CN103480811B - Equipment and process for manufacturing belt in quenching mode - Google Patents
Equipment and process for manufacturing belt in quenching mode Download PDFInfo
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- CN103480811B CN103480811B CN201310476390.5A CN201310476390A CN103480811B CN 103480811 B CN103480811 B CN 103480811B CN 201310476390 A CN201310476390 A CN 201310476390A CN 103480811 B CN103480811 B CN 103480811B
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Abstract
The invention discloses equipment for manufacturing a belt in a quenching mode. The equipment comprises a first hydraulic cylinder, a siphon, a magnetic reeling machine, a cooling roller, a cooling track matched with the cooling roller, a liftable tundish ascending and descending through the hydraulic cylinder, a nozzle package communicated with the liftable tundish through the siphon, a base arranged at the bottom of the nozzle package and a second hydraulic cylinder which is arranged between the nozzle package and the base and can drive the nozzle package to ascend and descend, a cooling channel is formed between the cooling roller and the cooling track, a nozzle of the nozzle package corresponds to an inlet of the cooling channel, the magnetic winding drum of the magnetic reeling machine corresponds to an outlet of the cooling channel, and the length of the cooling channel is larger than one fourth of the perimeter of the cooling roller and smaller than one half of the perimeter of the cooling roller. The nozzle of the nozzle package is arranged above the central line of the cooling roller. A lifting blocking plate capable of controlling the speed of metal liquid flowing out of the nozzle is arranged in the nozzle package. According to the equipment and process, steel belts of different thicknesses can be produced conveniently, the cooling effect is good, and the final performance of materials is easy to control.
Description
Technical field
The present invention relates to materials processing and manufacturing technology field, refer to a kind of instrument and supplies of chilling band particularly.
Background technology
The equipment of the chilling band of current routine is mainly horizontal double-roller formula strip rolling-casting machine, reducing twin-roll cast-rolling mill, mono-roller type strip rolling-casting machine and belt casting and rolling machine.
Specifically, horizontal double-roller formula strip rolling-casting facility have structure simple, be easy to the advantages such as control, two-sided crystallization, internal soundness are good.But this casting and rolling machine line stability is poor, prevents secondary oxidation ability, and scum silica frost is involved in influence zone steel quality, and side sealing has overlap, require strict with pans side seal board, perishable and change difficulty.In addition, double-roll type be two-sidedly to solidify, two-sided cooling, cooling arc length is little, 1/4 of not enough chill roll girth, and the temperature that band steel goes out roll gap is higher, and reach more than 1000 DEG C, material is still in phase transition process, and the final performance of material is wayward.
In two rollers of reducing twin-roll cast-rolling mill, internal water cooling system is all housed, it is simple that it has equipment, and integral cast system lock is good, without secondary oxidation, the metal liquid entering casting and rolling machine is steady, and centre is surrounded by the measure of envelope slag, side seal easily solves, and tundish metal liquid can use after having cast continuously.But 1/8 of the not enough chill roll girth of two roller cooling arc length that reducing tilts, the temperature that band steel goes out roll gap is higher, and reach more than 1000 DEG C, material is still in phase transition process, and the final performance of material is wayward.
The advantage of mono-roller type strip rolling-casting machine be equipment simply and easily control, have the envelope slag measure preventing secondary oxidation, pans are added a cover and are protected, and strip width can be regulated by pans lip.Shortcoming is one side crystallization, and slab quality is unstable.
The feature of belt casting and rolling machine casting strip base process is, metal liquid is by fixing metal liquid injected system, and note on the portable sheet iron strip of casting and rolling machine or copper strips, sheet iron strip or copper strips are furnished with the strong cooling system of water spray and impel metal liquid to solidify, and form 8 ~ 15mm Deformation in thick; After band steel enters two cold-zones, temperature is adjusted to proper level, to make strip obtain the performance being with steel to require in continuous rolling process subsequently, coil of strip finally will be with for band coil of strip.Belt casting and rolling machine can realize one side and solidify, and one side cooling (single tape formula), also can realize two-sided solidifying and two-sided cooling (double belt), but speed is low, Cast Strip is thicker, minimum thickness 8mm, is not suitable for the pilot production of carrying out strip and strip in razor-thin.
Summary of the invention
Object of the present invention is exactly the instrument and supplies that will provide a kind of chilling band, and this equipment and process conveniently can produce the steel band of different-thickness, and cooling effect is better, and the final performance of material easily controls.
For realizing this object, the equipment of the chilling band designed by the present invention, it is characterized in that: it comprises the first hydraulic cylinder, siphon pipe, magnetic coiling machine, chill roll, the cooling crawler belt mated with chill roll, the Liftable type tundish be elevated is carried out by hydraulic cylinder, by the nozzle bag that siphon pipe is communicated with Liftable type tundish, be arranged on the base bottom nozzle bag, be arranged on second hydraulic cylinder that also nozzle bag can be driven to be elevated between nozzle bag and base, wherein, cooling duct is formed between described chill roll and cooling crawler belt, the nozzle of nozzle bag is corresponding with the entrance of cooling duct, the magnetic reel of magnetic coiling machine is corresponding with the outlet of cooling duct, the length of described cooling duct is greater than 1/4th of chill roll girth, be less than 1/2nd of chill roll girth, the nozzle of described nozzle bag is positioned at the top of chill roll center line, be provided with in described nozzle bag and can control the lift seben of metal liquid from the nozzle rate of outflow.
The sidewall of described Liftable type tundish, siphon pipe and nozzle bag is equipped with induction heating apparatus.
In technique scheme, it also comprises the spiro rod regulating device being arranged on base side, and the fixed head of described spiro rod regulating device is fixedly connected with ground, and the adjusting bolt of spiro rod regulating device connects base side and fixed head.
In technique scheme, it also comprises hydraulic servo control system, and the control signal output of described hydraulic servo control system connects the control signal input of the first hydraulic cylinder and the second hydraulic cylinder respectively.
Described nozzle is strip, and the die gap scope of strip nozzle is 0.3 ~ 60mm, and the width range of strip nozzle is 30 ~ 3000mm.
The cavity of described nozzle bag is flat elliptical cavity, and the width range of cavity is that the width of nozzle adds 10 ~ 100mm.
Described Liftable type tundish is made up of tundish inclusion and the tundish upper cover that tundish inclusion can be carried out sealing; Described nozzle bag is by nozzle handbag body and the nozzle that nozzle handbag body carries out sealing can be wrapped lid and form.
Utilize a chilling band method for the equipment of above-mentioned chilling band, it is characterized in that, it comprises the steps:
Step 1: Liftable type tundish is adjusted to extreme higher position, injects metal liquid in Liftable type tundish;
Step 2: vacuumize process to nozzle bag, makes metal liquid constantly flow to nozzle bag from Liftable type tundish by siphon pipe;
Step 3: when nozzle bag inner metal liquid dignity reaches 1/3 ~ 3/4 nozzle bag height, promotes lift seben, metal liquid is sprayed from nozzle;
Step 4: while step 3 is carried out, controls the first hydraulic cylinder and/or the second hydraulic cylinder makes Liftable type tundish inner metal liquid body fluid face and nozzle bag inner metal liquid body fluid face be consistent;
Step 5: metal liquid is sprayed onto on chill roll by nozzle and initially cools, then cooling duct is entered through initial cooled metal liquid, along with chill roll and the rotation cooling crawler belt, in cooling duct, realize two-sided cooling through initial cooled metal liquid thus solidify formation band, when strip temperature is down to below phase transition temperature, exported by the outlet of cooling duct;
Step 6: band from cooling duct out while, chill roll is close to by the magnetic reel of magnetic coiling machine, band is held and batches, simultaneously the magnetic reel of magnetic coiling machine is drawn back, to ensure the continuity of batching, after the magnetic reel of magnetic coiling machine falls back on fixed position, the magnetic reel of magnetic coiling machine can normally batch, namely complete the technique of whole chilling band, the determination principle of above-mentioned fixed position is: during the maximum coil diameter of metallic coil, do not interfere with chill roll.
In step 1, after metal liquid injects Liftable type tundish, in Liftable type tundish, be filled with protective gas; In step 2, when metal liquid flows to nozzle bag from Liftable type tundish by siphon pipe, then fill protective gas to nozzle bag, make the pressure limit in nozzle bag remain on 0.10 ~ 0.25Mpa.
In described step 5, described phase transition temperature is 600 DEG C; Described chill roll is identical with the linear velocity that cooling crawler belt rotates.
Beneficial effect of the present invention is:
1: Liftable type tundish of the present invention, siphon pipe, nozzle bag three parts are all with induction heating apparatus, ensure that the constant of metal liquid temperature, the change of metal liquid temperature can be controlled in ± and 5 DEG C; Liftable type tundish is communicated with nozzle bag by ceramic siphon pipe, ensure that the stable of nozzle bag inner metal liquid body fluid face, ensure that the constant flow that metal liquid sprays.
2: nozzle is strip, can from 30 ~ 3000mm according to bandwidth requirement nozzle width; Require that die gap scope is 0.3 ~ 60mm according to tape thickness.Can produce by selecting the nozzle of different size that thickness range is 0.03 ~ 10mm, width range is the band of 30 ~ 3000mm.
3: the cavity of nozzle bag is flat elliptical cavity (can adapt to producing of different in width steel band), the width range of cavity is that the width of nozzle adds 10 ~ 100mm.
4: pouring type of the present invention is side note formula, metal liquid is sprayed onto on chill roll from nozzle, and nozzle bag is adjusted up and down by the second hydraulic cylinder below, and adjusting range is 0 ~ 10mm, nozzle bag carries out front and back fine setting by spiro rod regulating device, thus ensures that stable watering outpours qualified band.
5: chill roll is identical with the linear velocity of band, first metal liquid is sprayed onto on chill roll and carries out chilling, enter chill roll again and carry out two-sided chilling with the gap of cooling crawler belt, therefore, band is in two-sided quenched condition from quench solidification to outlet always, thus improve cooling effect of the present invention, the strip temperature in exit, cooling duct is lower than 600 DEG C of phase transition temperature, and the final performance of material is more prone to control.
6: band from cooling duct out while, chill roll is close to by the magnetic reel of magnetic coiling machine, band is held and batches, the magnetic reel of magnetic coiling machine is drawn back simultaneously, to ensure the continuity of batching, after the magnetic reel of magnetic coiling machine falls back on fixed position, the magnetic reel of magnetic coiling machine can normally batch.Improve the success rate of automatic rolling and operating rate (year normal production time/total time in year).
7: the present invention does not adopt lateral seal, avoid the technical problem that side sealing has overlap.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Wherein, 1-Liftable type tundish, 1.1-tundish inclusion, 1.2-tundish upper cover, 2-siphon pipe, 3-nozzle bag, 3.1-nozzle, 3.2-lift seben, 3.3-nozzle handbag body, 3.4-nozzle wrap lid, 4-chill roll, 5-magnetic coiling machine, 6-cooling crawler belt, the 7-the second hydraulic cylinder, 8-induction heating apparatus, 9-spiro rod regulating device, 9.1-fixed head, 9.2-adjusting bolt, 10-hydraulic servo control system, the 11-the first hydraulic cylinder, 12-base.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
The equipment of the chilling band shown in Fig. 1, it comprises the first hydraulic cylinder 11, siphon pipe 2, magnetic coiling machine 5, chill roll 4, the cooling crawler belt 6 mated with chill roll 4, the Liftable type tundish 1 be elevated is carried out by hydraulic cylinder 11, by the nozzle bag 3 that siphon pipe 2 is communicated with Liftable type tundish 1, be arranged on the base 12 bottom nozzle bag 3, be arranged on second hydraulic cylinder 7 that also nozzle bag 3 can be driven to be elevated between nozzle bag 3 and base 12, wherein, cooling duct is formed between described chill roll 4 and cooling crawler belt 6, the nozzle 3.1 of nozzle bag 3 is corresponding with the entrance of cooling duct, the magnetic reel of magnetic coiling machine 5 is corresponding with the outlet of cooling duct, the length of described cooling duct is greater than 1/4th of chill roll 4 girth, be less than 1/2nd (cooling distances of chill roll 4 girth, be convenient to the control of steel band interior tissue, improve surface quality), the nozzle 3.1 of described nozzle bag 3 is positioned at the top (molten steel relies on deadweight dirty, solidification-stable) of chill roll 4 center line, be provided with in described nozzle bag 3 and can control the lift seben 3.2 of metal liquid from nozzle 3.1 rate of outflow.Above-mentioned siphon pipe 2 is ceramic siphon pipe.Above-mentioned cooling duct is two-sided crystallization, two-sided cooling structure.
In technique scheme, the sidewall of Liftable type tundish 1, siphon pipe 2 and nozzle bag 3 is equipped with induction heating apparatus 8.Above-mentioned induction heating apparatus 8 is for ensureing the stable of metal fluid temperature.
In technique scheme, it also comprises the spiro rod regulating device 9 being arranged on base 12 side, and the fixed head 9.1 of described spiro rod regulating device 9 is fixedly connected with ground, and the adjusting bolt 9.2 of spiro rod regulating device 9 connects base 12 side and fixed head 9.1.Above-mentioned spiro rod regulating device 9 is for carrying out horizontal adjustment to the position of nozzle bag 3.
In technique scheme, it also comprises hydraulic servo control system 10, and the control signal output of described hydraulic servo control system 10 connects the control signal input of the first hydraulic cylinder 11 and the second hydraulic cylinder 7 respectively.
In technique scheme, described nozzle 3.1 is strip, and the die gap scope of strip nozzle is 0.3 ~ 60mm, and the width range of strip nozzle is 30 ~ 3000mm.
In technique scheme, the cavity of described nozzle bag 3 is flat elliptical cavity (reducing to concentrate thermal stress), and the width range of cavity is that the width of nozzle 3.1 adds 10 ~ 100mm.
In technique scheme, described Liftable type tundish 1 is by tundish inclusion 1.1 and the tundish upper cover 1.2 that tundish inclusion 1.1 carries out sealing can be formed; Described nozzle bag 3 is by nozzle handbag body 3.3 and the nozzle that nozzle handbag body 3.3 carries out sealing can be wrapped lid 3.4 and form.
Utilize a chilling band method for the equipment of above-mentioned chilling band, it is characterized in that, it comprises the steps:
Step 1: Liftable type tundish 1 is adjusted to extreme higher position (i.e. the extreme higher position that can rise of tundish, now, molten steel face is the highest, and pressure is maximum, is convenient to by siphon pipe flow nozzle bag 3), metal liquid (molten steel) is injected in Liftable type tundish 1;
Step 2: vacuumize process to nozzle bag 3, makes metal liquid constantly flow to nozzle bag 3 from Liftable type tundish 1 by siphon pipe 2;
Step 3: when nozzle bag 3 inner metal liquid dignity reaches 1/3 ~ 3/4 nozzle bag height, promotes lift seben 3.2, metal liquid is sprayed from nozzle 3.1;
Step 4: while step 3 is carried out, controls the first hydraulic cylinder 11 by hydraulic servo control system 10 and/or the second hydraulic cylinder 7 makes Liftable type tundish 1 inner metal liquid body fluid face and nozzle bag 3 inner metal liquid body fluid face be consistent;
Step 5: metal liquid is sprayed onto on chill roll 4 by nozzle 3.1 and initially cools, then cooling duct is entered through initial cooled metal liquid, along with chill roll 4 and the rotation cooling crawler belt 6, in cooling duct, realize two-sided cooling through initial cooled metal liquid thus solidify formation band, (due to 1/8 of the not enough chill roll girth of cooling arc length in prior art when strip temperature is down to below phase transition temperature, the temperature going out roll gap with steel is higher, reach more than 1000 DEG C, material is still in phase transition process, the final performance of material is wayward), exported by the outlet of cooling duct,
Step 6: band from cooling duct out while, chill roll 4 is close to by the magnetic reel of magnetic coiling machine 5, band is held and batches, the magnetic reel of magnetic coiling machine 5 is drawn back simultaneously, to ensure the continuity of batching, after the magnetic reel of magnetic coiling machine 5 falls back on fixed position, the magnetic reel of magnetic coiling machine 5 can normally batch (above-mentioned magnetic coiling machine 5 is dual-reel coiler), namely the technique of whole chilling band is completed, the determination principle of above-mentioned fixed position is: during the maximum coil diameter of coil of strip, do not interfere with chill roll 4.
In the step 1 of technique scheme, after metal liquid injects Liftable type tundish 1, in Liftable type tundish 1, be filled with protective gas; In step 2, when metal liquid flows to nozzle bag 3 from Liftable type tundish 1 by siphon pipe 2, then fill protective gas to nozzle bag 3, make the pressure limit in nozzle bag 3 remain on the pressure-fired of 0.10 ~ 0.25Mpa, above-mentioned protective gas is argon gas or nitrogen.Scheme in such scheme and step 4 combines and significantly can improve the stability of liquid level, effectively can prevent secondary oxidation.
In the step 5 of technique scheme, for ordinary carbon steel, described phase transition temperature is 600 DEG C; Described chill roll 4 is identical with the linear velocity that cooling crawler belt 6 rotates, and ensure that the stable of band internal structure.
The content that this description is not described in detail belongs to the known prior art of professional and technical personnel in the field.
Claims (9)
1. the equipment of a chilling band, it is characterized in that: it comprises the first hydraulic cylinder (11), siphon pipe (2), magnetic coiling machine (5), chill roll (4), the cooling crawler belt (6) mated with chill roll (4), the Liftable type tundish (1) be elevated is carried out by the first hydraulic cylinder (11), by the nozzle bag (3) that siphon pipe (2) is communicated with Liftable type tundish (1), be arranged on the base (12) of nozzle bag (3) bottom, be arranged on second hydraulic cylinder (7) that also nozzle bag (3) can be driven to be elevated between nozzle bag (3) and base (12), wherein, cooling duct is formed between described chill roll (4) and cooling crawler belt (6), the nozzle (3.1) of nozzle bag (3) is corresponding with the entrance of cooling duct, the magnetic reel of magnetic coiling machine (5) is corresponding with the outlet of cooling duct, the length of described cooling duct is greater than 1/4th of chill roll (4) girth, be less than 1/2nd of chill roll (4) girth, the nozzle (3.1) of described nozzle bag (3) is positioned at the top of chill roll (4) center line, be provided with in described nozzle bag (3) and the lift seben (3.2) of metal liquid from nozzle (3.1) rate of outflow can be controlled, it also comprises the spiro rod regulating device (9) being arranged on base (12) side, the fixed head (9.1) of described spiro rod regulating device (9) is fixedly connected with ground, and the adjusting bolt (9.2) of spiro rod regulating device (9) connects base (12) side and fixed head (9.1).
2. the equipment of chilling band according to claim 1, is characterized in that: the sidewall of described Liftable type tundish (1), siphon pipe (2) and nozzle bag (3) is equipped with induction heating apparatus (8).
3. the equipment of chilling band according to claim 1, it is characterized in that: it also comprises hydraulic servo control system (10), the control signal output of described hydraulic servo control system (10) connects the control signal input of the first hydraulic cylinder (11) and the second hydraulic cylinder (7) respectively.
4. the equipment of chilling band according to claim 1, is characterized in that: described nozzle (3.1) is strip, and the die gap scope of strip nozzle is 0.3 ~ 60mm, and the width range of strip nozzle is 30 ~ 3000mm.
5. the equipment of chilling band according to claim 4, is characterized in that: the cavity of described nozzle bag (3) is flat elliptical cavity, and the width range of cavity is that the width of nozzle (3.1) adds 10 ~ 100mm.
6. the equipment of chilling band according to claim 1, is characterized in that: described Liftable type tundish (1) is made up of tundish inclusion (1.1) and the tundish upper cover (1.2) that tundish inclusion (1.1) can be carried out seal; Described nozzle bag (3) is by nozzle handbag body (3.3) and the nozzle that nozzle handbag body (3.3) carries out sealing can be wrapped lid (3.4) and form.
7. utilize the equipment of chilling band any one of claim 1 ~ 6 to carry out a method for chilling band, it is characterized in that, it comprises the steps:
Step 1: Liftable type tundish (1) is adjusted to extreme higher position, injects metal liquid in Liftable type tundish (1);
Step 2: vacuumize process to nozzle bag (3), makes metal liquid constantly flow to nozzle bag (3) from Liftable type tundish (1) by siphon pipe (2);
Step 3: when nozzle bag (3) inner metal liquid dignity reaches 1/3 ~ 3/4 nozzle bag height, promotes lift seben (3.2), metal liquid is sprayed from nozzle (3.1);
Step 4: while step 3 is carried out, controls the first hydraulic cylinder (11) and/or the second hydraulic cylinder (7) makes Liftable type tundish (1) inner metal liquid body fluid face and nozzle bag (3) inner metal liquid body fluid face be consistent;
Step 5: metal liquid is sprayed onto on chill roll (4) by nozzle (3.1) and initially cools, then cooling duct is entered through initial cooled metal liquid, along with chill roll (4) and the rotation cooling crawler belt (6), in cooling duct, realize two-sided cooling through initial cooled metal liquid thus solidify formation band, when strip temperature is down to below phase transition temperature, exported by the outlet of cooling duct;
Step 6: band from cooling duct out while, chill roll (4) is close to by the magnetic reel of magnetic coiling machine (5), band is held and batches, the magnetic reel of magnetic coiling machine (5) is drawn back simultaneously, to ensure the continuity of batching, after the magnetic reel of magnetic coiling machine (5) falls back on fixed position, the magnetic reel of magnetic coiling machine (5) can normally batch, namely the technique of whole chilling band is completed, the determination principle of above-mentioned fixed position is: during the maximum coil diameter of metallic coil, do not interfere with chill roll (4).
8. chilling band method according to claim 7, is characterized in that: in described step 1, injects in Liftable type tundish (1) backward Liftable type tundish (1) be filled with protective gas at metal liquid; In step 2; when metal liquid flows to nozzle bag (3) from Liftable type tundish (1) by siphon pipe (2); fill protective gas to nozzle bag (3) again, make the pressure limit in nozzle bag (3) remain on 0.10 ~ 0.25Mpa.
9. chilling band method according to claim 7, is characterized in that: in step 5, and described phase transition temperature is 600 DEG C; Described chill roll (4) is identical with the linear velocity that cooling crawler belt (6) is rotated.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310476390.5A CN103480811B (en) | 2013-10-12 | 2013-10-12 | Equipment and process for manufacturing belt in quenching mode |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310476390.5A CN103480811B (en) | 2013-10-12 | 2013-10-12 | Equipment and process for manufacturing belt in quenching mode |
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| CN103480811B true CN103480811B (en) | 2015-07-01 |
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|---|---|---|---|---|
| CN103752785B (en) * | 2014-01-21 | 2015-09-02 | 罗冉 | A kind of rapid solidification metal strip production device and method thereof |
| CN104624996B (en) * | 2015-02-05 | 2017-08-11 | 澳洲澳秀科技有限公司 | Conticaster molten steel distributor and its liquid steel level control method |
| CN105834382B (en) * | 2015-12-31 | 2018-02-23 | 安泰科技股份有限公司 | A kind of molten steel feed system for being used to prepare amorphous band |
| CN106979630A (en) * | 2017-04-13 | 2017-07-25 | 朗峰新材料科技股份有限公司 | A kind of modified chill roll cooling system of carrying device processed |
| CN108115919A (en) * | 2017-12-14 | 2018-06-05 | 爱思开希（江苏）尖端塑料有限公司 | A kind of film extrusion molding system |
| WO2020049343A1 (en) * | 2018-09-07 | 2020-03-12 | Arcelormittal | Magnetic cooling roll |
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Effective date of registration: 20170718 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuchang, Hubei Friendship Road, No. A, block, floor 999, 15 Patentee before: Wuhan Iron & Steel (Group) Corp. |
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Granted publication date: 20150701 Termination date: 20191012 |
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| CF01 | Termination of patent right due to non-payment of annual fee |