CN206296434U - One kind is used for slab CC tundish bar shaped air brick covering ar blowing refining device - Google Patents
One kind is used for slab CC tundish bar shaped air brick covering ar blowing refining device Download PDFInfo
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- CN206296434U CN206296434U CN201621359506.2U CN201621359506U CN206296434U CN 206296434 U CN206296434 U CN 206296434U CN 201621359506 U CN201621359506 U CN 201621359506U CN 206296434 U CN206296434 U CN 206296434U
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Abstract
The utility model is related to a kind of for slab CC tundish bar shaped air brick covering ar blowing refining device,Including turbulence inhibitor (1),Impregnating cover (2),Bar shaped air brick (3),Barricade (4),Inclined hole dam (5),Impregnating cover (2) is directly over bar shaped air brick (3),The lower end immersion continuous casting steel of impregnating cover (2) guarantees replacement in packet procedures tundish pouring molten steel minimum level (9) below,It uses Argon control system PLC to be collected by ethernet communication,Upload first pressure table (22a) pressure value,Metallurgical special mass flow controller (25) flow value,Second pressure table (22b) pressure value is to continuous casting basic automation systems database,And perform the argon flow amount of Argon control system PLC and automatically control instruction,According to the change of molten steel net weight in tundish,Adjust automatically argon flow amount,Realization is precisely controlled,Improve the effect of field trash in tundish removal molten steel.
Description
Technical field
The utility model is related to a kind of for slab CC tundish bar shaped air brick covering ar blowing refining device, category steel
Metallurgical continuous casting Tundish Technology field.
Background technology
Existing continuous casting production air curtain barricade wall technology, can remove field trash in molten steel to a certain extent, play cleaning molten steel
Purpose, but still there is following technological deficiency：The air-blowing quantity of air brick is limited, can not blow the top of the slag open, the big easily steel of air-blowing quantity
The top of the slag blows open and causes molten steel slag and secondary oxidation of steel, and the Argon Bubble that air curtain barricade wall is formed captures the ability of simultaneously removal of inclusions
It is limited, it is impossible to meet control requirement of high-purity clean steel to field trash.
CN103862014A (application numbers：201410114064.4) with CN203804183U (application numbers
201420137789.0) a kind of purifier and method of refining for removing molten steel inclusion in continuous casting production is disclosed,
Including turbulence inhibitor, impregnating cover, bar shaped air brick, the two side ends of the impregnating cover are fixed in tundish containment wall permanent liner,
In molten steel in the lower end immersion tundish of impregnating cover below Slag Layer, impregnating cover is located at directly over bar shaped air brick and and bar shaped
Air brick is relative, and the gas passage for extending transversely through, the two ends of gas passage and tundish cover are provided with dipping cover body
And the space in tundish between Slag Layer is connected, the steam vent that setting is connected with gas passage on dipping cover body,
Described steam vent is relative with bar shaped air brick, and bar shaped air brick is blown into big flow argon gas, bar shaped air brick and impregnating cover it
Between form the big air curtain barrier of continuous closeness, by Slag Layer Adsorption, then argon gas stream is logical by gas for capture field trash
Space of the road in tundish between Slag Layer and tundish cover forms argon gas-sealed, and the secondary of molten steel is reduced in protection slag face
Oxidation, substantially increases the cleanliness factor of molten steel so that 0.5 grade of four type impurity reaches more than 90% in LHG2 steel.
CN103862013B (application numbers：201410113939.9) with CN203725726U (application numbers
201420137790.3) a kind of impregnating cover for continuous casting production and preparation method thereof, including outer arc plate, inner arc plate are disclosed
And impregnating cover, circulation seam, circulation seam and Slag Layer in tundish cover and tundish are provided between outer arc plate and inner arc plate
Between space connection, the steam vent of impregnating cover is provided through on impregnating cover, be provided with inner arc plate and steam vent phase
To through hole, steam vent stitched by through hole and circulation and connected, and bar shaped air brick is blown into argon gas, bar shaped air brick and impregnating cover it
Between form the big air curtain barrier of continuous closeness, capture field trash, by Slag Layer Adsorption, argon gas is broken through below impregnating cover
Slag Layer continues up, is stitched into circulation through steam vent, through hole, and argon gas enters above tundish Slag Layer through circulation seam, in
Between in bag space between Slag Layer and tundish cover form argon gas-sealed, the secondary oxidation of molten steel is reduced in protection slag face,
Application of the invention so that 0.5 grade of four type impurity reaches more than 90% in LHG2 steel, substantially increases the cleanliness factor of molten steel.
But the invention has the following disadvantages：1) impregnating cover complex structure, manufacturing expense is high, thereby increases continuous casting cost；(2) soak
Stain cover is the casting material prefabricated part of corundum-spinel, is acid refractory, is easily reacted with basic slag in tundish, does not resist and invades
Erosion, and pollution molten steel.
Above patented technology makes to form continuous closely bubble column between bar shaped air brick and impregnating cover, improves Argon Bubble
The ability of simultaneously removal of inclusions is captured, but is had the following disadvantages in production practices：1) bar shaped air brick does not have and barricade, dam
It is applied in combination so that the inclusion floating deficiency of time in tundish in molten steel, have impact on inclusion removal rate；2) impregnating cover
Complex structure, manufacturing expense is high, thereby increases continuous casting cost；3) depth is small in the lower end immersion molten steel of impregnating cover, easily
Slag problem in generation impregnating cover；4) bar shaped air brick argon blowing rate manually adjusts control, not according to pouring basket liquid level (in
Between molten steel net weight in bag) change adjust argon flow amount size in time, cause to be opened in ladle that the tundish such as to pour, change bag, stopping pouring low
Trigger the technical barrier of molten steel slag under the conditions of liquid level, because of argon blowing rate adjustment not in time.
The content of the invention
In view of the shortcomings of the prior art, the utility model provides a kind of for slab CC tundish bar shaped air brick covering
Be beneficial to for bar shaped air brick, impregnating cover, barricade, inclined hole dam optimum organization technology arrangement by ar blowing refining device, the utility model
The molten steel laminar surface flow in tundish is formed, increases the residence time of molten steel, reduce dead band ratio, and argon flow amount is according to centre
The change adjust automatically of molten steel net weight in bag, improves the effect of Argon Bubble capture and removal of inclusions in whole casting process,
Field trash weight Comparison study example on year-on-year basis is electrolysed using the continuous casting billet sample of the utility model cast production Q690D
CN103862014A (application numbers：201410114064.4) the electrolysis field trash weight in the continuous casting billet of production reduces 30% on year-on-year basis
More than, while impregnating cover is designed using circular arc single layer structure, simple structure significantly reduces production cost.
The technical solution of the utility model is as follows：
One kind is used for slab CC tundish bar shaped air brick covering ar blowing refining device, including turbulence inhibitor (1), leaching
Stain cover (2), bar shaped air brick (3), barricade (4), inclined hole dam (5), it is characterised in that turbulence inhibitor is noted installed in tundish
The inner side of impact zone containment wall working lining is flowed, its longitudinal centre line overlaps with the center line of big bag long nozzle (12), bar shaped air brick
(3) bottom with inclined hole dam (5) is all fixed on tundish bag bottom permanent liner (7), and is partly embedded into tundish bag basic skill or training work
In lining (6), impregnating cover (2) is positioned at bar shaped air brick (3) surface and, the longitudinal direction of impregnating cover (2) relative with bar shaped air brick (3)
Center line overlaps with the longitudinal centre line of bar shaped air brick (3), and the two side ends of impregnating cover (2) and barricade (4) are all fixed on centre
In bag containment wall permanent liner.
Preferably, impregnating cover (2) is circular arc single layer structure, and the lower end immersion continuous casting steel of impregnating cover (2) is guaranteed replacement packet procedures
Below, the upper end of impregnating cover (2) is located at tundish cover (13) with steel in tundish to pouring molten steel minimum level (9) in tundish
Water is normally poured into a mould in the space between liquid level (8), inclined hole dam (5) positioned at the summit (A) at tundish bag bottom permanent liner turning, tiltedly
Inclined hole angle of inclination beta in hole dam (5) is 30 °~35 °, inclined hole lower edge to tundish underwrite lining work (6) working face it is vertical away from
Be 25~32mm from x, barricade (4) between turbulence inhibitor (1) and inclined hole dam (5), barricade (4) and inclined hole dam (5)
Horizontal range a be 250~302mm, center of the bar shaped air brick (3) between barricade (4) and turbulent flow suppressor (1),
I.e. bar shaped air brick (3) center line to barricade (4) apart from b with bar shaped air brick (3) to turbulent flow suppressor (1) apart from c phases
Deng.
A points are the summit at tundish bag bottom permanent liner (7) turning, inclined hole and centre of the inclined hole angle of inclination beta for inclined hole dam (5)
The angle that bag horizontal plane is formed.
The utility model is preferred, and the inner arc radius r of impregnating cover (2) arc structure is 250~300mm, circular arc
Action i be 150~202mm, thickness f be 120~152mm.
The utility model is preferred, and molten steel normally pours into a mould liquid level (8) below in the lower end immersion tundish of impregnating cover (2)
Depth v is 100~152mm.
The utility model is preferred, the upper end of impregnating cover (2) to tundish cover (13) lower end apart from j for 50~
101mm。
The utility model is preferred, and the circular arc top of impregnating cover (2) is uniformly distributed 5~7 steam vents (14), steam vent
(14) diameter D is 10~21mm.
The utility model is preferred, and the top of described bar shaped air brick (3) is higher by the height that tundish underwrites lining work (6)
Degree y is 10~21mm, and the sidepiece that tundish underwrites lining work (6) is higher by bar shaped air brick (3), is smeared using coating (11)
Streamlining.
The utility model is preferred, described bar shaped air brick (3), including bar shaped air brick matrix (15), air chamber (16),
Air chamber (16) is provided with air inlet pipe (19), air brick matrix (15), the inlet end of air chamber is connected and seals with air inlet pipe (19),
One end of air inlet pipe (19) connects with air chamber, and the other end stretches out air brick matrix, connects source of the gas.Preferably, the bar shaped is breathed freely
Brick (3) also includes embedded sleeve pipe (17), and embedded sleeve pipe (17) is arranged on the inlet end of air chamber, for installing, fixes air inlet pipe
(19).It is furthermore preferred that being sealed with clay (15) around embedded sleeve pipe (17).
The utility model is it is further preferred that described bar shaped air brick (3), its height n is 95~115mm, and width m is
120~131mm, air chamber (16) is cylindrical cavity, and diameter of a circle ￠ is 30~41mm, and the height w of air chamber (16) center line is
40~51mm, air chamber (16) is 90~101mm apart from e with the cecum of bar shaped air brick matrix (15), the length of embedded sleeve pipe (17)
Degree z is 90~102mm, and the thickness p of clay (18) is 10~16mm.
The utility model is preferred, the inner chamber of the turbulent flow suppressor (1) in cylinder, inner chamber diameter of a circle d is 400~
451mm, the height h of inner chamber circle is 350~402mm.
Impregnating cover (2) of the present utility model is circular arc single layer structure, and circular arc top is uniformly distributed 3~10 steam vents
(14), the lower end immersion continuous casting steel of impregnating cover (2) is guaranteed replacement in packet procedures tundish, and pouring molten steel minimum level (9) is such as the following to be set
Meter, is that, based on task of the present utility model, impregnating cover (2) disclosure satisfy that use requirement, ties using the design of circular arc single layer structure
Structure is simple, enormously simplify production technology, significantly reduces production cost, and the impregnating cover manufactured using the utility model compares background
Technology Patent CN103862013B (application numbers：201410113939.9) production impregnating cover cost reduce on year-on-year basis 95% with
On；The lower end immersion continuous casting steel of impregnating cover (2) guarantees replacement in packet procedures tundish pouring molten steel minimum level (9) below so that leaching
The lower end of stain cover (2) is immersed in tundish in molten steel all the time in normal casting process, solves and is guaranteed replacement packet procedures in continuous casting steel
In, the slag that pouring molten steel liquid level drops in initiation pouring basket liquid level below impregnating cover lower end in tundish enters into impregnating cover
Technical barrier that is interior and then causing molten steel slag.
The utility model is in slab CC tundish by bar shaped air brick (3), impregnating cover (2), barricade (4), inclined hole gear
Dam (5) Combinatorial Optimization technology arrangement, and inclined hole dam (5) is positioned at the summit (A) at tundish bag bottom permanent liner turning, inclined hole dam
(5) the inclined hole angle of inclination beta on is 30 °~35 °, and the vertical range x that inclined hole lower edge to tundish underwrites lining work (6) working face is 25
~32mm, barricade (4) between turbulence inhibitor (1) and inclined hole dam (5), the level of barricade (4) and inclined hole dam (5) away from
It is 250~302mm from a, center of the bar shaped air brick (3) between barricade (4) and turbulent flow suppressor (1) etc. is designed, and is
Those skilled in the art gropes what is obtained by substantial amounts of hydraulic model trial and numerical simulation study and production practices, hydraulic model trial and number
Mould result of study shows that the utility model is conducive to shape for slab CC tundish bar shaped air brick covering ar blowing refining device
Into the molten steel laminar surface flow in tundish, increase the residence time of molten steel, reduce dead band ratio, beneficial to inclusion floating removal,
By purifier of the present utility model according to background technology CN103862014A (application numbers：201410114064.4) according to 1:
2 modelings carry out hydraulic model trial, under the conditions of air-blowing quantity is 8L/min, the mean residence time of measure background technology on year-on-year basis
CN103862014A (application numbers：201410114064.4) increase by more than 15%, dead band ratio background technology on year-on-year basis
CN103862014A (application numbers：201410114064.4) more than 50% is reduced, using the utility model cast production Q690D's
Continuous casting billet sample is electrolysed field trash weight Comparison study example CN103862014A (application numbers on year-on-year basis：201410114064.4) produce
Continuous casting billet in electrolysis field trash weight reduce more than 30% on year-on-year basis, achieve beneficial effect.
Described air brick matrix (15), the magnesia bar shaped air brick of diffusion-type produced using mechanical pressing technology, is passed through
The effect of appropriate grain composition and additive, forms more open pore after being burnt till by high temperature, so as to form disperse
The breathable manner of type, its main physical and chemical index：MgO (%) >=90, Al2O3(%)≤3, bulk density (g/cm3)≤2.85, show
The porosity (%) >=20, cold crushing strength (MPa) >=15, strength at normal temperature (MPa) >=5.
Described turbulent flow suppressor (1), impregnating cover (2), barricade (4), inclined hole dam (5), using existing magnesia cast
Material moulding by casting, and formed in 400~450 DEG C of middle temperature firings, the wherein height k of inclined hole dam (5) is 330~420mm, thickness
U is 150~180mm, and the radius R of inclined hole is 39~45mm, and the height H of barricade (4) is 850~900mm, thickness L is 100~
150mm。
Described magnesia coating, high alumina castable are convenient source, commercial products.
The utility model also provides the argon gas control system and its control method for continuous casting production ar blowing refining device,
Argon gas control system includes argon gas pipe-line system and electric control system.
The argon gas pipe-line system, is divided into master and blows branch road and manual bypass, wherein master blows branch road includes be sequentially connected the
One ball valve (20a), pneumatic filter (21), first pressure table (22a), the second ball valve (20b), pressure transmitter (23), electromagnetism
Valve (24), metallurgical special mass flow controller (25), pressure-reducing valve (26), second pressure table (22b), the 3rd ball valve (20c), hand
Dynamic bypass includes the 4th ball valve (20d), the manual modulation valve (27) that are sequentially connected, and manual bypass is connected to dynamic bypass first pressure
Between table (22a) and second pressure table (22b), with the second ball valve (20b), pressure transmitter (23), the magnetic valve that master blows branch road
(24), metallurgical special mass flow controller (25), pressure-reducing valve (26) are in parallel；For master blow branch road break down after, manually behaviour
Apply, as shown in figure 11, argon gas pipe-line system is positioned in switch board pipeline parts annexation, it is characterised in that argon gas
Pressure transmitter (23), pressure-reducing valve (26) in pipe-line system, with mechanical and electronic type dual-pressure automatic compensation function,
Inlet pressure arbitrarily fluctuates, outlet pressure self adaptation, not by back pressure disturbing influence.
The electric control system, including Argon control system PLC, touch-screen, host computer operating system, networking exchange
Machine, continuous casting basic automation systems, each system are connected by ethernet communication with network switch, molten steel weighing system in tundish
System collects, send in tundish Metal Weight to continuous casting basic automation systems, as shown in figure 12.
The Argon control system PLC is collected by ethernet communication, uploads first pressure table (22a) pressure value, metallurgy
Special mass flow controller (25) flow value, second pressure table (22b) pressure value to continuous casting basic automation systems database,
And perform the argon flow amount of Argon control system PLC and automatically control instruction, it is automatic to adjust according to the change of molten steel net weight in tundish
Whole argon flow amount, realization is precisely controlled to argon blowing rate.
The argon gas pipeline system element, is market purchasing, wherein the ball valve (including the first ball valve 20a, the second ball
Valve 20b, the 3rd ball valve 20c, the 4th ball valve 20d) model specification be 304SS-1/2, the model specification of pneumatic filter (21)
It is BK110-3, the model specification of pressure gauge (including first pressure table 22a, first pressure table 22b) is YT40, pressure transmitter
(23) model specification is 8323-25-G1/2, and the model specification of magnetic valve (24) is 5281-1/2-NBR, metallurgical special quality
The model specification of flow controller (25) is Flox (on) s, and range is 0-200NL/min, and the model specification of pressure-reducing valve (26) is
BK100-2, the model specification of manual modulation valve (27) is 28-1/2-MS.
The electric control system element, is market purchasing, wherein the model specification of the PLC control system is west gate
Sub- S7 series, the model specification of PLC analog modules is 4AI/2AO, and the model specification of touch-screen is 7 cun of touch-screens of Siemens,
The model specification of host computer operating system is D610, upper computer software WIN CC more than 6.0.
The beneficial effects of the utility model：
1) the utility model in slab CC tundish by bar shaped air brick (3), impregnating cover (2), barricade (4), inclined hole
Dam (5) Combinatorial Optimization technology arrangement, and inclined hole dam (5) is positioned at the summit (A) at tundish bag bottom permanent liner turning, inclined hole gear
It is 30 °~35 ° that dam (5) sets inclined hole angle of inclination beta, and barricade (4) is 250~302mm, bar shaped with the horizontal range a of inclined hole dam (5)
The center of air brick (3) between barricade (4) and turbulent flow suppressor (1) etc. is designed, and optimizes molten steel flow field in tundish,
Beneficial to the molten steel laminar surface flow formed in tundish, increase the residence time of molten steel, reduce dead band ratio, improve Argon Bubble and catch
Obtain and removal of inclusions effect, by purifier of the present utility model according to background technology CN103862014A (application numbers：
201410114064.4) according to 1:2 modelings carry out hydraulic model trial, under the conditions of air-blowing quantity is 8L/min, during the average stop of measure
Between background technology CN103862014A (application numbers on year-on-year basis：201410114064.4) more than 15% is increased, dead band ratio is carried on the back on year-on-year basis
Scape technology CN103862014A (application numbers：201410114064.4) more than 50% is reduced, is poured into a mould using the utility model and produced
The continuous casting billet sample of Q690D is electrolysed field trash weight Comparison study example CN103862014A (application numbers on year-on-year basis：
201410114064.4) the electrolysis field trash weight in the continuous casting billet of production reduces more than 30% on year-on-year basis, achieves beneficial effect；
2) impregnating cover (2) of the present utility model is designed using circular arc single layer structure, and simple structure enormously simplify production
Technique, significantly reduces production cost, using the impregnating cover of the utility model manufacture than background technology Patent
CN103862013B (application numbers：201410113939.9) the impregnating cover cost of production reduces by more than 90%, and impregnating cover on year-on-year basis
(2) circular arc top is uniformly distributed 5~7 steam vents (14), the argon gas of bar shaped air brick (3) blowout, through tundish in steel
Continue up after liquid, flow through steam vent, the space in tundish between Slag Layer and tundish cover forms argon gas-sealed, by
This reduces the secondary oxidation of liquid steel level in tundish, and realizes that the secondary circulation of argon gas is utilized.
3) the utility model is used for the argon gas control system of continuous casting production ar blowing refining device, in basket pouring process
In, according to the change of molten steel net weight in tundish, adjust automatically argon flow amount is realized being precisely controlled, and solves ladle and changes bag etc.
Under the conditions of the low liquid level of tundish, because argon blowing rate adjustment not in time, blow break face initiation molten steel slag the problems such as, improve whole
The Stability and dependability of continuous casting production removal of inclusions effect in individual casting process, solves the Technique Popularizing application again
One technical barrier.
Brief description of the drawings
Fig. 1 is the technology arrangement that the utility model is used for slab CC tundish bar shaped air brick covering ar blowing refining device
Schematic diagram；
Fig. 2 is the B-B sectional views of Fig. 1；
Fig. 3 is the structural front view of impregnating cover in the utility model embodiment；
Fig. 4 is the C-C sectional views of Fig. 3；
Fig. 5 is the structural front view of bar shaped air brick in the utility model embodiment；
The structure left view of bar shaped air brick in Fig. 6 the utility model embodiments；
Fig. 7 is the structural front view of inclined hole dam in the utility model embodiment；
The structure left view of inclined hole dam in Fig. 8 the utility model embodiments；
Fig. 9 is the structural front view of barricade in the utility model embodiment；
The structure left view of barricade in Figure 10 the utility model embodiments；
Figure 11 is argon gas pipeline system schematic in the utility model embodiment；
Schematic diagram is electrically connected in Figure 12 the utility model embodiments；
In figure, 1. turbulence inhibitor；2. impregnating cover；3. bar shaped air brick；4. barricade；5. inclined hole dam；6. job contract in the middle of
Serve as a contrast；7. tundish permanent liner；8. molten steel normally pours into a mould liquid level in tundish；9. continuous casting steel is guaranteed replacement molten steel in packet procedures tundish
Cast minimum level；10. filling pipe end；11. coatings；12. big bag long nozzles；13. tundish covers；The ventilation of 14. impregnating covers
Hole；15. bar shaped air brick matrixes；16. air chambers；17. insertion sleeve pipes；18. lute ins；19. air inlet pipe；20. ball valves (including the
One ball valve 20a, the second ball valve 20b, the 3rd ball valve 20c, the 4th ball valve 20d)；21. pneumatic filters；22. pressure gauges (including the
One pressure gauge 22a, first pressure table 22b)；23. pressure transmitters；24. magnetic valves；25. metallurgical special mass flow controllers；
26. pressure-reducing valves；27. manual modulation valves；28. inclined hole dam bodies；29. inclined holes；30. suspension hooks；A points are tundish bag bottom permanent liner
The summit at turning, the angle that inclined hole angle of inclination beta is formed for the inclined hole of inclined hole dam with tundish horizontal plane.
Specific embodiment
With reference to specific embodiment, the utility model is described in further detail, but not limited to this.
Embodiment 1：
One kind be used for slab CC tundish bar shaped air brick covering ar blowing refining device, structure as shown in Fig. 1-Figure 10,
Including turbulence inhibitor 1, impregnating cover 2, bar shaped air brick 3, barricade 4, inclined hole dam 5, turbulence inhibitor is noted installed in tundish
Flow the inner side of impact zone containment wall working lining, its longitudinal centre line overlaps with the center line of big bag long nozzle 12, bar shaped air brick 3 and
The bottom of inclined hole dam 5 is all fixed in tundish bag bottom permanent liner 7, and is partly embedded into tundish and underwrites lining work in 6, impregnates
Cover 2 is located at directly over bar shaped air brick 3 and relative with bar shaped air brick 3, longitudinal centre line and the bar shaped air brick 3 of impregnating cover 2
Longitudinal centre line overlap, the two side ends of impregnating cover 2 and barricade 4 are all fixed in tundish containment wall permanent liner, it is characterised in that
Impregnating cover 2 is circular arc single layer structure, and the lower end immersion continuous casting steel of impregnating cover 2 pouring molten steel in packet procedures tundish of guaranteeing replacement is minimum
Below liquid level 9, the upper end of impregnating cover 2 is located at the space that molten steel is normally poured into a mould between liquid level 8 in tundish cover 13 and tundish
Interior, inclined hole dam 5 is located at the summit A at tundish bag bottom permanent liner turning, and the inclined hole angle of inclination beta in inclined hole dam 5 is 30 °, inclined hole
The vertical range x that lower edge underwrites lining work 6 working faces to tundish is 25mm, and barricade 4 is located at turbulence inhibitor 1 and inclined hole dam
Between 5, the horizontal range a of barricade 4 and inclined hole dam 5 is 300mm, bar shaped air brick 3 be located at barricade 4 and turbulent flow suppressor 1 it
Between center, i.e., the center line of bar shaped air brick 3 to barricade 4 apart from b and bar shaped air brick 3 to turbulent flow suppressor 1 apart from c
It is equal.
The A points are the summit at the turning of tundish bag bottom permanent liner 7, inclined hole and centre of the inclined hole angle of inclination beta for inclined hole dam 5
The angle that bag horizontal plane is formed.
The inner arc radius r of the arc structure of the impregnating cover 2 is 300mm, and the action i of circular arc is 171mm, and thickness f is
120mm。
Molten steel normally pours into a mould depth v of the liquid level below 8 for 150mm in the lower end immersion tundish of the impregnating cover 2.
The upper end of the impregnating cover 2 is 50mm apart from j to the lower end of tundish cover 13.
The circular arc top of the impregnating cover 2 is uniformly distributed 5 steam vents 14, and the diameter D of steam vent is 20mm.
The top of described bar shaped air brick 3 is higher by tundish and underwrites lining work 6 height y for 20mm, ventilative in bar shaped
Brick 3 is higher by the sidepiece that tundish underwrites lining work 6, and streamlining is smeared using coating 11.
Described bar shaped air brick 3, including bar shaped air brick matrix 15, air chamber 16, air inlet pipe 19, in air brick matrix 15
Air chamber 16 is provided with, the inlet end of air chamber is connected and seals with air inlet pipe 19, and one end of air inlet pipe 19 connects with air chamber, the other end
Air brick matrix is stretched out, source of the gas is connected.The bar shaped air brick 3 also includes embedded sleeve pipe 17, and embedded sleeve pipe 17 is arranged on air chamber
Inlet end, for installing, fixed air inlet pipe 19.The embedded surrounding clay 15 of sleeve pipe 17 is sealed.
Described bar shaped air brick 3, its height n is 95mm, and width m is 120mm, and air chamber 13 is cylindrical cavity, circle
Diameter ￠ is 30mm, and the height w of the center line of air chamber 3 is 40mm, and air chamber 3 is apart from e with the cecum of bar shaped air brick matrix 12
90mm, the length z of embedded sleeve pipe 14 is 100mm, and the thickness p of clay 15 is 10mm.
The inner chamber of the turbulent flow suppressor 1 is 400mm in cylinder, inner chamber diameter of a circle d, and the height h of inner chamber circle is
350mm。
Described air brick matrix 15, the magnesia bar shaped air brick of diffusion-type produced using mechanical pressing technology, by suitable
When grain composition and additive effect, more open pore is formed after being burnt till by high temperature, so as to form diffusion-type
Breathable manner, its main physical and chemical index：MgO (%) >=90, Al2O3(%)≤3, bulk density (g/cm3)≤2.85, show gas
Porosity (%) >=20, cold crushing strength (MPa) >=15, strength at normal temperature (MPa) >=5.
Described turbulent flow suppressor 1, impregnating cover 2, barricade 4, inclined hole dam 5, is poured into using existing castable
Type, and formed in 400~450 DEG C of middle temperature firings, the wherein height k of inclined hole dam 5 is 330mm, and thickness u is 180mm, inclined hole
Radius R is 39mm, and the height H of barricade 4 is 850mm, and thickness L is 150mm.
Described magnesia coating, high alumina castable are convenient source, commercial products.
The utility model also provides the argon gas control system and its control method for continuous casting production ar blowing refining device,
Argon gas control system includes argon gas pipe-line system and electric control system.
The argon gas pipe-line system, be divided into master blow branch road and manual bypass, wherein master blow branch road including the first ball valve 20a,
Pneumatic filter 21, first pressure table 22a, the second ball valve 20b, pressure transmitter 23, magnetic valve 24, metallurgical special mass flow
Controller 25, pressure-reducing valve 26, second pressure table 22b, the 3rd ball valve 20c, manual bypass include the 4th ball valve 20d, manually regulation
Valve 27, manual bypass is connected between dynamic bypass first pressure table (22a) and second pressure table (22b), and the of branch road is blown with leading
Two ball valves (20b), pressure transmitter (23), magnetic valve (24), metallurgical special mass flow controller (25), pressure-reducing valve (26) and
Connection；For master blow branch road break down after, manually operated application, pipeline parts annexation as shown in figure 11, argon gas pipeline system
System is positioned in switch board, it is characterised in that pressure transmitter 23, pressure-reducing valve 26 in argon gas pipe-line system, with mechanical
With electronic type dual-pressure automatic compensation function, inlet pressure arbitrarily fluctuates, outlet pressure self adaptation, is not disturbed shadow by back pressure
Ring.
The electric control system, including Argon control system PLC, touch-screen, host computer operating system, networking exchange
Machine, continuous casting basic automation systems, each system are connected by ethernet communication with network switch, molten steel weighing system in tundish
System collects, send in tundish Metal Weight to continuous casting basic automation systems, as shown in figure 12.
The Argon control system PLC is collected by ethernet communication, uploads first pressure table 22a pressure values, metallurgy specially
Performed to continuous casting basic automation systems database with the flow value of mass flow controller 25, second pressure table 22b pressure values
The argon flow amount of Argon control system PLC automatically controls instruction, according to the change of molten steel net weight in tundish, adjust automatically argon gas
Flow, realization is precisely controlled to argon blowing rate.
It is as follows that the argon flow amount of the Argon control system PLC automatically controls instruction：
1) from unwrapping greatly before pouring to tundish the normal cast liquid level 8 that molten steel net weight is 30 tons, i.e. in 0 ＜ tundish
30 tons of molten steel net weight ＜, it is big unwrap pour while, open argon gas, the argon flow amount of bar shaped air brick 3 is controlled in 10NL/min；
2) after molten steel reaches the normal cast liquid level 8 that molten steel net weight is 30 tons in tundish, i.e., molten steel is net in tundish
Weight >=30 ton, the argon flow amount of bar shaped air brick 3 increases to 30NL/min；
3) big bag is changed, and molten steel net weight is that 30 tons of normal cast liquid level 7 is reduced to molten steel in tundish from tundish
Net weight is 30 tons of molten steel net weight ＜, the argon flow amount of bar shaped air brick 3 in i.e. 22 tons≤tundish between 22 tons of low liquid level 9
It is reduced to 20NL/min；
4) ladle is changed after the completion of bag, and molten steel is increased to after the normal cast liquid level 8 that molten steel net weight is 30 tons in tundish,
Molten steel net weight >=30 ton i.e. in tundish, the argon flow amount of bar shaped air brick 3 increases to 30NL/min；
5) after big bag stops pouring, molten steel net weight is that 30 tons of normal cast liquid level 7 is reduced to steel in tundish from tundish
Water net weight is 30 tons of molten steel net weight ＜, the argon flow amount of bar shaped air brick 3 in i.e. 22≤tundish between 22 tons of low liquid level 9
It is reduced to 20NL/min；
6) molten steel is reduced to after the low liquid level 9 that molten steel net weight in tundish is 22 tons in tundish, i.e., middle
22 tons of molten steel net weight ＜ in bag, stops the Argon of bar shaped air brick 3.
The argon gas pipeline system element, is market purchasing, wherein the ball valve (including the first ball valve 20a, the second ball
Valve 20b, the 3rd ball valve 20c, the 4th ball valve 20d) model specification be 304SS-1/2, the model specification of pneumatic filter (21)
It is BK110-3, the model specification of pressure gauge (including first pressure table 22a, first pressure table 22b) is YT40, pressure transmitter
(23) model specification is 8323-25-G1/2, and the model specification of magnetic valve (24) is 5281-1/2-NBR, metallurgical special quality
The model specification of flow controller (25) is Flox (on) s, and range is 0-200NL/min, and the model specification of pressure-reducing valve (26) is
BK100-2, the model specification of manual modulation valve (27) is 28-1/2-MS.
The electric control system element, is market purchasing, wherein the model specification of the PLC control system is west gate
Sub- S7 series, the model specification of PLC analog modules is 4AI/2AO, and the model specification of touch-screen is 7 cun of touch-screens of Siemens,
The model specification of host computer operating system is D610, upper computer software WIN CC more than 6.0.
Embodiment 2
It is used for slab CC tundish bar shaped air brick covering ar blowing refining device as described in Example 1 and Argon is controlled
Method, difference is：
Inclined hole angle of inclination beta in the inclined hole dam 5 is 35 °, and inclined hole lower edge to tundish underwrites lining work hanging down for 6 working faces
Straight is 30mm apart from x, and barricade 4 is 250mm with the horizontal range a of inclined hole dam 5.
The inner arc radius r of the arc structure of the impregnating cover 2 is 250mm, and the action i of circular arc is 150mm, and thickness f is
150mm。
Molten steel normally pours into a mould depth v of the liquid level below 8 for 100mm in the lower end immersion tundish of the impregnating cover 2.
The upper end of the impregnating cover 2 is 100mm apart from j to the lower end of tundish cover 13.
The circular arc top of the impregnating cover 2 is uniformly distributed 7 steam vents 14, and the diameter D of steam vent is 10mm.
The top of described bar shaped air brick 3 be higher by tundish underwrite lining work 6 height y be 10mm.
Described bar shaped air brick 3, its height n is 115mm, and width m is 130mm, and the inner chamber circular diameter ￠ of air chamber 13 is
40mm, the height w of the center line of air chamber 3 is 30mm, and air chamber 3 is 100mm apart from e with the cecum of bar shaped air brick matrix 12, embedded
The length z of sleeve pipe 14 is 90mm, and the thickness p of clay 15 is 15mm.
The inner chamber of the turbulent flow suppressor 1 is 450mm in cylinder, inner chamber diameter of a circle d, and the height h of inner chamber circle is
400mm。
The height k of the inclined hole dam 5 is 420mm, and thickness u is 150mm, and the radius R of inclined hole is 45mm, the height of barricade 4
Degree H is 900mm, and thickness L is 100mm.
It is as follows that the argon flow amount of the Argon control system PLC automatically controls instruction：
1) from unwrapping greatly before pouring to tundish the normal cast liquid level 8 that molten steel net weight is 30 tons, i.e. in 0 ＜ tundish
30 tons of molten steel net weight ＜, it is big unwrap pour while, open argon gas, the argon flow amount of bar shaped air brick 3 is controlled in 15NL/min；
2) after molten steel reaches the normal cast liquid level 8 that molten steel net weight is 30 tons in tundish, i.e., molten steel is net in tundish
Weight >=30 ton, the argon flow amount of bar shaped air brick 3 increases to 40NL/min；
3) big bag is changed, and molten steel net weight is that 30 tons of normal cast liquid level 7 is reduced to molten steel in tundish from tundish
Net weight is 30 tons of molten steel net weight ＜, the argon flow amount of bar shaped air brick 3 in i.e. 22 tons≤tundish between 22 tons of low liquid level 9
It is reduced to 30NL/min；
4) ladle is changed after the completion of bag, and molten steel is increased to after the normal cast liquid level 8 that molten steel net weight is 30 tons in tundish,
Molten steel net weight >=30 ton i.e. in tundish, the argon flow amount of bar shaped air brick 3 increases to 40NL/min；
5) after big bag stops pouring, molten steel net weight is that 30 tons of normal cast liquid level 7 is reduced to steel in tundish from tundish
Water net weight is 30 tons of molten steel net weight ＜ in i.e. 22 tons≤tundish, the argon gas stream of bar shaped air brick 3 between 22 tons of low liquid level 9
Amount is reduced to 30NL/min；
6) molten steel is reduced to after the low liquid level 9 that molten steel net weight in tundish is 22 tons in tundish, i.e., middle
22 tons of molten steel net weight ＜ in bag, stops the Argon of bar shaped air brick 3.
Embodiment 3
It is used for slab CC tundish bar shaped air brick covering ar blowing refining device as described in Example 1 and Argon is controlled
Method, difference is：
Inclined hole angle of inclination beta in the inclined hole dam 5 is 32 °, and inclined hole lower edge to tundish underwrites lining work hanging down for 6 working faces
Straight is 27mm apart from x, and barricade 4 is 270mm with the horizontal range a of inclined hole dam 5.
The inner arc radius r of the arc structure of the impregnating cover 2 is 270mm, and the action i of circular arc is 200mm, and thickness f is
130mm。
Molten steel normally pours into a mould depth v of the liquid level below 8 for 120mm in the lower end immersion tundish of the impregnating cover 2.
The upper end of the impregnating cover 2 is 80mm apart from j to the lower end of tundish cover 13.
The circular arc top of the impregnating cover 2 is uniformly distributed 6 steam vents 14, and the diameter D of steam vent is 15mm.
The top of described bar shaped air brick 3 be higher by tundish underwrite lining work 6 height y be 15mm.
Described bar shaped air brick 3, its height n is 100mm, and width m is 125mm, and the inner chamber circular diameter ￠ of air chamber 13 is
35mm, the height w of the center line of air chamber 3 is 35mm, and air chamber 3 is 95mm apart from e with the cecum of bar shaped air brick matrix 12, embedded set
The length z of pipe 14 is 95mm, and the thickness p of clay 15 is 12mm.
The inner chamber of the turbulent flow suppressor 1 is 420mm in cylinder, inner chamber diameter of a circle d, and the height h of inner chamber circle is
380mm。
The height k of the inclined hole dam 5 is 380mm, and thickness u is 160mm, and the radius R of inclined hole is 42mm, the height of barricade 4
Degree H is 870mm, and thickness L is 120mm.
It is as follows that the argon flow amount of the Argon control system PLC automatically controls instruction：
1) from unwrapping greatly before pouring to tundish the normal cast liquid level 8 that molten steel net weight is 30 tons, i.e. in 0 ＜ tundish
30 tons of molten steel net weight ＜, it is big unwrap pour while, open argon gas, the argon flow amount of bar shaped air brick 3 is controlled in 12NL/min；
2) after molten steel reaches the normal cast liquid level 8 that molten steel net weight is 30 tons in tundish, i.e., molten steel is net in tundish
Weight >=30 ton, the argon flow amount of bar shaped air brick 3 increases to 35NL/min；
3) big bag is changed, and molten steel net weight is that 30 tons of normal cast liquid level 7 is reduced to molten steel in tundish from tundish
Net weight is 30 tons of molten steel net weight ＜, the argon flow amount of bar shaped air brick 3 in i.e. 22 tons≤tundish between 22 tons of low liquid level 9
It is reduced to 25NL/min；
4) ladle is changed after the completion of bag, and molten steel is increased to after the normal cast liquid level 8 that molten steel net weight is 30 tons in tundish,
Molten steel net weight >=30 ton i.e. in tundish, the argon flow amount of bar shaped air brick 3 increases to 35NL/min；
5) after big bag stops pouring, molten steel net weight is that 30 tons of normal cast liquid level 7 is reduced to steel in tundish from tundish
Water net weight is 30 tons of molten steel net weight ＜ in i.e. 22 tons≤tundish, the argon gas stream of bar shaped air brick 3 between 22 tons of low liquid level 9
Amount is reduced to 25NL/min；
6) molten steel is reduced to after the low liquid level 9 that molten steel net weight in tundish is 22 tons in tundish, i.e., middle
22 tons of molten steel net weight ＜ in bag, stops the Argon of bar shaped air brick 3.
Experimental example
Comparative example：Chinese patent literature CN103862014A (application numbers：201410114064.4) disclosing one kind is used for
Remove the purifier and method of refining of molten steel inclusion in continuous casting production.
By the purifier of the utility model embodiment 1-3 and comparative example 1 according to 1:2 modelings carry out hydraulic model trial, blow
Measure as under the conditions of 8L/min, the mean residence time of measure and dead band ratio comparative analysis are as shown in table 1：
Table 1
| Scheme | Mean residence time/min | Dead band ratio/% |
| Embodiment 1 | 6.158 | 1.408 |
| Embodiment 2 | 6.126 | 1.501 |
| Embodiment 3 | 6.142 | 1.472 |
| Comparative example | 5.302 | 3.461 |
By the purifier of embodiment 1-3 and argon gas control method and purifier and method of refining disclosed in comparative example 1
In Laiwu steel enterprise Yin Shan shaped steel Co., Ltd steel mill single current wide slab continuous caster machine cast production steel grade Q690D, casting is determined
Base bulk sample electrolysis field trash and impregnating cover producing cost comparative analysis are as shown in table 2：
Table 2
By the Data Comparison of table 1, in the hydraulic model trial of the utility model embodiment 1-3, the mean residence time of measure
Comparative example CN103862014A (application numbers on year-on-year basis：201410114064.4) increase by more than 15%, dead band ratio comparative example on year-on-year basis
CN103862014A (application numbers：201410114064.4) more than 50% is reduced.
By the Data Comparison of table 2, using purifier of the present utility model and argon gas control method, embodiment 1-3 lifes
The continuous casting billet sample of output is electrolysed field trash weight Comparison study example CN103862014A (application numbers on year-on-year basis：
201410114064.4) the electrolysis field trash weight in the continuous casting billet of production reduces more than 30% on year-on-year basis, prepared by embodiment 1-3
Impregnating cover expense comparative example CN103862014A (application numbers on year-on-year basis：201410114064.4) more than 90% is reduced.
Claims (10)
1. it is a kind of to be used for slab CC tundish bar shaped air brick covering ar blowing refining device, including turbulence inhibitor (1), dipping
Cover (2), bar shaped air brick (3), barricade (4), inclined hole dam (5), it is characterised in that turbulence inhibitor is arranged on tundish beam
The inner side of impact zone containment wall working lining, its longitudinal centre line overlaps with the center line of big bag long nozzle (12), bar shaped air brick (3)
All it is fixed on tundish bag bottom permanent liner (7) with the bottom of inclined hole dam (5), and is partly embedded into tundish and is underwrited lining work
(6) in, impregnating cover (2) is directly over bar shaped air brick (3) and relative with bar shaped air brick (3), in the longitudinal direction of impregnating cover (2)
Heart line overlaps with the longitudinal centre line of bar shaped air brick (3), and the two side ends of impregnating cover (2) and barricade (4) are all fixed on tundish
In containment wall permanent liner.
2. slab CC tundish bar shaped air brick covering ar blowing refining device is used for as claimed in claim 1, and its feature exists
It is circular arc single layer structure in, impregnating cover (2), the lower end immersion continuous casting steel of impregnating cover (2) is guaranteed replacement molten steel in packet procedures tundish
Below, the upper end of impregnating cover (2) is located at tundish cover (13) with the normal potting syrup of molten steel in tundish for cast minimum level (9)
In space between face (8), inclined hole dam (5) positioned at the summit (A) at tundish bag bottom permanent liner turning, in inclined hole dam (5)
Inclined hole angle of inclination beta be 30 °~35 °, inclined hole lower edge to tundish underwrite lining work the vertical range x of (6) working face for 25~
32mm, barricade (4) between turbulence inhibitor (1) and inclined hole dam (5), the horizontal range of barricade (4) and inclined hole dam (5)
A is 250~302mm, and center of the bar shaped air brick (3) between barricade (4) and turbulent flow suppressor (1), i.e. bar shaped are breathed freely
Brick (3) center line is to barricade (4) apart from b and bar shaped air brick (3) to the equal apart from c of turbulent flow suppressor (1).
3. slab CC tundish bar shaped air brick covering ar blowing refining device is used for as claimed in claim 1, and its feature exists
In the inner arc radius r of impregnating cover (2) arc structure is 250~300mm, and the action i of circular arc is 150~202mm, thick
Degree f is 120~152mm.
4. slab CC tundish bar shaped air brick covering ar blowing refining device is used for as claimed in claim 1, and its feature exists
In molten steel normally pours into a mould liquid level (8) depth v below for 100~152mm in the lower end immersion tundish of impregnating cover (2)；
The upper end of impregnating cover (2) is 50~101mm apart from j to tundish cover (13) lower end；
The circular arc top of impregnating cover (2) is uniformly distributed 5~7 steam vents (14), and the diameter D of steam vent (14) is 10~21mm.
5. slab CC tundish bar shaped air brick covering ar blowing refining device is used for as claimed in claim 1, and its feature exists
Be higher by tundish to underwrite lining work the height y of (6) in the top of, described bar shaped air brick (3) is 10~21mm, saturating in bar shaped
Gas brick (3) is higher by the sidepiece that tundish underwrites lining work (6), and streamlining is smeared using coating (11).
6. slab CC tundish bar shaped air brick covering ar blowing refining device is used for as claimed in claim 1, and its feature exists
In, described bar shaped air brick (3), including bar shaped air brick matrix (15), air chamber (16), air inlet pipe (19), air brick matrix
(15) air chamber (16) is provided with, the inlet end of air chamber is connected and seals with air inlet pipe (19), one end of air inlet pipe (19) and gas
Room connects, and the other end stretches out air brick matrix, connects source of the gas.
7. slab CC tundish bar shaped air brick covering ar blowing refining device is used for as claimed in claim 1, and its feature exists
In described bar shaped air brick (3), its height n is 95~115mm, and width m is 120~131mm, and air chamber (16) is cylinder
Inner chamber, diameter of a circle ￠ is 30~41mm, and the height w of air chamber (16) center line is 40~51mm, and air chamber (16) is breathed freely with bar shaped
The cecum of brick matrix (15) is 90~101mm apart from e, and the length z of embedded sleeve pipe (17) is 90~102mm, the thickness of clay (18)
Degree p is 10~16mm.
8. slab CC tundish bar shaped air brick covering ar blowing refining device is used for as claimed in claim 1, and its feature exists
In in cylinder, inner chamber diameter of a circle d is 400~451mm, and the height h of inner chamber circle is for the inner chamber of the turbulent flow suppressor (1)
350~402mm.
9. slab CC tundish bar shaped air brick covering ar blowing refining device is used for as claimed in claim 1, and its feature exists
In described turbulent flow suppressor (1), impregnating cover (2), barricade (4), inclined hole dam (5) are poured into using castable
Type, and fired in 400~450 DEG C of middle temperature and form, the wherein height k of inclined hole dam (5) is 330~420mm, thickness u is 150~
180mm, the radius R of inclined hole is 39~45mm, and the height H of barricade (4) is 850~900mm, and thickness L is 100~150mm.
10. a kind of argon gas control system for continuous casting production ar blowing refining device, argon gas control system includes argon gas pipeline
System and electric control system,
The argon gas pipe-line system, is divided into master and blows branch road and manual bypass, wherein master blows branch road includes the first ball being sequentially connected
Valve (20a), pneumatic filter (21), first pressure table (22a), the second ball valve (20b), pressure transmitter (23), magnetic valve
(24), metallurgical special mass flow controller (25), pressure-reducing valve (26), second pressure table (22b), the 3rd ball valve (20c), manually
Bypass includes the 4th ball valve (20d), the manual modulation valve (27) that are sequentially connected, and manual bypass is connected to dynamic bypass first pressure table
Between (22a) and second pressure table (22b), with the second ball valve (20b), pressure transmitter (23), the magnetic valve that master blows branch road
(24), metallurgical special mass flow controller (25), pressure-reducing valve (26) are in parallel；For master blow branch road break down after, manually behaviour
Apply, pipeline parts annexation is that argon gas pipe-line system is positioned in switch board, it is characterised in that argon gas pipe-line system
In pressure transmitter (23), pressure-reducing valve (26), with mechanical and electronic type dual-pressure automatic compensation function,
The electric control system, including Argon control system PLC, touch-screen, host computer operating system, network switch, company
Casting basic automation systems, each system is connected by ethernet communication with network switch, and molten steel weighing system is received in tundish
Collection, send tundish in Metal Weight to continuous casting basic automation systems,
The Argon control system PLC is special by ethernet communication collection, upload first pressure table (22a) pressure value, metallurgy
Mass flow controller (25) flow value, second pressure table (22b) pressure value are held to continuous casting basic automation systems database
The argon flow amount of row Argon control system PLC automatically controls instruction, according to the change of molten steel net weight in tundish, adjusts argon gas stream
Amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621359506.2U CN206296434U (en) | 2016-12-12 | 2016-12-12 | One kind is used for slab CC tundish bar shaped air brick covering ar blowing refining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621359506.2U CN206296434U (en) | 2016-12-12 | 2016-12-12 | One kind is used for slab CC tundish bar shaped air brick covering ar blowing refining device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206296434U true CN206296434U (en) | 2017-07-04 |
Family
ID=59213881
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|---|---|---|---|
| CN201621359506.2U Active CN206296434U (en) | 2016-12-12 | 2016-12-12 | One kind is used for slab CC tundish bar shaped air brick covering ar blowing refining device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106513608A (en) * | 2016-12-12 | 2017-03-22 | 山东钢铁股份有限公司 | Covered argon blowing refining device for slab continuous casting tundish strip-shaped air brick and argon control method |
| CN107838388A (en) * | 2017-12-25 | 2018-03-27 | 山东钢铁股份有限公司 | A kind of continuous casting production Argon metallurgical plant and argon gas control method |
| CN113510237A (en) * | 2021-07-14 | 2021-10-19 | 东北大学 | Tundish with slag avoiding function under protective atmosphere and use method |
| CN115041672A (en) * | 2022-06-16 | 2022-09-13 | 山东钢铁股份有限公司 | Tundish turbulence controller, installation method and argon blowing method for steel for pipeline |
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2016
- 2016-12-12 CN CN201621359506.2U patent/CN206296434U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106513608A (en) * | 2016-12-12 | 2017-03-22 | 山东钢铁股份有限公司 | Covered argon blowing refining device for slab continuous casting tundish strip-shaped air brick and argon control method |
| CN107838388A (en) * | 2017-12-25 | 2018-03-27 | 山东钢铁股份有限公司 | A kind of continuous casting production Argon metallurgical plant and argon gas control method |
| CN107838388B (en) * | 2017-12-25 | 2023-07-14 | 山东钢铁股份有限公司 | Argon blowing metallurgical device for continuous casting tundish and argon control method |
| CN113510237A (en) * | 2021-07-14 | 2021-10-19 | 东北大学 | Tundish with slag avoiding function under protective atmosphere and use method |
| CN115041672A (en) * | 2022-06-16 | 2022-09-13 | 山东钢铁股份有限公司 | Tundish turbulence controller, installation method and argon blowing method for steel for pipeline |
| CN115041672B (en) * | 2022-06-16 | 2023-12-19 | 山东钢铁股份有限公司 | Tundish turbulence controller, installation method and argon blowing method for pipeline steel |
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