CN203053239U - Structure capable of improving cooling speed of vacuum high temperature furnace - Google Patents
Structure capable of improving cooling speed of vacuum high temperature furnace Download PDFInfo
- Publication number
- CN203053239U CN203053239U CN 201320033478 CN201320033478U CN203053239U CN 203053239 U CN203053239 U CN 203053239U CN 201320033478 CN201320033478 CN 201320033478 CN 201320033478 U CN201320033478 U CN 201320033478U CN 203053239 U CN203053239 U CN 203053239U
- Authority
- CN
- China
- Prior art keywords
- insulation layer
- insulating block
- heat insulating
- gathering sill
- thermal insulation
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Furnace Details (AREA)
Abstract
The utility model discloses a structure capable of improving the cooling speed of a vacuum high temperature furnace. The structure capable of improving the cooling speed of the vacuum high temperature furnace comprises a thermal insulation layer arranged on the inner wall of the vacuum high temperature furnace. The thermal insulation layer comprises a thermal insulation layer body and a movable thermal insulation block, wherein the thermal insulation layer body and the movable thermal insulation block can detachably connected. A gap which is matched with the movable thermal insulation block is formed in the thermal insulation layer body. When the movable thermal insulation block is completely embedded in the gap of the thermal insulation layer body, the thermal insulation layer is of a sealing structure. When the movable thermal insulation block is not completely embedded in the gap of the thermal insulation layer body or separated from the thermal insulation layer body, a crack is formed between the movable thermal insulation block and the gap of the thermal insulation layer body. In addition, the structure further comprises a driving mechanism which is used for moving the movable thermal insulation block to change the relative position between the movable thermal insulation block and the thermal insulation layer body. The structure capable of improving the cooling speed of the vacuum high temperature furnace can greatly shorten the cooling time of the vacuum high temperature furnace when the furnace internal temperature is at the stage of from '600 DEG C to normal temperature, so that the whole production period is shortened, and production efficiency is improved.
Description
Technical field
The utility model relates to a kind of structure that can improve the high-temperature vacuum furnace cooling velocity, and it can increase by 600 ℃ of the high-temperature vacuum furnaces cooling velocity in the normal temperature process greatly.
Background technology
The traditional vacuum high temperature furnace comprises body of heater 11, is provided with heat-insulation layer 14 at inboard wall of furnace body, and as shown in Figure 1, described heat-insulation layer 14 normally is fixed on each face of body of heater 11, normally can't be movable.In order to reach heat insulation effect, all be close between each face, so just make cooling stage slow.Generally, temperature cool to room temperature required time is about 30 hours in a high temperature furnace that is warmed up to about 2000 ℃, stove, and the interior temperature of stove is cooled to normal temperature from 600 ℃ and probably accounts for 2/3 of whole cool time required cool time.So Chang cool time, lengthened in the whole production cycle, restricted production efficiency.
The utility model content
The purpose of this utility model is to overcome deficiency of the prior art, a kind of structure that can improve the high-temperature vacuum furnace cooling velocity is provided, by the improvement to the high-temperature vacuum furnace internal insulation structure, can shorten in the stove of high-temperature vacuum furnace temperature greatly in the cool time in " 600 ℃ to normal temperature " stage, thereby shorten the whole production cycle, enhance productivity.
For achieving the above object, the described structure that can improve the high-temperature vacuum furnace cooling velocity, comprise the heat-insulation layer on the inboard wall of furnace body that is arranged on high-temperature vacuum furnace, be characterized in, described heat-insulation layer comprises heat-insulation layer main body and the movable heat insulating block that removably connects, and offers the breach that is complementary with movable heat insulating block on the described heat-insulation layer main body; When described movable heat insulating block embedded in the breach of heat-insulation layer main body fully, described heat-insulation layer was hermetically-sealed construction; In described movable heat insulating block does not embed the breach of heat-insulation layer main body fully or when breaking away from this heat-insulation layer main body, produce the slit between the breach of this activity heat insulating block and heat-insulation layer main body; And the described structure that can improve the high-temperature vacuum furnace cooling velocity also comprises for the driving mechanism of mobile described movable heat insulating block with the relative position that changes this activity heat insulating block and heat-insulation layer main body.
Preferably, the armed lever that described driving mechanism comprises drive motors, be connected with the output shaft of drive motors and move up and down by the driving effect of drive motors, be used for to guarantee described armed lever mobile guiding mechanism and be used for moving up and down of armed lever transferred to described movable heat insulating block vertically, so that the elevating mechanism that should the activity heat insulating block moves up and down synchronously.
Preferably, described drive motors is linear electric motors; Described linear electric motors are erected at by support on the body of heater of high temperature furnace, and the output shaft of these linear electric motors is placed down;
Described armed lever is down " several " font;
Described guiding mechanism comprise first gathering sill, with first guide pad of the first gathering sill sliding connection, second gathering sill and with second guide pad of the second gathering sill sliding connection;
Described elevating mechanism comprises first elevating lever and second elevating lever; And,
The output shaft of described linear electric motors and middle part, the base of armed lever are connected, and the two ends on the base of described armed lever are connected with first guide pad and second guide pad respectively, with mobile vertically along first gathering sill and second gathering sill;
First free end of described armed lever and second free end are connected with first elevating lever and second elevating lever respectively, body of heater and movable heat insulating block that the free end of the free end of described first elevating lever and second elevating lever runs through described high-temperature vacuum furnace respectively are connected, and move up and down synchronously to drive this activity heat insulating block.
Preferably, described drive motors is electric rotating machine; Described electric rotating machine is erected at by support on the body of heater of high temperature furnace, and the output shaft of this electric rotating machine is placed down;
Described armed lever is down " several " font;
Described guiding mechanism comprise first gathering sill, with first guide pad of the first gathering sill sliding connection, second gathering sill and with second guide pad of the second gathering sill sliding connection;
Described elevating mechanism comprises first elevating lever and second elevating lever; And,
The output shaft of described electric rotating machine is connected by shaft coupling and a screw mandrel; The middle part, base of described armed lever is fixed on the nut that is connected with described wire rod thread, and the two ends on the base of described armed lever are connected with first guide pad and second guide pad respectively, with mobile vertically along first gathering sill and second gathering sill;
First free end of described armed lever and second free end are connected with first elevating lever and second elevating lever respectively, the free end of the free end of described first elevating lever and second elevating lever runs through described vacuum respectively and movable heat insulating block is connected, and moves up and down synchronously to drive this activity heat insulating block.
Preferably, described driving mechanism also comprises first bellows that is set in first elevating lever outside and second bellows that is set in second elevating lever outside; One end of described first bellows and first free end of armed lever are tightly connected, and the furnace body outer wall of the other end and described high-temperature vacuum furnace is tightly connected; One end of described second bellows and second free end of armed lever are tightly connected, and the furnace body outer wall of the other end and described high-temperature vacuum furnace is tightly connected.
Preferably, be respectively arranged with spacing module at the two ends of described first gathering sill, be respectively arranged with spacing module at the two ends of described second gathering sill.
Preferably, the breach of described heat-insulation layer main body and movable heat insulating block contacted end face each other are all stepped, this activity heat insulating block by with the mutual superimposed overlap joint of the breach of heat-insulation layer main body.
The beneficial effects of the utility model are that application can improve the structure of high-temperature vacuum furnace cooling velocity, the heat-insulation layer of high temperature furnace can be divided into fixing heat-insulation layer main body and movable two modules of movable heat insulating block.In the high temperature furnace course of work, just the upper-lower position of the heat insulating block of change activity according to actual needs changes the heat-insulating property in the stove.Particularly at high temperature furnace cooling cooling stage, i.e. " 600 ℃ to normal temperature " cooling stage, movable heat insulating block is moved down, make heat-insulation layer produce gap and increase gradually, under the condition that feeds the inert gas cooling, the furnace gas flowing velocity is accelerated, and can improve cooling velocity greatly, save the time of this cooling stage about 1/2, can save the time of whole cooling procedure 1/3.
Description of drawings
Fig. 1 shows the structural representation of the body of heater of traditional vacuum high temperature furnace.
Fig. 2 shows the structural representation of the high-temperature vacuum furnace that has the structure that can improve the high-temperature vacuum furnace cooling velocity described in the utility model.
Fig. 3 shows the schematic diagram of the structure that can improve the high-temperature vacuum furnace cooling velocity shown in Fig. 2.
Fig. 4 shows the structural representation that is arranged on the movable heat insulating block on the high-temperature vacuum furnace shown in Fig. 2 and Fig. 3.
Fig. 5 shows the structural representation of the hoisting mechanism in the structure that can improve the high-temperature vacuum furnace cooling velocity shown in Fig. 2 and Fig. 3.
The specific embodiment
The utility model is described in more detail below in conjunction with the drawings and specific embodiments:
As shown in Figures 2 and 3, the described structure that can improve the high-temperature vacuum furnace cooling velocity, comprise the heat-insulation layer on the inboard wall of furnace body that is arranged on high-temperature vacuum furnace, described heat-insulation layer comprises heat-insulation layer main body 12 and the movable heat insulating block 13 that removably connects, and offers the breach that is complementary with movable heat insulating block 13 on the described heat-insulation layer main body 12; When described movable heat insulating block 13 embedded in the breach of heat-insulation layer main body 12 fully, described heat-insulation layer was hermetically-sealed construction; In described movable heat insulating block 13 does not embed the breach of heat-insulation layer main body 12 fully or when breaking away from this heat-insulation layer main body 12, produce the slit between the breach of this activity heat insulating block 13 and heat-insulation layer main body 12.And the described structure that can improve the high-temperature vacuum furnace cooling velocity also comprises for mobile described movable heat insulating block 13 to change the driving mechanism of this activity heat insulating block 13 and the relative position of heat-insulation layer main body 12.
Shown in Fig. 2,4 and 5, the armed lever 6 that described driving mechanism comprises drive motors 3, be connected with the output shaft 31 of drive motors and move up and down by the driving effect of drive motors 3, be used for to guarantee described armed lever 6 mobile guiding mechanism 7 and be used for moving up and down of armed lever 6 transferred to described movable heat insulating block 13 vertically, so that the elevating mechanism 4 that should activity heat insulating block 13 moves up and down synchronously.It is 20 ~ 30mm that described driving mechanism orders about the vertical range that movable heat insulating block 13 moves up and down.Described guiding mechanism 7 can provide the motion guidance to armed lever 6, reduces the vibrations in the motion process.
In order to carry out rectilinear motion, described drive motors 3 is preferably linear electric motors, and directly the rectilinear motion with linear electric motors output is passed to follow-up mechanism.Particularly, as shown in Figure 4 and Figure 5, described drive motors 3 is linear electric motors; Described linear electric motors are erected at by support 2 on the body of heater of high temperature furnace, and the output shaft 31 of these linear electric motors is placed down; Described armed lever 6 is down " several " font; Described guiding mechanism 7 comprise first gathering sill 711, with first guide pad 712 of first gathering sill, 711 sliding connections, second gathering sill 721 and with second guide pad 722 of second gathering sill, 721 sliding connections; Described elevating mechanism 4 comprises first elevating lever 41 and second elevating lever 42.
Wherein, middle part, the base of the output shaft of described linear electric motors and armed lever 6 is connected, and the two ends on the base of described armed lever 6 are connected with first guide pad 712 and second guide pad 722 respectively, with mobile vertically along first gathering sill 711 and second gathering sill 721.First free end 61 of described armed lever 6 and second free end 62 are connected with first elevating lever 41 and second elevating lever 42 respectively, the body of heater 11 that the free end of the free end of described first elevating lever 41 and second elevating lever 42 runs through described high-temperature vacuum furnace respectively is connected with movable heat insulating block 13, moves up and down synchronously to drive this activity heat insulating block 13.
In addition, described drive motors 3 also can be elected electric rotating machine as, and by for example screw mandrel and nut, perhaps the mode of gear and tooth bar is converted into rectilinear motion with rotatablely moving of electric rotating machine output shaft.Particularly: described drive motors 3 is electric rotating machine; Described electric rotating machine is erected at by support 2 on the body of heater of high temperature furnace, and the output shaft of this electric rotating machine is placed down; Described armed lever 6 is down " several " font; Described guiding mechanism 7 comprise first gathering sill 711, with first guide pad 712 of first gathering sill, 711 sliding connections, second gathering sill 721 and with second guide pad 722 of second gathering sill, 721 sliding connections; Described elevating mechanism 4 comprises first elevating lever 41 and second elevating lever 42.
Wherein, the output shaft of described electric rotating machine is connected by shaft coupling and a screw mandrel; The middle part, base of described armed lever 6 is fixed on the nut that is connected with described wire rod thread, the two ends on the base of described armed lever 6 are connected with first guide pad 712 and second guide pad 722 respectively, with mobile vertically along first gathering sill 711 and second gathering sill 721.
First free end 61 of described armed lever 6 and second free end 62 are connected with first elevating lever 41 and second elevating lever 42 respectively, the free end of the free end of described first elevating lever 41 and second elevating lever 42 runs through described vacuum respectively and movable heat insulating block 13 is connected, and moves up and down synchronously to drive this activity heat insulating block 13.
Because elevating mechanism 4 need run through the body of heater 11 of high-temperature vacuum furnace, to fixedly connected with the movable heat insulating block 13 in the burner hearth, can make in the process can not keep sealing state in the high temperature furnace, therefore need hermetically-sealed construction.Particularly:
Described driving mechanism also comprises first bellows 51 that is set in first elevating lever, 41 outsides and second bellows 52 that is set in second elevating lever, 42 outsides; First free end 61 of one end of described first bellows 51 and armed lever 6 is tightly connected, and body of heater 11 outer walls of the other end and described high-temperature vacuum furnace are tightly connected; Second free end 62 of one end of described second bellows 52 and armed lever 6 is tightly connected, and body of heater 11 outer walls of the other end and described high-temperature vacuum furnace are tightly connected.Can adopt sealing ring to seal herein.Thereby when elevating mechanism 4 motion, bellows is flexible follows, and design has solved elevating mechanism 4 and is connected with the gap with body of heater 11 and influences a difficult problem that seals in the stove like this.
Further, be respectively arranged with spacing module at the two ends of described first gathering sill 711, be respectively arranged with spacing module at the two ends of described second gathering sill 721, spacing module can play the effect of control stroke.
In addition, when described movable heat insulating block 13 embeds in the breach of heat-insulation layer main body 12 fully, in order to overlap fully between the breach that makes movable heat insulating block 13 and heat-insulation layer main body 12, in order to effectively reduce the interlayer gap when merging, improve heat insulating ability, done following setting: the breach of described heat-insulation layer main body 12 and movable heat insulating block 13 contacted end face each other are all stepped, this activity heat insulating block 13 by with the mutual superimposed overlap joint of the breach of heat-insulation layer main body 12.
To sum up, the design of heat-insulation layer of the present utility model can make partial heat-insulating layer become movable object, by the activity of partial heat-insulating layer, can increase the interlayer gap, and the furnace gas flowing velocity is accelerated, and improves cooling velocity.
At high-temperature vacuum furnace heating and hot stage, drive motors 3 drives on the elevating mechanism 4 and moves, and heat-insulation layer merges, and becomes sealing state.When high temperature furnace enters cooling stage, and during the inherent 600 ℃ of left and right sides of stove, elevating mechanism 4 moves down, and the heat insulating block of drive activity simultaneously 13 also moves down, and heat-insulation layer is opened, and accelerates cooling.
Being the utility model preferred embodiment only in sum, is not to limit practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modification, all should belong to technology category of the present utility model.
Claims (7)
1. structure that can improve the high-temperature vacuum furnace cooling velocity, comprise the heat-insulation layer on the inboard wall of furnace body that is arranged on high-temperature vacuum furnace, it is characterized in that: described heat-insulation layer comprises heat-insulation layer main body and the movable heat insulating block that removably connects, and offers the breach that is complementary with movable heat insulating block on the described heat-insulation layer main body; When described movable heat insulating block embedded in the breach of heat-insulation layer main body fully, described heat-insulation layer was hermetically-sealed construction; In described movable heat insulating block does not embed the breach of heat-insulation layer main body fully or when breaking away from this heat-insulation layer main body, produce the slit between the breach of this activity heat insulating block and heat-insulation layer main body; And,
The described structure that can improve the high-temperature vacuum furnace cooling velocity also comprises for the driving mechanism of mobile described movable heat insulating block with the relative position that changes this activity heat insulating block and heat-insulation layer main body.
2. the structure that can improve the high-temperature vacuum furnace cooling velocity according to claim 1, it is characterized in that: the armed lever that described driving mechanism comprises drive motors, be connected with the output shaft of drive motors and move up and down by the driving effect of drive motors, be used for to guarantee described armed lever mobile guiding mechanism and be used for moving up and down of armed lever transferred to described movable heat insulating block vertically, so that the elevating mechanism that should the activity heat insulating block moves up and down synchronously.
3. the structure that can improve the high-temperature vacuum furnace cooling velocity according to claim 2 is characterized in that:
Described drive motors is linear electric motors; Described linear electric motors are erected at by support on the body of heater of high temperature furnace, and the output shaft of these linear electric motors is placed down;
Described armed lever is down " several " font;
Described guiding mechanism comprise first gathering sill, with first guide pad of the first gathering sill sliding connection, second gathering sill and with second guide pad of the second gathering sill sliding connection;
Described elevating mechanism comprises first elevating lever and second elevating lever; And,
The output shaft of described linear electric motors and middle part, the base of armed lever are connected, and the two ends on the base of described armed lever are connected with first guide pad and second guide pad respectively, with mobile vertically along first gathering sill and second gathering sill;
First free end of described armed lever and second free end are connected with first elevating lever and second elevating lever respectively, body of heater and movable heat insulating block that the free end of the free end of described first elevating lever and second elevating lever runs through described high-temperature vacuum furnace respectively are connected, and move up and down synchronously to drive this activity heat insulating block.
4. the structure that can improve the high-temperature vacuum furnace cooling velocity according to claim 2 is characterized in that:
Described drive motors is electric rotating machine; Described electric rotating machine is erected at by support on the body of heater of high temperature furnace, and the output shaft of this electric rotating machine is placed down;
Described armed lever is down " several " font;
Described guiding mechanism comprise first gathering sill, with first guide pad of the first gathering sill sliding connection, second gathering sill and with second guide pad of the second gathering sill sliding connection;
Described elevating mechanism comprises first elevating lever and second elevating lever; And,
The output shaft of described electric rotating machine is connected by shaft coupling and a screw mandrel; The middle part, base of described armed lever is fixed on the nut that is connected with described wire rod thread, and the two ends on the base of described armed lever are connected with first guide pad and second guide pad respectively, with mobile vertically along first gathering sill and second gathering sill;
First free end of described armed lever and second free end are connected with first elevating lever and second elevating lever respectively, the free end of the free end of described first elevating lever and second elevating lever runs through described vacuum respectively and movable heat insulating block is connected, and moves up and down synchronously to drive this activity heat insulating block.
5. according to claim 3 or the 4 described structures that can improve the high-temperature vacuum furnace cooling velocity, it is characterized in that: described driving mechanism also comprises first bellows that is set in first elevating lever outside and second bellows that is set in second elevating lever outside; One end of described first bellows and first free end of armed lever are tightly connected, and the furnace body outer wall of the other end and described high-temperature vacuum furnace is tightly connected; One end of described second bellows and second free end of armed lever are tightly connected, and the furnace body outer wall of the other end and described high-temperature vacuum furnace is tightly connected.
6. according to claim 3 or the 4 described structures that can improve the high-temperature vacuum furnace cooling velocity, it is characterized in that: be respectively arranged with spacing module at the two ends of described first gathering sill, be respectively arranged with spacing module at the two ends of described second gathering sill.
7. according to any described structure that can improve the high-temperature vacuum furnace cooling velocity in the claim 1 to 4, it is characterized in that: the breach of described heat-insulation layer main body and movable heat insulating block contacted end face each other are all stepped, this activity heat insulating block by with the mutual superimposed overlap joint of the breach of heat-insulation layer main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320033478 CN203053239U (en) | 2013-01-22 | 2013-01-22 | Structure capable of improving cooling speed of vacuum high temperature furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320033478 CN203053239U (en) | 2013-01-22 | 2013-01-22 | Structure capable of improving cooling speed of vacuum high temperature furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203053239U true CN203053239U (en) | 2013-07-10 |
Family
ID=48736186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320033478 Expired - Lifetime CN203053239U (en) | 2013-01-22 | 2013-01-22 | Structure capable of improving cooling speed of vacuum high temperature furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203053239U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266492A (en) * | 2014-10-20 | 2015-01-07 | 湖南省鑫源新材料股份有限公司 | Quick cooling structure of large high-temperature resistance furnace |
| CN116356129A (en) * | 2023-05-30 | 2023-06-30 | 南京铖联激光科技有限公司 | Vacuum heat treatment furnace with rapid cooling function |
-
2013
- 2013-01-22 CN CN 201320033478 patent/CN203053239U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266492A (en) * | 2014-10-20 | 2015-01-07 | 湖南省鑫源新材料股份有限公司 | Quick cooling structure of large high-temperature resistance furnace |
| CN116356129A (en) * | 2023-05-30 | 2023-06-30 | 南京铖联激光科技有限公司 | Vacuum heat treatment furnace with rapid cooling function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203053239U (en) | Structure capable of improving cooling speed of vacuum high temperature furnace | |
| CN104786418A (en) | Vacuum high-temperature hot pressing molding machine | |
| CN104513894A (en) | Well type thermal treatment furnace for ring piece | |
| CN202470734U (en) | Device for sintering magnetic material | |
| CN202090024U (en) | U-type thermal recycling isothermal normalizing furnace | |
| CN203569150U (en) | Well type thermal treatment furnace for ring piece | |
| CN204604716U (en) | A kind of vacuum high-temperature heat pressing forming machines | |
| CN209507983U (en) | A kind of photovoltaic glass kiln pool wall adjustment device | |
| CN204690082U (en) | High-efficiency insulated heat treatment furnace | |
| CN201372307Y (en) | Multifunctional carburizing furnace | |
| CN203561190U (en) | Energy-saving kiln for firing door bricks | |
| CN103952519A (en) | Furnace cover of well-type tempering furnace | |
| CN106186652B (en) | A kind of split type glass bending furnace of quantity-produced | |
| CN103103316A (en) | Progressive electric heating furnace | |
| CN202116692U (en) | Rotary lifting mechanism of composite cylindrical cam of thermal switch of polysilicon ingot furnace | |
| CN207214793U (en) | A kind of soldering oven production line Muffle synchronous guiding device | |
| CN203593699U (en) | Electric heating type panel glass-ceramic multi-layer crystallization kiln | |
| CN202643752U (en) | Trolley-type heat treatment furnace | |
| CN103789719A (en) | Pushing-rod type carburizing furnace | |
| CN204478799U (en) | Double-body type energy-saving rotary frit furnace | |
| CN209412268U (en) | Novel natural gas heat-treatment furnace | |
| CN203034049U (en) | Annealing furnace | |
| CN203569149U (en) | Passing-type rotor heating furnace of piston compressor | |
| CN201828137U (en) | Vertical type high temperature spheroidizing furnace | |
| CN202030660U (en) | Crystallization reducing furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190423 Address after: 528500 No. 44 Sanhe Road, Hecheng Street, Gaoming District, Foshan City, Guangdong Province Patentee after: FOSHAN SHIJIN TECHNOLOGY Co.,Ltd. Address before: 523711 No. 99A6-101, 99A7-101, Hongye North Road, Lincun, Tangxia Town, Dongguan City, Guangdong Province Patentee before: DONGGUAN KAIPENG COMPOSITE MATERIAL Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130710 |