CN201793649U - Heat treatment furnace - Google Patents
Heat treatment furnace Download PDFInfo
- Publication number
- CN201793649U CN201793649U CN2010202519176U CN201020251917U CN201793649U CN 201793649 U CN201793649 U CN 201793649U CN 2010202519176 U CN2010202519176 U CN 2010202519176U CN 201020251917 U CN201020251917 U CN 201020251917U CN 201793649 U CN201793649 U CN 201793649U
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- Prior art keywords
- heat treatment
- shell
- furnace
- treatment furnace
- base plate
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- Expired - Lifetime
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 88
- 230000004888 barrier function Effects 0.000 claims description 10
- 229910052573 porcelain Inorganic materials 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 15
- 229910001220 stainless steel Inorganic materials 0.000 description 10
- 239000010935 stainless steel Substances 0.000 description 10
- 238000003466 welding Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 229920000742 Cotton Polymers 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000007669 thermal treatment Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- UQMRAFJOBWOFNS-UHFFFAOYSA-N butyl 2-(2,4-dichlorophenoxy)acetate Chemical compound CCCCOC(=O)COC1=CC=C(Cl)C=C1Cl UQMRAFJOBWOFNS-UHFFFAOYSA-N 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 210000001364 upper extremity Anatomy 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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- Furnace Details (AREA)
Abstract
The utility model discloses a heat treatment furnace, which comprises an outer casing, a bottom board, a furnace cover, at least one heater, at least one fixed furnace base and at least one movable support, wherein the bottom board is disposed at the bottom of the outer casing, the furnace cover is disposed on the top of the outer casing, the heaters are installed on the inner walls of the outer casing and/or the bottom board, the fixed furnace bases are fixedly installed on the outer wall of the bottom board, and the movable supports are detachably installed on the outer wall of the outer casing. The heat treatment furnace can meet various heat treatment requirements of various types of small and medium sized pressure vessels or components.
Description
Technical field
The utility model relates to a kind of Equipment for Heating Processing, particularly relates to a kind of heat treatment furnace.
Background technology
Along with the maximization of pressurized vessel, in order to satisfy the needs of pressurized vessel complete heat treatment, a lot of heavy pressure vessel manufacturers have all been built large-scale fuel heat treatment furnace.But, these Large Furnace can only satisfy the needs of large pressurized vessel, utilization ratio is lower, and some component of large pressurized vessel also need to carry out intermediate heat treatment or postweld heat treatment in manufacturing processed simultaneously, and these are not suitable for heat-treating in Large Furnace.For middle small vessels because the needs of economic cause, material category, technological specification and production schedule, also inapplicable in Large Furnace separately or join the furnace treatment reason.Also purchase in the market less than the suitable heat treated equipment of above product.In addition, large-scale heat treatment furnace equipment also is not suitable for partial heat treatments such as the circumferential weld, U-shaped pipe bend loss of tube-to-tube sheet connection joint welding, tube sheet and cylindrical shell, existing heat treatment mode adopts tracklayer heater and insulating cotton to be fixed on needs heat treated part, so not only influence production efficiency, labour intensity is higher, and the easy scaling loss of tracklayer heater used of partial heat treatment.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of heat treatment furnace, with the middle-size and small-size pressurized vessel that satisfies various ways or the various thermal treatment needs of parts.
To achieve these goals, the utility model provides a kind of heat treatment furnace, comprising: shell; Base plate is arranged on the bottom of described shell; Bell is arranged on the top of described shell; At least one well heater is installed on the inwall of described shell and/or base plate; At least one stationary furnace seat is installed on the outer wall of described base plate; And at least one shifting bearing, be installed on the outer wall of described shell.
Further, described heat treatment furnace comprises four described stationary furnace seats, and each described stationary furnace seat welds together by the outer wall of a cylinder and described base plate.
Further, described heat treatment furnace comprises four described shifting bearings, and each described shifting bearing is releasably attached to the predetermined position of the outer wall of described shell respectively.
Further, described shell comprises first furnace shell and second furnace shell that removably connects, and wherein said first furnace shell links to each other with described base plate, and described second furnace shell links to each other with described bell, and described first furnace shell is identical with the diameter of second furnace shell.
Further, at least two upper junction plates of upper edge setting of described first furnace shell, the lower edge of described second furnace shell is provided with at least two lower connecting plates that match with at least two described upper junction plates accordingly.
Further, described bell includes the ring flat-plate that at least three diameters successively decrease successively, removably is connected by lifting eye bolt between per two adjacent described ring flat-plates.
Further, described heat treatment furnace also includes Height Adjustable gas barrier, and described gas barrier is installed on the described bell.
Further, the pipe that described gas barrier includes cover plate and is fixed together with described cover plate, wherein said cover plate links to each other with the described ring flat-plate that is positioned at described bell center, and described pipe stretches into the inside of described heat treatment furnace, have the hole in the wall portion of described pipe, on the described cover plate handle is installed.
Further, the edge of described well heater is provided with pipe fitting, and described pipe fitting is connected with the inwall of described shell by fastening piece; The inboard of described well heater and one penetrates in the electrode lead-out rod of the outer wall of described shell and links to each other, and also is respectively equipped with porcelain tube between wherein said pipe fitting and the described fastening piece and between described electrode lead-out rod and the described shell.
Further, described heat treatment furnace includes at least ten six described well heaters, and the inwall of wherein said furnace shell is provided with at least ten two described well heaters, and described base plate is provided with four described well heaters.
Further, described heat treatment furnace includes at least one block of parallels, is arranged on the upper surface of described base plate.
Further, the number of described parallels is four, and is provided at predetermined intervals the upper surface at described base plate.
Further, described parallels and the described well heater space that is positioned on the described base plate arranged.
Further, described heat treatment furnace also comprises the charging basket that is used to hold workpiece to be heated, and described charging basket is positioned on the described parallels removedly.
Further, described shell is cylindrical, and its external diameter is 3200mm.
Further, the length of described first furnace shell and second furnace shell is respectively 2000mm and 1500mm.
According to heat treatment furnace of the present utility model, stationary bearing is fixedly installed on the outer wall of base plate, and shifting bearing is releasably attached on the outer wall of shell, and it is possessed can carry out vertically-arranged or horizontally-arranged adjustable with shell according to the needs of actual heating state.Meanwhile, bell of the present utility model is removably to be connected and composed by lifting eye bolt by five ring flat-plates, so the diameter of bell also is adjustable, with the middle-size and small-size pressurized vessel that satisfies different size and form or the various heating needs of parts, the gas barrier that is arranged on the bell can be regulated stove internal cooling velocity magnitude, effectively improve heat treatment efficiency, solved heat treated cost waste problem in Large Furnace.
Description of drawings
The present invention is described in detail below in conjunction with the drawings and specific embodiments.Wherein:
Fig. 1 is the vertical section structure synoptic diagram according to the heat treatment furnace of the utility model one embodiment;
Fig. 2 is the synoptic diagram of base plate among Fig. 1;
Fig. 3 is the synoptic diagram of bell among Fig. 1;
Fig. 4 a is the longitudinal section synoptic diagram of an embodiment of heat treatment furnace shown in Figure 1 when working;
Fig. 4 b is the longitudinal section synoptic diagram of another embodiment of heat treatment furnace shown in Figure 1 when working;
Fig. 5 is according to the utility model vertical section structure synoptic diagram of the heat treatment furnace of an embodiment again;
Longitudinal section synoptic diagram when Fig. 6 works for an embodiment of heat treatment furnace shown in Figure 5;
Fig. 7 is the vertical section structure synoptic diagram according to the heat treatment furnace of the another embodiment of the utility model;
Fig. 8 a is the longitudinal section synoptic diagram of an embodiment of heat treatment furnace shown in Figure 7 when working;
Fig. 8 b is the longitudinal section synoptic diagram of another embodiment of heat treatment furnace shown in Figure 7 when working;
Fig. 9 a, 9b are the annexation synoptic diagram of well heater of the present utility model and furnace shell.
Embodiment
Below, by exemplary embodiment the present invention is specifically described.Yet should be appreciated that under the situation that is not having further narration element, structure and feature in embodiment also can be attached in other embodiment valuably.
Fig. 1 shows the heat treatment furnace 10a according to the utility model one embodiment, includes shell 11a, base plate 12a, bell 13a and at least one well heater 14a.Wherein, base plate 12a is arranged on the bottom of shell 11a, and bell 13a is arranged on the top of shell 11a.In order to play the effect of the pending workpiece of heating, be preferably, the number of well heater 14a is set to a plurality of, and is installed in respectively on the inwall of shell 11a and/or base plate 12a.In order to play fixed supported effect, heat treatment furnace 10a of the present invention also includes at least one stationary furnace seat 151a and at least one shifting bearing, the outer wall of wherein said stationary furnace seat 151a and described base plate 12a links together, and the outer wall of described shifting bearing and described shell 11a links together.Preferably, the mode of connection of stationary furnace seat 151a and base plate 12a is welding, and described shifting bearing can link together with shell 11a is dismountable according to actual needs.
It is worthy of note, as shown in Figure 1 be the state that heat treatment furnace 10a is in vertically-arranged, this moment, shifting bearing was and the separated attitude of shell 11a, alternatively, stationary furnace seat 151a is weldingly fixed on by the outer wall of a cylinder with base plate 12a, for example stationary furnace seat 151a is welded on the cylinder 153a that has inner reinforced plate, and cylinder 153a welds fixing with the outer wall of base plate 12a again.Be preferably, in order to guarantee to support preferably stability, the number of stationary furnace seat 151a is four.Play the support damping in order further to treat heated parts, keep the minor increment of workpiece and well heater simultaneously, avoid over oxidation, be provided with at least one parallels 16a at the upper surface of base plate 12a.Alternatively, as shown in Figure 2, on base plate, evenly be provided with four parallels 16a, carry out heat treated on the parallels 16a so that pending workpiece is positioned in the mode of welding.Shell 11a includes a furnace shell 111a, is provided with front wallboard 113a at the upper limb of furnace shell 111a, and bell 13a links together by lifting eye bolt 131a and front wallboard 113a, and then realizes interconnecting between furnace shell 111a and the bell 13a.Be welded with 16 well heater 14a on the furnace lining of heat treatment furnace 10a, specifically, on base plate 12a, evenly be welded with four, evenly be welded with 12 on the inwall of furnace shell 111a.For the homogeneity that guarantees Heating temperature with further raising heats, be positioned at four parallels 16a on the base plate 12a and four well heater 14a apart from one another by arranging.Meanwhile, in order to play the effect of heat insulating, be equipped with insulating cotton 19a at base plate 12a and furnace shell 111a inside.
It is worthy of note that bell 13a includes the ring flat-plate that at least three diameters successively decrease successively.Be preferably, as shown in Figure 3, bell 13a is made up of the ring flat-plate 132a that five diameters successively decrease successively, stack mutually between per two adjacent ring flat-plate 132a, and removably connect by lifting eye bolt 131a, by adjusting the annexation between each lifting eye bolt 131a and ring flat-plate 132a, detachable and each ring flat-plate 132a is installed, thereby can regulate the size of the furnace port diameter of bell 13a, to satisfy the arts demand of different heat treatment.Be preferably, on bell 13a, also be provided with gas barrier 17a, in particular, gas barrier 17a comprises cover plate and the pipe that is fixed together with cover plate, in order to improve the work-ing life of device, alternatively, pipe herein is a stainless steel tube, cover plate links to each other with the ring flat-plate that is arranged on the bell center, and pipe stretches into the inside of heat treatment furnace, and for the benefit of the gas in the stove can be discharged fast, wherein have the hole in the wall portion of pipe, for the ease of operation, on the described cover plate handle is installed, can control the size of stove internal cooling speed by the lift height of regulating gas barrier 17a.
Particularly, as Fig. 4 a, show the synoptic diagram that uses the adapter 20 behind this heat treatment furnace 10a treatment group weld-ring weld seam to carry out postweld heat treatment.During operation, at first bell 13a is taken off from furnace shell 111a top, will take over 20 liftings and be placed on the parallels 16a, arrange temperature-control heat couple, then bell 13a is installed to furnace shell 111a top, 10a places closing condition with this heat treatment furnace, operate temperature control system then, heat-treat operation.Fig. 4 b and for example, show and use this heat treatment furnace 10a to handle the synoptic diagram that test plate (panel) 30 is commented in weldering, different with the foregoing description is that heat treatment furnace also includes a charging basket 18, charging basket 18 is placed on the parallels 16a removedly, then weldering is commented test plate (panel) 30 liftings to be placed in the charging basket 18 and is heat-treated.
As shown in Figure 5, be heat treatment furnace 10b according to the another embodiment of the utility model, this heat treatment furnace also is a vertically-arranged, different with aforementioned embodiments is, this shell 11b can freely extend according to actual needs, the furnace shell number of this heat treatment furnace 10b can be arranged to two as figure, the i.e. first furnace shell 111b and the second furnace shell 112b, the first furnace shell 111b links to each other with base plate 12b, the second furnace shell 112b and bell 13b join, the first furnace shell 111b is identical with the diameter of the second furnace shell 112b, is preferably, and is removably connection between the first furnace shell 111b and the second furnace shell 112b.Further, upper edge at the first furnace shell 111b is provided with at least two upper junction plate 121b, meanwhile the lower edge at the second furnace shell 112b is provided with at least two lower connecting plate 122b that match with at least two upper junction plate 121b accordingly, locks by fastening piece between each upper junction plate 121b and each the lower connecting plate 122b.Be preferably, in order to guarantee the steadiness of annexation, evenly be welded with eight upper junction plate 121b and eight lower connecting plate 122b respectively in the upper edge of the first furnace shell 111b and the lower edge of the second furnace shell 112b, alternatively, as on upper junction plate 121b and lower connecting plate 122b, having hole and hank knotting, and lock by screw bolt and nut.In like manner, equally also be provided with at least one well heater 14b on the furnace lining of this heat treatment furnace 10b, different with aforementioned embodiments is, the number of the well heater 14b of heat treatment furnace 10b is 18, on the inwall of furnace shell, be provided with 14, alternatively, for example on the inwall of the first furnace shell 111b, evenly be welded with 12, on the inwall of the second furnace shell 112b, evenly be welded with two, on base plate 12b, evenly be welded with four.
It is worthy of note that according to a specific embodiment of the present utility model, the first furnace shell 111b and the second furnace shell 112b are cylindrical, its external diameter θ is 3200mm, and the length m of the first furnace shell 111b is 2000mm, and the length n of the second furnace shell 112b is 1500mm.
Particularly, show as Fig. 6 and to use this heat treatment furnace 10b that shell 40 is dried by the fire the dress heating, alternatively, shell 40 is positioned on the parallels 16b on the base plate 12b heat-treats.
Referring to Fig. 7, be heat treatment furnace 10c according to another embodiment of the present utility model, different with aforementioned embodiments is, when heat treatment furnace 10c is in when horizontally-arranged, at least one shifting bearing 152c is installed on the outer wall of shell 111c, to realize its supporting role, preferably, the number of shifting bearing 152c is four, and wherein shifting bearing 152c can be installed to the outer wall of shell 111c by bolted mode, thereby plays fixed support easy-to-mount effect simultaneously.It is worthy of note that because workpiece to be heated is promptly to go in the stove from bell 13c lifting from sidepiece, workpiece is propped unsettled heating by subsidiary such as support during heat treatment operation, so need not to be provided with parallels on the base plate 12c of horizontally-arranged heat treatment furnace 10c.
Particularly, shown in Fig. 8 a, for using this heat treatment furnace 10c to tube sheet and heat transfer tube joint welding 50, the synoptic diagram that tube sheet and cylindrical shell circumferential weld 60 carry out the postwelding partial heat treatment, at first adjust the annexation of lifting eye bolt and ring flat-plate, adjust the number of bell 13c upper ring plate according to tube sheet 51 diameters, the bell 13c that adjusts diameter is installed on the furnace shell 111c, lift described workpiece to be heated at last and stretch into stove from the gap of the bell 13c that is positioned at sidepiece, arrange temperature-control heat couple, with the gap location of furnace shell and workpiece to be heated insulating cotton 19c jam-pack, last connection electrode connector is heat-treated.
Shown in Fig. 8 b, the bend loss of U-shaped heat transfer tube 70 is carried out the synoptic diagram of spot annealing, tempering heat treatment for using this heat treatment furnace 10c.Select the bell of needs size according to bend pipe diameter, batch and the detachable frock diameter of U-shaped heat transfer tube 70, adjust the annexation of lifting eye bolt and ring flat-plate, the bell 13c that adjusts diameter is installed on the furnace shell 111c, in like manner, the detachable frock 71 that lifts U-shaped heat transfer tube 70 is at last gone into stove, arrange temperature-control heat couple, with the gap location of furnace shell and workpiece insulating cotton 19c ' jam-pack, last connection electrode connector is heat-treated.
It is worthy of note, well heater 14a according to an embodiment of the present utility model, shown in Fig. 9 a and Fig. 9 b, edge at well heater 14a also is provided with pipe fitting, preferably, for example the edge at well heater 14a is welded with four stainless steel tubes 145, stainless steel tube 145 links together by the inwall of fastening piece and furnace shell 111a, alternatively, fastening piece is stainless steel double-screw bolt 141 and stainless steel nut 142, wherein the welding of stainless steel double-screw bolt 141 1 ends is fixed to the inwall of described furnace shell 111a, and the other end of stainless steel double-screw bolt 141 passes stainless steel tube 145 and stretches out, and is tightened by socket nut 142 thereon.One end of electrode lead-out rod 143 is connected with the inboard of well heater 14a, mode of connection herein, alternatively, for example welding or riveted joint, the other end of electrode lead-out rod 143 penetrates from furnace shell 111a, wherein the end and the Electrode connector (not shown) that penetrate away from furnace shell 111a of electrode lead-out rod 143 welds by brazing, Electrode connector is connected with the electrical control cubicles (not shown), but by electrical control cubicles intelligent control warming and cooling rate and heat tracing stage, the input processing parameter gets final product before thermal treatment, and the automatic recording curve of thermal treatment is stable.In order to guarantee security and insulativity, be respectively equipped with porcelain tube 144 between stainless steel tube 145 and the double-screw bolt 141 and between stainless steel tube 145 and the nut 142; Meanwhile, also be provided with porcelain tube 144 between the outer wall of electrode lead-out rod 143 and furnace shell 111a.
Heat treatment furnace according to utility model, not only overcome the carry out omnibearing heat treated limitation of existing large-scale heat treatment furnace to medium-small diameter pressurized vessel and parts, the cost waste problem of utilizing Large Furnace to heat-treat, the problem of market purchasing difficulty have been solved simultaneously, realized that the POST WELD HEAT TREATMENT OF ENTIRE of pressurized vessel and parts, the baking dress heating that recovers material property thermal treatment, shell ring carry out in a kind of Equipment for Heating Processing with the postwelding partial heat treatment, need not buy the Fuel Furnace of medium size, further improve production efficiency, saved production cost.This utility model is cheap, and long service life, furnace temperature is even, utilization ratio is high, saves the remarkable in economical benefits with extra earning, has general suitability in heavy and middle-size and small-size pressurized vessel factory.
Though should be pointed out that invention has been described by above-mentioned embodiment, yet the present invention also can have other numerous embodiments.Without departing from the spirit and scope of the present invention; those of ordinary skill in the art obviously can make various corresponding changes and distortion to the present invention, but these changes and distortion all should belong in the scope that claims of the present invention and equivalent thereof protect.
Claims (16)
1. a heat treatment furnace is characterized in that, comprising:
Shell;
Base plate is arranged on the bottom of described shell;
Bell is arranged on the top of described shell;
At least one well heater is installed on the inwall of described shell and/or base plate;
At least one stationary furnace seat is installed on the outer wall of described base plate; And
At least one shifting bearing is installed on the outer wall of described shell.
2. heat treatment furnace according to claim 1 is characterized in that, comprises four described stationary furnace seats, and each described stationary furnace seat welds together by the outer wall of a cylinder and described base plate.
3. heat treatment furnace according to claim 1 is characterized in that, comprises four described shifting bearings, and each described shifting bearing is releasably attached to the predetermined position of the outer wall of described shell respectively.
4. heat treatment furnace according to claim 1, it is characterized in that, described shell comprises first furnace shell and second furnace shell that removably connects, wherein said first furnace shell links to each other with described base plate, and described second furnace shell links to each other with described bell, and described first furnace shell is identical with the diameter of second furnace shell.
5. heat treatment furnace according to claim 4, it is characterized in that, the upper edge of described first furnace shell is provided with at least two upper junction plates, and the lower edge of described second furnace shell is provided with at least two lower connecting plates that match with at least two described upper junction plates accordingly.
6. heat treatment furnace according to claim 1 is characterized in that described bell includes the ring flat-plate that at least three diameters successively decrease successively, removably is connected by lifting eye bolt between per two adjacent described ring flat-plates.
7. heat treatment furnace according to claim 6 is characterized in that, also includes Height Adjustable gas barrier, and described gas barrier is installed on the described bell.
8. heat treatment furnace according to claim 7, it is characterized in that, the pipe that described gas barrier includes cover plate and is fixed together with described cover plate, wherein said cover plate links to each other with the described ring flat-plate that is positioned at described bell center, described pipe stretches into the inside of described heat treatment furnace, have the hole in the wall portion of described pipe, on the described cover plate handle is installed.
9. heat treatment furnace according to claim 1 is characterized in that the edge of described well heater is provided with pipe fitting, and described pipe fitting is connected with the inwall of described shell by fastening piece; The inboard of described well heater and one penetrates in the electrode lead-out rod of the outer wall of described shell and links to each other, and also is respectively equipped with porcelain tube between wherein said pipe fitting and the described fastening piece and between described electrode lead-out rod and the described shell.
10. heat treatment furnace according to claim 1 is characterized in that, includes at least ten six described well heaters, and the inwall of wherein said furnace shell is provided with at least ten two described well heaters, and described base plate is provided with four described well heaters.
11. heat treatment furnace according to claim 1 is characterized in that, includes at least one block of parallels, is arranged on the upper surface of described base plate.
12. heat treatment furnace according to claim 11 is characterized in that, the number of described parallels is four, and is provided at predetermined intervals the upper surface at described base plate.
13. heat treatment furnace according to claim 12 is characterized in that, the described parallels and the described well heater space that are positioned on the described base plate are arranged.
14., it is characterized in that also comprise the charging basket that is used to hold workpiece to be heated, described charging basket is positioned on the described parallels removedly according to claim 12 or 13 described heat treatment furnaces.
15., it is characterized in that described shell is cylindrical according to the described heat treatment furnace of claim 1, its external diameter is 3200mm.
16. heat treatment furnace according to claim 4, the length of described first furnace shell and second furnace shell is respectively 2000mm and 1500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202519176U CN201793649U (en) | 2010-06-29 | 2010-06-29 | Heat treatment furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202519176U CN201793649U (en) | 2010-06-29 | 2010-06-29 | Heat treatment furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201793649U true CN201793649U (en) | 2011-04-13 |
Family
ID=43848568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202519176U Expired - Lifetime CN201793649U (en) | 2010-06-29 | 2010-06-29 | Heat treatment furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN201793649U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312069A (en) * | 2010-06-29 | 2012-01-11 | 中国国际海运集装箱(集团)股份有限公司 | Thermal treatment furnace |
-
2010
- 2010-06-29 CN CN2010202519176U patent/CN201793649U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312069A (en) * | 2010-06-29 | 2012-01-11 | 中国国际海运集装箱(集团)股份有限公司 | Thermal treatment furnace |
| CN102312069B (en) * | 2010-06-29 | 2013-09-25 | 中国国际海运集装箱(集团)股份有限公司 | Thermal treatment 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: 20110413 Effective date of abandoning: 20130925 |
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| RGAV | Abandon patent right to avoid regrant |