CN108393480A - A kind of herringbone fashion suitable for Profiled Slab CCM full guard casting shunts the mouth of a river - Google Patents
A kind of herringbone fashion suitable for Profiled Slab CCM full guard casting shunts the mouth of a river Download PDFInfo
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- CN108393480A CN108393480A CN201810475684.9A CN201810475684A CN108393480A CN 108393480 A CN108393480 A CN 108393480A CN 201810475684 A CN201810475684 A CN 201810475684A CN 108393480 A CN108393480 A CN 108393480A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
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- 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
- B22D11/10—Supplying or treating molten metal
- B22D11/103—Distributing the molten metal, e.g. using runners, floats, distributors
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Abstract
The invention belongs to technical field of ferrous metallurgy, disclose a kind of herringbone fashion shunting mouth of a river suitable for Profiled Slab CCM full guard casting.The mouth of a river top that herringbone fashion shunts the mouth of a river is straight tubular construction, and mouth of a river lower part is split into two small mouths of a river.The length on mouth of a river top 2 is the 10~30% of mouth of a river total length, and the internal diameter at the small mouth of a river is the 50~70% of 2 internal diameter of mouth of a river top.The present invention also provides the production methods that the herringbone fashion shunts the mouth of a river.The mouth of a river is shunted using herringbone fashion provided by the invention, it is only necessary to which 1 stopper and 1 set of argon seal apparatus can realize full guard casting of the molten steel from tundish into Beam Blank Mould, have sufficient space to install stopper and argon seal apparatus.It can realize that the full guard of Profiled Slab CCM is poured into a mould using the herringbone fashion provided by the invention shunting mouth of a river, solve the problems, such as the secondary oxidation in molten steel casting process, can cast containing aluminium, rare earth, titanium etc. easily by the steel grade of oxidizing elemental, promote the quality and added value of steel.
Description
Technical field
The invention belongs to technical field of ferrous metallurgy, are related to a kind of mouth of a river of casting.In particular it relates to one
Kind shunts the mouth of a river suitable for the herringbone fashion of Profiled Slab CCM full guard casting.
Background technology
Steel it is continuous cast be will the liquid molten steel with certain degree of superheat by water mold continuous coo1ing at
The process of the solid strand of definite shape needs the casing made there are one refractory material by molten steel from centre in the process
In packet injection crystallizer, which is referred to as submersed nozzle.Submersed nozzle is mounted in tundish bottom plate simultaneously
Mold liquid level is inserted into hereinafter, its main function is the secondary oxidation for preventing molten steel, nitridation, splash, at the same avoid liquid level slag,
The flow pattern and Temperature Distribution for adjusting Mold, to promote the uniform zero defect growth of the green shell in crystallizer, and
Reduce the gas and non-metallic inclusion in molten steel to the greatest extent.
As shown in attached drawing 5 of the invention, attached drawing 6, the crystallizer section configuration of Profiled Slab CCM is complicated, and crystallizer is in
Between wrap between narrow space, the general unlimited pouring technology production using double metering nozzle+semi-submersible mouths of a river.Semi-submersible water
Mouth is supported on using set coil support on the edge of a wing trigonum of crystallizer, and the diffusing of steel stream, bias current problem cause water in casting process
Mouthful cold steel is tied, to be solved by adjusting the position at the semi-submersible mouth of a river or oxygen blast, steel caused by the secondary oxidation problem of molten steel
Water pollution is that the casting pattern is insurmountable, fundamental issue of limit product quality.This kind of unlimited secondary oxygen of casting pattern
Change seriously, can not cast containing aluminium, rare earth, titanium etc. easily by the steel grade of oxidizing elemental, constrain the shaped blank of excellent mechanical performance
The exploitation of steel grade.
In existing report, has and submersed nozzle is installed at the web position of Beam Blank Mould to realize stopper+leaching
Enter the full guard casting pattern at the formula mouth of a river, but the narrower in width at Beam Blank Mould cross sectional web position, generally 70~
120mm, the arrangement mouth of a river easily leads to the mass defects such as web crackle at so narrow size positions, the reason is that being flowed out from the mouth of a river
Steel flow velocity degree reach 1~3 meter per second, the molten steel quickly flowed can wash away the strand web newly solidified, cause web solidify position
Place solidifies unstable.
CN203541512U (application number 201320689894.0) discloses one kind and is braked for slab or continuous beam blank casting
Formula soaking water gap, including mouth of a river side wall, the open-topped herringbone that is surrounded with the bottom of side wall one and side wall and bottom
Endoporus is respectively arranged with the runner hole tilted down, the entrance in runner hole and open end on the side wall of two open ends of endoporus
Connection, the utility model act on existing molten steel in crystallizer using the first kinetic energy of molten steel itself and special exercise track, to
The mode for changing molten steel flow field, it is more energy saving to compare electromagnetic braking, and utilize for slab or the immersion of continuous beam blank casting brake type
The mouth of a river is in casting process, if it find that vertical direction position is improper, it can be by replacing various forms of immersions online
The mouth of a river or fine tuning pans height or fine tuning Casting speed realize brake type soaking water gap to molten steel in mold flowing braking
Optimization.Mouth of a river inner cavity has been carried out special designing by the technology, and molten steel is enable to be flowed out in rotary manner from the runner hole at the mouth of a river,
Although its mouth of a river bottom extends slightly to both sides, extended amplitude is little, and the appearance at the mouth of a river is still similar with the straight tube shape mouth of a river, phase
Outer diameter compared with the width at Beam Blank Mould web position, the straight barrel type mouth of a river is still excessive, if the mouth of a river is inserted into
At the narrow web position of beam blank mould, the decanting point of molten steel is still to lead to from the mouth of a river lower flow channel hole at web position
The rotation molten steel of road outflow still can wash away at weak strand web, easily cause the mass defects such as web crackle.
In existing report, has and submersed nozzle is installed at the edge of a wing triangle zone position of Beam Blank Mould to realize plug
The full guard casting pattern of stick+submersed nozzle, but in a crystallizer exist two edges of a wing trigonum, two edges of a wing trigonum it
Between distance it is closer, about 300~800mm, if being respectively mounted the submersed nozzle of stopper control in two edges of a wing trigonum, so it is short
Distance install two stoppers stopper can be caused difficult to install, if only edge of a wing trigonum install stopper control immersion
The mouth of a river is located at since edge of a wing trigonum is not located at the center position of crystallizer at the corner location of crystallizer, from this to whole
Beam can cause the liquid steel temperature of Beam Blank Mould both sides uneven in a crystallizer, and mold liquid level also easily fluctuates,
Slab quality is adversely affected.
Invention content
In view of the above problems, the present invention provides a kind of herringbone fashion shunting suitable for Profiled Slab CCM full guard casting
The top at the mouth of a river, the mouth of a river is straight tubular construction and is connect with tundish upper nozzle that connecting portion is protected using argon seal apparatus, water
The lower part of mouth is divided into two thinner small mouths of a river, and the small mouth of a river is inserted into the edge of a wing trigonum in crystallizer.Using in stopper control
Between wrap the flow of molten steel in the mouth of a river, when molten steel flows through mouth of a river lower part, by the shunting at two thinner small mouths of a river, flow into crystallization
In edge of a wing trigonum in device, it is only necessary to which 1 stopper and 1 set of argon seal apparatus can realize molten steel from tundish to shaped blank knot
Full guard casting in brilliant device, has sufficient space to install stopper and argon seal apparatus.Molten steel is by two small mouths of a river from two
In edge of a wing trigonum injection crystallizer at symmetric position, since two decanting points are in symmetric position, it may be implemented to tie
The steady flow of molten steel in brilliant device, liquid level fluctuation of molten steel is small, and liquid steel temperature is uniform.
The present invention provides a kind of herringbone fashion shunting mouth of a river suitable for Profiled Slab CCM full guard casting, herringbone fashion point
The structure of flowing water mouth is as shown in Figure 1, Figure 2, Figure 3 shows；Mouth of a river top 2 is straight tubular construction, and mouth of a river lower part 4 is split into two small water
Mouthful.
Make the mouth of a river material be：Corundum, aluminum-spinel, carbon dust, silica flour, boron carbide, phenolic resin etc. make the mouth of a river
Common used material.Those skilled in the art can select according to actual needs.
Preferably, the length on mouth of a river top 2 is the 10~30% of mouth of a river total length, and the internal diameter at the small mouth of a river is mouth of a river top 2
The 50~70% of internal diameter.
Preferably, mouth of a river lower part 4 is split into two small mouths of a river by the steel circulation road of arc.
Preferably, the herringbone fashion shunting mouth of a river further includes core pattern steel plate 7, and core pattern steel plate 7 is tubular structure, and is embedded in the mouth of a river
Mouth of a river skeleton is played the role of in inside.It is furthermore preferred that being welded with anchoring piece 6 on core pattern steel plate, anchoring piece 6 is Y types or strip
Anchoring piece, anchoring piece 6 weld on the steel plate, play the role of core steel plate and the mouth of a river is firmly fixed.
When molten steel flows through the steel circulation road of arc, since molten steel is not vertical downflow, the mouth of a river needs to resist steel
The gravity of the impact force and carrying steel stream of stream, the mouth of a river needs higher intensity, is embedded with type in the inside of mouth of a river ontology thus
Core steel plate plays the role of mouth of a river skeleton, and Y types or strip anchoring piece are welded on steel plate, plays core steel plate and the mouth of a river
The firmly fixed effect of ontology.Core pattern steel plate 7 is tubular structure, and the thickness of core pattern steel plate 7 is 2~4mm, core pattern steel plate 7 it is interior
Diameter is the 80~90% of mouth of a river outer diameter.
It is heated easily to cause mouth of a river crackle since steel plate is different with the coefficient of expansion of refractory material, to reduce mouth of a river crackle
Core steel plate trepanning is made inside and outside refractory material unicom by incidence.Preferably, the 7 surface trepanning of core pattern steel plate, hole area account for
The 10~30% of 7 total surface area of core pattern steel plate.
To improve the service life at the mouth of a river, is washed away by steel stream and corrode the wall thickness of serious mouth of a river crooked position and to be significantly greater than
The wall thickness at other positions of the mouth of a river.It is washed away by steel stream and corrodes wall of the wall thickness of serious mouth of a river arc part than other positions of the mouth of a river
Thick 10~30%.
The present invention also provides the application method that the herringbone fashion shunts the mouth of a river, the mouth of a river top at the herringbone fashion shunting mouth of a river
2 connect with tundish upper nozzle 9, and connecting portion is protected using argon seal apparatus 10.
Preferably, the flow of molten steel in tundish upper nozzle 9 is controlled using stopper 8.
Preferably, the two small mouth of a river is inserted into the edge of a wing trigonum in crystallizer.It is furthermore preferred that two small mouths of a river are vertically inserted
Enter in the edge of a wing trigonum in crystallizer.Preferably, the small mouth of a river is inserted into the edge of a wing trigonum 12 in crystallizer, and molten steel flows through water
When mouth lower part 4, by the shunting at two thinner small mouths of a river, flow into the edge of a wing trigonum 12 in crystallizer, molten steel passes through two
A small mouth of a river is injected from two edge of a wing trigonums 12 from the symmetric position in crystallizers 11, since two decanting points are in pair
Claim position, the steady flow of molten steel in crystallizer 11 may be implemented, liquid level fluctuation of molten steel is small, and liquid steel temperature is uniform.
Only need 1 stopper and 1 set of argon seal apparatus that can realize molten steel from tundish 13 into Beam Blank Mould 11
Full guard casting, have sufficient space that stopper 8 and argon seal apparatus 10 are installed.
The present invention also provides the production methods that the herringbone fashion shunts the mouth of a river, include the following steps：
A) gate mould is made according to mouth of a river shape；
B) the core pattern steel plate 7 in the processing and fabricating mouth of a river, core pattern steel plate 7 is tubular structure, and is embedded in the inside of mouth of a river ontology,
Play the role of mouth of a river skeleton, the thickness of core pattern steel plate 7 is 2~4mm, the internal diameter of core pattern steel plate 7 be mouth of a river outer diameter 80~
90%, Y types or strip anchoring piece 6 are welded on steel plate, play the role of core steel plate and mouth of a river ontology is firmly fixed, core
7 surface trepanning of shape steel plate, hole area account for the 10~30% of 7 total surface area of core pattern steel plate.
C) that the refractory material for preparing to make the mouth of a river is compound with core pattern steel plate 7 after being granulated, drying, it is quiet in gate mould
It after molded, is burnt under nonoxidizing atmosphere, firing temperature is between 900 DEG C~1200 DEG C, you can is made of the present invention
Herringbone fashion suitable for Profiled Slab CCM full guard casting shunts the mouth of a river.
Preferably, the refractory material at the preparation making mouth of a river is：Corundum, aluminum-spinel, carbon dust, silica flour, boron carbide, phenolic aldehyde
Resin etc. makes the common used material at the mouth of a river.
The nonoxidizing atmosphere is nitrogen protection.
Advantages of the present invention：
(1), the mouth of a river is shunted using herringbone fashion provided by the invention, it is only necessary to which 1 stopper and 1 set of argon seal apparatus can be real
Full guard casting of the existing molten steel from tundish into Beam Blank Mould, has sufficient space to install stopper and argon seal apparatus.
Molten steel is out of two the edge of a wing trigonum injection crystallizer from symmetric position, since two decanting points are in symmetric position,
The steady flow of molten steel in mold may be implemented, liquid level fluctuation of molten steel is small, and liquid steel temperature is uniform.
(2), it can realize that the full guard of Profiled Slab CCM is poured into a mould using the herringbone fashion provided by the invention shunting mouth of a river, solve
Secondary oxidation problem in molten steel casting process can cast containing aluminium, rare earth, titanium etc. easily by the steel grade of oxidizing elemental, promote steel
Quality and added value.
Description of the drawings
Fig. 1 is a kind of herringbone fashion shunting mouth of a river schematic diagram suitable for Profiled Slab CCM full guard casting.
Fig. 2 is a kind of herringbone fashion shunting mouth of a river sectional view suitable for Profiled Slab CCM full guard casting.
Fig. 3 is the sectional view in the sections AA in Fig. 2
Fig. 4 is that herringbone fashion shunts schematic diagram during the use of the mouth of a river.
Fig. 5 is 1 corresponding Beam Blank Mould cross dimensions of embodiment.
Fig. 6 is 2 corresponding Beam Blank Mould cross dimensions of embodiment.
Wherein 1 is：The steel circulation road on mouth of a river top, 2 are：Mouth of a river top, 3：The steel circulation road of mouth of a river lower part, 4 are：The mouth of a river
Lower part, 5 are：Mouth of a river slag lining, the 6 Y type anchoring pieces to be welded on core pattern steel plate, 7 are：Core pattern steel plate, 8 be stopper, during 9 are
Between wrap the mouth of a river, 10 be argon seal apparatus, and 11 be Profiled Slab CCM crystallizer, and 12 be the edge of a wing in Profiled Slab CCM crystallizer
Trigonum, 13 be tundish.
Specific implementation mode
The present invention provides a kind of herringbone fashion shunting mouth of a river suitable for Profiled Slab CCM full guard casting, herringbone fashion point
The structure of flowing water mouth is as shown in Figure 1, Figure 2, Figure 3 shows, the mouth of a river top 2 at the mouth of a river be straight tubular construction and with tundish upper nozzle 9
Connection, connecting portion are protected using argon seal apparatus 10, and the length on the mouth of a river top 2 at the straight barrel type mouth of a river is mouth of a river total length
10~30%, mouth of a river lower part 4 is divided into two thinner small mouths of a river, and the small mouth of a river is inserted into the edge of a wing trigonum 12 in crystallizer, small
The internal diameter at the mouth of a river is the 50~70% of 2 internal diameter of mouth of a river top.The flow of molten steel in tundish upper nozzle 9, steel are controlled using stopper 8
When water flows through mouth of a river lower part 4, by the shunting at two thinner small mouths of a river, flow into the edge of a wing trigonum 12 in crystallizer, only
Need 1 stopper and 1 set of argon seal apparatus that can realize that molten steel is poured from full guard of the tundish 13 into Beam Blank Mould 11
Casting has sufficient space to install stopper 8 and argon seal apparatus 10.Molten steel is in from two from symmetric position by two small mouths of a river
Edge of a wing trigonum 12 inject crystallizer 11 in, since two decanting points are in symmetric position, steel in crystallizer 11 may be implemented
The steady flow of water, liquid level fluctuation of molten steel is small, and liquid steel temperature is uniform.
Mouth of a river lower part 4 is split into two small mouths of a river by the steel circulation road of arc, and two small mouths of a river are inserted perpendicularly into crystallizer
In interior edge of a wing trigonum 12.
To improve the service life at the mouth of a river, washed away by steel stream corrode the wall thickness of serious mouth of a river arc part than the mouth of a river its
The wall thickness thickness 10~30% at his position.
The manufacturing process at the mouth of a river is：
A:Gate mould is made according to Fig. 1, Fig. 2, mouth of a river shape shown in Fig. 3
B:Prepare the material at the making mouth of a river, material is：Corundum, aluminum-spinel, carbon dust, silica flour, boron carbide, phenolic aldehyde tree
Fat etc. makes the common used material at the mouth of a river.
C:Core pattern steel plate 7 in the processing and fabricating mouth of a river, core pattern steel plate 7 is tubular structure, and is embedded in the inside of mouth of a river ontology,
Play the role of mouth of a river skeleton, the thickness of core pattern steel plate 7 is 2~4mm, the internal diameter of core pattern steel plate 7 be mouth of a river outer diameter 80~
90%, Y types or strip anchoring piece are welded on steel plate, play the role of core steel plate and mouth of a river ontology is firmly fixed, core
7 surface trepanning of shape steel plate, hole area account for the 10~30% of 7 total surface area of core pattern steel plate.
D:The refractory material for preparing to make the mouth of a river is compound with core pattern steel plate 7 after being granulated, drying, it is quiet in gate mould
It after molded, is burnt under nonoxidizing atmosphere, firing temperature is between 900 DEG C~1200 DEG C, you can is made of the present invention
Herringbone fashion suitable for Profiled Slab CCM full guard casting shunts the mouth of a river.
Embodiment 1：
For Beam Blank Mould shown in fig. 5, crystallizer cross dimensions is：550mm × 440mm × 90mm, continuous casting
Machine pulling rate is 1.2~1.5m/min, and the present embodiment provides a kind of herringbone fashions being applicable in Profiled Slab CCM full guard casting point
Flowing water mouth, the structure that herringbone fashion shunts the mouth of a river is as shown in Figure 1, Figure 2, Figure 3 shows, the mouth of a river top 2 at the mouth of a river be straight tubular construction and
It is connect with tundish upper nozzle 9, connecting portion is protected using argon seal apparatus 10, and the internal diameter on the mouth of a river top 2 of straight barrel type is
25mm, outer diameter 120mm, the length on the mouth of a river top 2 of straight barrel type are the 30% of mouth of a river total length, and mouth of a river lower part 4 is divided into two
The thinner small mouth of a river, the small mouth of a river are inserted into the edge of a wing trigonum 12 in crystallizer, and the internal diameter at the small mouth of a river is 2 internal diameter of mouth of a river top
50%.The flow that molten steel in tundish upper nozzle 9 is controlled using stopper 8 is relatively thin by two when molten steel flows through mouth of a river lower part 4
The small mouth of a river shunting, flow into crystallizer in edge of a wing trigonum 12 in, it is only necessary to 1 stopper and 1 set of argon seal apparatus
It realizes full guard casting of the molten steel from tundish 13 into Beam Blank Mould 11, has sufficient space that stopper 8 and argon are installed
Seal apparatus 10.Molten steel is injected from two edge of a wing trigonums 12 from symmetric position in crystallizer 11 by two small mouths of a river,
Since two decanting points are in symmetric position, the steady flow of molten steel in crystallizer 11 may be implemented, liquid level fluctuation of molten steel is small, steel
Coolant-temperature gage is uniform.
Mouth of a river lower part 4 is split into two small mouths of a river by the steel circulation road of arc, and two small mouths of a river are inserted perpendicularly into crystallizer
In interior edge of a wing trigonum 12.
To improve the service life at the mouth of a river, washed away by steel stream corrode the wall thickness of serious mouth of a river arc part than the mouth of a river its
The wall thickness thickness 10% at his position.
The manufacturing process at the mouth of a river is：
A:Gate mould is made according to Fig. 1, Fig. 2, mouth of a river shape shown in Fig. 3
B:Prepare the material at the making mouth of a river, material is：Corundum, aluminum-spinel, carbon dust, boron carbide, silica flour, phenolic aldehyde tree
Fat etc. makes the normalizing material at the mouth of a river.
C:Core pattern steel plate 7 in the processing and fabricating mouth of a river, core pattern steel plate 7 is tubular structure, and is embedded in the inside of mouth of a river ontology,
Play the role of mouth of a river skeleton, the thickness of core pattern steel plate 7 is 2mm, and the internal diameter of core pattern steel plate 7 is the 90% of mouth of a river outer diameter, steel plate
On be welded with Y types or strip anchoring piece, play the role of core steel plate and mouth of a river ontology is firmly fixed, 7 table of core pattern steel plate
Face trepanning, hole area account for the 10% of 7 total surface area of core pattern steel plate.
D:The refractory material for preparing to make the mouth of a river is compound with core pattern steel plate 7 after being granulated, drying, it is quiet in gate mould
It after molded, is burnt under nonoxidizing atmosphere, firing temperature is between 900 DEG C~1200 DEG C, you can is made of the present invention
Herringbone fashion suitable for Profiled Slab CCM full guard casting shunts the mouth of a river.
At the mouth of a river before use, preheating the mouth of a river 2 hours using gas-fired, full guard is carried out using the mouth of a river in casting process
The steel grade of cast, cast contains aluminium 0.03%, and the service life at the mouth of a river is 4 hours, without nozzle clogging phenomenon, casting in casting process
Total oxygen content is 20ppm, casting billet surface flawless in base.It solves the problems, such as to produce Aluminum steel with Profiled Slab CCM.
Embodiment 2：
For Beam Blank Mould shown in fig. 6, crystallizer cross dimensions is：1023.8mm × 390mm × 90mm, even
Casting machine pulling rate is 0.9~1.0m/min, and the present embodiment provides a kind of herringbone fashions being applicable in Profiled Slab CCM full guard casting
The mouth of a river is shunted, the structure that herringbone fashion shunts the mouth of a river is as shown in Figure 1, Figure 2, Figure 3 shows, and the mouth of a river top 2 at the mouth of a river is straight tubular construction
And connect with tundish upper nozzle 9, connecting portion is protected using argon seal apparatus 10, the internal diameter on the mouth of a river top 2 of straight barrel type
For 30mm, outer diameter 130mm, the length on the mouth of a river top 2 of straight barrel type is the 10% of mouth of a river total length, and mouth of a river lower part 4 is divided into two
The thinner small mouth of a river of root, the small mouth of a river are inserted into the edge of a wing trigonum 12 in crystallizer, and the internal diameter at the small mouth of a river is 2 internal diameter of mouth of a river top
70%.Using stopper 8 control tundish upper nozzle 9 in molten steel flow, when molten steel flows through mouth of a river lower part 4, by two compared with
The shunting at the thin small mouth of a river flows into the edge of a wing trigonum 12 in crystallizer, it is only necessary to which 1 stopper and 1 set of argon seal apparatus can
To realize full guard casting of the molten steel from tundish 13 into Beam Blank Mould 11, there is sufficient space that 8 He of stopper is installed
Argon seal apparatus 10.Molten steel injects crystallizer 11 by two small mouths of a river from two edge of a wing trigonums 12 from symmetric position
It is interior, since two decanting points are in symmetric position, the steady flow of molten steel in crystallizer 11, liquid level fluctuation of molten steel may be implemented
Small, liquid steel temperature is uniform.
Mouth of a river lower part 4 is split into two small mouths of a river by the steel circulation road of arc, and two small mouths of a river are inserted perpendicularly into crystallizer
In interior edge of a wing trigonum 12.
To improve the service life at the mouth of a river, washed away by steel stream corrode the wall thickness of serious mouth of a river arc part than the mouth of a river its
The wall thickness thickness 30% at his position.
The manufacturing process at the mouth of a river is：
A:Gate mould is made according to Fig. 1, Fig. 2, mouth of a river shape shown in Fig. 3
B:Prepare the material at the making mouth of a river, material is：Corundum, aluminum-spinel, carbon dust, boron carbide, silica flour, phenolic aldehyde tree
Fat etc. makes the common used material at the mouth of a river.
C:Core pattern steel plate 7 in the processing and fabricating mouth of a river, core pattern steel plate 7 is tubular structure, and is embedded in the inside of mouth of a river ontology,
Play the role of mouth of a river skeleton, the thickness of core pattern steel plate 7 is 2mm, and the internal diameter of core pattern steel plate 7 is the 80% of mouth of a river outer diameter, steel plate
On be welded with Y types or strip anchoring piece, play the role of core steel plate and mouth of a river ontology is firmly fixed, 7 table of core pattern steel plate
Face trepanning, hole area account for the 30% of 7 total surface area of core pattern steel plate.
D:The refractory material for preparing to make the mouth of a river is compound with core pattern steel plate 7 after being granulated, drying, it is quiet in gate mould
It after molded, is burnt under nonoxidizing atmosphere, firing temperature is between 900 DEG C~1200 DEG C, you can is made of the present invention
Herringbone fashion suitable for Profiled Slab CCM full guard casting shunts the mouth of a river.
At the mouth of a river before use, preheating the mouth of a river 3 hours using gas-fired, full guard is carried out using the mouth of a river in casting process
The service life of cast, the steel grade titaniferous 0.05% of cast, the mouth of a river is 4 hours, without nozzle clogging phenomenon, casting in casting process
Total oxygen content is 22ppm, casting billet surface flawless in base.It solves and is produced containing oxidizable element steel grade with Profiled Slab CCM
Problem.
Claims (10)
1. a kind of herringbone fashion suitable for Profiled Slab CCM full guard casting shunts the mouth of a river, which is characterized in that mouth of a river top
(2) it is straight tubular construction, mouth of a river lower part (4) are split into two small mouths of a river.
2. herringbone fashion as described in claim 1 shunts the mouth of a river, which is characterized in that the length of mouth of a river top (2) is mouth of a river overall length
The 10~30% of degree, the internal diameter at the small mouth of a river are the 50~70% of mouth of a river top (2) internal diameter.
3. herringbone fashion as described in claim 1 shunts the mouth of a river, which is characterized in that mouth of a river lower part (4) are circulated by the steel of arc
Road is split into two small mouths of a river；The wall thickness of mouth of a river arc part is thicker than the wall thickness at other positions of the mouth of a river by 10~30%.
4. herringbone fashion as described in claim 1 shunts the mouth of a river, which is characterized in that it further includes core pattern steel plate that herringbone fashion, which shunts the mouth of a river,
(7), core pattern steel plate (7) is tubular structure, and is embedded in the inside at the mouth of a river, plays the role of mouth of a river skeleton.
5. herringbone fashion as described in claim 1 shunts the mouth of a river, which is characterized in that be welded with anchoring piece (6), anchor on core pattern steel plate
Firmware (6) is Y types or strip anchoring piece, and anchoring piece (6) welds on the steel plate, plays and securely fix core steel plate with the mouth of a river
Effect.
6. herringbone fashion as described in claim 1 shunts the mouth of a river, which is characterized in that core pattern steel plate (7) is tubular structure, core pattern steel
The thickness of plate (7) is 2~4mm, and the internal diameter of core pattern steel plate (7) is the 80~90% of mouth of a river outer diameter.
7. herringbone fashion as described in claim 1 shunts the mouth of a river, which is characterized in that core pattern steel plate (7) surface trepanning, hole area
Account for the 10~30% of core pattern steel plate (7) total surface area.
8. the application method at the herringbone fashion shunting mouth of a river as described in claim any one of 1-7, which is characterized in that the herringbone fashion point
The mouth of a river top (2) of flowing water mouth is connect with tundish upper nozzle (9), and connecting portion is protected using argon seal apparatus (10)；It adopts
The flow of tundish upper nozzle (9) interior molten steel is controlled with stopper (8).
9. such as claim 7 or the application method at 8 any one of them herringbone fashions shunting mouth of a river, which is characterized in that two small water
In edge of a wing trigonum in mouth insertion crystallizer.It is furthermore preferred that two small mouths of a river are inserted perpendicularly into the edge of a wing trigonum in crystallizer
It is interior.
10. the production method at any one of the claim 1-7 herringbone fashion shuntings mouth of a river, includes the following steps：
A) gate mould is made according to mouth of a river shape；
B) the core pattern steel plate (7) in the processing and fabricating mouth of a river, core pattern steel plate (7) is tubular structure, and is embedded in the inside of mouth of a river ontology,
Play the role of mouth of a river skeleton, the thickness of core pattern steel plate (7) is 2~4mm, and the internal diameter of core pattern steel plate (7) is the 80 of mouth of a river outer diameter
~90%, Y types or strip anchoring piece (6) are welded on steel plate, are played core steel plate and the firmly fixed work of mouth of a river ontology
With core pattern steel plate (7) surface trepanning, hole area accounts for the 10~30% of core pattern steel plate (7) total surface area；
C) by prepare make the mouth of a river refractory material after being granulated, drying compound, the static pressure in gate mould with core pattern steel plate (7)
It after molding, is burnt under nonoxidizing atmosphere, firing temperature is between 900 DEG C~1200 DEG C, you being suitable for described in being made is different
The herringbone fashion of shape billet continuous casting machine full guard casting shunts the mouth of a river.
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| CN201810475684.9A CN108393480A (en) | 2018-05-17 | 2018-05-17 | A kind of herringbone fashion suitable for Profiled Slab CCM full guard casting shunts the mouth of a river |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109909466A (en) * | 2019-03-19 | 2019-06-21 | 沈阳麒飞新型材料科技有限公司 | A kind of more mouth of a river continuous casting equipments |
| CN111774539A (en) * | 2020-06-08 | 2020-10-16 | 西安斯瑞先进铜合金科技有限公司 | Preparation method of non-vacuum downward-drawing copper-zirconium alloy slab ingot |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109909466A (en) * | 2019-03-19 | 2019-06-21 | 沈阳麒飞新型材料科技有限公司 | A kind of more mouth of a river continuous casting equipments |
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| CN111774539B (en) * | 2020-06-08 | 2021-10-29 | 西安斯瑞先进铜合金科技有限公司 | Preparation method of non-vacuum downward-drawing copper-zirconium alloy slab ingot |
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