CN106938325B - The pouring procedure of low overheat rare earth steel and Aluminum steel - Google Patents
The pouring procedure of low overheat rare earth steel and Aluminum steel Download PDFInfo
- Publication number
- CN106938325B CN106938325B CN201710134528.1A CN201710134528A CN106938325B CN 106938325 B CN106938325 B CN 106938325B CN 201710134528 A CN201710134528 A CN 201710134528A CN 106938325 B CN106938325 B CN 106938325B
- Authority
- CN
- China
- Prior art keywords
- steel
- rare earth
- pipe end
- filling pipe
- pouring procedure
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
It is that time one heat steel Metal in Tundish degree of superheat is each poured in continuous casting process is 15-25 DEG C, each pouring time non-one heat steel Metal in Tundish degree of superheat is 5-15 DEG C the present invention relates to the pouring procedure of a kind of low overheat rare earth steel and Aluminum steel；And the inner wall of molten steel and collector nozzle is not directly contacted with, filling pipe end bottom is equal with the inside radius of collector nozzle the top, and the angle that the lower half portion outer surface of filling pipe end and vertical direction are formed is α, and α ≠ 0.Pouring procedure provided by the invention realizes the cast cold technology of rare earth steel and Aluminum steel, and sequence casting may be implemented, and does not block the mouth of a river.In addition, realizing permanent pulling rate casting production, this is highly beneficial to the quality of steel, and also brings very big benefit to organization of production since rare earth steel and Aluminum steel do not block the mouth of a river.
Description
Technical field
The present invention relates to field of iron and steel smelting, in particular to the pouring procedure of a kind of low overheat rare earth steel and Aluminum steel.
Background technique
In the continuous casting process of metallurgical industry, realize that the low overheat technology of molten steel is highly beneficial to grid electricity fee cost is reduced, but
Since the degree of superheat of molten steel is low, nozzle blocking will lead to, therefore, continuous casting process is industrially generally required often to pour in time one heat steel
Between Baogang's water the degree of superheat >=25 DEG C (being poured smoothly to guarantee to open), often pour the degree of superheat >=15 of time non-one heat steel Metal in Tundish
℃。
Multiple studies have shown that: the raising of RE Elements on Steel material performance is advantageous.Rare earth can reduce the grain size of steel, mention
The toughness and low temperature impact properties of high steel improve the anti-lamellar tearing ability etc. in slab thickness direction.But it is dilute due to being limited by
Block continuous casting sprue in native steel production process and interfere steel-making this key problem of continuous production, the exploitation of rare earth steel and using by
Greatly limitation, is nearly at dead state at present.
Aluminum steel is also common steel grade, but since Aluminum steel is also easy blocking continuous casting sprue, influences the normal production of continuous casting,
Therefore it is forced to pour time production (the furnace number that company pours is few) using small, therefore increases the cost of steel-making.
Patent " the compound water mouth for casting rare-earth steel " (number of patent application applied according to Shanghai No.3 Iron &. Steel Plant Zhao Suochen et al.
For CN86200556U) introduction, which provides a kind of Compound Water that can prevent nozzle clogging for steel smelting
Mouthful, its main feature is that mouth of a river inner wall is equipped with > 95%SiO2Vitreous silica is the bushing pipe of material.In rare earth steel casting process, by
In the change of mouth of a river refractory material material, nozzle clogging physical property matter is changed, and improves re inclusion and mouth of a river inner wall
The interface energy of storeroom, so as to avoid the stagnant knot of re inclusion, it is therefore prevented that the generation of dross.
But due to the SiO in the above-mentioned mouth of a river2Be easy to be washed off by steel fall into molten steel formed field trash and it is not extensive
It uses.
Patent " the conticasting technology for feeding rare-earth wires into tundish " (number of patent application applied according to Institutes Of Technology Of Nanjing Zhang Xuesong et al.
01127004.7) to introduce, which is the method for avoiding rare earth steel water blocking mouthh from using tundish feeding rare-earth wires, but due to the party
Content of rare earth is uneven in the molten steel of method and influences the normal production of continuous casting without being widely adopted.
According to patent " continuous casting pouring basket rare earth adding technology " (patent application for appointing newly-built et al. application of Baotou Iron and Steel Company
Number for 200510053297.9) introduce, the patent also use tundish feeding rare earth technique, there is also content of rare earth for the patent
Non-uniform problem.
Patent " the anti-blocking immersion of special steel continuous casting applied according to Sinosteel Luoyang Institute of Refractories Liu Guoqi et al.
The mouth of a river " (number of patent application 200410060355.6) is introduced, which is made of the resistance to material of multilayer various material, but practical
The nozzle blocking problem containing rare earth steel and Aluminum steel is not can solve still in.
According to patent " a method of prevent continuous-casting of steel billet nozzle blocking " (patent of Northeastern University Yu Jingkun et al. application
Application No. is 201510110081.5) introducing, which is zero by mouth of a river outer surface and the earth or current potential using conductive material
Position connection, makes the current potential zero of mouth of a river inner surface, reduces or eliminates migration and adherency of the steel inclusion to mouth of a river inner surface,
Preventing nozzle blocking, " present invention is migrated from field trash to mouth of a river inner surface and the mechanism of adherency, fundamentally the company of solving
Cast the blockage problem at the mouth of a river.
But the patent does not have been widely adopted due to operating at the scene upper difficult.
According to the utility model patent for being permitted Rongchang County et al. application of Laiwu Iron Co., Ltd., " one kind prevents Al2O3 attached
The continuous casting tundish apparatus of mouth of a river wall " (number of patent application 200820016118.3) introduce, which thinks that " filling pipe end is first
Dross sequentially extends downwardly into collector nozzle ... ", therefore its groundwork is placed on: ' tundish apparatus is that stopper can rotate 0-
10 °, filling pipe end inner cavity is inverted tubaeform structure ' "；And require the inner wall roughness of filling pipe end inner cavity at 0-10 microns.
Firstly, the patent is utility model, it is desirable that protection is a kind of tundish apparatus, is not involved with collector nozzle, more
It is not directed to the improvement of continuous casting process；In addition, on nozzle blocking producing cause and caused by influence also to analyze it is not thorough.The patent
Think " filling pipe end elder generation dross sequentially extends downwardly into collector nozzle ... (in summary of the invention chapters and sections) ", therefore main attention is put
On continuous casting tundish apparatus and filling pipe end.
In fact, in the production accident that nozzle blocking occurs, the overwhelming majority is that collector nozzle blocks, the reason for this is that around collector nozzle
For air, even if environment temperature is also 35 DEG C or so, and the liquid steel temperature in the mouth of a river is about 1450-1550 DEG C, therefore in summer
When molten steel flows through collector nozzle, liquid steel temperature necessarily declines, and the Al in steel2O3、REAlO3The high-melting-points object such as (rare earth aluminate)
Matter is adhered to collector nozzle inner surface since temperature reduces, and with the progress of production, the more poly- these substances the more, eventually cause water
Mouth blocking.Such case is more obvious in winter.After collector nozzle blocking, if to change the mouth of a river, casting stream is first closed, then again will
The mouth of a river of preprepared baked (generally to toast 2 hours, and temperature reaches 1000 DEG C or more) is changed, then again
Open casting stream.Very big inconvenience is brought due to the uncertainty that the blocking mouth of a river occurs, thus to organization of production.Therefore replacement collector nozzle
It is influenced to production bring very big.And filling pipe end generally blocks several since in tundish, heat-retaining condition is good
Rate is very small.Therefore, the blocking for studying the mouth of a river should be then counter again to shift filling pipe end, and filling pipe end onto using collector nozzle as break-through point
Also different establish a capital is inverted tubaeform structure for inner cavity, and which increase the difficulty of mouth of a river production.
Therefore, for reduce molten steel the degree of superheat and prevent nozzle blocking, collector nozzle should be made not contact directly with molten steel first,
Then filling pipe end carries out corresponding change again.
In addition, that it is desirable to mouth of a river inner walls is more more smooth better, but it is limited by refractory nozzle itself and requires have certain gas
Cell size is difficult to realize in actual production to improve mouth of a river thermal shock resistance.
Summary of the invention
In view of this, the present invention provides the pouring procedure of a kind of low overheat rare earth steel and Aluminum steel.
The present invention provides the pouring procedure of a kind of low overheat rare earth steel and Aluminum steel, each pours in continuous casting process time
The one heat steel Metal in Tundish degree of superheat is 15-25 DEG C, and each pouring time non-one heat steel Metal in Tundish degree of superheat is 5-15 DEG C；
And the inner wall of molten steel and collector nozzle is not directly contacted with, filling pipe end bottom is equal with the inside radius of collector nozzle the top, filling pipe end
Lower half portion outer surface and the angle that is formed of vertical direction be α, and α ≠ 0.
Further, the value range of the α is 0~90 °, does not include 90 °.
Further, suitable for being poured steel in the steel grade and steel of content of rare earth 0~10%, aluminium contains the pouring procedure
The steel grade of amount 0~25%.
Further, the pouring procedure is suitable for pouring for small billet, bloom, round billet, Hot Metal in Beam Blank and slab section
Note.
Further, it specifically includes: the molten steel that the degree of superheat is 5~25 DEG C being poured since tundish, rare earth in steel
Content 0~10%, aluminium content 0~25% in steel；The angle that the lower half portion outer surface of steel filling pipe end is formed with vertical direction is
The inner wall of α, and α ≠ 0, molten steel and collector nozzle is not directly contacted with, and molten steel is not and in the inner wall and collector nozzle of filling pipe end lower half portion
Wall is directly contacted into continuous cast mold, and continuous casting even pours 20 furnaces with filling pipe end non-nodulating.
Pouring procedure provided by the invention realizes the cast cold technology of rare earth steel and Aluminum steel, and more furnaces may be implemented
Company pours, and does not block the mouth of a river.It averagely being reduced in terms of 5 DEG C by the ton steel degree of superheat, then the electricity charge of steel saving per ton are about 1.1 yuan/ton, 100
The electricity charge that ten thousand tons of steel are saved are 1,100,000 yuan, meet the requirement of national energy conservation and emission reduction.In addition, since rare earth steel and Aluminum steel do not block up
Fill in the mouth of a river, realize the casting production of permanent pulling rate, this is highly beneficial to the quality of steel, and organization of production is also brought it is very big good
Place.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described.
Fig. 1 is the structural representation of the continuous casting sprue and its attachment of cast cold rare earth steel and Aluminum steel in the embodiment of the present invention
Figure.
Description of symbols:
1- stopper 21- bakie working lining 22- tundish permanent layer 2- tundish
3- brick cup 4- filling pipe end 5- slide plate 6- collector nozzle 7- molten steel
Specific embodiment
The invention discloses the pouring procedure of a kind of low overheat rare earth steel and Aluminum steel, those skilled in the art can be borrowed
Reflect present disclosure, is suitably modified realization of process parameters.In particular, it should be pointed out that all similar substitutions and modifications are to this field
It is it will be apparent that they are considered as being included in the present invention for technical staff.Method and application of the invention has passed through
Preferred embodiment is described, related personnel obviously can not depart from the content of present invention, in spirit and scope to described herein
Methods and applications be modified or appropriate changes and combinations, carry out implementation and application the technology of the present invention.
The present invention provides the pouring procedure of a kind of low overheat rare earth steel and Aluminum steel, is: each pouring in continuous casting process
The secondary one heat steel Metal in Tundish degree of superheat is 15-25 DEG C, and each pouring time non-one heat steel Metal in Tundish degree of superheat is 5-15
℃；And the inner wall of molten steel and collector nozzle is not directly contacted with, filling pipe end bottom is equal with the inside radius of collector nozzle the top, upper water
Mouthful the angle that is formed of lower half portion outer surface and vertical direction be α, and α ≠ 0.
Referring to Figure 1, which is the structural representation of the continuous casting sprue and its attachment for cast cold rare earth steel and Aluminum steel
Figure, include: in above-mentioned attachment stopper 1, bakie working lining 21, tundish permanent layer 22, tundish 2, brick cup 3, filling pipe end 4,
Slide plate 5, collector nozzle 6 and molten steel 7.
4 lower end of filling pipe end is equal with the inside radius of 6 upper end of collector nozzle, and 7 collector nozzle of molten steel, 6 inner wall is not directly contacted with, upper water
The angle that mouthful 4 lower half portion outer surfaces and vertical direction are formed is α, and α ≠ 0.
Preferably, the value range of the α is 0~90 °, does not include 90 °.
Above-mentioned pouring procedure provided by the invention is suitable for being poured steel in the steel grade and steel of content of rare earth 0~10%
The steel grade of aluminium content 0~25%.The pouring procedure is suitable for pouring for small billet, bloom, round billet, Hot Metal in Beam Blank and slab section
Note.
Invention is directly contacted due to making molten steel not be particularly easy to reduced collector nozzle with temperature, and connects molten steel with filling pipe end
The area of touching minimizes, to realize the cast cold of rare earth steel and Aluminum steel, and continuous casting is even poured 20 furnaces and do not tied with filling pipe end
Tumor, improves that (mouth of a river does not block, and is advantageously implemented the permanent pulling rate of continuous casting, and permanent pulling rate is to mentioning to the steel of rare earth steel and Aluminum steel
The quality of high slab is very necessary), cost reduce and continuous production it is highly beneficial.
Specifically, above-mentioned pouring procedure includes the following steps:
The molten steel that the degree of superheat is 5~25 DEG C is poured since tundish, content of rare earth 0~10% in steel, aluminium contains in steel
Amount 0~25%；The angle that the lower half portion outer surface of steel filling pipe end and vertical direction are formed is α, and α ≠ 0, molten steel and collector nozzle
Inner wall be not directly contacted with, molten steel does not contact directly with the inner wall of filling pipe end lower half portion and collector nozzle inner wall into continuous casting crystallining
Device, continuous casting even pour 20 furnaces with filling pipe end non-nodulating.
Pouring procedure provided by the invention realizes the cast cold technology of rare earth steel and Aluminum steel, and more furnaces may be implemented
Company pours, and does not block the mouth of a river.It averagely being reduced in terms of 5 DEG C by the ton steel degree of superheat, then the electricity charge of steel saving per ton are about 1.1 yuan/ton, 100
The electricity charge that ten thousand tons of steel are saved are 1,100,000 yuan, meet the requirement of national energy conservation and emission reduction.In addition, since rare earth steel and Aluminum steel do not block up
Fill in the mouth of a river, realize the casting production of permanent pulling rate, this is highly beneficial to the quality of steel, and organization of production is also brought it is very big good
Place.
Below with reference to embodiment, the present invention is further explained:
Embodiment 1
(1) by the degree of superheat the be 5-13 DEG C ML08Al (non-one heat steel) of (degree of superheat average value is 9.3 DEG C), molten steel is therefrom
Between packet start to be poured；
(2) content of rare earth 0.1% in steel, aluminium content 0.05% in steel,
(3) angle that the lower half portion outer surface of filling pipe end and vertical direction are formed is 20 °.
(4) molten steel directly contacts not with the inner wall of filling pipe end lower half portion and collector nozzle inner wall enters continuous small-billet casting crystallization
Device.
(5) continuous casting even pours 28 furnaces with filling pipe end non-nodulating.
Embodiment 2
(1) by the degree of superheat the be 6-11 DEG C 50W600 (non-one heat steel) of (degree of superheat average value is 9.6 DEG C), molten steel is therefrom
Between packet start to be poured；
(2) content of rare earth 0.6% in steel, aluminium content 0.3% in steel,
(3) angle that the lower half portion outer surface of filling pipe end and vertical direction are formed is 25 °.
(4) molten steel directly contacts not with the inner wall of filling pipe end lower half portion and collector nozzle inner wall enters sheet billet continuous casting crystallization
Device.
(5) continuous casting even pours 22 furnaces with filling pipe end non-nodulating.
Embodiment 3
(1) by the degree of superheat the be 6-13 DEG C Q355NH (non-one heat steel) of (degree of superheat average value is 9.1 DEG C), molten steel is therefrom
Between packet start to be poured；
(2) content of rare earth 0.08% in steel, aluminium content 0.03% in steel,
(3) angle that the lower half portion outer surface of filling pipe end and vertical direction are formed is 25 °.
(4) molten steel directly contacts not with the inner wall of filling pipe end lower half portion and collector nozzle inner wall enters casting for shaped blank continuous crystallization
Device.
(5) continuous casting even pours 21 furnaces with filling pipe end non-nodulating.
Embodiment 4
(1) by the degree of superheat be 7-13 DEG C (degree of superheat average value is 9.4 DEG C) 20G (non-one heat steel) molten steel from centre
Packet starts to be poured；
(2) content of rare earth 0.12% in steel, aluminium content is 0% in steel,
(3) angle that the lower half portion outer surface of filling pipe end and vertical direction are formed is 30 °.
(4) molten steel directly contacts not with the inner wall of filling pipe end lower half portion and collector nozzle inner wall enters round billet continuous casting crystallization
Device.
(5) continuous casting even pours 25 furnaces with filling pipe end non-nodulating.
Embodiment 5
(1) by the degree of superheat be 6-12 DEG C (degree of superheat average value is 9.1 DEG C) U71Mn (non-one heat steel) molten steel from centre
Packet starts to be poured；
(2) content of rare earth 0.06% in steel, aluminium content is 0% in steel,
(3) angle that the lower half portion outer surface of filling pipe end and vertical direction are formed is 30 °.
(4) molten steel directly contacts not with the inner wall of filling pipe end lower half portion and collector nozzle inner wall enters bloom continuous casting crystallization
Device.
(5) continuous casting even pours 23 furnaces with filling pipe end non-nodulating.
Embodiment 6
(1) U71Mn (one heat steel) molten steel that the degree of superheat is 19 DEG C is poured since tundish；
(2) content of rare earth 0.06% in steel, aluminium content is 0% in steel,
(3) angle that the lower half portion outer surface of filling pipe end and vertical direction are formed is 30 °.
(4) molten steel directly contacts not with the inner wall of filling pipe end lower half portion and collector nozzle inner wall enters bloom continuous casting crystallization
Device.
(5) molten steel is smoothly opened and is poured, and subsequent molten steel is normally poured.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (5)
1. the pouring procedure of a kind of low overheat rare earth steel and Aluminum steel, which is characterized in that each pour secondary first in continuous casting process
The furnace steel Metal in Tundish degree of superheat is 15-25 DEG C, and each pouring time non-one heat steel Metal in Tundish degree of superheat is 5-15 DEG C；And steel
The inner wall of water and collector nozzle is not directly contacted with, and filling pipe end bottom is equal with the inside radius of collector nozzle the top, under filling pipe end
The angle that half part outer surface and vertical direction are formed is α, and α ≠ 0.
2. pouring procedure according to claim 1, which is characterized in that the value range of the α is 0~90 °, is not included
90°。
3. pouring procedure according to claim 1, which is characterized in that pouring procedure rare earth suitable for casting steel contains
The steel grade of aluminium content 0~25% in the steel grade and steel of amount 0~10%.
4. pouring procedure according to claim 1, which is characterized in that the pouring procedure be suitable for small billet, bloom,
The casting of round billet, Hot Metal in Beam Blank and slab section.
5. pouring procedure according to any one of claims 1 to 4, which is characterized in that it is specifically included: being by the degree of superheat
5~25 DEG C of molten steel is poured since tundish, content of rare earth 0~10% in steel, aluminium content 0~25% in steel；Steel filling pipe end
Lower half portion outer surface and the angle that is formed of vertical direction be α, the inner wall of and α ≠ 0, molten steel and collector nozzle is not directly contacted with,
Molten steel is not contacted directly with the inner wall of filling pipe end lower half portion and collector nozzle inner wall into continuous cast mold, and continuous casting even pours 20 furnaces or more
Mouth of a river non-nodulating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710134528.1A CN106938325B (en) | 2017-03-08 | 2017-03-08 | The pouring procedure of low overheat rare earth steel and Aluminum steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710134528.1A CN106938325B (en) | 2017-03-08 | 2017-03-08 | The pouring procedure of low overheat rare earth steel and Aluminum steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106938325A CN106938325A (en) | 2017-07-11 |
| CN106938325B true CN106938325B (en) | 2019-06-04 |
Family
ID=59469314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710134528.1A Active CN106938325B (en) | 2017-03-08 | 2017-03-08 | The pouring procedure of low overheat rare earth steel and Aluminum steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106938325B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108296463B (en) * | 2017-10-26 | 2021-01-01 | 新疆八一钢铁股份有限公司 | Method for controlling superheat degree of continuous casting tundish |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2366206Y (en) * | 1999-01-26 | 2000-03-01 | 修昌珉 | Sliding runner device for intermediate ladle |
| CN201136051Y (en) * | 2008-01-04 | 2008-10-22 | 莱芜钢铁股份有限公司 | Continuous casting tundish apparatus for preventing Al2O3 from adhering on downspout wall |
| CN201913239U (en) * | 2010-12-24 | 2011-08-03 | 莱芜钢铁股份有限公司 | Submersed nozzles with novel structures |
| CN203992363U (en) * | 2014-08-14 | 2014-12-10 | 沈阳金纳新材料股份有限公司 | Nickel and the closed middle water containing opening of nickel alloy vacuum melting horizontal continuous casting |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008126258A (en) * | 2006-11-20 | 2008-06-05 | Tokyo Yogyo Co Ltd | Casting nozzle for molten metal provided with heat insulation sleeve |
| JP2011110561A (en) * | 2009-11-25 | 2011-06-09 | Jfe Steel Corp | Method for continuously casting steel |
-
2017
- 2017-03-08 CN CN201710134528.1A patent/CN106938325B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2366206Y (en) * | 1999-01-26 | 2000-03-01 | 修昌珉 | Sliding runner device for intermediate ladle |
| CN201136051Y (en) * | 2008-01-04 | 2008-10-22 | 莱芜钢铁股份有限公司 | Continuous casting tundish apparatus for preventing Al2O3 from adhering on downspout wall |
| CN201913239U (en) * | 2010-12-24 | 2011-08-03 | 莱芜钢铁股份有限公司 | Submersed nozzles with novel structures |
| CN203992363U (en) * | 2014-08-14 | 2014-12-10 | 沈阳金纳新材料股份有限公司 | Nickel and the closed middle water containing opening of nickel alloy vacuum melting horizontal continuous casting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106938325A (en) | 2017-07-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104959585B (en) | A kind of billet caster tundish and its installation method | |
| CN108176844A (en) | A kind of device and method for clearing up tundish upper nozzle dross object | |
| CN203621414U (en) | Pouring cap for vacuum induction furnace | |
| CN109332625A (en) | A kind of casting method improving stopper rod flow control Al dexidized steel nozzle blocking | |
| CN106938325B (en) | The pouring procedure of low overheat rare earth steel and Aluminum steel | |
| CN103962517B (en) | A kind of apparatus for pouring of die casting electrode bar and pouring procedure thereof | |
| CN107350440A (en) | A kind of totally-enclosed iron-base magnetic amorphous band preparation system | |
| CN108637199A (en) | The method for pouring the first stove ladle molten steel temperature is unwrapped among a kind of reduction | |
| CN108796348A (en) | A kind of smelting process of high-carbon aluminum killed steel | |
| CN202427934U (en) | Tundish | |
| CN206677173U (en) | Rare earth steel and the mouth of a river used for aluminum-containing steel and middle steel ladle | |
| CN102179491A (en) | Argon-blowing prefabricated member for continuous casting tundish cover | |
| CN103157785A (en) | Construction method of ladle lining | |
| CN106367551A (en) | Main channel water-cooling device of blast furnace tapping channel and mounting and utilizing method | |
| CN202963436U (en) | Double-vacuum cast steel ingot middle ladle | |
| CN205183761U (en) | Ladle package end pouring structure | |
| CN108465804A (en) | A kind of ladle | |
| CN201172103Y (en) | Transfer chute for producing isothermal forging die | |
| CN203695934U (en) | Molten iron jar slag stopper with molten iron flowing opening | |
| CN204621065U (en) | A kind of clean type insulation ladle | |
| CN207057616U (en) | A kind of rare earth steel, Aluminum steel or the stainless steel tundish upper nozzle that prevents adhesion | |
| CN106424654A (en) | Liquid lifting pipe for heat-resistant alloy low-pressure casting and manufacturing die and method for same | |
| CN203508955U (en) | Composite casting type heat-resisting sliding block casting die | |
| CN102672153B (en) | Burner seal cover and application thereof | |
| CN206997757U (en) | A kind of Novel heat insulation interlayer bottom filling pouring molten steel bag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |