CN109237941A - bell-type furnace - Google Patents
bell-type furnace Download PDFInfo
- Publication number
- CN109237941A CN109237941A CN201811278273.7A CN201811278273A CN109237941A CN 109237941 A CN109237941 A CN 109237941A CN 201811278273 A CN201811278273 A CN 201811278273A CN 109237941 A CN109237941 A CN 109237941A
- Authority
- CN
- China
- Prior art keywords
- air inlet
- inlet pipe
- burner hearth
- bell
- pipeline section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- F27B11/00—Bell-type furnaces
-
- 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
- F27D11/02—Ohmic resistance heating
-
- 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
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/02—Supplying steam, vapour, gases, or liquids
-
- 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
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/02—Supplying steam, vapour, gases, or liquids
- F27D2007/023—Conduits
Abstract
The invention discloses a kind of bell-type furnaces, including the furnace body with burner hearth, for by the closed movable fire door of the fire door of burner hearth and the inlet duct for being used to be passed through protective atmosphere into burner hearth, heating device is installed in burner hearth, inlet duct includes multiple groups successively air intake assembly of the arranged for interval in burner hearth in the horizontal direction, one is formed between two groups of air intake assemblies of arbitrary neighborhood for accommodating the material accommodating space of material, each air intake assembly includes several successively spaced air inlet pipe from top to bottom, the both ends of each air inlet pipe are connected on the inner wall of burner hearth opposite sides, every air inlet pipe is equipped with several for protective atmosphere to be led to the gas outlet of the material accommodating space in the air intake assembly of each material accommodating space two sides, several gas outlets are along air inlet pipe successively arranged for interval.The present invention has many advantages, such as that air-flowing environment and Uniformity of Temperature Field are good in burner hearth, can easily be accommodated control, product quality can be improved.
Description
Technical field
The present invention relates to technical field of heat treatment equipment, and in particular to a kind of bell-type furnace.
Background technique
Bell-type furnace is the commonly used equipment of material heat treatment comprising furnace body and stir yourself fire door, furnace body have burner hearth, furnace
Thorax is equipped with the fire door of downwardly facing opening, and stir yourself fire door is used to close the fire door of burner hearth, can be formed when closed with furnace body close
Envelope connection.It is logical also needing to be arranged protective atmosphere when being heat-treated to the special material such as iron sial to guarantee product quality
Enter device and protective atmosphere be passed through burner hearth, with freeze profile at be full of protective atmosphere environment.The protection gas of existing bell-type furnace
The intake method of atmosphere access equipment is all that air inlet is arranged on the side wall of burner hearth, and protective atmosphere directly squeezes into furnace through air inlet
Thorax is unfavorable for temperature uniformity and atmosphere field uniformity although this intake method structure is simple, easy to maintain, is continuing
In the case of big air inflow, easily cause that the temperature near inboard wall of burner hearth position and admission is lower, protective atmosphere concentration is higher,
And the temperature of burner hearth medium position is higher, protective atmosphere concentration is lower, causes homogeneity of product low.Meanwhile existing bell-type furnace
Heating element is also to be directly installed on inboard wall of burner hearth, makes in entire burner hearth when heating that thermo parameters method is uneven, also be will affect
Product quality and heat treatment efficiency.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the shortcomings of the prior art, provide in a kind of burner hearth air-flowing environment and
The bell-type furnace that Uniformity of Temperature Field is good, can easily be accommodated control, product quality can be improved.
In order to solve the above technical problems, the invention adopts the following technical scheme:
A kind of bell-type furnace, including with burner hearth furnace body, for by the closed movable fire door of the fire door of burner hearth and being used for burner hearth
It is inside passed through the inlet duct of protective atmosphere, heating device is installed in the burner hearth, the inlet duct includes multiple groups along horizontal
Direction successively air intake assembly of the arranged for interval in burner hearth forms one between two groups of air intake assemblies of arbitrary neighborhood and is used for content
The material accommodating space of material, each air intake assembly include several successively spaced air inlet pipe from top to bottom, and the two of each air inlet pipe
End is connected on the inner wall of burner hearth opposite sides, and every air inlet pipe is all provided in the air intake assembly of each material accommodating space two sides
There are several gas outlets for being used to lead to protective atmosphere the material accommodating space, several gas outlets are successively spaced cloth along air inlet pipe
It sets.
As a further improvement of the above technical scheme:
The both ends of the air inlet pipe are connected to the gas source of supply protective atmosphere, and the direction air inlet pipe at both ends is arrived in the middle part of air inlet pipe
The aperture of upper gas outlet reduces one by one.
The air inlet pipe is divided into the first pipeline section being sequentially connected, the second pipeline section, middle part pipeline section, third pipeline section and the 4th pipe
Section, the aperture of the gas outlet on the middle part pipeline section is 3-5mm, and the aperture on first pipeline section and the 4th pipeline section is 7-
The aperture of 10mm, second pipeline section and the gas outlet on third pipeline section is 5-7mm.
Spacing in each air inlet pipe between any two neighboring gas outlet is equal.
Several air inlet pipe of every group of air intake assembly are arranged in same perpendicular, where the air inlet pipe of all air intake assemblies
Perpendicular be parallel to each other.
The both ends of each air inlet pipe are connected with sleeve in a plug-in manner respectively, and resistance is inserted between air inlet pipe and each casing
Only the bolt that air inlet pipe and casing axially relatively move, described sleeve pipe are fixedly connected on the inner wall of burner hearth.
The heating device includes multiple groups successively spaced apart heating component, and between two groups of heating components of arbitrary neighborhood
One and only one described material accommodating space, each heating component include several successively spaced apart heating tubes from top to bottom,
The both ends of each heating tube are connected on the inner wall of burner hearth opposite sides.
The air inlet pipe of air intake assembly and the heating tube of heating component are arranged in same between each adjacent two materials accommodating space
Have in perpendicular, and between any adjacent two heating tube and an only air inlet pipe.
The air inlet pipe and heating tube being located in the same vertical plane are horizontally disposed, and arbitrary neighborhood air inlet pipe and heating tube
Between spacing it is equal.
The heating tube include support tubes and uniformly around be set to support tubes on resistance wire, the two of the support tubes
End is connected separately with insulating part, and the insulating part is connected in the fixing seat being fixed on inboard wall of burner hearth.
Compared with the prior art, the advantages of the present invention are as follows: multiple groups air inlet group is arranged in bell-type furnace of the invention in burner hearth
Part, air intake assembly include several successively spaced air inlet pipe from top to bottom, each air inlet pipe have it is several along air inlet pipe successively
Spaced apart gas outlet, namely there are several gas outlets to be distributed in multiple and different positions in burner hearth, gas in burner hearth can be improved
The uniformity of atmosphere field, and multiple admissions for being distributed in different location of each material accommodating space two sides air intake assembly will protect gas
Atmosphere directly blows to the material positioned at material accommodating space, and protective atmosphere can be made to contact rapidly, adequately with material, is conducive to improve production
Quality；Meanwhile several gas outlets are distributed in multiple and different positions in burner hearth, can avoid only opened up on inboard wall of burner hearth into
Port and lead to the problem that local temperature difference is big in burner hearth, the uniformity of temperature in burner hearth can be greatly improved；In addition, using multiple groups
Control is adjusted conducive to protective atmosphere concentration in burner hearth in air intake assembly air inlet with several gas outlets.
Detailed description of the invention
Fig. 1 is the sectional structure simplified schematic diagram of bell-type furnace.
Fig. 2 is the schematic view of the front view of air inlet pipe.
Fig. 3 is that air inlet pipe is mounted on the schematic view of the front view on inboard wall of burner hearth.
Fig. 4 is that heating tube is mounted on the schematic view of the front view on inboard wall of burner hearth.
Marginal data:
1, furnace body；11, burner hearth；12, material accommodating space；2, movable fire door；3, air inlet pipe；31, gas outlet；4, heating tube；41,
Support tubes；42, resistance wire；101, casing；102, bolt；201, insulating part；202, fixing seat；203, fairlead.
Specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
As depicted in figs. 1 and 2, the bell-type furnace of the present embodiment, including with burner hearth 11 furnace body 1, for by burner hearth 11
The closed movable fire door 2 of fire door and the inlet duct for being passed through protective atmosphere into burner hearth 11, the fire door of burner hearth 11 are opened downward
Mouth is arranged, and is equipped with heating device in burner hearth 11, which includes multiple groups air intake assembly, and multiple groups air intake assembly is along level side
A material for accommodating material is formed to successively arranged for interval in burner hearth 11, between two groups of air intake assemblies of arbitrary neighborhood to hold
12 between emptying, can accommodate a pile material in each material accommodating space 12, each air intake assembly include it is several from top to bottom successively
The both ends of spaced air inlet pipe 3, each air inlet pipe 3 are connected on the inner wall of 11 opposite sides of burner hearth, each material accommodating
Every air inlet pipe 3 is equipped with several for protective atmosphere to be led to the material accommodating space 12 in the air intake assembly of 12 two sides of space
Gas outlet 31, several gas outlets 31 are along the successively arranged for interval of air inlet pipe 3.Multiple groups air inlet group is arranged in the bell-type furnace in burner hearth 11
Part, air intake assembly include several successively spaced air inlet pipe 3 from top to bottom, each air inlet pipe 3 have it is several along air inlet pipe 3 according to
The gas outlet 31 of minor tick arrangement, namely there are several gas outlets 31 to be distributed in multiple and different positions in burner hearth 11, it can be improved
The uniformity of air-flowing environment in burner hearth 11, and 12 two sides air intake assembly of each material accommodating space it is multiple be distributed in different location into
Protective atmosphere is directly blowed to the material positioned at material accommodating space 12 by gas point, can make protective atmosphere and material rapidly, adequately
Contact is conducive to improve product quality；Meanwhile several gas outlets 31 are distributed in multiple and different positions in burner hearth 11, can avoid
Air inlet only is opened up on 11 inner wall of burner hearth and leads to the problem that local temperature difference is big in burner hearth 11, can be greatly improved in burner hearth 11
The uniformity of temperature；In addition, there is the air intake assembly air inlet of several gas outlets 31 using multiple groups, conducive to protecting gas in burner hearth 11
Control is adjusted in atmosphere concentration.
In the present embodiment, the both ends of air inlet pipe 3 are connected to the gas source of supply protective atmosphere, along 3 middle part of air inlet pipe to two
The aperture of gas outlet 31 reduces one by one in the direction air inlet pipe 3 at end.The protective atmosphere of gas source enters air inlet from the both ends of air inlet pipe 3
After pipe 3, due to the loss of air pressure, the air pressure from 3 end of air inlet pipe to 3 middle part of air inlet pipe is gradually reduced, and gas outlet 31
Aperture reduce one by one in the middle part of air inlet pipe 3 to the direction at both ends, can make from each gas outlet 31 blow out tolerance it is almost the same,
To which the tolerance for being passed into each position of burner hearth 11 is relatively uniform, atmosphere evenness in burner hearth 11 can be improved.Preferably, air inlet pipe
3 points are the first pipeline section being sequentially connected, the second pipeline section, middle part pipeline section, third pipeline section and the 4th pipeline section, the outlet on the pipeline section of middle part
The aperture of mouth 31 is 3-5mm, and the aperture on the first pipeline section and the 4th pipeline section is 7-10mm, going out on the second pipeline section and third pipeline section
The aperture of port 31 be 5-7mm, by simulation calculation and actual verification, the gas outlet 31 of this kind of form can preferably guarantee respectively into
Each gas outlet 31 blows out the consistent of tolerance on tracheae 3.It is further preferred that any two neighboring gas outlet in each air inlet pipe 3
Spacing between 31 is equal, can further increase the uniformity of air-flowing environment and temperature field in burner hearth 11, and be conducive to guarantee respectively into
Each gas outlet 31 blows out the consistent of tolerance on tracheae 3.
In the present embodiment, several air inlet pipe 3 of every group of air intake assembly are arranged in same perpendicular, all air intake assemblies
Air inlet pipe 3 where perpendicular be parallel to each other.
In the present embodiment, as shown in figure 3, the both ends of each air inlet pipe 3 are connected with sleeve 101 in a plug-in manner respectively, and
The bolt 102 for preventing air inlet pipe 3 and the axially opposing movement of casing 101, casing 101 are inserted between air inlet pipe 3 and each casing 101
It is fixedly connected on the inner wall of burner hearth 11.Preferably, two bolts 102 at 3 both ends of air inlet pipe are mutually perpendicular to, and avoid air inlet pipe 3
It rotates under the promotion of air-flow.Above-mentioned casing 101 is stainless pipe, is welded on furnace body 1.
In the present embodiment, heating device includes multiple groups successively spaced apart heating component, and two groups of heating of arbitrary neighborhood
One and only one material accommodating space 12 between component, each heating component include it is several from top to bottom successively it is spaced apart plus
The both ends of heat pipe 4, each heating tube 4 are connected on the inner wall of 11 opposite sides of burner hearth.Multiple groups are set successively in burner hearth 11
Spaced apart heating component, each heating component includes several successively spaced apart heating tubes 4 from top to bottom, namely is had several
Root heating tube 4 is distributed in each position in burner hearth 11, and the uniformity in temperature field in burner hearth 11 can be improved；Meanwhile each material holds
12 two sides all have heating component between emptying, and several heating tubes 4 of heating component are formed in the side of material accommodating space 12 divides
The heating efficiency and heating uniformity to material can be improved in the heat source of different location in cloth；In addition, there is several add using multiple groups
The heating component of heat pipe 4 is heated, and control is adjusted conducive to temperature in burner hearth 11.
In the present embodiment, the air inlet pipe 3 and heating component of air intake assembly adds between each adjacent two materials accommodating space 12
Heat pipe 4 is arranged in same perpendicular, and is had between any adjacent two heating tube 4 and an only air inlet pipe 3.This kind into
The arrangement of tracheae 3 and heating tube 4, the gas and material for blowing out gas outlet 31 in each air inlet pipe 3 can obtain quickly,
The uniformity of temperature in heat exchanger effectiveness and burner hearth 11 can be improved in relatively uniform heating.
In the present embodiment, the air inlet pipe 3 and heating tube 4 being located in the same vertical plane are horizontally disposed, and arbitrary neighborhood
Spacing between air inlet pipe 3 and heating tube 4 is equal, the temperature after being heated the gas that gas outlet 31 is blown out on various inlet pipe 3
It spends almost the same, can be further improved the uniformity of temperature in burner hearth 11.
In the present embodiment, as shown in figure 4, heating tube 4 is including support tubes 41 and uniformly around in support tubes 41
Resistance wire 42, the both ends of support tubes 41 are connected separately with insulating part 201, and insulating part 201, which is connected to, is fixed on 11 inner wall of burner hearth
On fixing seat 202 on.Support tubes 41 are connected in fixing seat 202 by insulating part 201, can avoid short circuit accident, are improved
Bell-type furnace reliability.Specifically, fixing seat 202 is mounted on furnace body 1 by bolt, there is the cylindrical portion for protruding into burner hearth 11,
Insulating part 201 is inserted in the cylindrical portion of fixing seat 202.Insulating part 201 is cylindrical in shape, and the end of support tubes 41 is inserted in tubular
In insulating part 201.The fairlead 203 stretched in tubular insulating part 201 from outside furnace body 1, resistance wire are additionally provided on furnace body 1
42 connect across tubular insulating part 201 and fairlead 203 with External cable.
In the present embodiment, the material of air inlet pipe 3 and support tubes 41 preferably uses corundum-mullite material, and thermal shock resistance is excellent
It is good, it can not be damaged in prolonged and repeated heating and cooling process.Insulating part 201 preferably uses ceramic material product.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example.To those of ordinary skill in the art, obtained improvement and change in the case where not departing from the technology of the present invention concept thereof
It changes and also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of bell-type furnace, including with burner hearth (11) furnace body (1), for by the closed movable fire door of the fire door of burner hearth (11)
(2) and for the interior inlet duct for being passed through protective atmosphere of burner hearth (11), the burner hearth (11) is interior to be equipped with heating device, special
Sign is: the inlet duct includes multiple groups successively air intake assembly of the arranged for interval in burner hearth (11) in the horizontal direction, arbitrarily
One is formed between two adjacent groups air intake assembly for accommodating the material accommodating space (12) of material, each air intake assembly includes several
From top to bottom successively spaced air inlet pipe (3), the both ends of each air inlet pipe (3) are connected to burner hearth (11) opposite sides
On inner wall, every air inlet pipe (3) is equipped with several for that will protect gas in the air intake assembly of each material accommodating space (12) two sides
Atmosphere leads to the gas outlet (31) of the material accommodating space (12), and several gas outlets (31) are along air inlet pipe (3) successively arranged for interval.
2. bell-type furnace according to claim 1, it is characterised in that: protect gas with supply in the both ends of the air inlet pipe (3)
The gas source of atmosphere is connected to, and is reduced one by one in the middle part of air inlet pipe (3) to the aperture of gas outlet (31) in the direction air inlet pipe (3) at both ends.
3. bell-type furnace according to claim 2, it is characterised in that: the air inlet pipe (3) is divided into the first pipe being sequentially connected
Section, the second pipeline section, middle part pipeline section, third pipeline section and the 4th pipeline section, the aperture of the gas outlet (31) on the middle part pipeline section are 3-
5mm, the aperture on first pipeline section and the 4th pipeline section are 7-10mm, the gas outlet on second pipeline section and third pipeline section
(31) aperture is 5-7mm.
4. bell-type furnace according to claim 2, it is characterised in that: any two neighboring gas outlet on each air inlet pipe (3)
(31) spacing between is equal.
5. bell-type furnace according to claim 1, it is characterised in that: several air inlet pipe (3) of every group of air intake assembly are arranged in
In same perpendicular, the perpendicular where the air inlet pipe (3) of all air intake assemblies is parallel to each other.
6. bell-type furnace according to claim 1, it is characterised in that: the both ends of each air inlet pipe (3) connect in a plug-in manner respectively
It is connected to sleeve (101), and is inserted between air inlet pipe (3) and each casing (101) and prevents air inlet pipe (3) and casing (101) axis
To the bolt (102) of relative movement, described sleeve pipe (101) is fixedly connected on the inner wall of burner hearth (11).
7. bell-type furnace according to any one of claim 1 to 6, it is characterised in that: the heating device include multiple groups according to
The heating component of minor tick arrangement, and one and only one described material accommodating space between two groups of heating components of arbitrary neighborhood
(12), each heating component includes several successively spaced apart heating tubes (4) from top to bottom, the both ends difference of each heating tube (4)
It is connected on the inner wall of burner hearth (11) opposite sides.
8. bell-type furnace according to claim 7, it is characterised in that: air inlet group between each adjacent two materials accommodating space (12)
The air inlet pipe (3) of part and the heating tube (4) of heating component are arranged in same perpendicular, and any adjacent two heating tube
(4) have between and an only air inlet pipe (3).
9. bell-type furnace according to claim 8, it is characterised in that: the air inlet pipe (3) that is located in the same vertical plane and add
Heat pipe (4) is horizontally disposed, and the spacing between arbitrary neighborhood air inlet pipe (3) and heating tube (4) is equal.
10. bell-type furnace according to claim 7, it is characterised in that: the heating tube (4) include support tubes (41) and
The even resistance wire (42) being set around on support tubes (41), the both ends of the support tubes (41) are connected separately with insulating part
(201), the insulating part (201) is connected in the fixing seat (202) being fixed on burner hearth (11) inner wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811278273.7A CN109237941A (en) | 2018-10-30 | 2018-10-30 | bell-type furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811278273.7A CN109237941A (en) | 2018-10-30 | 2018-10-30 | bell-type furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109237941A true CN109237941A (en) | 2019-01-18 |
Family
ID=65079518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811278273.7A Pending CN109237941A (en) | 2018-10-30 | 2018-10-30 | bell-type furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109237941A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109870028A (en) * | 2019-03-19 | 2019-06-11 | 肇庆市昊达机电设备有限公司 | A kind of elevator electrical furnace |
| CN112179130A (en) * | 2020-09-30 | 2021-01-05 | 上海宝钢磁业有限公司 | Bell jar furnace with high-temperature uniformity |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58197724A (en) * | 1982-05-12 | 1983-11-17 | Toshiba Corp | Gas introducing tube for vapor growth apparatus |
| US20010025605A1 (en) * | 2000-03-28 | 2001-10-04 | Nec Corporation | Air-tight vessel equipped with gas feeder uniformly supplying gaseous component around plural wafers |
| CN2687596Y (en) * | 2004-01-15 | 2005-03-23 | 湖南丰业科技有限责任公司 | Preheat porous intake strusture of heating silicon-carbon rod for real-time atmosphere furnace |
| CN202734516U (en) * | 2012-08-16 | 2013-02-13 | 南京科达新控仪表有限公司 | Feedforward type atmosphere control system for bell jar furnace |
| CN103267421A (en) * | 2013-05-28 | 2013-08-28 | 王子金 | Resistance heating furnace |
| CN209116748U (en) * | 2018-10-30 | 2019-07-16 | 湖南金炉科技股份有限公司 | Bell-type furnace |
-
2018
- 2018-10-30 CN CN201811278273.7A patent/CN109237941A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58197724A (en) * | 1982-05-12 | 1983-11-17 | Toshiba Corp | Gas introducing tube for vapor growth apparatus |
| US20010025605A1 (en) * | 2000-03-28 | 2001-10-04 | Nec Corporation | Air-tight vessel equipped with gas feeder uniformly supplying gaseous component around plural wafers |
| CN2687596Y (en) * | 2004-01-15 | 2005-03-23 | 湖南丰业科技有限责任公司 | Preheat porous intake strusture of heating silicon-carbon rod for real-time atmosphere furnace |
| CN202734516U (en) * | 2012-08-16 | 2013-02-13 | 南京科达新控仪表有限公司 | Feedforward type atmosphere control system for bell jar furnace |
| CN103267421A (en) * | 2013-05-28 | 2013-08-28 | 王子金 | Resistance heating furnace |
| CN209116748U (en) * | 2018-10-30 | 2019-07-16 | 湖南金炉科技股份有限公司 | Bell-type furnace |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109870028A (en) * | 2019-03-19 | 2019-06-11 | 肇庆市昊达机电设备有限公司 | A kind of elevator electrical furnace |
| CN112179130A (en) * | 2020-09-30 | 2021-01-05 | 上海宝钢磁业有限公司 | Bell jar furnace with high-temperature uniformity |
| CN112179130B (en) * | 2020-09-30 | 2022-07-15 | 上海宝钢磁业有限公司 | Bell jar furnace with high-temperature uniformity |
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