CN106244772B - A kind of molten iron stirring desulphurization hydraulic model trial system - Google Patents
A kind of molten iron stirring desulphurization hydraulic model trial system Download PDFInfo
- Publication number
- CN106244772B CN106244772B CN201610642680.6A CN201610642680A CN106244772B CN 106244772 B CN106244772 B CN 106244772B CN 201610642680 A CN201610642680 A CN 201610642680A CN 106244772 B CN106244772 B CN 106244772B
- Authority
- CN
- China
- Prior art keywords
- stirring
- head
- pillar stand
- motor
- guide rod
- 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 - Fee Related
Links
- 238000003756 stirring Methods 0.000 title claims abstract description 61
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 22
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000003381 stabilizer Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 238000002474 experimental method Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009987 spinning Methods 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000006477 desulfuration reaction Methods 0.000 description 4
- 230000023556 desulfurization Effects 0.000 description 4
- 230000003009 desulfurizing effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/064—Dephosphorising; Desulfurising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses a kind of molten iron stirring desulphurization hydraulic model trial systems, and mainly including pedestal, lower pillar stand, agitating device and lifting gear, the lower end of lower pillar stand is fixed on pedestal, and the upper end of lower pillar stand is equipped with guide rod, and the upper end of guide rod is connected with upper pillar stand；Agitating device includes installing mechanism and rabbling mechanism, and rabbling mechanism is fixed by the connection of installing mechanism and upper pillar stand, and the rabbling mechanism includes stirring motor and stirring-head, and the motor shaft of stirring motor is connected with stirring-head；The driving end of lifting gear can be moved up and down along guide rod；A lifting gear overhanging stent is placed with hot-metal bottle on stent, and the stirring-head can be stretched into hot-metal bottle.Beneficial effects of the present invention are：Using lifting gear and two covering device of agitating device in the present invention, the spinning movement of stirring-head is detached with lifting action, structure is more firm, equipment itself vibrates the interference to water flow field when greatly reducing stirring, improve the accuracy of experiment, experimental error is reduced, more structurally sound reference can be provided for actual production.
Description
Technical field
The present invention relates to molten iron pretreatment and Desulphurization of Pig Iron fields, and in particular to a kind of molten iron stirring desulphurization water mould is real
Check system.
Background technology
Desulfurizing iron is one in steel and iron industry production procedure indispensable process, the stirring in Hot Metal Desulphurization Pretreatment Technology
Desulfurization, because its good economy is used widely in iron and steel metallurgical industry with practicability.
The hydraulic model trial of stirring desulphurization can improve Efficiency, and substantially reduce the financial cost of industry spot experiment.It stirs
The hydraulic model trial for mixing desulfurization mainly studies different stirring-heads and slips into depth, different mixing speeds in the difference of water mould hot-metal bottle
Under to iron melt desulfurizing agent be distributed so as to the influence of desulfurization effect.Accurate experimental observed data in order to obtain need to be stablized adjustable
Speed of agitator, and measure the stirring torque and power in stirring, while avoid equipment itself vibration to water mould stirring flow field
Interference.
However, in existing hydraulic model trial device, realize that stirring-head slips into iron by controlling the lifting of stirring-head mostly
The variation of water pot depth, the mixing part in experimental provision are related to rotating and lift two actions, cause Design of Mechanical Structure and
Electric wiring is more complicated, and whipping process is unstable, easily interferes water mould flow field, influences experimenter and stirring-head data are sentenced
Disconnected, there are errors for experimental result, it is difficult to provide reference for industrial production；Meanwhile entire experimental provision is complicated, is not easy to pacify
Adjustment tries and maintenance；Volume is big, and space is big.
Invention content
It is an object of the present invention in view of the deficiencies of the prior art, a kind of experiment molten iron accurate, simple in structure is provided and is stirred
Mix desulfurization hydraulic model trial system.
The technical solution adopted by the present invention is：A kind of molten iron stirring desulphurization hydraulic model trial system, mainly including pedestal, lower vertical
Column, agitating device and lifting gear, the lower end of the lower pillar stand are fixed on pedestal, and the upper end of lower pillar stand is equipped with guide rod, leads
It is connected to the upper end of bar with upper pillar stand；The agitating device includes installing mechanism and rabbling mechanism, and rabbling mechanism passes through fitting machine
Structure connect fixation with upper pillar stand, and the rabbling mechanism includes stirring motor and stirring-head, stirring motor and stirring motor controller
Electrical connection, the motor shaft of stirring motor are connected with stirring-head；The lifting gear is connected with guide rod, the driving end of lifting gear
It can be moved up and down along guide rod；A lifting gear overhanging stent is placed with hot-metal bottle, hot-metal bottle and stirring-head on stent
It is opposite up and down；The stirring-head can be stretched into hot-metal bottle.
By said program, the lifting gear includes lifting seat, leading screw, feed screw nut and screw drive mechanism, the liter
The side for dropping seat is equipped with sliding sleeve, and sliding sleeve is arranged on the guide bar, and sliding sleeve can be slided up and down along guide rod；The stent, which is mounted on, to be risen
The bottom of seat opposite side drops；The leading screw arranges that the both ends of leading screw pass through bearing assembly and upper pillar stand and lower pillar stand respectively vertically
Connection is fixed；The leading screw and feed screw nut phase configuration, feed screw nut are fixedly linked with lifting seat, and feed screw nut can drive lifting
Seat moves up and down.
By said program, the screw drive mechanism includes servo motor, and servo motor is electrically connected with servomotor controller
It connects；Servo motor is mounted on the lower part of lower pillar stand, is equipped with drive sprocket on the motor shaft of servo motor, drive sprocket passes through chain
Item is adapted with driven sprocket, and driven sprocket is mounted on the lower end of leading screw.
By said program, the rabbling mechanism further includes torque sensor and stirring fixture head, the motor shaft of stirring motor
It is connected with torque sensor, torque sensor is connected with stirring fixture head, stirs the upper end of fixture head and 3rd bearing component phase
Configuration；The upper end of the stirring-head is adapted with stirring fixture head；The torque sensor is electrically connected with torquemeter.
By said program, the installing mechanism includes cross bar and installing plate, and one end of cross bar and the outer wall of upper pillar stand connect
Fixed, the other end of cross bar is free end, and free end connect fixation with the installing plate being vertically arranged；The stirring motor, torque
Sensor and 3rd bearing component are sequentially arranged on installing plate from top to bottom.
By said program, the installing mechanism includes two cross bars, and the free end of two cross bars is separately fixed at installing plate
Upper and lower part.
By said program, the pedestal is gusseted seat, and pedestal includes three overhanging stabilizer blades, the bottom of each stabilizer blade
Threaded hole is offered, threaded hole is matched with adjusting bolt.
Beneficial effects of the present invention are：
1st, it is not interfere with each other independently of each other using two covering device of lifting gear and agitating device, this two covering device in the present invention,
Each apparatus structure relatively more simple and stable；In desulfurizing iron experiment, the spinning movement of stirring-head is detached with lifting action, single
Only stirring action and lifting action are easier realization, and operation is more stable, compared with integrating apparatus, is set when greatly reducing stirring
The standby interference itself vibrated to water flow field, improves the accuracy of experiment, reduces experimental error, can be provided more for actual production
Reliably to refer to.
2nd, the present invention realizes stirring and lifting using controller, and without human intervention, operation precision is compared with manual operation
Higher, experimental result are truer.
3rd, the lifting gear in the present invention and agitating device are installed on pedestal, and entire system is can adjust by adjusting bolt
The vertical degree of system.
4th, the present invention is reasonable in design, and controllability is strong, and stability is high；Small, occupied space is smaller, be easily installed and
Debugging and maintenance.
Description of the drawings
Fig. 1 is the structure diagram of a specific embodiment of the invention.
Fig. 2 is the front view of the present embodiment.
Fig. 3 is the left view of the present embodiment.
Fig. 4 is the bottom view of the present embodiment.
Wherein：1st, pedestal；2nd, lower pillar stand；3rd, guide rod；4th, upper pillar stand；5th, cross bar；6th, installing plate；7th, sliding sleeve；8th, stent；
9th, clutch shaft bearing component；10th, leading screw；11st, second bearing component；12nd, driven sprocket；13rd, chain；14th, drive sprocket；15th, it watches
Take motor；16th, adjusting bolt；17th, stirring motor；18th, first shaft coupling；19th, torque sensor；20th, second shaft coupling；21、
3rd bearing component；22nd, fixture head is stirred；23rd, stirring-head；24th, feed screw nut；25th, lifting seat；26th, stabilizer blade.
Specific embodiment
For a better understanding of the present invention, the present invention is further described in the following with reference to the drawings and specific embodiments.
A kind of molten iron stirring desulphurization hydraulic model trial system as shown in Figure 1 mainly includes pedestal 1, lower pillar stand 2, stirring dress
It puts and lifting gear, the lower end of the lower pillar stand 2 is fixed on pedestal 1, the upper end of lower pillar stand 1 is equipped with guide rod 3, guide rod 3
Upper end be connected with upper pillar stand 4；The agitating device include installing mechanism and rabbling mechanism, rabbling mechanism by installing mechanism with
The connection of upper pillar stand 4 is fixed, and the rabbling mechanism includes stirring motor 17 and stirring-head 23, and stirring motor 17 is controlled with stirring motor
Device is electrically connected, and the motor shaft of stirring motor 17 is connected with stirring-head 23；The lifting gear is connected with guide rod 3, lifting gear
Driving end can be moved up and down along guide rod 3；A lifting gear overhanging stent 8 is placed with hot-metal bottle, iron on stent 8
The stirring-head of water pot and rabbling mechanism is opposite about 23；The top of hot-metal bottle is equipped with opening, and the stirring-head 23 can be stretched through opening
Enter in hot-metal bottle.
In the present invention, driven as shown in figure 4, the lifting gear includes lifting seat 25, leading screw 10, feed screw nut 24 and leading screw
Motivation structure, the side of the lifting seat 25 are equipped with sliding sleeve 7, and sliding sleeve 7 is set on guide rod 3, and sliding sleeve 7 can be along guide rod about 3
It slides；The stent 8 is mounted on the bottom of 25 opposite side of lifting seat；The leading screw 10 arranges that the both ends of leading screw 10 are distinguished vertically
Fixation is connect with upper pillar stand 4 and lower pillar stand 2 by bearing assembly（It is connected by clutch shaft bearing component 9 with upper pillar stand 4, passes through
Two bearing assemblies 11 are connected with lower pillar stand 2）；Leading screw 10 and 24 phase configuration of feed screw nut, feed screw nut 24 are fixed with lifting seat 25
It is connected, feed screw nut 24 can drive lifting seat 25 to move up and down.
In the present invention, the screw drive mechanism includes servo motor 15, servo motor 15 and servomotor controller electricity
Connection；Servo motor 15 is mounted on the lower part of lower pillar stand（Inside or outside lower pillar stand 2）, servo motor 15
Drive sprocket 14 is installed, drive sprocket 14 is adapted by chain 13 with driven sprocket 12, and driven sprocket 12 is pacified on motor shaft
Mounted in the lower end of leading screw 10；Servo motor 15 moves leading screw 10 by pulley-sprocket-belt when rotating and rotates, so as to drive feed screw nut
24 and lifting seat 25 move up and down.Preferably, the screw drive mechanism can be also pulley transmission mechanism, drive 10 turns of leading screw
It is dynamic.
In the present invention, as shown in Figures 2 and 3, the rabbling mechanism further includes torque sensor 19 and stirring fixture head 22,
The motor shaft of stirring motor 17 is connected by first shaft coupling 18 with torque sensor 19, and torque sensor 19 passes through the second shaft coupling
Device 20 is connected with stirring fixture head 22, stirs the upper end of fixture head 22 and 21 phase configuration of 3rd bearing component；The stirring-head 23
Upper end with stirring fixture head 22 be adapted；The torque sensor 19 is electrically connected with torquemeter.
In the present invention, the installing mechanism includes cross bar 5 and installing plate 6, and one end of cross bar 5 connects with the outer wall of upper pillar stand 4
Connect fixation（It can be welding）, the other end of cross bar 5 is free end, and free end connect fixation with the installing plate 6 being vertically arranged（Can be
Welding）；The stirring motor 17, torque sensor 19 and 3rd bearing component 21 are sequentially arranged at installing plate 6 from top to bottom
On.Two cross bars 5 are equipped in the present embodiment, the free end of two cross bars 5 is separately fixed at the upper and lower part of installing plate 6.
In the present invention, the pedestal 1 is gusseted seat, and bottom and the pedestal 1 of the lower pillar stand 2 are welded and fixed；Pedestal 1
Including three overhanging stabilizer blades 26, the bottom of each stabilizer blade 26 offers threaded hole, and threaded hole is matched with adjusting bolt 16；It is logical
The height of three adjusting bolts 16 of control is crossed, can adjust the vertical state of whole system.
The present invention the course of work be：First, the revolution of stirring motor 17 is set on stirring motor controller；Then,
Stirring motor controller driving stirring motor 17 rotates, so as to drive torque sensor 19, stirring fixture head 22 and stirring-head 23
It rotates simultaneously, the parameters such as the actual speed of stirring-head 23, torque and power are sent to torsion in real time by torque sensor 19 at this time
Square instrument；Then, servomotor controller is operated, drive 15 rotating of servo motor and passes through pulley-sprocket-belt to move leading screw 10 positive and negative
To rotation, lifting seat 25 and stent 8 is driven to move up and down with the feed screw nut 24 that leading screw 10 coordinates, the molten iron being placed on stent 8
Tank moves up and down therewith, stretches into or exit hot-metal bottle so as to fulfill stirring-head 23.The depth that stirring-head 23 stretches into hot-metal bottle can be by
Servomotor controller is adjusted according to the rotating of leading screw 10.
It these are only the preferred embodiment of the present invention, the scope of the claims being not intended to restrict the invention is every to utilize this hair
The equivalent structure or equivalent flow shift that bright specification and accompanying drawing content are done directly or indirectly is used in other relevant skills
Art field, is included within the scope of the present invention.
Claims (6)
1. a kind of molten iron stirring desulphurization hydraulic model trial system, which is characterized in that mainly including pedestal, lower pillar stand, agitating device and
Lifting gear, the lower end of the lower pillar stand are fixed on pedestal, and the upper end of lower pillar stand is equipped with guide rod, the upper end of guide rod with it is upper
Column is connected；The agitating device includes installing mechanism and rabbling mechanism, and rabbling mechanism is connect by installing mechanism with upper pillar stand
Fixed, the rabbling mechanism includes stirring motor and stirring-head, and stirring motor is electrically connected with stirring motor controller, stirring motor
Motor shaft be connected with stirring-head；The lifting gear is connected with guide rod, and the driving end of lifting gear can be along above and below guide rod
It is mobile；A lifting gear overhanging stent is placed with hot-metal bottle on stent, and hot-metal bottle is opposite up and down with stirring-head；It is described
Stirring-head can be stretched into hot-metal bottle；The lifting gear includes lifting seat, leading screw, feed screw nut and screw drive mechanism, described
The side of lifting seat is equipped with sliding sleeve, and sliding sleeve is arranged on the guide bar, and sliding sleeve can be slided up and down along guide rod；The stent is mounted on
The bottom of lifting seat opposite side；The leading screw arranges vertically, and the both ends of leading screw are respectively by bearing assembly and upper pillar stand and lower vertical
Column connection is fixed；The leading screw and feed screw nut phase configuration, feed screw nut are fixedly linked with lifting seat, and feed screw nut can drive liter
Drop seat moves up and down.
A kind of 2. molten iron stirring desulphurization hydraulic model trial system as described in claim 1, which is characterized in that the leading screw driving machine
Structure includes servo motor, and servo motor is electrically connected with servomotor controller；Servo motor is mounted on the lower part of lower pillar stand, servo
Drive sprocket is installed, drive sprocket is adapted by chain with driven sprocket, and driven sprocket is mounted on the motor shaft of motor
The lower end of leading screw.
3. a kind of molten iron stirring desulphurization hydraulic model trial system as described in claim 1, which is characterized in that the rabbling mechanism is also
Including torque sensor and stirring fixture head, the motor shaft of stirring motor is connected with torque sensor, torque sensor and stirring
Fixture head is connected, and stirs the upper end of fixture head and 3rd bearing component phase configuration；The upper end of the stirring-head and stirring fixture head
It is adapted；The torque sensor is electrically connected with torquemeter.
A kind of 4. molten iron stirring desulphurization hydraulic model trial system as claimed in claim 3, which is characterized in that the installing mechanism packet
Include cross bar and installing plate, one end of cross bar and the outer wall connection of upper pillar stand are fixed, and the other end of cross bar is free end, free end with
The installing plate connection being vertically arranged is fixed；The stirring motor, torque sensor and 3rd bearing component are from top to bottom successively
Installation is on a mounting board.
A kind of 5. molten iron stirring desulphurization hydraulic model trial system as claimed in claim 4, which is characterized in that the installing mechanism packet
Two cross bars are included, the free end of two cross bars is separately fixed at the upper and lower part of installing plate.
6. a kind of molten iron stirring desulphurization hydraulic model trial system as described in claim 1, which is characterized in that the pedestal is triangle
Support base, pedestal include three overhanging stabilizer blades, and the bottom of each stabilizer blade offers threaded hole, and threaded hole matches with adjusting bolt
It closes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610642680.6A CN106244772B (en) | 2016-08-08 | 2016-08-08 | A kind of molten iron stirring desulphurization hydraulic model trial system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610642680.6A CN106244772B (en) | 2016-08-08 | 2016-08-08 | A kind of molten iron stirring desulphurization hydraulic model trial system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106244772A CN106244772A (en) | 2016-12-21 |
| CN106244772B true CN106244772B (en) | 2018-06-08 |
Family
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| CN201610642680.6A Expired - Fee Related CN106244772B (en) | 2016-08-08 | 2016-08-08 | A kind of molten iron stirring desulphurization hydraulic model trial system |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106987682B (en) * | 2016-01-20 | 2018-12-04 | 宝山钢铁股份有限公司 | A kind of flow control device in KR desulfurization hot-metal bottle |
| CN108931659A (en) * | 2017-05-27 | 2018-12-04 | 江西光明智能科技有限公司 | A kind of on-line automatic determination of moisture system |
| CN110484674A (en) * | 2018-05-15 | 2019-11-22 | 宝山钢铁股份有限公司 | A kind of molten iron stirring desulphurization hot test system |
| CN114053901A (en) * | 2021-11-11 | 2022-02-18 | 安徽工程大学 | Intelligent magnetic fluid preparation device and application method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19719085A1 (en) * | 1997-04-30 | 1998-11-05 | Ver Energiewerke Ag | process simulation for use in a desulphurising process in a coal fired plant |
| CN201527736U (en) * | 2009-08-31 | 2010-07-14 | 武汉钢铁(集团)公司 | Simulating experiment device for molten iron desulphurizing |
| CN204714840U (en) * | 2015-06-26 | 2015-10-21 | 武汉钢铁(集团)公司 | For the stirring-head lifting device of desulfurizing iron hydraulic model trial |
| CN204714852U (en) * | 2015-06-26 | 2015-10-21 | 武汉钢铁(集团)公司 | For the whipping appts of desulfurizing iron hydraulic model trial |
-
2016
- 2016-08-08 CN CN201610642680.6A patent/CN106244772B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19719085A1 (en) * | 1997-04-30 | 1998-11-05 | Ver Energiewerke Ag | process simulation for use in a desulphurising process in a coal fired plant |
| CN201527736U (en) * | 2009-08-31 | 2010-07-14 | 武汉钢铁(集团)公司 | Simulating experiment device for molten iron desulphurizing |
| CN204714840U (en) * | 2015-06-26 | 2015-10-21 | 武汉钢铁(集团)公司 | For the stirring-head lifting device of desulfurizing iron hydraulic model trial |
| CN204714852U (en) * | 2015-06-26 | 2015-10-21 | 武汉钢铁(集团)公司 | For the whipping appts of desulfurizing iron hydraulic model trial |
Non-Patent Citations (1)
| Title |
|---|
| 铁水罐KR机械搅拌式脱硫水模试验研究及应用;曾彤 等;《冶金信息导刊》;20070630(第3期);第27-29页 * |
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| CN106244772A (en) | 2016-12-21 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20170630 Address after: 430083, Gate No. 2, Qingshan District, Hubei, Wuhan Applicant after: WUHAN IRON AND STEEL Co.,Ltd. Address before: 430083 Wuhan factory in Hubei Province before the door No. 2 Applicant before: WUHAN IRON AND STEEL Co.,Ltd. |
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Granted publication date: 20180608 |