CN203833975U - Vacuum annealing furnace - Google Patents
Vacuum annealing furnace Download PDFInfo
- Publication number
- CN203833975U CN203833975U CN201420226411.8U CN201420226411U CN203833975U CN 203833975 U CN203833975 U CN 203833975U CN 201420226411 U CN201420226411 U CN 201420226411U CN 203833975 U CN203833975 U CN 203833975U
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- CN
- China
- Prior art keywords
- flue
- heating unit
- furnace
- annealing furnace
- vacuum annealing
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- 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.)
- Withdrawn - After Issue
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Abstract
The utility model relates to a vacuum annealing furnace which comprises a furnace pipe and a furnace cover, wherein a seal ring is arranged between the furnace cover and furnace pipe to form a vacuum inner chamber; a first heating element is installed on the outer wall or inner wall and the outer side of the bottom of the furnace pipe; the furnace pipe is in a cylindrical structure with an upward opening; the middle part of the furnace pipe is provided with a cylindrical pipe with a downward opening; the opening of the cylindrical pipe and the bottom middle part of the furnace pipe form an arc transition joint to form an annular discharge region; and the inner chamber of the cylindrical pipe is provided with a second heating element and a temperature-adjusting device thereof. The vacuum annealing furnace can be used for heating the annealed workpiece from the external region and the middle region of the workpiece so as to implement two-way heat transfer, thereby greatly shortening the heat transfer distance between the annealed workpieces; and the workpieces are integrally heated uniformly, thereby enhancing the quality of the integrally annealed workpieces.
Description
Technical field
The utility model relates to annealing of metal materials equipment technical field, particularly relates to a kind of vacuum annealing furnace.
Background technology
Vacuum heat treatment refers to the heat treatment process that workpiece heats, is incubated or lower the temperature under vacuum state.Vacuum heat treatment can realize the thermal treatment process that nearly all conventional thermal treatment can relate to, but thermal treatment quality improves greatly.With conventional heat treatment phase ratio, vacuum heat treatment can realize non-oxidation simultaneously, without decarburization, without carburizing, thereby reaches the effect that workpiece surface light purifies.
The vacuum annealing furnace that traditional metallic substance thermal treatment adopts has internal heat type and external-heat, and so-called internal heat type refers to that heating unit is installed on to inboard wall of furnace directly to be heated workpiece; External-heat refers to that heating unit is installed on to furnace outer wall to be heated workpiece across furnace wall.The heat transfer path of these two kinds of forms is all the type of heating being conducted heat to center gradually by workpiece circumferential perimeter, when in order to improve output, when flue is done greatlyr, its heat transfer distances is also longer, such as: more than when flue intracavity diameter is above to φ 900mm greatly, its heat transfer distances reaches 400mm, if heat treatment of workpieces temperature is 800 DEG C, namely in the time that around outside, workpiece temperature reaches 800 DEG C, center workpiece temperature may only have 500 DEG C of left and right, in the time that center workpiece temperature is slowly raised to 800 DEG C, now around outside, workpiece temperature has been incubated more than two hours at 800 DEG C, periphery workpiece and center workpiece are the soaking time of 800 DEG C like this, the temperature difference is just made a world of difference, cause the thermal effectiveness of each workpiece reality also just to make a world of difference.But in actual applications, the thermal effectiveness that always requires each workpiece in same stove is consistent, existing vacuum annealing furnace is difficult to reach this effect.
Summary of the invention
The purpose of this utility model is to provide a kind of vacuum annealing furnace, it can heat annealing workpiece from the central region of the outer peripheral areas of workpiece and workpiece simultaneously, realize two-way heat transfer, greatly shorten the heat transfer distances between annealing workpiece, each whole workpiece is heated evenly, and has improved the quality of integrally annealed workpiece.
The technical solution that the utility model proposes is such: a kind of vacuum annealing furnace, comprise flue 1, bell 2, heating unit and temperature control equipment thereof, between bell 2 and flue 1, be provided with sealing-ring, form vacuum lumen, be provided with on the outer wall or inwall and flue 1 bottom outside that the 1st heating unit 31 is arranged on flue 1, the barrel-like structure that described flue 1 is opening upwards, the middle part of this flue 1 is provided with the tubbiness inner bag 4 that Open Side Down, between the middle part, the end of the peristome of tubbiness inner bag 4 and flue 1, arc transition is connected, form annular blowing district 5, be installed with the 2nd heating unit 32 and temperature control equipment thereof at the inner chamber of tubbiness inner bag 4.
Tubbiness inner bag 4 is located at the central area of flue 1, and its axis overlaps with the axis of described flue 1.In the outside of flue 1 courage wall or inner side, flue 1 bottom outside subregion arranged the 1st heating unit 31 and one group of thermopair 6, with corresponding measuring and controlling temp device composition the 1st temp of heating element setting device, one group of thermopair 6 is equipped with in outside or inner side at tubbiness inner bag 4 courage walls, with the 2nd heating unit 32 and corresponding measuring and controlling temp device composition the 2nd temp of heating element setting device.Described the 1st heating unit 31 and the 2nd heating unit 32 all adopt nichrome wire.
Substantive features of the present utility model are to set up heating chamber structure at flue middle part, make vacuum annealing furnace except from flue outside or inner side with and two hot faces of bottom, also increase by a heating unit at the central part of annealing workpiece simultaneously, make annealing workpiece be changed into also heat transfer (being two-way heat transfer) to the periphery of center in conducting heat toward center in periphery from traditional periphery toward the unidirectional heat transfer in center, heat transfer distances foreshortens to original 1/2nd or shorter greatly like this, effectively shorten the heat-up time that annealing workpiece reaches holding temperature, in having dwindled in blowing district, temperature head between outer workpiece.Because each workpiece heat transfer distances is short, be heated evenly, improved widely the annealing quality of whole furnaceman's part.Simultaneously, this vacuum annealing furnace adopts the correspondence of multistage heating element and thermopair to arrange, and has improved the temperature monitoring precision of annealing furnace inside, by independently controlling the heating unit thermal value of adjusting correspondence position, workpiece in annealing furnace is heated evenly, thereby has ensured the annealing quality of workpiece.Vacuum annealing furnace compact construction of the present utility model, it is rapid, even that heating is conducted heat, and temperature control precision is high, and workpiece annealing quality is good.Be specially adapted to the anneal of silicon steel sheet core.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of vacuum annealing furnace of an embodiment of the utility model.
Fig. 2 is that Fig. 1 removes the schematic top plan view after bell.
Fig. 3 is the STRUCTURE DECOMPOSITION figure of vacuum annealing furnace shown in Fig. 1.
In figure: 1, flue; 2, bell; 31, the 1st heating unit; 32, the 2nd heating unit; 4, tubbiness inner bag; 5, annular blowing region; 6, thermopair.
Embodiment
By embodiment below, the utility model is further elaborated.
As Figure 1-3, a kind of vacuum annealing furnace is made up of flue 1, bell 2, the 1st heating unit 31 and temperature control equipment thereof, the 2nd heating unit 32 and temperature control equipment thereof and tubbiness inner bag 4.Between bell 2 and flue 1, be provided with sealing-ring, make to form vacuum lumen in stove, its vacuum tightness can reach 1～0.001pa.The 1st heating unit 31 is arranged on the outer wall or inwall and flue 1 bottom outside of flue 1, the barrel-like structure that flue 1 is opening upwards, the middle part of this flue 1 is provided with the tubbiness inner bag 4 that Open Side Down, between the middle part, the end of the peristome of this tubbiness inner bag 4 and flue 1, arc transition is connected, form annular blowing district 5, be installed with the 2nd heating unit 32 and temperature control equipment thereof at the inner chamber of tubbiness inner bag 4.
Tubbiness inner bag 4 is located at the central area of flue 1, and these tubbiness inner bag 4 axis overlap with the axis of flue 1.The outside of flue 1 courage wall or inner side, flue 1 bottom outside Fen Sange district have arranged the 1st heating unit 31 and one group of thermopair 6, with corresponding measuring and controlling temp device composition the 1st temp of heating element setting device.The 1st heating unit 31 in the courage wall outside of flue 1 or inner side and flue 1 bottom outside arranged 3rd district, upper, middle and lower the 1st heating unit 31, the height of the interior workpiece that fills of the height of middle district the 1st heating unit 31 and stove matches.Flue 1 bottom outside is equipped with one section of the 1st heating unit 31, merges into a district with the 1st heating unit 31 of flue 1 inferior segment, shares one group of thermopair 6.One group of thermopair 6 is equipped with in the outside of tubbiness inner bag 4 courage walls or inner side, with the 2nd heating unit 32 and corresponding measuring and controlling temp device composition the 2nd temp of heating element setting device.The 1st heating unit 31 and the 2nd heating unit 32 all adopt nichrome wire.
Described in the present embodiment, vacuum annealing furnace is of a size of flue 1 internal diameter and is about φ 900mm, and flue is about 1500mm deeply, and tubbiness inner bag 4 diameters are about φ 340mm; The 1st heating unit 31-arrangement mode is flue 1 Fen Sange district, outside (flue 1 bottom and flue 1 lower bottom part are combined into inferior segment, flue 1 Wei Zhong district, middle part, flue 1 Wei Shang district, top), tubbiness inner bag 4 the 2nd heating unit 32 that fills is provided with 3rd district, upper, middle and lower equally corresponding to flue 1, and flue 1, inner bag 4 Zhong Ge district heating powers divide Bouyei's flue size different and different (adopting evenly or uneven distribution).The independent temperature control in each district.The thermometric end of thermopair 6 extend into heated workpiece wall.
Claims (5)
1. a vacuum annealing furnace, comprise flue (1), bell (2), heating unit and temperature control equipment thereof, between bell (2) and flue (1), be provided with sealing-ring, form vacuum lumen, be provided with on the outer wall or inwall and flue (1) bottom outside that the 1st heating unit (31) is arranged on flue (1), it is characterized in that: the barrel-like structure that described flue (1) is opening upwards, the middle part of this flue (1) is provided with the tubbiness inner bag (4) that Open Side Down, between the middle part, the end of the peristome of described tubbiness inner bag (4) and described flue (1), arc transition is connected, form annular blowing district (5), be installed with the 2nd heating unit (32) and temperature control equipment thereof at the inner chamber of described tubbiness inner bag (4).
2. vacuum annealing furnace according to claim 1, is characterized in that: the axis of described tubbiness inner bag (4) overlaps with the axis of described flue (1).
3. vacuum annealing furnace according to claim 1, it is characterized in that: the outside of described flue (1) courage wall or inner side, flue (1) bottom outside subregion have been arranged the 1st heating unit (31) and one group of thermopair (6), with corresponding measuring and controlling temp device composition the 1st temp of heating element setting device.
4. vacuum annealing furnace according to claim 1, it is characterized in that: one group of thermopair (6) is equipped with in outside or the inner side of described tubbiness inner bag (4) courage wall, with the 2nd heating unit (32) and corresponding measuring and controlling temp device composition the 2nd temp of heating element setting device.
5. vacuum annealing furnace according to claim 1, is characterized in that: described the 1st heating unit (31) and the 2nd heating unit (32) all adopt nichrome wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420226411.8U CN203833975U (en) | 2014-05-06 | 2014-05-06 | Vacuum annealing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420226411.8U CN203833975U (en) | 2014-05-06 | 2014-05-06 | Vacuum annealing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203833975U true CN203833975U (en) | 2014-09-17 |
Family
ID=51511842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420226411.8U Withdrawn - After Issue CN203833975U (en) | 2014-05-06 | 2014-05-06 | Vacuum annealing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203833975U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103937944A (en) * | 2014-05-06 | 2014-07-23 | 佛山市南海矽钢铁芯制造有限公司 | Vacuum annealing furnace |
-
2014
- 2014-05-06 CN CN201420226411.8U patent/CN203833975U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103937944A (en) * | 2014-05-06 | 2014-07-23 | 佛山市南海矽钢铁芯制造有限公司 | Vacuum annealing furnace |
| CN103937944B (en) * | 2014-05-06 | 2016-05-18 | 佛山市南海矽钢铁芯制造有限公司 | A kind of vacuum annealing furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140917 Effective date of abandoning: 20160518 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |