CN102019391B - Steel pipe continuous casting equipment - Google Patents
Steel pipe continuous casting equipment Download PDFInfo
- Publication number
- CN102019391B CN102019391B CN 200910187302 CN200910187302A CN102019391B CN 102019391 B CN102019391 B CN 102019391B CN 200910187302 CN200910187302 CN 200910187302 CN 200910187302 A CN200910187302 A CN 200910187302A CN 102019391 B CN102019391 B CN 102019391B
- Authority
- CN
- China
- Prior art keywords
- crystallizer
- steel
- interior
- continuous casting
- cooling
- 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.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 50
- 239000010959 steel Substances 0.000 title claims abstract description 50
- 238000009749 continuous casting Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000001816 cooling Methods 0.000 claims description 39
- 239000010949 copper Substances 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 230000010355 oscillation Effects 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 2
- 238000004880 explosion Methods 0.000 abstract description 2
- 230000036314 physical performance Effects 0.000 abstract 1
- 238000005266 casting Methods 0.000 description 10
- 239000007789 gas Substances 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000013019 agitation Methods 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000009750 centrifugal casting Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Abstract
The invention relates to steel pipe continuous casting equipment which comprises a pouring box, a stopper, a vibrating table, a combined crystallizer, a cutter and a three-roller pinch device, wherein the stopper is installed in the pouring box fixed on a platform; the pouring box is provided with a pouring box water gap which is connected with an inner and an outer crystallizers; the combined crystallizer comprises the inner and the outer crystallizers which are fixed on a vibrating table rack; the three-roller pinch device is installed on an vertical post; the cutter is installed under the vertical post; the inner and the outer crystallizers comprise two concentric circles of different diameters; a diameter difference is twice the thickness of a steel billet wall to be cast; the inner and the outer crystallizers are simultaneously fixed on the vibrating table rack by four single arms forming an angle of 90 DEG or three single arms forming an angle of 120 DEG; the three-roller pinch device is arranged in the position away from the lower parts of the inner and the outer crystallizers by 6 m to 8 m; and the cutter is arranged in the position away from the lower parts of the inner and the outer crystallizers by 15 m to 18 m. The equipment thoroughly solves the problem of stock holding without slide and explosion caused by steel leakage, and improves the organizational structure of a steel stock so that the physical performance of the stock is enhanced.
Description
Technical field
The present invention relates to a kind of continuous casting steel pipe (open circles base) equipment, belong to the Ferrous Metallurgy field.
Technical background
As everyone knows, production technology of steel tube except using the Plate Welding explained hereafter, utilizes the roll piercing rolling seamless steel pipe by casting filled circles base exactly now, in addition, utilizes centrifugal casting technique to produce steel pipe and open circles steel billet.But centrifugal casting technique, production capacity is low, and cost is high, and certain limitation is arranged.
Since nearly half a century, the numerous developed countries in the world all drop into a large amount of man power and materials, and research so far, has all obtained certain phasic results with direct continuous casting process production open circles base and steel pipe, but also do not have a company to drop into suitability for industrialized production.Its reason is, because shrinking, molten steel solidification holds crystallizer tightly, cause the slippage difficulty, easily make molten steel bleedout in crystallization process of interior crystallizer contact, cause bleed-out to be combined with secondary cooling water, easily produce the problems such as explosion accident, cause the hollow bloom continuous casting also not have one to drop into suitability for industrialized production.
Summary of the invention
The object of the present invention is to provide a kind of steel pipe continuous casting equipment.This equipment can cast external diameter φ 300-φ 2000mm continuously, and wall thickness is greater than the casting steel tube of 70mm-300mm.
The technical scheme that adopts is:
A kind of steel pipe continuous casting equipment comprises tundish, stopper, shake table, fourplatemold, cooling device, shear, three roller clamping and conveying devices.Described stopper is installed in the tundish, described tundish is fixed on the platform, middle water containing opening is installed on the tundish, described middle water containing opening is connected with described inside and outside crystallizer, described fourplatemold is comprised of interior crystallizer and outer crystallizer, and inside and outside crystallizer is fixed on the vibration stand.Described cooling device is made of cooling device and secondary cooling apparatus.Described three roller clamping and conveying devices are installed on the column, and bottom is equipped with shear, and its characteristics are:
Inside and outside crystallizer is comprised of two different-diameter concentric circles, the difference of two concentric circles diameters is two times of steel billet wall thickness to be cast, inside and outside crystallizer is fixed on the vibration stand simultaneously by being mutually four single armeds of 90 ° or being mutually 120 ° of three single armeds, described three roller clamping and conveying devices are arranged on the 6-8m place, below of inside and outside crystallizer, and described shear is arranged on 15-18m place, inside and outside crystallizer below.
Above-mentioned inside and outside crystallizer all adopts the circular seam type water-cooling structure, and circumferential weld is selected between the 2-6mm, and the water cooling flow velocity is greater than 10m/sec, and water cooling pressure is greater than 1.2MPa.
Above-mentioned outer crystallizer is by clean steel chromium plating or nonmagnetic stainless steel or copper one-tenth, outer crystallizer adopts the circular seam type water-cooling system, circumferential weld 2-6mm, the water-cooled flow velocity of steel crystalliser is greater than 10m/sec, water cooling pressure is greater than 1.2MPa, the water flow velocity of copper crystallizer is 8m/sec, and water cooling pressure is greater than 0.8-1.0MPa.
Above-mentioned inside and outside crystallizer below is provided with the suspension sleeve, inside and outside sleeve distance steel ring wall is sewn between the 10mm-100mm, adopt steam, nitrogen or the cooling of other non-oxidized gas, the gas cooled flow velocity is at normal temperatures greater than 8m/sec, and water cooling pressure is greater than 0.8MPa.
Above-mentioned shake table adopts sinusoidal vibration or non-sinusoidal oscillation, and the shake table vibration frequency is 240-420 beats/min, and vibration amplitude is 2mm-10mm.
Outer crystallizer material adopts fine copper and is magnetic or nonmagnetic stainless steel or high rigidity, high-strength abrasion-proof steel are made.The crystallizer wall thickness is determined by the mechanical performance of crystallizer material.When electromagnetic agitation is arranged, adopt fine copper or nonmagnetic stainless steel to make crystallizer, when not having electromagnetic agitation, the available high-strength abrasion-proof steel plate that is magnetic is made crystallizer.When adopting fine copper to make crystallizer, adopt the circular seam type water-cooling system, circumferential weld is 2-8mm, and water velocity is controlled at 8-20m/s; When doing with stainless steel or other steel, the crystallizer wall thickness can reduce 40-60%, and the water-cooled flow control is at 12-24m/s.Can improve crystallizer with steel crystalliser (compares with copper pipe) more than one times service life.When adopting Cu crystallizer, outer length of mould is controlled at about 930mm, and when doing with steel, outer length of mould adopts unified tapering on the outer crystallizer between 930mm-1200mm, and different according to steel grade, tapering is selected in 2/1000ths---between 4/1000ths.
Hold problem tightly for solving the contraction of interior crystallizer in the molten steel solidification process, interior crystallizer adopts high strength, glass hard steel to make (can not consider whether to be magnetic and all not affect electromagnetic agitation), its wall thickness is between the 16-20mm, adopt the circular seam type water-cooling structure, circumferential weld is between the 2-8mm, water flow velocity is controlled between the 8-20m/s adjustable, and between the length of mould 1100-1200mm, crystallizer from top to bottom 400-600mm zero draft is vertically isometrical.Through behind the uiform section, crystallizer is the following part of 400-600mm from top to bottom, adopts 3/1000ths inside shrinkage type interior crystallizers.
Casting circle base inner circle is left interior crystallizer, naked leakage inner surface secondary cooling is cooled off with steam or nitrogen (or other cheap non-oxidized gas), in order to improve cooling effect, below interior crystallizer, hang a sleeve, sleeve outer diameter is less than circular diameter 10-100mm in the circle base, in casting cycle, introduce steam or the nitrogen of 0.8-1.2MPa by interior crystallizer inner circle top, refrigerating gas is flowed out through crack between inner sleeve and the strand inner circle.Because completely abolish the secondary cooling water, eliminated and to have caused the hidden danger of meeting the water blast by bleed-out.Can reduce simultaneously by two cold inequalities and cause crackle and secondary oxidation loss.
Pipe cylindrical secondary cool off available spray or water-cooled also outside the crystallizer below put that circumferential weld can be selected between the 10-100mm between outer sleeve, sleeve and the pipe, refrigerating gas can evenly spray among the circumferential weld by outer crystallizer endless belt, between the gas cooled pressure 0.8-2.5mpa, gas flow velocity between narrow circumferential weld can be controlled in greater than 8m/s.
About inside and outside sleeve length 7-8m, inner core can be grown.Inside and outside crystallizer is all used gas cooled, is conducive to improve slab quality, reduces the secondary oxidation loss, stops issuable security incident.
Shake table, inside and outside crystallizer are fixed on the vibration stand simultaneously, shake table can adopt between sinusoidal vibration or non-sinusoidal oscillation, the vibration frequency 240 times-420 times/minutes, between the amplitude control 2-10mm, often operate in about 5mm, vibrating motor or hydraulic cylinder power are optional bigger than normal, should take into full account interior crystallizer holds tightly in the situation, negative slip increases the impact of power consumption, if any electromagnetic agitation, electromagnetic mixing apparatus should separate with shake table, but secondary cooling zone inside and outside sleeve and crystallizer hold together, and increase vibrational loading.
By behind secondary cooling zone below the crystallizer, 4-6 passage three roller pinch rolls are set drag.When the major diameter pipe is cast, adopt three roller pinch rolls to drag favourable increase pinch roll and drag area, reduce the pinch roll diameter, effectively reduce weight of equipment.The operation of casting speed, throwing dummy bar in early stage is all by being arranged in the control of vertical casting machine frame top pinch roll, and pinch roll drawing direction and speed are adjustable by motor, and casting speed is controlled between 0.8m-2.5m/ divides.
The three-roller type clamping and conveying device respectively below crystallizer the 7m place begin to arrange, every decline 2m arranges one, 15m to 18m locates below crystallization place, begins to shear, and above shearing, arranges 4 to 5 three roller clamping and conveying devices.The blank that scale is cut off is steadily sent on the tumbler of bottom, tumbler has three simultaneous action three-roller type clamping and conveying devices, can make the blank of cutting off steadily deliver to horizontal roller to the warehouse for finished product cold bed, after also can receiving the dummy ingot rod from horizontal roller, tumble and vertically deliver to the crystallization below, the dummy ingot rod is long 12.5m approximately.Shear the self-designed mechanical double shear of available my company, shear also available bull flame annular cutting, shear requires with casting speed synchronous operation, guarantees that blank shears end at 60sec to 90sec in the time, and the scale blank is steadily delivered in the tumbler by the bottom pinch roll.
Its technological process is: on vertical casting machine, inject tundish through clean high-temperature molten steel by ladle, tundish is controlled the mouth of a river with stopper, on the annular circumferential cross section that the inside and outside crystallizer that injection is comprised of two concentric circles forms, through the secondary cooling, pinch roll drags, and then cuts into scale with annular shearing or flame, steadily the input tilting gear is delivered to cold bed and is advanced warehouse for finished product.
The invention has the advantages that:
Adopt the steel crystalliser to replace copper crystallizer, solved thoroughly that blank is held tightly and problem that can not slippage;
Owing to having adopted the crystallizer of steel, the crystallizer life-span significantly increased;
Secondary cooling zone adopts gas cooled, has thoroughly solved because the blast that bleed-out causes;
Adopt three roller pinch rolls, continuous casting billet is processed, thereby improved the institutional framework of steel billet, blank interior detail crystalline substance is increased, thereby improved the physical property of blank.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the present invention.
Fig. 2 is combination mould partial schematic diagram of the present invention.
Fig. 3 is A section enlarged drawing among Fig. 1.
The specific embodiment
A kind of steel pipe continuous casting equipment comprises tundish 1, stopper 2, shake table 3, combination mould, cooling device, shear 11, three roller clamping and conveying devices 4.Stopper 2 is installed in the tundish 1, and combination mould is made of interior crystallizer 5 and outer crystallizer 6.Inside and outside crystallizer 5,6 is fixed on the shake table support 7, is provided with middle water containing opening 8 on the tundish 1, and middle water containing opening 8 is connected with inside and outside crystallizer 5,6 composition closed loops, and cooling device is made of cooling device 13 and secondary cooling apparatus 12.Three roller clamping and conveying devices 4 are installed on the column, and are positioned at inside and outside crystallizer 5,7m place, 6 below.Shear 11 is arranged on inside and outside crystallizer 5,16m place, 6 below.Inside and outside crystallizer 5,6 is comprised of two different-diameter concentric circles, and the difference of two concentric circles diameters is two times of casting steel billet wall thickness, and inside and outside crystallizer is fixed on the shake table support 7 simultaneously by four single armeds that are mutually 90 °.Interior crystallizer 5 adopts the circular seam type water-cooling structure, and circumferential weld is selected between the 3mm, and the water cooling flow velocity is 15m/sec, and water cooling pressure is 1.4MPa.Outer crystallizer is made by clean steel chromium plating, and outer crystallizer 6 adopts the circular seam type water-cooling system, circumferential weld 4mm, and the water-cooled flow velocity of steel crystalliser is 14m/sec, water cooling pressure is 1.4MPa.Inside and outside crystallizer 5,6 belows are provided with sealed suspension inner and outer sleeves 9,10, and inner and outer sleeves 9,10 distance steel ring walls seam are 15mm, and the gas cooled flow velocity is 10m/sec at normal temperatures, and water cooling pressure is 1MPa.Shake table 3 adopts sinusoidal vibration or non-sinusoidal oscillation, and the vibration frequency of shake table 3 is 300 beats/mins, and vibration amplitude is 4mm.
Claims (5)
1. a steel pipe continuous casting equipment comprises tundish, stopper, shake table, fourplatemold, cooling device, shear, three roller clamping and conveying devices; Described stopper is installed in the tundish, described tundish is fixed on the platform, middle water containing opening is installed on the tundish, described fourplatemold is comprised of interior crystallizer and outer crystallizer, described middle water containing opening is connected with outer crystallizer with described interior crystallizer, and interior crystallizer and outer crystallizer are fixed on the vibration stand; Described cooling device is made of cooling device and secondary cooling apparatus; Described three roller clamping and conveying devices are installed on the column, and bottom is equipped with shear, it is characterized in that:
Interior crystallizer and outer crystallizer are comprised of two different-diameter concentric circles, the difference of two concentric circles diameters is two times of steel billet wall thickness to be cast, interior crystallizer and outer crystallizer are fixed on the vibration stand simultaneously by being mutually four single armeds of 90 ° or being mutually 120 ° of three single armeds, described three roller clamping and conveying devices are arranged on the 6-8m place, below of interior crystallizer and outer crystallizer, and described shear is arranged on interior crystallizer and 15-18m place, outer crystallizer below.
2. a kind of steel pipe continuous casting equipment according to claim 1, it is characterized in that described interior crystallizer adopts high strength, glass hard steel to make, its wall thickness is between the 16-20mm, adopt the circular seam type water-cooling structure, circumferential weld is between the 2-8mm, water flow velocity is controlled between the 8-20m/s adjustable, between the length of mould 1100-1200mm, crystallizer from top to bottom 400-600mm zero draft is vertically isometrical, through behind the uiform section, crystallizer is the following part of 400-600mm from top to bottom, adopts 3/1000ths inside shrinkage type interior crystallizers.
3. a kind of steel pipe continuous casting equipment according to claim 1, it is characterized in that described outer crystallizer is by clean steel chromium plating or nonmagnetic stainless steel or copper one-tenth, outer crystallizer adopts the circular seam type water-cooling system, circumferential weld 2-8mm, the water-cooled flow velocity of steel crystalliser is 8-20m/sec, water cooling pressure is greater than 1.2MPa, the water flow velocity of copper crystallizer is 8m/sec, and water cooling pressure is greater than 0.8-1.0MPa, when using Cu crystallizer, outer length of mould is controlled at 930mm, when doing with steel, outer length of mould adopts unified tapering on the outer crystallizer between 930mm-1200mm, different according to steel grade, tapering is selected in 2/1000ths---between 4/1000ths.
4. a kind of steel pipe continuous casting equipment according to claim 1 is characterized in that described interior crystallizer and outer crystallizer below are provided with the suspension sleeve, inside and outside sleeve distance steel ring wall is sewn between the 10mm-100mm, adopt the cooling of steam or non-oxidized gas, gas cooled pressure is greater than 0.8-2.5MPa.
5. a kind of steel pipe continuous casting equipment according to claim 1 is characterized in that described shake table adopts sinusoidal vibration or non-sinusoidal oscillation, and the shake table vibration frequency is 240-420 beats/min, and vibration amplitude is 2mm-10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910187302 CN102019391B (en) | 2009-09-09 | 2009-09-09 | Steel pipe continuous casting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910187302 CN102019391B (en) | 2009-09-09 | 2009-09-09 | Steel pipe continuous casting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102019391A CN102019391A (en) | 2011-04-20 |
| CN102019391B true CN102019391B (en) | 2013-03-27 |
Family
ID=43861403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910187302 Active CN102019391B (en) | 2009-09-09 | 2009-09-09 | Steel pipe continuous casting equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102019391B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102451894A (en) * | 2011-08-30 | 2012-05-16 | 苏州富瑞铜业有限公司 | Device and method for performing semicontinuous casting on hollow ingot |
| AT512681B1 (en) * | 2012-03-22 | 2016-08-15 | Primetals Technologies Austria GmbH | Apparatus and method for the continuous continuous casting of a large-sized steel strand |
| CN102699291B (en) * | 2012-06-01 | 2014-08-06 | 中国重型机械研究院有限公司 | Crystallizer device for continuously casting hollow tube blanks |
| CN109014100B (en) * | 2018-09-29 | 2020-03-31 | 东北大学 | Method for improving steel drawing speed in steel sheet billet continuous casting process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1718322A (en) * | 2005-06-01 | 2006-01-11 | 东北大学 | Electromagnetic continuous casting method of composite roller and its casting equipment |
| CN201470851U (en) * | 2009-09-09 | 2010-05-19 | 沈阳东方钢铁有限公司 | Continuous casting steel pipe equipment |
-
2009
- 2009-09-09 CN CN 200910187302 patent/CN102019391B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1718322A (en) * | 2005-06-01 | 2006-01-11 | 东北大学 | Electromagnetic continuous casting method of composite roller and its casting equipment |
| CN201470851U (en) * | 2009-09-09 | 2010-05-19 | 沈阳东方钢铁有限公司 | Continuous casting steel pipe equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102019391A (en) | 2011-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102303102B (en) | Continuous casting process and continuous casting machine for extra-thick plate blank | |
| CN102019391B (en) | Steel pipe continuous casting equipment | |
| CN202270944U (en) | Extra-thick slab casting machine | |
| CN203635889U (en) | Apparatus for continuous production of large-size high-quality aluminum alloy cast ingots | |
| CN208879655U (en) | A kind of continuous cast mold Yarn feeding device | |
| CN105234365A (en) | Casting method for heavy rail steel casting blank | |
| CN102672121B (en) | Production method for continuous casting of vertical tube blanks | |
| CN104722730A (en) | Device and method for continuous preparation of large-size high-quality aluminum alloy cast ingots | |
| CN102416449A (en) | Continuous steel pipe casting device | |
| Miyazawa | Continuous casting of steels in Japan | |
| CN102069163B (en) | Crystallizer, device and method for producing casting blank, casting blank and super-large-section casting blank | |
| CN201470851U (en) | Continuous casting steel pipe equipment | |
| CN101433948A (en) | Round billet continuous casting machine with especially big sectional plane | |
| CN201304475Y (en) | Continuous casting device for producing round billet with diameter being more than or equal to Phi 800 mm on straight-form conticaster | |
| CN202571226U (en) | Production mechanism for hollow billet continuous casting | |
| CN201082464Y (en) | Molten metal continuously casting device | |
| CN102527960A (en) | Novel crystallizer for horizontal continuous casting | |
| CN205147262U (en) | End argon blowing device of static ingot | |
| CN201353635Y (en) | Round billet conticaster with extra large section | |
| CN110666115A (en) | Crystallizer and vertical hollow round billet continuous casting machine | |
| CN103691902A (en) | Device and process for centrifugal continuous casting of metal | |
| CN110860664A (en) | Vertical hollow round billet continuous casting machine and billet discharging method | |
| CN201913204U (en) | Crystallizer, casting blank production device, casting blank and ultra-large-section casting blank | |
| CN104190890A (en) | Process and device for continuous casting of hollow billets | |
| CN205254067U (en) | Accuse temperature conticaster device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20131204 Granted publication date: 20130327 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20150604 Granted publication date: 20130327 |
|
| PP01 | Preservation of patent right |
Effective date of registration: 20150604 Granted publication date: 20130327 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20181204 Granted publication date: 20130327 |
|
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20181207 Granted publication date: 20130327 |
|
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20220607 Granted publication date: 20130327 |
|
| PD01 | Discharge of preservation of patent | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20220607 Granted publication date: 20130327 |
|
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20221207 Granted publication date: 20130327 |
|
| PD01 | Discharge of preservation of patent | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20221207 Granted publication date: 20130327 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20230607 Granted publication date: 20130327 |
|
| PD01 | Discharge of preservation of patent | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20230607 Granted publication date: 20130327 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20231207 Granted publication date: 20130327 |