；
C, fine grinding, to completing the further fine grinding of mixture after batch mixing；
D, compacting, the mixture after completing fine grinding is put into stereotyped mould and is pressed；
E, roast, carry out roasting to solidifying and setting by compressing mixture；
F, graphitization, by the mixture after roasting through the process of Temperature fall, then heat and make its inkization.
It is understood that graphite material is to be made up of carbon atom, belongs to Inorganic Non-metallic Materials but there is many excellences of metal
Characteristic, structure quite stable after high-temperature firing, will not with anything mutual adhesion, have good heat conductivity and
Electric conductivity, high temperature resistant and extremely strong corrosion resistance, although graphite product is widely used in manufacture lives daily in Japan, Korea S
Conduct industry, but China is as main graphite material exported country of the world, but to graphite material utilization in daily life and
Promote the most few.Therefore, develop a kind of health environment-friendly and have the electric conductivity of metallic character and the stone that heat conductivity is all excellent simultaneously
Ink carbon inner bag has critically important meaning.
In step a, the ratio of coking coal and graphite is: coking coal 70%, graphite 30%, and this ratio is to obtain through test of many times
Best proportion out, the parameter value such as idiosome resistivity that this ratio is worked it out, idiosome hardness, ultimate stress limit reaches
Excellent, coking coal selects volatile matter standard coal in the range of 19.6～44.0%, this coking coal Heat stability is good, and crushing strength is high, wear-resisting
Property.
After choosing raw material, by flour mill, coking coal particle particle diameter is ground to less than 75 microns, graphite granule is ground to
90～95% can pass through 200 mesh sieves, and this technique just can carry out next step fine grinding after needing first pulverizing, and this is a lot of industry universals
Way, this is to ensure that milling quality is good, does not haves granule and varies uneven situation, granular size difference mistake
Conference causes in subsequent handling causing the phenomenon in cavity because of being heated uneven, and granular size difference is excessive also can affect idiosome
The aspects such as resistivity after molding, heat conductivity.
Then the raw material after pulverizing is carried out on batch mixer batch mixing, mixing time 45～60 minutes, it is ensured that coking coal
Granule and graphite granule can be sufficiently mixed.
Next step, to the further fine grinding of coking coal and graphite mixture completing batch mixing, fine grinding uses micronizer to carry out, should
The intake port of micronizer is 0.5 meter, and micronizer controls charging rate at 1.5 kg/minute, inlet pressure 0.7
Under conditions of MPa, the mixture completing batch mixing is carried out fine grinding and its particle diameter is ground to form 8～12 microns, size be 8～
Combining between granulate mixture in 12 micrometer ranges can be more tight, and yields is higher, does not haves because of product surface not
The most even generation inclined hole and cause the situation that green structure intensity is not enough, if grain diameter is relatively big, can go out during rear working procedure processing
There have been phosphorus and delamination phenomenon in existing idiosome surface, thus affects product quality.
Then the mixture after completing fine grinding is put into stereotyped mould and is pressed, and molding pressure uses 30
～155 MPas, compressing after goods internal stress low, and buckling deformation is the least, and performance is more stable, any surface finish, it is not necessary to
Secondary modification.
Then compressing mixture carried out under the protection of noble gas roasting and is heated to 1300 DEG C, controlling to rise
Temperature rate controlled at 45 DEG C/min and is incubated 30～45 days, prevents mixture in the case of a high temperature under the effect of noble gas
With the external world, chemical reaction occurring, controlling heating rate is the feelings in order to avoid causing blank to crack the soonest because of temperature-rise period
Condition, at 1300 DEG C, insulation can make the abundant solidifying and setting of blank for 30～45 days.
Finally the semi-finished product after roasting are heated to 2800 DEG C with the programming rate of 110 DEG C/h so that it is graphitization, 2800 DEG C
It is graphited optimal temperature, then cannot realize graphitization less than 2800 DEG C of idiosomes.
A kind of applying the above-mentioned inner container of electric cooker stating technique, it makes material is coking coal and graphite, this inner container of electric cooker by
Above-mentioned embodiment is fabricated by, and above-mentioned compressing middle mould is shaped to the shape of inner container of electric cooker.
The setting of above-mentioned compressing middle mold shape is not limited to the shape of inner container of electric cooker, is designed to according to demand
Other shape also may be used.
The inner container of electric cooker being made by above-mentioned processing procedure, its design parameter is: thermal coefficient of expansion 3.5 * 10-6/K、
Laterally bursting stress 45 MPa, ultimate tensile strength 28 MPa, yang type modulus 13 GPa, pyroconductivity 140 W/m K.
The foregoing is only the preferred embodiments of the present invention, the present invention is not limited to above-mentioned embodiment, as long as with
Essentially identical means realize within the technical scheme of the object of the invention broadly falls into protection scope of the present invention.
Claims (10)
1. the preparation technology of a graphitic carbon material, it is characterised in that comprise the following steps:
A, pulverizing, carry out pulverizing by flour mill respectively by a certain proportion of coking coal and graphite；
B, batch mixing, carry out mixing treatment by the raw material after above-mentioned pulverizing；
C, fine grinding, to completing the further fine grinding of mixture after batch mixing；
D, compacting, the mixture after completing fine grinding is put into stereotyped mould and is pressed；
E, roast, carry out roasting to solidifying and setting by compressing mixture；
F, graphitization, by the mixture after roasting through the process of Temperature fall, then heat and make its inkization.
The preparation technology of a kind of graphitic carbon material the most according to claim 1, it is characterised in that: in step a, coking coal and
The ratio of graphite is: coking coal 70%, graphite 30%, and described coking coal selects volatile matter standard coal in the range of 19.6～44.0%.
The preparation technology of a kind of graphitic carbon material the most according to claim 1, it is characterised in that: in step a, described mill
Powder is that described coking coal particle particle diameter is ground to less than 75 microns, graphite granule is ground to 90～95% and can pass through 200 mesh sieves.
The preparation technology of a kind of graphitic carbon material the most according to claim 1, it is characterised in that: in stepb, described mixed
It is that the raw material after pulverizing carries out on batch mixer batch mixing, mixing time 45～60 minutes that material processes.
The preparation technology of a kind of graphitic carbon material the most according to claim 1, it is characterised in that: in step c, described carefully
Mill uses micronizer to carry out, and the intake port of described micronizer is 0.5 meter, and described micronizer controls charging rate and exists
1.5 kg/minute, inlet pressure carry out fine grinding and by its particle diameter under conditions of 0.7 MPa to the mixture after completing batch mixing
Grind to form 8～12 microns.
The preparation technology of a kind of graphitic carbon material the most according to claim 1, it is characterised in that: in step d, described pressure
The molding pressure making type uses 30～155 MPas.
The preparation technology of a kind of graphitic carbon material the most according to claim 1, it is characterised in that: in step e, described roasting
Burning need to be carried out under the protection of noble gas.
The preparation technology of a kind of graphitic carbon material the most according to claim 1, it is characterised in that: in step e, described roasting
Burning need to control to be heated under conditions of 45 DEG C/min 1300 DEG C at heating rate, and is incubated 30～45 days.
The preparation technology of a kind of graphitic carbon material the most according to claim 1, it is characterised in that: in step f, described in add
Temperature is that with the programming rate of 110 DEG C/h, the mixture after roasting is heated to 2800 DEG C.
10. the inner container of electric cooker applying the arbitrary described preparation technology of claim 1-9, it is characterised in that: described electric cooker
The making material of inner bag is coking coal and graphite, and described inner container of electric cooker is fabricated by by step a～step f, in step d,
Described mould is shaped to the shape of inner container of electric cooker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610662138.7A CN106145949A (en) | 2016-08-12 | 2016-08-12 | The preparation technology of a kind of graphitic carbon material and apply the inner container of electric cooker of this technique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610662138.7A CN106145949A (en) | 2016-08-12 | 2016-08-12 | The preparation technology of a kind of graphitic carbon material and apply the inner container of electric cooker of this technique |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106747551A (en) * | 2016-12-20 | 2017-05-31 | 湖南金博碳素股份有限公司 | Carbon/carbon compound material inner pan of electric cooker preparation method based on carbon fiber powder |
| CN107604237A (en) * | 2017-09-27 | 2018-01-19 | 安徽海立精密铸造有限公司 | A kind of A type graphite casting and its preparation technology |
| IT201600129050A1 (en) * | 2016-12-20 | 2018-06-20 | Biocookup S R L | PROCEDURE FOR OBTAINING AN ORGANIC CONTAINER FOR FOOD COOKING. |
| CN108794006A (en) * | 2017-05-03 | 2018-11-13 | 佛山市顺德区美的电热电器制造有限公司 | The preparation method and graphite pot of graphite cooker |
| CN112201377A (en) * | 2020-09-29 | 2021-01-08 | 内蒙古金彩矿业有限公司 | Shaping system and shaping method of natural graphite powder for high-temperature gas-cooled reactor nuclear fuel element |
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| CN112201377A (en) * | 2020-09-29 | 2021-01-08 | 内蒙古金彩矿业有限公司 | Shaping system and shaping method of natural graphite powder for high-temperature gas-cooled reactor nuclear fuel element |
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Application publication date: 20161123 |