CN107655333A - A kind of compound-heating heat-treatment furnace - Google Patents
A kind of compound-heating heat-treatment furnace Download PDFInfo
- Publication number
- CN107655333A CN107655333A CN201610594942.6A CN201610594942A CN107655333A CN 107655333 A CN107655333 A CN 107655333A CN 201610594942 A CN201610594942 A CN 201610594942A CN 107655333 A CN107655333 A CN 107655333A
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- electrode
- induction coil
- heat
- treatment furnace
- furnace
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 93
- 230000006698 induction Effects 0.000 claims abstract description 57
- 239000000463 material Substances 0.000 claims abstract description 30
- 238000003303 reheating Methods 0.000 claims abstract description 4
- 239000002131 composite material Substances 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000843 powder Substances 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 238000005265 energy consumption Methods 0.000 description 7
- 229910002804 graphite Inorganic materials 0.000 description 6
- 239000010439 graphite Substances 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000005087 graphitization Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/06—Crucible or pot furnaces heated electrically, e.g. induction crucible furnaces with or without any other source of heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/14—Arrangements of heating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
- F27D11/06—Induction heating, i.e. in which the material being heated, or its container or elements embodied therein, form the secondary of a transformer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D27/00—Stirring devices for molten material
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/22—Furnaces without an endless core
- H05B6/24—Crucible furnaces
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2001/00—Composition, conformation or state of the charge
- F27M2001/04—Carbon-containing material
Abstract
The invention discloses a kind of compound-heating heat-treatment furnace.The compound-heating heat-treatment furnace includes being arranged on the induction coil for being used for sensing heating material on the outside of body of heater and is arranged on the electrode pair in body of heater as reheating element；It is arranged on the outermost induction coil of graphitizing furnace and doubles as furnace shell.The present invention is combined using sensing heating and electrode pair DC heating, considerably improves heating effect, while improves the uniformity coefficient of material heating.
Description
Technical field
The present invention relates to a kind of compound-heating heat-treatment furnace, belong to heat-treatment furnace field.
Background technology
Existing graphitizing furnace is mostly graphite body heating, heat then is transmitted into material-to-be-heated, high energy consumption by way of radiation or heat transfer, efficiency is low；Most intermediate frequency furnaces only transfer heat to calandria by graphite crucible sensing heating, larger temperature difference be present close to the powder of crucible and the powder positioned at centre.
Chinese patent CN201010108189.8 discloses a kind of vertical high temperature continuous graphitizing furnace, and with upper/lower electrode to connecting dc source, using material as resistance heating, its shortcoming is high energy consumption, and the efficiency of heating surface is low.There is Medium frequency induction graphitizing furnace again afterwards,A kind of vertical continuous sensing high temperature graphitization stove as disclosed in Chinese patent CN201410666556.4,A kind of Super-high temperature graphitization treatment equipment disclosed in Chinese patent CN201410016297.0,A kind of continuous high-temperature graphite purification equipment disclosed in Chinese patent CN201210487294.6,Graphite purification and graphitizable high temperature vertical continuous induction heating furnace disclosed in Chinese patent CN200910042891.6,Continuous vertical type medium-frequency high temperature high purity graphite production equipment etc. disclosed in Chinese patent CN200920009018.2,It is characterized in efficiency of heating surface height,Energy consumption is low,But the thermal conductivity factor of powder is relatively low,So as to cause the temperature homogeneity of material in stove poor,The spread in performance of product is uneven,And these graphitizing furnaces have furnace shell structure and heat-insulation layer,In addition to needing furnace shell cooling water cooling,It also limit the volume size of heating furnace,It is bothersome time consuming that heat-insulation layer changes maintenance,In practice and be not implemented produce in enormous quantities.
The mode of heating of existing induction heater is that graphite crucible is heated by Medium frequency induction, then heat passes to material by crucible by way of heat transfer, but the thermal conductivity factor of material is relatively low, material of at the center and edge at crucible can be caused the temperature difference to be present, it is uneven to ultimately result in properties of product；And DC heating stove needs high current, high energy consumption, the efficiency of heating surface is low.
The content of the invention
The present invention is intended to provide a kind of compound-heating heat-treatment furnace, the heat-treatment furnace combination medium-frequency induction heating technology and DC heating technology, the temperature homogeneity of raising heated material, heating effect are more preferable while energy consumption is saved.
To achieve these goals, the technical solution adopted in the present invention is：
A kind of heat-treatment furnace of composite heating, it is structurally characterized in that, including is arranged on the induction coil for being used for sensing heating material on the outside of body of heater and is arranged on the electrode pair in body of heater as reheating element；It is arranged on the outermost induction coil of graphitizing furnace and doubles as furnace shell.
Thus, the present invention is combined using sensing heating and electrode pair DC heating, considerably improves heating effect, while improves the uniformity coefficient of material heating, and temperature mutually compensates for each other, and maximum temperature can reach 3100 DEG C.In addition, the present invention doubles as outer layer furnace shell with induction coil, traditional metal furnace shell is no longer set, body of heater size is set no longer to be limited by metal furnace shell, the volume of metal furnace shell can be subtracted, furnace shell diameter is usually 1.2-1.8 times of heating coil, reduce floor space, the manufacturing cost and cooling cost of metal furnace shell can be saved again, using powder material thermal conductivity it is poor the characteristics of, it is set to be used as insulation material, simultaneously idioelectric characteristic can be passed through using induction coil, powder material is directly heated, drastically increase the efficiency of heating surface of graphitizing furnace, reduce production cost, facilitate high-volume large-scale production.
According to an embodiment of the invention, further optimization can also be made to the present invention, below the technical scheme to be formed after optimization：
The induction coil is encapsulation induction coil；It is preferred that a diameter of 0.5m-10m of induction coil, more preferably 1m-3m；It is preferred that the top of induction coil is the supporter poured by pouring material, bottom is the hollow induction coil poured.
Rotating disc is provided with the top of the induction coil, the rotating disc is provided with rotary shaft, electrode and charging aperture；The induction coil bottom is provided with plate electrode, and the discharging opening being connected with cooling zone is provided among the plate electrode；Described electrode pair is formed between the electrode and plate electrode, thus, while electrode pair forms two level heating element heater, electrode is induced coil heats and forms heating element heater（High using the sensing heating efficiency of heating surface, energy consumption is low, no low-voltage, high-current, it is not necessary to lower pressure rectifier, reduces the consumption of the copper loss and iron loss of transformer, production cost is low, and its electrical heating efficiency improves 50%）, heating region area can be further improved, while in-furnace temperature is further improved, improve the efficiency of heating surface.
The edge position of the rotating disc is supported by induction coil；The electrode runs through and is fixed on rotating disc, and the plate electrode forms the crucible for containing heated material with induction coil.It is preferred that the electrode is provided with the adjustment structure that regulation electrode stretches into induction coil inner length；More preferably described adjustment structure is rotational structure or helicitic texture.
The number of electrodes is no less than 2, is uniformly distributed along rotating disc center line；It is preferred that the electrode distance induction coil inwall distance is 50-500mm.
In order to facilitate foreign gas quickly to overflow in heating, the middle part of the electrode is through-hole structure, and the through-hole structure doubles as exhaust passage and thermometric passage；Preferred electrode bottom is provided with the oblique perforate of equally distributed ecto-entad.
Stirring action is played to material simultaneously during in order to realize electrode rotary, makes material heating process evenly, the rotary shaft is connected to form rotating element drive rotation disc spins with drive device；It is preferred that the rotating speed of the rotary shaft is not higher than 6r/min, preferably 0 r/min -3r/min.Thus, electrode is driven by drive device and rotated, and material is stirred in heating.
The heat-treatment furnace is that the material for being installed in induction coil inner wall area doubles as inner thermal insulating layer without furnace shell graphitizing furnace.
The power frequency of the induction coil is 350-3000HZ, heating power 500-2000kW.
The electrode includes an at least electrode group, and each electrode group has each of three electrodes, and each of three electrodes of each electrode group is connected with the ABC three-phases of three-phase electricity and heated by electrodes area is formed between each of three electrodes respectively；It is preferred that the heated by electrodes area is located at the top of induction coil heating zone.
Compared with prior art, the beneficial effects of the invention are as follows：
1. realize higher temperature；Two kinds of mode of heatings work simultaneously, and temperature mutually compensates for each other, can obtain more preferable temperature, and maximum temperature can reach 3100 DEG C.By the composite heating of front and rear section, it can realize that present segment temperature occurs not enough or when heating export license and power decrease, back segment can be used as the useful compensation of maintenance burner hearth high temperature section all the time.
2. realize different Temperature Distributions；Temperature Distribution different in burner hearth is realized by the power of the size of current and sensing heating that adjust electrode.
3. temperature homogeneity is more preferable；The center and peripheral temperature difference caused by heated by electrodes can compensate heat transfer, while the temperature difference caused by roof of the furnace and bottom heat insulation effect difference is compensated, improve temperature homogeneity.
4. without metal furnace shell, do not limited by furnace shell size, body of heater size does not limit, and heating zone diameter can reach 2-10m, is 2-6 times of traditional induction furnace, single heat processing yield rise, is more suitable for volume production；In addition, without furnace shell, no-cooling-water, danger caused by leak is avoided, while save the energy consumption of cooling water system.
5. the carbon felt heat-insulation layer of abandoning tradition, using the characteristics of negative material granularity is small, bulk specific weight is small, heat transfer efficiency is low, directly using powder as insulation material, that is, outside transfer of heat is avoided to be lost, the overall thermal efficiency is improved, maintenance cost caused by reducing insulation material again.
6. multi-electrode is also inductively heated while directly heating material, powder material is heated simultaneously as thermal source, high-temperature region is expanded to original 4-5 times, makes powder material more uniform.
Brief description of the drawings
Fig. 1 is the structure principle chart of one embodiment of the invention.
Embodiment
Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the present invention can be mutually combined.For sake of convenience, hereinafter as there are " on ", " under ", "left", "right" printed words, only represent that the upper and lower, left and right direction with accompanying drawing in itself is consistent, not to structure restriction effect.
A kind of compound-heating heat-treatment furnace, as shown in figure 1, the encapsulation induction coil 4 including being used for sensing heating material on the outside of body of heater, and the electrode pair as reheating element.The graphitizing furnace is without furnace shell graphitizing furnace, is arranged on the outermost induction coil 4 of graphitizing furnace and doubles as furnace shell, the material for being installed in the inner wall area of induction coil 4 doubles as inner thermal insulating layer.The top of induction coil 4 is the supporter poured by pouring material, and bottom is the hollow induction coil poured, and both collectively constitute induction coil 4.
The top of induction coil 4 is provided with rotating disc 2, and rotating disc 2 is provided with rotary shaft 1, electrode 3 and charging aperture 5, and the bottom of induction coil 4 is additionally provided with plate electrode 7, is provided with discharging opening 6 among plate electrode 7, discharging opening 6 is connected with cooling zone 8；Described electrode pair is formed between the electrode 3 and plate electrode 7, electrode pair forms composite heating with the sensing heating that induction coil 4 is formed；The edge position of rotating disc 2 is supported by induction coil 4；The electrode 7 runs through and is fixed on rotating disc 2, the length that electrode 7 can be stretched into inside induction coil 4 by regulations such as rotation or screw threads；The plate electrode 7 forms the crucible for containing heated material with induction coil 4.
The quantity of electrode 3 is no less than 2, is uniformly distributed along the center line of rotating disc 2；The electrode 3 is 50-500mm apart from the inwall of induction coil 4 distance；The middle part of electrode 3 is through-hole structure, is used as exhaust passage and thermometric passage by structure, is provided with the oblique perforate of equally distributed ecto-entad in preferred electrode 3 simultaneously, makes impurity be more easy to discharge.
The rotary shaft 1 be connected with drive device to be formed rotating element drive rotating disc 2 rotate, so as to realize the agitating function of electrode 3；It is preferred that the rotary shaft 1 is preferably 0 r/min -3r/min.
The diameter of induction coil 4 is preferably 1m -3m.
The power frequency of the induction coil is 350-3000HZ, heating power 500-2000kW.
As a kind of preferred scheme, when the quantity of electrode 3 is 3 multiple（Minimum 1 group）, 3 connected electrodes can be formed an electrode group, each of three electrodes of each electrode group connects the ABC three-phases of three-phase electricity respectively, i.e. an electrode connects A phases, a piece electrode connects B phases, and an electrode connects C phases, so as to form heating zone between each of three electrodes of a group of motors.The heated by electrodes area is located at sensing heating area top, forms composite heating.
The content that above-described embodiment illustrates should be understood to that these embodiments are only used for being illustrated more clearly that the present invention, rather than limitation the scope of the present invention, after the present invention has been read, modification of the those skilled in the art to the various equivalent form of values of the present invention each falls within the application appended claims limited range.
Claims (10)
1. a kind of heat-treatment furnace of composite heating, it is characterised in that be used for the induction coil of sensing heating material on the outside of body of heater including being arranged on（4）With the electrode pair being arranged in body of heater as reheating element；It is arranged on the outermost induction coil of graphitizing furnace（4）As furnace shell.
2. the heat-treatment furnace of composite heating according to claim 1, it is characterised in that the induction coil（4）To encapsulate induction coil；It is preferred that the induction coil（4）A diameter of 0.5m-10m, more preferably 1m-3m；It is preferred that induction coil（4）Top be the supporter that is poured by pouring material, bottom is the hollow induction coil poured.
3. the heat-treatment furnace of composite heating according to claim 1, it is characterised in that the induction coil（4）Top is provided with rotating disc（2）, the rotating disc（2）It is provided with rotary shaft（1）, electrode（3）And charging aperture（5）；The induction coil（4）Bottom is provided with plate electrode（7）, the plate electrode（7）Centre is provided with and cooling zone（8）Connected discharging opening（6）；The electrode（3）With plate electrode（7）Between form described electrode pair.
4. the heat-treatment furnace of composite heating according to claim 3, it is characterised in that the rotating disc（2）Edge position by induction coil（4）Support；The electrode（3）Run through and be fixed on rotating disc（2）On, the plate electrode（7）With induction coil（4）Form the crucible for containing heated material；It is preferred that the electrode（3）It is provided with regulation electrode（3）Stretch into induction coil（4）The adjustment structure of inner length；More preferably described adjustment structure is rotational structure or helicitic texture.
5. the heat-treatment furnace of composite heating according to claim 3, it is characterised in that the electrode（3）Quantity is no less than 2, along rotating disc（2）Center line is uniformly distributed；It is preferred that the electrode（3）Apart from induction coil（4）Inwall distance is 50-500mm.
6. the heat-treatment furnace of composite heating according to claim 3, it is characterised in that the electrode（3）Middle part be through-hole structure, the through-hole structure doubles as exhaust passage and thermometric passage；Preferred electrode（3）Bottom is provided with the oblique perforate of equally distributed ecto-entad.
7. the heat-treatment furnace of composite heating according to claim 3, it is characterised in that the rotary shaft（1）It is connected to form rotating element drive rotating disc with drive device（2）Rotation；It is preferred that the rotary shaft（1）Rotating speed be not higher than 6r/min, preferably 0 r/min -3r/min.
8. the heat-treatment furnace of composite heating according to claim 3, it is characterised in that the heat-treatment furnace is without furnace shell graphitizing furnace, is installed in induction coil（4）The material of inner wall area doubles as inner thermal insulating layer.
9. the heat-treatment furnace of the composite heating according to one of claim 1-8, it is characterised in that the power frequency of the induction coil is 350-3000HZ, heating power 500-2000kW.
10. the heat-treatment furnace of the composite heating according to one of claim 3-8, it is characterised in that the electrode（3）Including an at least electrode group, each electrode group has each of three electrodes, and each of three electrodes of each electrode group is connected with the ABC three-phases of three-phase electricity and heated by electrodes area is formed between each of three electrodes respectively；It is preferred that the heated by electrodes area is located at the top of induction coil heating zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610594942.6A CN107655333B (en) | 2016-07-26 | 2016-07-26 | Composite heating type heat treatment furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610594942.6A CN107655333B (en) | 2016-07-26 | 2016-07-26 | Composite heating type heat treatment furnace |
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| Publication Number | Publication Date |
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| CN107655333A true CN107655333A (en) | 2018-02-02 |
| CN107655333B CN107655333B (en) | 2023-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610594942.6A Active CN107655333B (en) | 2016-07-26 | 2016-07-26 | Composite heating type heat treatment furnace |
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| CN (1) | CN107655333B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708469A (en) * | 2018-12-28 | 2019-05-03 | 王治军 | A kind of aluminium bronze undercurrent type smelting furnace of air-pressure guide |
| CN110671934A (en) * | 2019-10-09 | 2020-01-10 | 西藏克瑞斯科技有限公司 | Multi-chamber shaft furnace type intermediate frequency furnace |
| CN114040522A (en) * | 2021-11-05 | 2022-02-11 | 中国电子科技集团公司第四十八研究所 | Semiconductor equipment heating device |
| CN114234652A (en) * | 2021-12-03 | 2022-03-25 | 汨罗市鑫祥碳素制品有限公司 | Secondary heating type graphite furnace |
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| JPS61158808A (en) * | 1984-12-28 | 1986-07-18 | Toshiba Ceramics Co Ltd | Induction heating graphitization furnace and method for graphitization |
| CN101258376A (en) * | 2006-07-20 | 2008-09-03 | 高桥谦三 | Melting furnace with agitating apparatus and agitating apparatus for melting furnace |
| US20120230902A1 (en) * | 2009-11-20 | 2012-09-13 | Kyojiro Kaneko | Electromagnetic Casting Apparatus for Silicon |
| KR101455851B1 (en) * | 2013-04-24 | 2014-10-28 | 한국생산기술연구원 | Melting furnace system having double crucible |
| CN104556024A (en) * | 2015-02-10 | 2015-04-29 | 新郑市东升炭素有限公司 | Vertical artificial graphite scrap treatment device and treatment process |
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| CN205029900U (en) * | 2015-10-19 | 2016-02-10 | 株洲晨昕中高频设备有限公司 | High temperature is induction coil for graphitizing furnace |
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| JPS55138036A (en) * | 1979-04-13 | 1980-10-28 | Hitachi Chem Co Ltd | Production of graphite-dispersed alloy |
| CN1023610C (en) * | 1989-12-11 | 1994-01-26 | 北京科技大学 | Special smelting process "electroslag induction refining" |
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| US3684446A (en) * | 1970-02-24 | 1972-08-15 | Superior Graphite Co | Method for high-temperature treatment of petroleum coke |
| GB1317144A (en) * | 1970-02-24 | 1973-05-16 | Superior Graphite Co | Method and apparatus for high-temperature treatment of petroleum coke |
| JPS61158808A (en) * | 1984-12-28 | 1986-07-18 | Toshiba Ceramics Co Ltd | Induction heating graphitization furnace and method for graphitization |
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| KR101455851B1 (en) * | 2013-04-24 | 2014-10-28 | 한국생산기술연구원 | Melting furnace system having double crucible |
| CN104556024A (en) * | 2015-02-10 | 2015-04-29 | 新郑市东升炭素有限公司 | Vertical artificial graphite scrap treatment device and treatment process |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708469A (en) * | 2018-12-28 | 2019-05-03 | 王治军 | A kind of aluminium bronze undercurrent type smelting furnace of air-pressure guide |
| CN110671934A (en) * | 2019-10-09 | 2020-01-10 | 西藏克瑞斯科技有限公司 | Multi-chamber shaft furnace type intermediate frequency furnace |
| CN110671934B (en) * | 2019-10-09 | 2021-12-28 | 西藏克瑞斯科技有限公司 | Multi-chamber shaft furnace type intermediate frequency furnace |
| CN114040522A (en) * | 2021-11-05 | 2022-02-11 | 中国电子科技集团公司第四十八研究所 | Semiconductor equipment heating device |
| CN114234652A (en) * | 2021-12-03 | 2022-03-25 | 汨罗市鑫祥碳素制品有限公司 | Secondary heating type graphite furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107655333B (en) | 2023-12-05 |
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