CN107164627B - A kind of aluminium-alloy pipe cycle annealing processing equipment stove - Google Patents
A kind of aluminium-alloy pipe cycle annealing processing equipment stove Download PDFInfo
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- CN107164627B CN107164627B CN201710251133.XA CN201710251133A CN107164627B CN 107164627 B CN107164627 B CN 107164627B CN 201710251133 A CN201710251133 A CN 201710251133A CN 107164627 B CN107164627 B CN 107164627B
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- stove
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- 238000000137 annealing Methods 0.000 title claims abstract description 144
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 34
- 238000012545 processing Methods 0.000 title claims abstract description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000004321 preservation Methods 0.000 claims abstract description 28
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 20
- 238000005192 partition Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 12
- 230000002085 persistent effect Effects 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 8
- 206010028347 Muscle twitching Diseases 0.000 claims description 6
- 230000036461 convulsion Effects 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 238000005111 flow chemistry technique Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 12
- 230000001351 cycling effect Effects 0.000 abstract description 3
- 238000005485 electric heating Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009421 internal insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The present invention discloses a kind of aluminium-alloy pipe cycle annealing processing equipment stove,It is kept the temperature in ground inside groove including parallel be disposed side by side on of at least two annealing furnaces,The setting of annealing furnace tops both sides can go deep into warm-natured probing head,Annealing furnace inner homogeneous is layered and is placed with aluminium alloy pipe dish in each layer annular,Perpendicular to heat preservation ground, basal part fixation is equipped with stove partition wall between adjacent annealing furnace,Two-way air pump is equipped with by fixed bottom plate at the top of stove partition wall,Two-way air pump is matched with air pump motor,Two-way air pump both ends pass through air pump connector,The pipe fitting being connect with air pump joint screw thread,And the screwed pipe being connect with pipe joint screw thread is connect with annealing furnace,The screwed pipe other end passes through heat preservation flue to be connected to inside annealing furnace,The sequence of two-way air pump is realized by simple and effective electric control circuit (time relay),Positive and negative work,So that annealing nitrogen realizes the cycling and reutilization of high temperature nitrogen in each annealing furnace in circulating-heating heat preservation,The electric heating energy is effectively saved to use in annealing.
Description
Technical field
Present invention design belongs to tubing technical field of heat treatment, and in particular to a kind of aluminium-alloy pipe cycle annealing processing equipment
Stove.
Background technology
When carrying out aluminium-alloy pipe manufacture, usually last heat treatment procedure is come using the heat preservation operation of n 2 annealing stove
It reduces and processes remaining residual stress in aluminium-alloy pipe, organizes phenomena such as unstable.Existing annealing furnace when in use, substantially
Exactly an annealing heating finishes, and direct emission after furnace high-temperature gas cooling is fallen, and therefore, such aluminum alloy heat processing is set
The problems such as high, pollution is high for there is energy consumptions, the significant wastage of the energy is resulted in this way.Therefore, it is necessary to develop a kind of intelligence
Change the circulating annealing treatment equipment stove of energy conservation and environmental protection to meet the requirement of industrial energy saving environmental protection.
Notification number is that the Chinese patent of CN205133712U discloses a kind of buried Brass Pipe Annealing Stove Control of real-time temperature survey transmission,
The devices such as the annealing holding furnace inner blower of some compo pipes are placed in furnace bottom by it, and each annealing furnace is respectively used alone, and are just pacified
For dress form, operating method, the cycle annealing workflow between multiple annealing furnaces cannot achieve.
Invention content
For existing annealing furnace there are the problem of, the purpose of the present invention is to provide a kind of aluminium-alloy pipe cycle annealing processing
The defects of equipment stove, when annealing can not only eliminate internal residual stress, the tissue odds' instability of aluminium alloy pipe dish, can also fit
It answers energy conservation and environmental protection to require, realizes that the high temperature dwell warm nature nitrogen inside several annealing furnaces being capable of cycling and reutilization.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of aluminium-alloy pipe cycle annealing processing equipment stove, including annealing furnace, which is characterized in that at least two annealing furnaces are flat
Row is disposed side by side in heat preservation ground inside groove, and detachable arcuation annealing bell, annealing furnace tops are equipped at the top of annealing furnace
Center is equipped with air box, and air box is internally provided with wake turbulence motor, and wake turbulence motor bottom passes through annealing bell to be connected with and stirs
Flow fan, annealing furnace tops both sides, which are provided with, can go deep into warm-natured probing head, and annealing furnace inner wall is enclosed with one layer of heat preservation flue, moves back
Uniformly annular is wound with resistive heater between stove outer wall and heat preservation flue, and annealing furnace inner homogeneous is layered and in each layer inner ring
Shape is placed with aluminium alloy pipe dish, is fixed perpendicular to heat preservation ground basal part between adjacent annealing furnace and is equipped with stove partition wall, stove partition wall top
Portion is equipped with two-way air pump by fixed bottom plate, and matched air pump motor is equipped at the top of two-way air pump, and two-way air pump both ends are logical
Air pump connector is crossed, the pipe fitting being connect with air pump joint screw thread, and the screwed pipe being connect with pipe joint screw thread connect with annealing furnace
It connects, the screwed pipe other end passes through heat preservation flue to be connected to inside annealing furnace.
Preferably, the present invention keeps the temperature three annealing furnaces parallel be disposed side by side in ground inside groove.
A kind of work flow processing method for realizing above-mentioned preferred cycle annealing processing equipment stove, at cycle annealing
Manage the positive and negative operating circuit of setting air pump, time relay control circuit, air pump circuit group, gas in the electric control circuit of equipment stove
Pump circuit group external circuit is connected on the positive and negative operating circuit of air pump, and the positive and negative operating circuit three wire circuit of air pump is connected to time relay
In device control circuit, in three annealing furnace circulating-heating insulating processes, each annealing furnace is mutual indepedent and mutually assists, three
An annealing furnace in annealing furnace assist another will heating and thermal insulation annealing furnace, while remaining next annealing furnace and being taken
Go out to carry out the readjusting operations of aluminium alloy pipe dish, forms an anneal cycles process.
Compared with prior art, the invention has the advantages that：
1, the sequence of two-way air pump, positive and negative work are realized by simple and effective electric control circuit (time relay),
So that annealing nitrogen in circulating-heating heat preservation, is realized the cycling and reutilization of high temperature nitrogen, is effectively saved in three annealing furnaces
The electric heating energy uses in annealing, greatly reduces the cost of aluminium-alloy pipe annealing.
2, stringent to control rational heating, soaking time in three annealing furnaces in circulating-heating insulating process, effectively protect
Demonstrate,prove interior tissue type uniformity, the stability of structure and the uniformity of refinement in aluminium-alloy pipe annealing process.
3, in three annealing furnaces in circulating-heating insulating process, each annealing furnace is mutual indepedent and mutually assists, always
Occur an annealing furnace assist another will heating and thermal insulation annealing furnace, while remain next annealing furnace be removed progress
The readjusting operations of aluminium alloy pipe dish substantially increase the annealing efficiency of aluminium-alloy pipe.
Description of the drawings
Fig. 1 is aluminium-alloy pipe cycle annealing processing equipment stove main sectional view.
Fig. 2 be Fig. 1 shown in equipment stove connecting portion amplification after with major electrical equipment operating principle schematic diagram.
Fig. 3 is the essential electrical electric operation control circuit figure of the present invention.
Fig. 4 is the circulating running system figure of the present invention.
In figure：1- heat preservation grounds, 2- temperature probing heads, 3- air boxes, 4- wake turbulence motors, 5- wake turbulence fans, 6- annealing nitrogens,
7- annealing bells, 8- aluminium alloy pipe dish, 9- resistive heaters, 10- keep the temperature flue, 11- stove partition walls, 12- annealing furnaces, 13- air pumps
Motor, 14- fix bottom plate, the two-way air pumps of 15-, 16- pipe fittings, 17- screwed pipes, 18- air pump connectors；The positive and negative work of 19- air pumps
Circuit；20- time relay control circuits；21- air pump circuit groups；1., 2., 3.-annealing furnace one, two, three；M1, M2, M3- are bis-
To air pump one, two, three；D1, D2, D3- air pump motor one, two, three；The temperature that t- is measured.
Specific implementation mode
The present invention will be further described with reference to the accompanying drawings and embodiments：
As shown in Figs. 1-2, the aluminium-alloy pipe cycle annealing processing equipment stove of the embodiment of the present invention, structure include mainly protecting
12, three warm ground 1, aluminium alloy pipe dish 8, annealing furnace annealing furnaces 12 are parallel to be disposed side by side in heat preservation 1 inside groove of ground, is handed over
Temporary substitute is made, and working efficiency can be improved, and the interval location between three annealing furnaces 12 is laid with perpendicular to 1 bottom of heat preservation ground and fixes
There are stove partition wall 11, three 12 tops of annealing furnace to be mounted on detachable arcuation annealing bell 7,7 top center position of annealing bell
It sets and air box 3 is installed, 3 installed inside of air box has wake turbulence motor 4,4 bottom end of wake turbulence motor that annealing bell 7 is passed through to be connected with
Wake turbulence fan 5, by annealing nitrogen 6 inside wake turbulence, reach internal insulation annealing nitrogen 6 can Uniform Flow, ensure internal
The uniformity that aluminium alloy pipe dish 8 is kept the temperature, prevents supercooling hot spot, and 7 two side positions of top of annealing bell are fixedly installed
Warm-natured probing head 2 can be goed deep by having, and carry out internal heating, the real-time detection of holding temperature output, and 12 inner wall of annealing furnace is enclosed with one
Layer heat preservation flue 10, uniformly annular is wound with resistive heater 9 between 12 outer wall of annealing furnace and heat preservation flue 10, in annealing furnace 12
The uniform annular in three layers of part is placed with aluminium alloy pipe dish 8, and complementary space is full of annealing nitrogen 6, the stove of 12 interval location of annealing furnace
11 top of partition wall is mounted on two-way air pump 15 by fixed bottom plate 14, and 15 apical position of two-way air pump correspondence is equipped with air pump
Motor 13 is evacuated operation, 15 liang of each two-way air pump by controlling air pump motor 13 to control the positive direction of two-way air pump 15
Side end is mounted on the air pump connector 18 of internal thread tubular type, and being connected with dismounting pipe by screw-thread fit inside air pump connector 18 connects
First 16, dismounting 16 other end matching thread of pipe fitting is connected to inside 17 one end of matching thread pipe, 17 other end of matching thread pipe
It is connected to inside annealing furnace 12 across heat preservation flue 10, ensures that temporarily idle annealing furnace 12 can carry out internal aluminium alloy in this way
The readjusting operations of pipe dish 8.
As in Figure 2-4, the work flow processing method of the cycle annealing processing equipment stove of the embodiment of the present invention, is to follow
Be arranged in the electric control circuit of ring annealing treatment equipment stove the positive and negative operating circuit 19 of air pump, time relay control circuit 20,
Air pump circuit group 21, air pump circuit group external circuit are connected on the positive and negative operating circuit of air pump, positive and negative three line of the operating circuit electricity of air pump
Road is connected in time relay control circuit, is as follows：
Step 1a) annealing furnace works at the beginning,
Step 1b) furnace annealing nitrogen is heated by resistive heater, when being heated to 500 °, warm probing head 2
It detects temperature, keeps the temperature 20 minutes,
Step 1c) conducting control time relay control circuit in one KT1 Operating In Persistent Current Modes of delay switch, it is at this moment two-way
One forward conduction of air pump works, and twitches the high annealing nitrogen inside annealing furnace one and enters in annealing furnace two, at the same time, moves back
Stove one is removed the arrangement for carrying out aluminium alloy pipe dish；
Step 2a) work of annealing furnace two, preliminary heat preservation 10 minutes,
Step 2b) step 1b is repeated,
Step 2c) conducting control time relay control circuit in two KT2 Operating In Persistent Current Modes of delay switch, it is at this moment two-way
Two forward conduction of air pump works, and twitches the high annealing nitrogen inside annealing furnace two and enters in annealing furnace three, at the same time, moves back
Stove two is removed the arrangement for carrying out aluminium alloy pipe dish；
Step 3a) work of annealing furnace three, preliminary heat preservation 10 minutes,
Step 3b) step 1b is repeated,
Step 3c) conducting control time relay control circuit in three KT3 Operating In Persistent Current Modes of delay switch, it is at this moment two-way
Two reverse-conducting of air pump works, and twitches the high annealing nitrogen inside annealing furnace three and enters in annealing furnace two, at the same time, moves back
Stove three is removed the arrangement for carrying out aluminium alloy pipe dish；
Step 4a) work of annealing furnace two, preliminary heat preservation 10 minutes,
Step 4b) step 1b is repeated,
Step 4c) conducting control time relay control circuit in two KT2 Operating In Persistent Current Modes of delay switch, it is at this moment two-way
One reverse-conducting of air pump works, and twitches the high annealing nitrogen inside annealing furnace two and enters in annealing furnace one, at the same time, moves back
Stove two is removed the arrangement for carrying out aluminium alloy pipe dish；
Step 5a) work of annealing furnace one, preliminary heat preservation 10 minutes,
Step 5b) step 1b is repeated,
Step 5c) conducting control time relay control circuit t in one KT1 Operating In Persistent Current Modes of delay switch, it is at this moment double
It works to one forward conduction of air pump, twitches the high annealing nitrogen inside annealing furnace one and enter in annealing furnace two, so far complete
One anneal cycles process.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
It encloses and is defined, under the premise of not departing from design spirit of the present invention, technical side of the those of ordinary skill in the art to the present invention
The various modifications and improvement that case is made should all be fallen into the protection domain of claims of the present invention determination.
Claims (1)
1. a kind of work flow processing method of aluminium-alloy pipe cycle annealing processing equipment stove, the cycle annealing processing equipment stove
It is kept the temperature in ground inside groove including parallel be disposed side by side on of three annealing furnaces, detachable arcuation annealing furnace is installed at the top of annealing furnace
Lid, annealing furnace tops center are equipped with air box, and air box is internally provided with wake turbulence motor, and wake turbulence motor bottom is passed through and moved back
Furnace cover is connected with wake turbulence fan, and annealing furnace tops both sides, which are provided with, can go deep into warm-natured probing head, and annealing furnace inner wall is enclosed with
One layer of heat preservation flue, annealing between furnace outer wall and heat preservation flue, uniformly annular is wound with resistive heater, annealing furnace inner homogeneous
It is layered and is placed with aluminium alloy pipe dish in each layer annular, fix and be equipped with perpendicular to heat preservation ground basal part between adjacent annealing furnace
Stove partition wall, stove partition wall top are equipped with two-way air pump by fixed bottom plate, matched air pump motor are equipped at the top of two-way air pump,
Two-way air pump both ends are by air pump connector, the pipe fitting being connect with air pump joint screw thread, and the spiral shell being connect with pipe joint screw thread
Line pipe is connect with annealing furnace, and the screwed pipe other end passes through heat preservation flue to be connected to inside annealing furnace, which is characterized in that is moved back in cycle
The positive and negative operating circuit of air pump, time relay control circuit, air pump circuit are set in the electric control circuit of fiery processing equipment stove
Group, air pump circuit group external circuit are connected on the positive and negative operating circuit of air pump, when the positive and negative operating circuit three wire circuit of air pump is connected to
Between in control relay circuit, be as follows：
Step 1a) annealing furnace works at the beginning,
Step 1b) furnace annealing nitrogen is heated by resistive heater, when being heated to 500 °, warm probing head (2) inspection
Temperature is measured, keeps the temperature 20 minutes,
Step 1c) conducting control time relay control circuit in delay switch one (KT1) Operating In Persistent Current Mode, at this moment two-way gas
Forward conduction work is pumped, the high annealing nitrogen inside annealing furnace one is twitched and enters in annealing furnace two, at the same time, is taken out
Annealing furnace one, and the aluminium alloy pipe dish in stove is arranged；
Step 2a) work of annealing furnace two, preliminary heat preservation 10 minutes,
Step 2b) step 1b is repeated,
Step 2c) conducting control time relay control circuit in delay switch two (KT2) Operating In Persistent Current Mode, at this moment two-way gas
The work of two forward conductions is pumped, the high annealing nitrogen inside annealing furnace two is twitched and enters in annealing furnace three, at the same time, is taken out
Annealing furnace two, and the aluminium alloy pipe dish in stove is arranged；
Step 3a) work of annealing furnace three, preliminary heat preservation 10 minutes,
Step 3b) step 1b is repeated,
Step 3c) conducting control time relay control circuit in delay switch three (KT3) Operating In Persistent Current Mode, at this moment two-way gas
The work of two reverse-conductings is pumped, the high annealing nitrogen inside annealing furnace three is twitched and enters in annealing furnace two, at the same time, is taken out
Annealing furnace three, and the aluminium alloy pipe dish in stove is arranged；
Step 4a) work of annealing furnace two, preliminary heat preservation 10 minutes,
Step 4b) step 1b is repeated,
Step 4c) conducting control time relay control circuit in delay switch two (KT2) Operating In Persistent Current Mode, at this moment two-way gas
Reverse-conducting work is pumped, the high annealing nitrogen inside annealing furnace two is twitched and enters in annealing furnace one, at the same time, is taken out
Annealing furnace two, and the aluminium alloy pipe dish in stove is arranged；
Step 5a) work of annealing furnace one, preliminary heat preservation 10 minutes,
Step 5b) step 1b is repeated,
Step 5c) conducting control time relay control circuit t in delay switch one (KT1) Operating In Persistent Current Mode, it is at this moment two-way
One forward conduction of air pump works, and twitches the high annealing nitrogen inside annealing furnace one and enters in annealing furnace two, so far completes one
A anneal cycles process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710251133.XA CN107164627B (en) | 2017-04-18 | 2017-04-18 | A kind of aluminium-alloy pipe cycle annealing processing equipment stove |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710251133.XA CN107164627B (en) | 2017-04-18 | 2017-04-18 | A kind of aluminium-alloy pipe cycle annealing processing equipment stove |
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| CN107164627A CN107164627A (en) | 2017-09-15 |
| CN107164627B true CN107164627B (en) | 2018-10-16 |
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| CN111004910B (en) * | 2019-12-10 | 2022-03-04 | 河南科技大学 | Experimental system for reduce plate and strip residual stress |
| CN113201639B (en) * | 2021-04-06 | 2022-04-19 | 燕山大学 | Device for annealing pipe and using method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3736502C1 (en) * | 1987-10-28 | 1988-06-09 | Degussa | Vacuum furnace for the heat treatment of metallic workpieces |
| CN2144284Y (en) * | 1992-08-26 | 1993-10-20 | 秦皇岛通海发明技术开发研究所 | Resistance furnace for annealing aluminium material |
| CN1884593A (en) * | 2006-07-05 | 2006-12-27 | 张家港市先进机电有限公司 | Sheet annealing furnace |
| WO2008136142A1 (en) * | 2007-04-20 | 2008-11-13 | Hitachi Industrial Equipment Systems Co., Ltd. | Iron core annealing furnace |
| AT507423B1 (en) * | 2009-03-25 | 2010-05-15 | Ebner Ind Ofenbau | PROCESS FOR PREHEATING GLOWING IN A BROWN GLOW SYSTEM |
| AT508776B1 (en) * | 2010-04-14 | 2011-04-15 | Ebner Ind Ofenbau | PROCESS FOR PREHEATING GLOWING IN A BROWN GLOW SYSTEM |
| CN102560050A (en) * | 2010-12-21 | 2012-07-11 | 湖南晟通科技集团有限公司 | Tangential-spraying-type material coil annealing furnace |
| CN202465781U (en) * | 2012-02-09 | 2012-10-03 | 天津研展技术开发有限公司 | Efficient continuous muffle tube annealing furnace for hot-dip galvanizing production line |
| CN103409597A (en) * | 2013-08-03 | 2013-11-27 | 石家庄新华能源环保科技股份有限公司 | Hood-type annealing furnace device |
| CN103667625A (en) * | 2013-11-09 | 2014-03-26 | 无锡华玉铝业有限公司 | Closed annealing furnace for aluminum wafer |
| CN104819640B (en) * | 2015-04-29 | 2016-08-17 | 鲍守明 | Add the adjustable car-type heat treating furnace of heat space |
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Effective date of registration: 20200714 Address after: Chengxiang city Taicang town Suzhou city Jiangsu province 215400 000 Honghua court room 2 A25 Patentee after: TAICANG JIJING MACHINERY Co.,Ltd. Address before: Hebei Street West Harbor area, 066004 Hebei city of Qinhuangdao province No. 438 Patentee before: Yanshan University |
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Effective date of registration: 20240516 Address after: No.76, area B, Sanshui center science and Technology Industrial Zone, Foshan City, Guangdong Province Patentee after: FOSHAN LIXIN METAL PRODUCTS CO.,LTD. Country or region after: China Address before: 215400 room a25, building 2, wanhonghuating, Chengxiang Town, Taicang City, Suzhou City, Jiangsu Province Patentee before: TAICANG JIJING MACHINERY CO.,LTD. Country or region before: China |