CN202442590U - Crucible type high-temperature salt-bath heat-treatment electric furnace - Google Patents
Crucible type high-temperature salt-bath heat-treatment electric furnace Download PDFInfo
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- CN202442590U CN202442590U CN2012200489550U CN201220048955U CN202442590U CN 202442590 U CN202442590 U CN 202442590U CN 2012200489550 U CN2012200489550 U CN 2012200489550U CN 201220048955 U CN201220048955 U CN 201220048955U CN 202442590 U CN202442590 U CN 202442590U
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Abstract
The utility model provides a crucible type high-temperature salt-bath heat-treatment electric furnace, comprising a crucible. A furnace body is coated outside the crucible and comprises a furnace shell, a fire-resistant thermal-insulation layer containing a fire-resistant thermal-insulation material, and a resistance heating system which are arranged in sequence from outside to inside; an upper cover board is arranged at the upper part of the furnace body; a furnace cover covers the upper cover board, and the bottom part of the furnace cover is made of heat-resistant steel; a convex part is arranged at the center of the bottom of the furnace cover and extends inside the crucible when the electric furnace works; the periphery of the furnace cover and the upper cover board are in sealed contact; the crucible is made of heat-resistant steel and is supported on a fire-resistant brick at a furnace mouth and the upper cover board through a flange at the top of the crucible at a room temperature; and after a temperature rises, the expansion size of the crucible is increased, and the crucible is supported by a fire-resistant brick building block below the crucible. The crucible type high-temperature salt-bath heat-treatment electric furnace provided by the utility model does not pollute the thermal insulation material of the furnace body, a salt bath is not polluted by the material of the furnace body; and the electric furnace has a good thermal insulation property and is reliable in operation.
Description
Technical field
The utility model relates to the heat treatment electric furnace, is specially a kind of crucible type high-temperature salt bath heat treatment electric furnace, belongs to the material heat treatment equipment technical field.
Background technology
Crucible type salt bath heat treatment electric furnace is salt bath thermo-chemical treatment and conventional heat treated common equipment; Its principle is that extraordinary heat treatment is placed in the crucible with inorganic salts; Resistive heating system and flame-proof thermal insulation material through crucible is outer are used salt bath with the crucible heating and with inorganic salts fusing formation thermo-chemical treatment or conventional heat treatment; Place salt bath to the workpiece that will handle again, so workpiece is carried out surface chemistry heat treatment or conventional heat treatment, below be referred to as heat treatment.What use often at present is low temperature salt-bath heat treatment electric furnace in the crucible type, and this type of stove requires lower because of treatment temperature low (generally being below 850 ℃) to crucible material and fire door insulation.For crucible type High Temperature Salt Bath Furnace (more than 850 ℃), as continue to use said structure, the fire door heat radiation is very fast, also can make the non-uniform temperature in the crucible, causes the thermal treatment quality of workpiece wayward.As adopt traditional flame-proof thermal insulation material making flat pattern or arch form bell to be incubated, and bell is generally made by flame-proof thermal insulation material on the one hand, and the salt bath flue gas can corrode flame-proof thermal insulation material, finally falls in the crucible salt bath, pollutes salt bath, influences thermal treatment quality; The space is excessive between bell and the salt bath on the other hand, and thermal loss is big in each operating process, and furnace temperature is difficult to keep and reach the setting requirement as early as possible, influences thermal treatment quality.Conventional crucibles formula salt bath furnace bell is supported on the cover plate of upper of furnace body in addition; Crucible material intensity was higher when temperature was low; Through selecting suitable crucible material and wall thickness can guarantee that crucible uses for a long time, but all steel strengths can lower greatly when high temperature, at high temperature work long hours; The weight of crucible deadweight, salt bath weight and workpiece to be machined all can make crucible at high temperature stressed and cause the crucible gross distortion, and the equipment that influences uses for a long time.Be supported on furnace bottom like crucible, when crucible was higher, crucible can extend because of expanded by heating under the high temperature, was easy to withstand bell, influenced fire door sealing and insulation; Also promising guarantee fire door sealing; The most handy refractory material sealing between upper of furnace body cover plate and bell; But refractory material can with a small amount of liquid inorganic salt reaction of splatter in the operating process, long-time use can make the furnace insulation damage of material, reduces the heat-insulating property of equipment.
The utility model content
The technical problem that the utility model solved is to provide a kind of crucible type high-temperature salt bath heat treatment electric furnace.It is that the heat treated characteristics of salt bath are designed the bell that links to each other with body of heater, crucible structure and with upper-part during according to high temperature; To guarantee that heat treatment temperature is even; And eliminate influencing each other between salt bath and body of heater, the bell; Guarantee the long-time use of equipment, thereby solve the shortcoming in the above-mentioned background technology.
The technical problem that the utility model solved adopts following technical scheme to realize:
A kind of crucible type high-temperature salt bath heat treatment electric furnace; Comprise crucible; Said crucible is wrapped with body of heater, and said body of heater comprises the furnace shell that sets gradually from outside to inside, the refractory insulating layer that contains flame-proof thermal insulation material, resistive heating system, and said upper of furnace body is provided with upper cover plate; Be covered with the bell that the bottom is processed by heat resisting steel on the said upper cover plate; The central authorities of said bell bottom are provided with projection, and said projection stretches into said crucible when work inner, and the periphery of said bell contacts with said upper cover plate sealing; Said crucible is processed by heat resisting steel, and the flange through its top under the normal temperature is supported on fire door refractory brick and the said upper cover plate, and the temperature back crucible dilation dimension elongation that raises is supported by the crucible refractory brick building block that is positioned at below the said crucible.
In the utility model, said body of heater is provided with and opens and closes the bell device.
Beneficial effect
The utility model can not pollute the furnace insulation material, and the body of heater material can not pollute salt bath yet, and good heat insulating, reliable.
Description of drawings
Fig. 1 is a kind of structure chart of crucible type high-temperature salt bath heat treatment electric furnace.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1; A kind of structure chart of crucible type high-temperature salt bath heat treatment electric furnace, a kind of crucible type high-temperature salt bath heat treatment electric furnace comprises crucible 4; Said crucible 4 is wrapped with body of heater; Said body of heater comprises the furnace shell 5 that sets gradually from outside to inside, the refractory insulating layer 6 that contains flame-proof thermal insulation material, resistive heating system 8, and said upper of furnace body is provided with upper cover plate 3, is covered with the bell 1 that the bottom is processed by heat resisting steel on the said upper cover plate 3.The central authorities of said bell 1 bottom are provided with projection, and said projection stretches into said crucible 4 inside when work, and the periphery of said bell 1 contacts with said upper cover plate 3 sealings, so realizes the sealing insulation between bell and body of heater.Said crucible 4 is processed by heat resisting steel, and the flange through its top under the normal temperature is supported on fire door refractory brick 2 and the said upper cover plate 3, and the temperature back crucible dilation dimension elongation that raises is supported by the crucible refractory brick building block 11 that is positioned at below the said crucible.
In the utility model, said body of heater is provided with and opens and closes bell device 9.Crucible refractory brick building block 11 is built into by high-intensity alumina firebrick, leaves the gap in the middle of the building block, realizes that building block and crucible bottom temperature are even.Be penetrated with thermocouple 10 on the said body of heater, heat treatment places in the crucible 4 with extraordinary inorganic salts, forms fused salt 7 through resistive heating system 8 heat fused inorganic salts.Temperature of molten salt is through thermocouple 10 external temperature-controlling cabinet controls.Realize the operation that part to be processed was put into and taken out to heat treatment process by opening and closing bell device 9.Furnace insulation is realized by refractory insulating layer 6.
The operation principle of the utility model is following: place the heat treated extraordinary inorganic salts material of needs in the crucible 4; Connect resistive heating system 8 through temperature-controlling cabinet; The utility model is heated up reach design temperature; By the time it is for use that inorganic salts or fused salt 7 have melted when also temperature is even, crucible 4 has extended and has been supported by crucible refractory brick building block 11 at this moment.The workpiece dress that will heat-treat is hung on the extraordinary suspender, opens bell 1, and the workpiece that off-the-shelf lifting is good is put into crucible 4 together; Heat treatment fused salt in institute's adding crucible is guaranteed all workpiece that will process of submergence, covers bell, so implements conventional heat treatment heating or thermo-chemical treatment operation; Dispose; Open bell 1, take out suspender and on workpiece, promptly accomplish salt bath heat treatment heating process.
More than show and described basic principle of the utility model and the advantage of principal character and the utility model; The technical staff of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described, under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications; These variations and improvement all fall in the utility model scope that requires protection, and the utility model requires protection domain to be defined by appending claims and equivalent thereof.
Claims (2)
1. crucible type high-temperature salt bath heat treatment electric furnace; Comprise crucible, said crucible is wrapped with body of heater, and said body of heater comprises the furnace shell that sets gradually from outside to inside, the refractory insulating layer that contains flame-proof thermal insulation material, resistive heating system; Said upper of furnace body is provided with upper cover plate; Be covered with the bell that the bottom is processed by heat resisting steel on the said upper cover plate, it is characterized in that, the central authorities of said bell bottom are provided with projection; Said projection stretches into said crucible when work inner, and the periphery of said bell contacts with said upper cover plate sealing; Said crucible is processed by heat resisting steel, and the flange through its top under the normal temperature is supported on fire door refractory brick and the said upper cover plate, and the temperature back crucible dilation dimension elongation that raises is supported by the crucible refractory brick building block that is positioned at below the said crucible.
2. a kind of crucible type high-temperature salt bath heat treatment electric furnace according to claim 1 is characterized in that, said body of heater is provided with and opens and closes the bell device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200489550U CN202442590U (en) | 2012-02-16 | 2012-02-16 | Crucible type high-temperature salt-bath heat-treatment electric furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200489550U CN202442590U (en) | 2012-02-16 | 2012-02-16 | Crucible type high-temperature salt-bath heat-treatment electric furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202442590U true CN202442590U (en) | 2012-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200489550U Expired - Fee Related CN202442590U (en) | 2012-02-16 | 2012-02-16 | Crucible type high-temperature salt-bath heat-treatment electric furnace |
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| Country | Link |
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| CN (1) | CN202442590U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940231A (en) * | 2013-01-21 | 2014-07-23 | 洛阳华旭利尔电炉有限公司 | High-temperature crucible experiment furnace |
| CN104764324A (en) * | 2015-04-02 | 2015-07-08 | 连云港神汇硅材料科技有限公司 | Silicon dioxide high-temperature phase-change furnace |
| CN105043099A (en) * | 2015-07-31 | 2015-11-11 | 苏州市玄天环保科技有限公司 | Heat-isolation heat-preserving smelting furnace |
| CN107475777A (en) * | 2017-07-14 | 2017-12-15 | 中国科学院上海光学精密机械研究所 | High-accuracy oil bath annealing furnace for KDP crystalloids |
-
2012
- 2012-02-16 CN CN2012200489550U patent/CN202442590U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940231A (en) * | 2013-01-21 | 2014-07-23 | 洛阳华旭利尔电炉有限公司 | High-temperature crucible experiment furnace |
| CN104764324A (en) * | 2015-04-02 | 2015-07-08 | 连云港神汇硅材料科技有限公司 | Silicon dioxide high-temperature phase-change furnace |
| CN105043099A (en) * | 2015-07-31 | 2015-11-11 | 苏州市玄天环保科技有限公司 | Heat-isolation heat-preserving smelting furnace |
| CN107475777A (en) * | 2017-07-14 | 2017-12-15 | 中国科学院上海光学精密机械研究所 | High-accuracy oil bath annealing furnace for KDP crystalloids |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20160216 |