CN203992367U - The ladle ventilating filling pipe end brick cup that a kind of yield rate is high - Google Patents
The ladle ventilating filling pipe end brick cup that a kind of yield rate is high Download PDFInfo
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- CN203992367U CN203992367U CN201420326295.7U CN201420326295U CN203992367U CN 203992367 U CN203992367 U CN 203992367U CN 201420326295 U CN201420326295 U CN 201420326295U CN 203992367 U CN203992367 U CN 203992367U
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Abstract
The utility model relates to the ladle ventilating filling pipe end brick cup that a kind of yield rate is high, comprise permeable-gas ceramics rod and air chamber box, in permeable-gas ceramics rod, be evenly equipped with micropore gas passage, permeable-gas ceramics rod is multiple, within one week outside steel outlet hole, be evenly arranged in ringwise in filling pipe end brick cup body, the upper surface of filling pipe end brick cup body is stretched out on the top of each permeable-gas ceramics rod, on air chamber box, be provided with the multiple slots for fixed ventilation ceramic rod relative with permeable-gas ceramics rod, the bottom of each permeable-gas ceramics rod extends in the slot of inlet plenum box.At molten steel ladle during in low liquid level, start to be blown into argon gas from air inlet pipe, around ladle upper nozzle, form annular air curtain barrier, the molten steel that is about to enter filling pipe end is carried out to air purge, promote inclusion floating and removal, controlled and solved ladle upper nozzle eddy generation slag problem, not only improved the cleanliness factor of molten steel, and reduced the molten steel amount in Casting Remnant, reduce on year-on-year basis more than 30%.
Description
Technical field
The utility model relates to the ladle ventilating filling pipe end brick cup that a kind of yield rate is high, belongs to process for making technical field in Ferrous Metallurgy.
Background technology
In conticaster is produced, along with molten steel ladle liquid level reduces, molten steel, in the easy eddy generation of ladle upper nozzle, is involved in into the slag on molten steel surface, enters in conticaster tundish, causes field trash to increase, and causes slab quality defect.Conventionally adopt at present ladle roughing slag detection technique to reduce ladle roughing slag amount, the mode that ladle roughing slag detects mainly contains: detect ladle roughing slag method, detect ladle roughing slag method and detect three kinds of ladle roughing slag methods based on vibration principle based on solenoid based on infrared principles, above-mentioned three kinds of modes can detect and control ladle roughing slag amount automatically, reduce the field trash that is entered continuous casting tundish by ladle.But, in actual production process, find to have following problem: (1) Casting Remnant amount is many, has increased iron and steel stock consumption, cost; (2) although can reduce to a certain extent ladle roughing slag amount, from the technical barrier of unresolved ladle upper nozzle eddy current slag still in essence; (3) although can reduce to a certain extent ladle roughing slag amount, do not remove the function of field trash in molten steel, cleaning molten steel.
Chinese patent literature CN201455253U (the patent No.: 200920016943.8) disclose a kind of a kind of Novel molten steel ladle nozzle pocket block using in steelmaking process, for tubular structure, Rotary-table by top Rotary-table, middle part cylinder, bottom forms, top Rotary-table feeder connection diameter D1 is 150～240mm, and the cylinder channel diameter D2 that bottom connects is 80～100mm.The height L1 of top Rotary-table is 80～200mm.This patent has the following disadvantages: in pocket block, without ventilated element, there is no the function of removal of inclusions, cleaning molten steel, can not suppress ladle mouth of a river slag problem, the molten steel amount in Casting Remnant is many.
Chinese patent literature CN202291395U (the patent No.: 201120408570.6) disclose a kind of air-blowing tapping pocket block, comprise refractory aggregate, permeable-gas ceramics rod, gas blow pipe and air chamber box, described air chamber box has cannelure inner chamber, described permeable-gas ceramics rod and described air chamber box are all arranged in described refractory aggregate, and described permeable-gas ceramics rod and described gas blow pipe are communicated with respectively described air chamber box.Described air-blowing tapping pocket block steel flow is in the time of brick cup, and upwards blowing gas floats with promotion nonmetal inclusion, thereby avoids nonmetal inclusion to be brought into the quality that improves steel in steel.This patent has the following disadvantages: permeable-gas ceramics rod (2) top is concordant with refractory aggregate (1), permeable-gas ceramics rod production location difficulty, and finished product rate is low; The design of brick cup at molten steel outlet cavity shape is unreasonable, and for the ladle tapping mouth of a river, pocket block is low service life, affects ladle life and refractory consumption.
Summary of the invention
For the deficiencies in the prior art, the utility model provides a kind of ladle ventilating filling pipe end brick cup, when ladle ventilating filling pipe end brick cup is produced, permeable-gas ceramics rod location and quick and easy for installation, finished product rate is high, be arranged on ladle, the molten steel that is about to enter filling pipe end is carried out to air purge, inclusion floating and removal are promoted, fundamentally solve the technical barrier of ladle upper nozzle eddy generation slag, not only improve the cleanliness factor of molten steel, and reduced the molten steel amount in Casting Remnant, reduced on year-on-year basis more than 30%.
The ladle ventilating filling pipe end brick cup that a kind of yield rate is high, comprise ladle upper nozzle brick cup body (1), permeable-gas ceramics rod and air chamber box, ladle upper nozzle brick cup body interior is provided with steel outlet hole (6) from top to bottom, filling pipe end installing hole (5), described permeable-gas ceramics rod, air chamber box is all arranged in ladle upper nozzle brick cup body, described air chamber box is positioned at the bottom of permeable-gas ceramics rod and is communicated with permeable-gas ceramics rod, air chamber box is connected with air inlet pipe (4), one end of air inlet pipe is connected to a side of air chamber box, the other end passes from ladle upper nozzle brick cup body, it is characterized in that, in described permeable-gas ceramics rod, be evenly equipped with micropore gas passage, permeable-gas ceramics rod (2) is multiple, within one week outside steel outlet hole, be evenly arranged in ringwise in filling pipe end brick cup body, the upper surface of filling pipe end brick cup body is stretched out on the top of each permeable-gas ceramics rod (2), on air chamber box, be provided with the multiple slots for fixed ventilation ceramic rod relative with permeable-gas ceramics rod, the bottom of each permeable-gas ceramics rod (2) extends in the slot of inlet plenum box.
Preferably, the height m that filling pipe end brick cup body upper surface is stretched out on the top of permeable-gas ceramics rod (2) is 5～10mm, and the degree of depth n that bottom extends in air chamber box is 5～10mm.
The permeable-gas ceramics rod (2) of ladle ventilating filling pipe end brick cup of the present utility model takes shape in the convex platform of ladle ventilating filling pipe end brick cup body, at molten steel ladle during in low liquid level, be blown into argon gas by air inlet pipe (4), argon gas sees through permeable-gas ceramics rod (2) and around filling pipe end, forms annular air curtain barrier, the molten steel that is about to enter filling pipe end is carried out to air purge, inclusion floating and removal are promoted, fundamentally solve the problem of ladle upper nozzle eddy generation slag, not only reduce ladle roughing slag amount, improve the cleanliness factor of molten steel, and reduce the molten steel amount in Casting Remnant, than the Novel molten steel ladle nozzle pocket block in application documents 1 (Chinese patent literature CN201455253U), reduce on year-on-year basis molten steel amount in Casting Remnant more than 30%, and corrosion resistance is strong, long service life.
The utility model is preferred, in described permeable-gas ceramics rod, be evenly equipped with micropore gas passage, adopting low-melting fiber is that raw material mechanical pressing becomes ceramic rod with fused alumina zirconia or zirconia, described low-melting fiber accounts for 0.1～0.5% of raw material total amount, and the micropore that then leaves tubulose after 1600 DEG C～1700 DEG C temperature lower calcinations make low-melting fiber calcination volatilization has formed gas passage.
The cellular micropore gas passage of the inner formation of permeable-gas ceramics rod of the present utility model, be blown into the Argon Bubble diameter forming after argon gas little (water mould measure in the diameter < 1mm of bubble) and number of bubbles is many, closeness is large, improve that Argon Bubble paving is obtained, the ability of removal of inclusions, and permeable-gas ceramics rod burns till and has higher intensity through high temperature, scour resistance is strong, and then the overall corrosion stability that has extended brick cup, increase the service life.
The utility model is preferred, and described ladle upper nozzle brick cup body (1) adopts chrome corundum castable moulding by casting, refractoriness>=1790 DEG C of filling pipe end brick cup body, bulk density>=2.8g/cm
3, cold crushing strength>=60Mpa, AL
2o
3content>=93%, Cr
2o
3content is 2.0～5.0%.
The utility model is preferred, described ladle upper nozzle brick cup body comprises integrally formed convex platform and lower convex platform, the external diameter of lower convex platform is less than the external diameter of convex platform, described permeable-gas ceramics rod, air chamber box are all arranged in the convex platform of ladle upper nozzle brick cup body, one end of air inlet pipe is connected to a side of air chamber box, and the other end passes from a side of lower convex platform.
Further preferred, the convex platform profile of described filling pipe end brick cup body (1) is cylindrical, and lower convex platform profile is cylindrical, and the external diameter of lower convex platform is less than the external diameter of convex platform, the outer diameter D 5 of convex platform is 420～480mm, and the outer diameter D 4 of lower convex platform is 320～360mm.
The utility model is preferred, described permeable-gas ceramics rod (2) is cylinder, diameter d is 12～18mm, the height of permeable-gas ceramics rod is greater than the height of steel outlet hole, be less than the height of ladle upper nozzle brick cup body convex platform, the utility model is preferred, and permeable-gas ceramics rod height H is 320～380mm.
The utility model is preferred, and described permeable-gas ceramics rod (2) is 10～16, is annular and is evenly arranged, and circle diameter ￠ is 340～400mm.
The utility model is preferred, described slot be annular be evenly arranged in the upper end of air chamber box and with air chamber box internal communication, shape, the quantity of slot are corresponding with permeable-gas ceramics rod (2), and the annular diameter that slot forms is identical with the annular circle diameter ￠ that permeable-gas ceramics clavate becomes.
The utility model is preferred, and described air chamber box (3) entirety is annular, and air chamber box and slot thereof adopt can one-body molded, and the vertical section of air chamber box is rectangle, rectangle width a be 30～40mm, height b is 20～30mm.
The utility model is preferred, the longitudinal centre line of the longitudinal centre line of steel outlet hole and filling pipe end installing hole (5) point-blank, described steel outlet hole (6) comprises top truncated cone-shaped channel and lower cylindrical shape passage, the upper port diameter of round platform is greater than lower port diameter, preferably, the upper port diameter D1 of round platform is 160～200mm, lower port diameter D2 is 105～125mm, the height L1 of round platform is 120～160mm, the diameter of cylindrical channel is consistent with the lower port diameter of round platform, and cylinder height L2 is 35～45mm.
The utility model is preferred, and described filling pipe end installing hole (5) top is truncated cone-shaped, and bottom is cylindrical, the upper port of round platform is less than lower port diameter, the upper port diameter of round platform is greater than steel outlet hole lower cylindrical shape passage, and preferred, the upper port diameter D3 of round platform is 150～180mm.The fit dimension of other design of appearance and size according to filling pipe end filling pipe end installing hole.
Described air inlet pipe (4) is heat-resistance stainless steel pipe, and specification is 4 to be in charge of; Air inlet pipe (4) is connected with tube connector by rotation coupling.
The height m that filling pipe end brick cup body upper surface is stretched out on the top of the permeable-gas ceramics rod of ladle ventilating filling pipe end brick cup of the present utility model is 5～10mm, the height n that bottom extends in air chamber box is 5～10mm, described permeable-gas ceramics rod is cylinder, diameter d is 12～18mm, described permeable-gas ceramics rod is 10～16, being annular is evenly arranged, circle diameter ￠ is the designs such as 360～400mm, based on task of the present utility model: improve Argon Bubble closeness, improving Argon Bubble catches, the ability of removal of inclusions and avoid mouth of a river slag, the accurate positioning of permeable-gas ceramics rod is quick, improve the corrosion stability of ladle ventilating filling pipe end brick cup and regioselective, that those skilled in the art gropes to obtain through long-term experiment, wherein filling pipe end brick cup body upper surface is stretched out on the top of permeable-gas ceramics rod, bottom extends in air chamber box, in the time of filling pipe end brick cup moulding by casting, the height that stretch out the top of permeable-gas ceramics rod and bottom makes permeable-gas ceramics rod precise positioning, ensure its perpendicularity, the bottom of permeable-gas ceramics rod puts in air chamber box simultaneously, to ensure the even air inlet of ceramic rod, the argon gas that this design makes to enter in air chamber box becomes vertically upward through permeable-gas ceramics clavate, annular, continuous, the Argon Bubble air curtain barrier that closeness is large, improving Argon Bubble catches, the ability of removal of inclusions, control and solve ladle upper nozzle eddy current slag problem, not only the molten steel that is about to enter ladle upper nozzle is carried out to air purge, inclusion floating and removal are promoted, improve the cleanliness factor of molten steel, and reduce the molten steel amount in Casting Remnant, solved the permeable-gas ceramics rod precise positioning difficult problem during the cast of ladle ventilating filling pipe end brick cup is produced simultaneously, improve the qualification rate that manufactures a finished product of permeable-gas ceramics rod, permeable-gas ceramics rod makes Argon Bubble even on the one hand, continuously, intensive discharge, strengthen on the other hand the overall erosion-resisting characteristics of ladle upper nozzle brick cup, extend the service life of brick cup, by the qualification rate 75～80% that manufactures a finished product of brick cup at molten steel outlet in application documents 2 (Chinese patent literature CN202291395U), bring up on year-on-year basis 93～96%.
The upper port diameter D3 of filling pipe end installing hole (5) round platform of ladle ventilating filling pipe end brick cup of the present utility model is 150～180mm, the lower port diameter D2 of steel outlet hole round platform is 105～125mm, the upper port diameter D3 of filling pipe end installing hole (5) round platform is greater than the lower port diameter of steel outlet hole round platform, this design forms " recessed " shape step of a handstand on the top of filling pipe end installing hole, make in the situation that steel outlet hole (5) constantly expands warp, the top of filling pipe end is withstood by step, be not subjected to displacement, not only ensure the precise positioning of filling pipe end, and extend service life of ladle ventilating filling pipe end brick cup, apply on year-on-year basis in documents 2 (Chinese patent literature CN202291395U) more than the brick cup at molten steel outlet life-span improves 10 stoves on year-on-year basis.
The external diameter of the lower convex platform of ladle ventilating filling pipe end brick cup body of the present utility model is less than the external diameter of convex platform, the outer diameter D 5 of convex platform is 420～480mm, the outer diameter D 4 of lower convex platform is 320～360mm, based on task of the present utility model and regioselective, for the location that coordinates of the soleplate (8) of ladle ventilating filling pipe end brick cup body lower boss and slide gate mechanism installation, and filling pipe end brick cup body adopts corundum pouring material moulding by casting, ventilating filling pipe end brick cup body of the present utility model adopts corundum pouring material moulding by casting, high-temperature steel water erosion, wash away, erosion rate is than low, not only improve the service life of ventilating filling pipe end brick cup, and alleviate the direct erosion of molten steel to permeable-gas ceramics rod, wash away, ensure the stability of permeable-gas ceramics rod permeability.
The method of utilizing above-mentioned ladle ventilating filling pipe end brick cup control mouth of a river slag of the present utility model, comprises the steps:
1) when molten steel ladle liquid level drops to while being 500～1200mm apart from the height X of bottom of steel ladle, the air inlet pipe (4) of ladle ventilating filling pipe end brick cup starts to pass into argon gas, the argon pressure being blown into is controlled at 0.3～0.6MPa, argon flow amount is controlled at 150～400L/min, slightly stirs and is advisable with molten steel;
2) in the time that molten steel ladle liquid level is less than 200mm apart from the height X of bottom of steel ladle, the argon pressure being blown into is controlled at 0.2-0.3MPa, and argon flow amount is controlled at 15～30L/min, slightly stirs and is advisable with molten steel;
3) adopt artificial judgment method or ladle roughing slag detection method, judge when ladle occurs that lower slag or the lower quantity of slag reach setting value, close after ladle nozzle, stop being blown into argon gas.
The beneficial effects of the utility model are:
1) the utility model ladle ventilating filling pipe end brick cup, at molten steel ladle during in low liquid level, be blown into after argon gas, around ladle upper nozzle, form annular air curtain barrier, the molten steel that is about to enter filling pipe end is carried out to air purge, inclusion floating and removal are promoted, control and solved ladle upper nozzle eddy generation slag problem, not only improve the cleanliness factor of molten steel, and reduce the molten steel amount in Casting Remnant, than the Novel molten steel ladle nozzle pocket block in application documents 1 (Chinese patent literature CN201455253U), reduce on year-on-year basis molten steel amount in Casting Remnant more than 30%.
2) height that stretch out the top of permeable-gas ceramics rod of the present utility model and bottom makes permeable-gas ceramics rod precise positioning, ensure its perpendicularity, the bottom of permeable-gas ceramics rod puts in air chamber box simultaneously, to ensure the even air inlet of ceramic rod, the argon gas that makes to enter in air chamber box becomes vertically upward through permeable-gas ceramics clavate, annular, continuous, the Argon Bubble air curtain barrier that closeness is large, improving Argon Bubble catches, the ability of removal of inclusions, solve the permeable-gas ceramics rod precise positioning difficult problem during the cast of ladle ventilating filling pipe end brick cup is produced, improve the qualification rate that manufactures a finished product of permeable-gas ceramics rod, by the qualification rate 75～80% that manufactures a finished product of brick cup at molten steel outlet in application documents 2 (Chinese patent literature CN202291395U), bring up on year-on-year basis 93～96%.
3) the upper port diameter D3 of filling pipe end installing hole (5) round platform of ladle ventilating filling pipe end brick cup of the present utility model is greater than the lower port diameter of steel outlet hole round platform, form " recessed " shape step of a handstand on the top of filling pipe end installing hole, not only ensure the precise positioning that filling pipe end is installed, and extended service life of ladle ventilating filling pipe end brick cup, apply on year-on-year basis in documents 2 (Chinese patent literature CN202291395U) more than the brick cup at molten steel outlet life-span improves 10 heats on year-on-year basis.
Brief description of the drawings
Fig. 1 is ladle ventilating filling pipe end brick cup structure A-A profile in the utility model embodiment.
Fig. 2 is ladle ventilating filling pipe end brick cup structure top view in the utility model embodiment.
Fig. 3 is air chamber box structural representation in the utility model embodiment.
Fig. 4 is that in the utility model embodiment, ladle ventilating filling pipe end brick cup is installed and application schematic diagram.
In figure, 1, ladle upper nozzle brick cup body; 2, permeable-gas ceramics rod; 3, air chamber box; 4, air inlet pipe; 5, filling pipe end installing hole; 6, steel outlet hole; 7, corundum pouring material; 8, ladle sliding water gap mechanism is installed soleplate; 9, ladle permanent lining; 10, ladle working lining; 11, ladle slag line brick; 12, steel ladle edge castable; 13, slot.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the utility model is further illustrated, but be not limited only to this.
In embodiment, chrome corundum castable, chrome corundum castable, steel ladle edge castable are commercial product, conventional material.
Chrome corundum castable, corundum pouring material are purchased from Shanghai BaoMing fireresisting Materials Co., Ltd.
Steel ladle edge castable is purchased from Jiangsu Su Jia new material Co., Ltd.
Embodiment 1:
A kind of ladle ventilating filling pipe end brick cup, as Figure 1-Figure 4, comprise ladle upper nozzle brick cup body 1, permeable-gas ceramics rod 2, air chamber box 3, ladle upper nozzle brick cup body interior is provided with steel outlet hole 6 from top to bottom, filling pipe end installing hole 5, ladle upper nozzle brick cup body comprises integrally formed convex platform and lower convex platform, the external diameter of lower convex platform is less than the external diameter of convex platform, the convex platform profile of ladle upper nozzle brick cup body 1 is cylindrical, lower convex platform profile is cylindrical, the outer diameter D 4 of lower convex platform is less than the outer diameter D 5 of convex platform, the outer diameter D 5 of convex platform is 420mm, the outer diameter D 4 of lower convex platform is 320mm.Permeable-gas ceramics rod 2, air chamber box 3 are all arranged in the convex platform of ladle upper nozzle brick cup body 1, air chamber box 3 is positioned at the bottom of permeable-gas ceramics rod 2 and is communicated with permeable-gas ceramics rod 2, permeable-gas ceramics rod 2 is cylinder, diameter d is 16mm, the height of permeable-gas ceramics rod is greater than the height of steel outlet hole, the height that is less than ladle upper nozzle brick cup body convex platform, the utility model is preferred, and permeable-gas ceramics rod height H is 380mm.Permeable-gas ceramics rod 2 is 10, within one week outside steel outlet hole, is evenly arranged in ringwise in filling pipe end brick cup body, and circle diameter ￠ is 340mm.The upper surface of filling pipe end brick cup body is stretched out on the top of each permeable-gas ceramics rod (2), the height m that filling pipe end brick cup body upper surface is stretched out on the top of permeable-gas ceramics rod 2 is 5mm, on air chamber box, be provided with 10 slots for fixed ventilation ceramic rod, slot be annular be evenly arranged in the upper end of air chamber box and with air chamber box internal communication, the annular circle diameter ￠ of annular diameter and the permeable-gas ceramics clavate one-tenth that slot forms is identical.Shape, the position of slot are corresponding with permeable-gas ceramics rod, the bottom of each permeable-gas ceramics rod 2 extends in the slot of inlet plenum box, the degree of depth n that bottom extends in air chamber box is 5mm, air chamber box 3 is connected with air inlet pipe 4, one end of air inlet pipe is connected to a side of air chamber box, the other end passes from the sidepiece of lower convex platform, and air inlet pipe 4 is heat-resistance stainless steel pipe, and specification is 4 to be in charge of; Air inlet pipe 4 is connected with tube connector by rotation coupling.
In described permeable-gas ceramics rod, be evenly equipped with gas passage, adopting low-melting fiber is that raw material mechanical pressing becomes ceramic rod with fused alumina zirconia or zirconia, described low-melting fiber accounts for 0.1～0.5% of raw material total amount, and the micropore that then leaves tubulose after 1600 DEG C～1700 DEG C temperature lower calcinations make low-melting fiber calcination volatilization has formed gas passage.
Described ladle upper nozzle brick cup body 1, adopts chrome corundum castable moulding by casting, refractoriness>=1790 DEG C of filling pipe end brick cup body, bulk density>=2.8g/cm
3, cold crushing strength>=60Mpa, AL
2o
3content>=93%, Cr
2o
3content is 2.0～5.0%.
Described air chamber box 3 entirety are annular, and air chamber box 3 and slot thereof adopt can one-body molded, and the vertical section of air chamber box is rectangle, rectangle width a be 35mm, height b is 25mm.
The longitudinal centre line of the longitudinal centre line of steel outlet hole and filling pipe end installing hole 5 point-blank, described steel outlet hole 6 comprises top truncated cone-shaped channel and lower cylindrical shape passage, the upper port diameter of round platform is greater than lower port diameter, the upper port diameter D1 of round platform is 160mm, lower port diameter D2 is 105mm, the height L1 of round platform is 120mm, and the diameter of cylindrical channel is consistent with the lower port diameter of round platform, and cylinder height L2 is 35mm.Described filling pipe end installing hole 5 tops are truncated cone-shaped, and bottom is cylindrical, and the upper port of round platform is less than lower port diameter, and the upper port diameter of round platform is greater than steel outlet hole lower cylindrical shape passage, and the upper port diameter D3 of round platform is 150mm.The fit dimension of other design of appearance and size according to filling pipe end filling pipe end installing hole.
The method of utilizing above-mentioned ladle ventilating filling pipe end brick cup control mouth of a river slag, comprises the steps:
1) when molten steel ladle position drops to while being 500mm apart from the height X of bottom of steel ladle, the air inlet pipe 4 of ladle ventilating filling pipe end brick cup starts to pass into argon gas, the argon pressure being blown into is controlled at 0.3～0.4MPa, and argon flow amount is controlled at 150～200L/min, slightly stirs and is advisable with molten steel;
2) in the time that molten steel ladle liquid level is less than 200mm apart from the height X of bottom of steel ladle, described in the argon pressure that is blown into be controlled at 0.2-0.25MPa, argon flow amount is controlled at 15～20L/min, slightly stirs and is advisable with molten steel;
3) when adopting artificial judgment method or ladle roughing slag detection method, judge when ladle occurs that lower slag or the lower quantity of slag reach setting value, close after ladle nozzle, stop being blown into argon gas.
Embodiment 2,
Ladle ventilating filling pipe end brick cup as described in Example 1, difference is:
The outer diameter D 5 of the convex platform of ladle upper nozzle brick cup body 1 is 480mm, and the outer diameter D 4 of lower convex platform is 360mm.Permeable-gas ceramics rod 2 diameter d are 12mm, and the height of permeable-gas ceramics rod is greater than the height of steel outlet hole, is less than the height of ladle upper nozzle brick cup body convex platform, and permeable-gas ceramics rod height H is 320mm.Permeable-gas ceramics rod 2 is 16, within one week outside steel outlet hole, is evenly arranged in ringwise in filling pipe end brick cup body, and circle diameter ￠ is 400mm.The height m that filling pipe end brick cup body upper surface is stretched out on the top of permeable-gas ceramics rod 2 is 10mm, on air chamber box, be provided with 16 slots for fixed ventilation ceramic rod, shape, the position of slot are corresponding with permeable-gas ceramics rod, and the degree of depth n that the bottom of each permeable-gas ceramics rod 2 extends in air chamber box is 8mm.
The vertical section of air chamber box 3 is rectangle, rectangle width a be 30mm, height b be 20mm.
The upper port diameter D1 of described steel outlet hole 6 top round platforms is 200mm, and lower port diameter D2 is 125mm, and the height L1 of round platform is 160mm, and the diameter of cylindrical channel is consistent with the lower port diameter of round platform, and cylinder height L2 is 45mm.Filling pipe end installing hole 5 tops are truncated cone-shaped, and bottom is cylindrical, and the upper port of round platform is less than lower port diameter, and the upper port diameter of round platform is greater than steel outlet hole lower cylindrical shape passage, and the upper port diameter D3 of round platform is 180mm.
Embodiment 3,
Ladle ventilating filling pipe end brick cup as described in Example 1, difference is:
The outer diameter D 5 of the convex platform of ladle upper nozzle brick cup body 1 is 460mm, and the outer diameter D 4 of lower convex platform is 340mm.Permeable-gas ceramics rod 2 diameter d are 18mm, and the height of permeable-gas ceramics rod is greater than the height of steel outlet hole, is less than the height of ladle upper nozzle brick cup body convex platform, and permeable-gas ceramics rod height H is 360mm.Permeable-gas ceramics rod 2 is 12, within one week outside steel outlet hole, is evenly arranged in ringwise in filling pipe end brick cup body, and circle diameter ￠ is 360mm.The height m that filling pipe end brick cup body upper surface is stretched out on the top of permeable-gas ceramics rod 2 is 6mm, on air chamber box, be provided with 12 slots for fixed ventilation ceramic rod, shape, the position of slot are corresponding with permeable-gas ceramics rod, and the degree of depth n that the bottom of each permeable-gas ceramics rod 2 extends in air chamber box is 10mm.
The vertical section of air chamber box 3 is rectangle, rectangle width a be 40mm, height b be 30mm.
The upper port diameter D1 of described steel outlet hole 6 top round platforms is 180mm, and lower port diameter D2 is 115mm, and the height L1 of round platform is 140mm, and the diameter of cylindrical channel is consistent with the lower port diameter of round platform, and cylinder height L2 is 40mm.Filling pipe end installing hole 5 tops are truncated cone-shaped, and bottom is cylindrical, and the upper port of round platform is less than lower port diameter, and the upper port diameter of round platform is greater than steel outlet hole lower cylindrical shape passage, and the upper port diameter D3 of round platform is 165mm.
Experimental example
Comparative example 1: the Chinese patent literature CN201455253U (patent No.: 200920016943.8) disclose a kind of a kind of Novel molten steel ladle nozzle pocket block using in steelmaking process
Comparative example 2: the Chinese patent literature CN202239612U (patent No.: 201120338035.8) disclosed a kind of brick cup at molten steel outlet.
By the qualification rate contrast that manufactures a finished product of the pocket block of the ladle ventilating filling pipe end brick cup of the utility model embodiment 1-3 and comparative example 1-2, when pocket block of the present utility model is produced, permeable-gas ceramics rod is more easily located, quick and easy for installation, improve finished product rate
Ladle ventilating filling pipe end brick cup of the present utility model manufacture a finished product qualification rate on year-on-year basis comparative example 2 improve more than 20%, only reduce approximately 1% than comparative example 1, but adopt the ladle ventilating filling pipe end brick cup of the utility model embodiment 1-3 and the pocket block of 1-3 to be applied in the steel mill 130tLF of the steel enterprise Yin Shan shaped steel Co., Ltd refining ladle of Laiwu, the molten steel that is about to enter filling pipe end is carried out to air purge, inclusion floating and removal are promoted, fundamentally solve the technical barrier of ladle upper nozzle eddy generation slag, not only improve the cleanliness factor of molten steel, and reduce the molten steel amount in Casting Remnant, under equal process conditions, the ladle ventilating filling pipe end brick cup of application the utility model embodiment 1-3, molten steel amount in Casting Remnant reduces 35.7% on year-on-year basis than comparative example 1, reduce on year-on-year basis 12.9% than comparative example 2, the pocket block life-span is improved 11 heats on year-on-year basis than comparative example 2, 12, 13 heats, in the LHG2 steel of producing, field trash still less, conticaster production Ultra-low carbon DDQ level cold-rolled strip, in LHG2 steel, the ratio of Control and Inclusion Removal below 1.5 grades is by 27.8% bringing up to more than 91.62% of applying comparative example 1, comparing result sees the following form 1.Table 1
Claims (1)
1. the ladle ventilating filling pipe end brick cup that yield rate is high, comprise ladle upper nozzle brick cup body (1), permeable-gas ceramics rod and air chamber box, ladle upper nozzle brick cup body interior is provided with steel outlet hole (6) from top to bottom, filling pipe end installing hole (5), described permeable-gas ceramics rod, air chamber box is all arranged in ladle upper nozzle brick cup body, described air chamber box is positioned at the bottom of permeable-gas ceramics rod and is communicated with permeable-gas ceramics rod, air chamber box is connected with air inlet pipe (4), one end of air inlet pipe is connected to a side of air chamber box, the other end passes from ladle upper nozzle brick cup body, it is characterized in that, in described permeable-gas ceramics rod, be evenly equipped with micropore gas passage, permeable-gas ceramics rod (2) is multiple, within one week outside steel outlet hole, be evenly arranged in ringwise in filling pipe end brick cup body, the upper surface of filling pipe end brick cup body is stretched out on the top of each permeable-gas ceramics rod (2), on air chamber box, be provided with the multiple slots for fixed ventilation ceramic rod relative with permeable-gas ceramics rod, the bottom of each permeable-gas ceramics rod (2) extends in the slot of inlet plenum box.
2
.the ladle ventilating filling pipe end brick cup high according to the yield rate described in claim 1, is characterized in that, the height m that filling pipe end brick cup body upper surface is stretched out on the top of permeable-gas ceramics rod (2) is 5～10mm, and the degree of depth n that bottom extends in air chamber box is 5～10mm.
3
.the ladle ventilating filling pipe end brick cup high according to the yield rate described in claim 1, it is characterized in that, described ladle upper nozzle brick cup body comprises integrally formed convex platform and lower convex platform, the external diameter of lower convex platform is less than the external diameter of convex platform, described permeable-gas ceramics rod, air chamber box are all arranged in the convex platform of ladle upper nozzle brick cup body, one end of air inlet pipe is connected to a side of air chamber box, and the other end passes from a side of lower convex platform.
4
.the ladle ventilating filling pipe end brick cup high according to the yield rate described in claim 3, it is characterized in that, the convex platform profile of described filling pipe end brick cup body (1) is cylindrical, lower convex platform profile is cylindrical, the external diameter of lower convex platform is less than the external diameter of convex platform, the outer diameter D 5 of convex platform is 420～480mm, and the outer diameter D 4 of lower convex platform is 320～360mm.
5
.the ladle ventilating filling pipe end brick cup high according to the yield rate described in claim 1, it is characterized in that, described permeable-gas ceramics rod (2) is cylinder, diameter d is 12～18mm, the height of permeable-gas ceramics rod is greater than the height of steel outlet hole, be less than the height of ladle upper nozzle brick cup body convex platform, permeable-gas ceramics rod height H is 320～380mm.
6
.the ladle ventilating filling pipe end brick cup high according to the yield rate described in claim 1, is characterized in that, described permeable-gas ceramics rod (2) is 10～16, is annular and is evenly arranged, and circle diameter ￠ is 340～400mm.
7
.the ladle ventilating filling pipe end brick cup high according to the yield rate described in claim 6, it is characterized in that, described slot be annular be evenly arranged in the upper end of air chamber box and with air chamber box internal communication, shape, the quantity of slot are corresponding with permeable-gas ceramics rod (2), and the annular diameter that slot forms is identical with the annular circle diameter ￠ that permeable-gas ceramics clavate becomes.
8
.the ladle ventilating filling pipe end brick cup high according to the yield rate described in claim 1, it is characterized in that, described air chamber box (3) entirety is annular, air chamber box and slot thereof adopt can one-body molded, the vertical section of air chamber box is rectangle, rectangle width a be 30～40mm, height b be 20～30mm.
9
.the ladle ventilating filling pipe end brick cup high according to the yield rate described in claim 1, it is characterized in that, the longitudinal centre line of the longitudinal centre line of steel outlet hole and filling pipe end installing hole (5) point-blank, described steel outlet hole (6) comprises top truncated cone-shaped channel and lower cylindrical shape passage, the upper port diameter of round platform is greater than lower port diameter, the upper port diameter D1 of round platform is 160～200mm, lower port diameter D2 is 105～125mm, the height L1 of round platform is 120～160mm, the diameter of cylindrical channel is consistent with the lower port diameter of round platform, cylinder height L2 is 35～45mm.
10
.the ladle ventilating filling pipe end brick cup high according to the yield rate described in claim 1, it is characterized in that, described filling pipe end installing hole (5) top is truncated cone-shaped, bottom is cylindrical, the upper port of round platform is less than lower port diameter, the upper port diameter of round platform is greater than steel outlet hole lower cylindrical shape passage, and the upper port diameter D3 of round platform is 150～180mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420326295.7U CN203992367U (en) | 2014-06-18 | 2014-06-18 | The ladle ventilating filling pipe end brick cup that a kind of yield rate is high |
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| CN201420326295.7U CN203992367U (en) | 2014-06-18 | 2014-06-18 | The ladle ventilating filling pipe end brick cup that a kind of yield rate is high |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108273987A (en) * | 2018-04-09 | 2018-07-13 | 东北大学 | A kind of ladle ventilating filling pipe end brick cup and its method for controlling ladle roughing slag |
| CN110961614A (en) * | 2019-12-04 | 2020-04-07 | 莱芜钢铁集团新兴液气有限公司 | Brick cup for tundish and continuous casting tundish with same |
-
2014
- 2014-06-18 CN CN201420326295.7U patent/CN203992367U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108273987A (en) * | 2018-04-09 | 2018-07-13 | 东北大学 | A kind of ladle ventilating filling pipe end brick cup and its method for controlling ladle roughing slag |
| CN108273987B (en) * | 2018-04-09 | 2020-05-19 | 东北大学 | Ladle air-permeable upper nozzle pocket brick and method for controlling ladle slag discharging |
| CN110961614A (en) * | 2019-12-04 | 2020-04-07 | 莱芜钢铁集团新兴液气有限公司 | Brick cup for tundish and continuous casting tundish with same |
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