CN103586451A - Brake type immersion water gap for volume production - Google Patents
Brake type immersion water gap for volume production Download PDFInfo
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- CN103586451A CN103586451A CN201310535294.3A CN201310535294A CN103586451A CN 103586451 A CN103586451 A CN 103586451A CN 201310535294 A CN201310535294 A CN 201310535294A CN 103586451 A CN103586451 A CN 103586451A
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Abstract
The invention relates to a brake type immersion water gap for volume production. The brake type immersion water gap comprises a water gap side wall, a bottom and an inner hole, wherein the bottom and the side wall are formed integrally, the inner hole with an opening in the top end is formed by defining the side wall and the bottom, the inner hole is evenly shrunk from the upper caliber to the lower caliber, a plurality of evenly-distributed first flow pass holes are formed in the circumferential direction of the side wall in the tangential direction of the inner hole, and inlets of the first flow pass holes are communicated with the inner hole. Initial kinetic energy and the specific motion trail of molten steel are utilized for acting on existing molten steel in a crystallizer, so that the mode of a molten steel flow field is changed, and compared with electromagnetic brake, the brake type saves more energy. According to the brake type immersion water gap for the volume production, in the continuous casting process, if the position in the perpendicular direction is inappropriate, immersion water gaps of different types can be replaced in an on-line mode, or the height of a middle tank is fine adjusted or the pulling speed of casting blanks is fine adjusted, and optimization of the brake type immersion water gap on braking of flowing of the molten steel in the crystallizer is achieved.
Description
Technical field
The present invention relates to a kind of soaking water gap, relate in particular to a kind of brake type soaking water gap for volume production.
Background technology
At present, the crystallizer submersed nozzle that side, square, circle and slab (containing sheet billet) conticaster adopts, what generally adopt is the Straight with pod apertures, according to continuous casting section configuration or single hole or porous; For meeting the mobile reasonability of molten steel in mold, when pass angle design, be designed with in the vertical direction certain angle; But these mouths of a river when design all only the flow field in crystallizer rationalize as far as possible, and do not consider because of the impact of M-EMS, to cause the possibility of slag in casting process, thereby cause continuous casting billet quality unstable.
Along with efficiently, high-quality, environmental protection, the exploitation of energy-saving casting machine, high pulling rate must strengthen flow and the flow velocity of steel flow thigh in crystallizer, in casting blank solidification process, the impact depth of molten steel in liquid core and the unstability of meniscus place molten steel hump height will have been increased, even if adopt the traditional type submersed nozzle after optimizing, also may not necessarily there be sufficient improvement or optimization to slab quality, in any case, under existence conditions, no matter adopt the mouth of a river of which kind of traditional approach or structure, keep away equally the unavoidable stirring to crystallizer protecting residue liquid slag layer to crystallizer top backflow molten steel because of electromagnetic agitation, certainly will cause the undulating value of mold liquid level to raise, cause slag and finally affect slab quality, simultaneously, also very unfavorable to the floating of field trash in molten steel in mold.Therefore, do not increasing under the prerequisite of equipment investment, it is limited depending merely on that current technology taps the latent power.Requirement slab quality classification standard being improved constantly for adapting to industry, studies and applies novel submersed nozzle, necessary.
Since electromagnetic agitating technology is applied to continuous casting process, for a new platform has been found in the lifting of slab quality, therefore, in the integral body of modern conticaster forms, nearly all join figurate electromagnetic stirring system, and the application achievements of up-to-date electromagnetic agitating technology is exactly the employing of electromagnetic brake technology in crystallizer.
Fluid in crystallizer is under the percussion of beam, is separated into upper and lower two recirculating zones after running into crystallizer wall.Upwards backflowing along crystallizer sidewall near crystallizer molten steel surface in upper recirculating zone, then flows to mouth of a river direction; Lower recirculating zone stream thigh is after impacting crystallizer sidewall, effect due to inertia and gravity, after impacting certain depth downwards, be separated into again two parts, a part is solidified behind " coral " interface running into, change its flow direction to crystallizer center flow starts back near the mouth of a river, another part joins process of setting and flowing downward; And this part of molten steel is in the process of flowing downward, may be separated into again two strands, even more, behind M-EMS region, owing to being subject to the effect of electromagnetic force, slowing down or decay it downwards or flow to the energy at center, until molten steel slowly solidifies, flowing approaches while stopping, reflux course just fades away.In this flow process, crystallizer sidewall is impacted in the be hit effect of power of stream thigh, has a strong impact on the uniformity growth of crystallizer sidewall base shell and the size of upper and lower back-flow velocity.Upper back-flow velocity increase directly affects again the steady degree of mold liquid level and the size that the mouth of a river two side refluxs interactions produce whirlpool.
Because the refluxed effect of molten steel of mold liquid level produces fluctuation, too little heat transfer and the fusing that certainly will affect covering slag of fluctuate, does not become the molten slag layer of stablizing and having adequate thickness, thereby affects the ability of lubricant effect and the dross inclusion adsorption of slag film; And the too large field trash that can cause covering slag or just be adsorbed of fluctuation is involved in steel, affect slab quality.Meanwhile, due near mutual collision and the extruding of two recirculating zones mouth of a river, form whirlpool, only have the faint turn producing for enough hour when swirling flow, just can not affect covering slag and be involved in strand; But when turn is serious, can produce larger funnel whirlpool, make the covering slag on molten steel face directly be rolled onto exit, the mouth of a river, in casting process, molten steel be caused to secondary pollution, this will have a strong impact on the cleanliness factor of molten steel.
Summary of the invention
The technical problem to be solved in the present invention is: the energy waste causing in order to solve electromagnetic braking, and the nonadjustable problem after installing, the invention provides a kind of brake type soaking water gap for volume production and solve the problems referred to above.
The technical solution adopted for the present invention to solve the technical problems is: a kind of brake type soaking water gap for volume production, the endoporus of the top end opening that comprises mouth of a river sidewall, surrounds with the bottom of sidewall one and sidewall and bottom, the upper bore of described endoporus evenly dwindles to lower bore, on the sidewall of described endoporus tangential direction, circumferentially offer a plurality of uniform first flow holes, the entrance in described first flow hole is communicated with endoporus.By first flow hole, coming increases an external rotation brake power to crystallizer top molten steel, moment forces opposite direction with electromagnetic agitation generation in former crystallizer, with the original revolving force of damping, can make mold liquid level more tend to be steady, do not allow the field trash having been adsorbed by crystallizer protecting residue return to molten steel, greatly improve slab quality; The upper bore of endoporus evenly dwindles to lower bore, recirculating zone is diminished, impact depth also diminishes simultaneously, because molten steel just has certain rotation amount from endoporus goes out stream, after clashing into leptoprosopy, start to be further strengthened along crystallizer screw, after entering leptoprosopy near zone, rotary speed is maximum, suppresses to greatest extent eddy current one time; Meanwhile, under outside centrifugal action, heart portion liquid is thrown out of and scrubs internal surface of crystallizer, under crystallizer recirculating zone reduce and rotatablely moving of liquid is conducive to the floating of field trash, reduce strand and be mingled with.
A kind of embodiment: described first flow hole has 4, cross section is oval, and 4 first flow holes are circumferentially uniform along the same level cross section of endoporus, and 4 first flow holes are all downward-sloping.
In order to produce better effect, the exit major axis in described first flow hole is greater than the radius of endoporus and is less than the diameter of endoporus.
4 downward-sloping angles in first flow hole are 20 °-25 °.According to experiment, draw, the downward-sloping angle in first flow of the present invention hole is arranged on this scope, and effect is best.
Further preferably, 4 downward-sloping angles in first flow hole are 25 °.
4 first flow holes all have makes stream strand produce the first oblique angle of equidirectional rotation.The exit in first flow hole is equivalent to have an enlarging, and enlarging is banking, the first oblique angle is just arranged on the one side in exit, and guiding stream strand is to stream on one side.
Further, as preferably, the first described oblique angle is 45 °.
Another kind of embodiment: described first flow hole has 4, wherein 2 is sprue hole, other 2 is secondary channels hole, 2 sprue holes are positioned on same level line and are oppositely arranged, 2 secondary channels holes are positioned at top, 2 sprue holes and are also oppositely arranged in the same horizontal line, vertical setting mutually between two sprue holes and two secondary channels holes, 2 sprue holes are downward-sloping, and 2 secondary channels holes are inclined upwardly.Sprue hole and secondary channels hole are divided into two-layer up and down.
Further, specifically, described sprue hole and cross section, secondary channels hole are ellipse, and described sprue hole major axis is greater than the radius of endoporus and is less than the diameter of endoporus, and described secondary channels hole major axis is not more than the radius of endoporus.
The downward-sloping angle in described sprue hole is 30 °-35 °.According to experiment, draw, the downward-sloping angle in first flow of the present invention hole is arranged on this scope, and effect is best.
Further, as preferably, the downward-sloping angle in described sprue hole is 32 °.
Having for making to flow strand second oblique angle of generation rotation of the exit in described sprue hole, having for making to flow thigh of the exit in described secondary channels hole produces the 3rd oblique angle rotating.The exit in sprue hole and secondary channels hole is equivalent to have an enlarging, and enlarging is banking, the second oblique angle is just arranged on the one side at sprue hole exits place, and guiding stream strand is to stream on one side, the 3rd oblique angle is arranged on the one side at secondary channels hole exits place, and guiding stream plume goes out.
In order to be better effective, the direction of rotation that described sprue hole and secondary channels hole produce stream thigh is contrary.
Further, specifically, the angle at the second described oblique angle is 45 °, and the angle at the 3rd described oblique angle is 39 °.
In order to produce the needs of upper volume production, above-mentioned two kinds of embodiments all can offered the second runner hole in bottom, described bottom also offers the circle concentric with endoporus the second runner hole, the diameter in the second described runner hole is less than the diameter of endoporus, and the entrance in the second described runner hole is communicated with endoporus.
Described endoporus is inverted frustum, and tapering is 0.8 °-1.6 °.
The invention has the beneficial effects as follows,
1) can derive fast molten steel overheat, stablize the consumption of covering slag, impel and form uniform slag film, guarantee that lubricated index is relatively stable; For the molten steel part of returning to dirty thigh, be braked after burst cutting of formula mouth of a river stream, its rising kinetic energy of decaying, slowly arrives near mold liquid level it, thereby makes liquid level fluctuation of crystallizer stable;
2) the specific version of this brake type soaking water gap, because stream strand flows out from first flow hole with certain angle, can be with certain first kinetic energy in ferrostatic pressure situation, can automatically produce screw type rotation, direction is contrary with the direction of rotation of M-EMS upper steel water generates, to eliminate it, produce vortex kinetic energy, reach the object of stablizing liquid level;
3) by the research in crystallizer flow field is shown, mold liquid level is because backflow effect produces fluctuation, affect steel inclusion dissolves, spreads in covering slag, and cause crystallizer meniscus slag, simultaneously, due to the interaction of Liang Ge recirculating zone, both sides, the mouth of a river, near the mouth of a river, be easy to again produce swirling flow, swirling flow hour only produces faint turn on liquid level; And when mouth of a river design is unreasonable or insertion depth is improper, turn is serious.Because the upwelling thigh decay distance of upper whirlpool is shorter, impingement flow is larger on the impact of mold liquid level, cause liquid level fluctuation of crystallizer large and near the mouth of a river, produce larger infundibulate vortex, this will cause slag aborning, have a strong impact on the cleanliness factor of strand, and adopt this problem of the present invention substantially can eliminate;
4) adopt the present invention very large on the macrostructure of strand and depth of chatter mark impact, from the situation of test, use brake type soaking water gap, the inner equiax crystal area of strand obviously adopts the mouth of a river of traditional approach to get well;
5) in process of the test, the strand comprehensive quality of producing during than 1.8m/min when pulling rate is controlled at 2.0m/min is good, proves that original design principle is correct, reliable;
6), in high-carbon steel continuous casting process, for improving strand Central Carbon Segregation, there is certain help;
7) brake area of electromagnetic brake is non-adjustable, and adopts brake type function submersed nozzle suitably to adjust brake type soaking water gap form according to different process control conditions, to increase its adjusting range;
8) stable crystalline device molten steel face and meniscus shape, stable and optimize the floating path of field trash, improve slab quality, especially in conticaster vibrational system also not before upgrading or transformation, this mouth of a river can fully demonstrate the feature of improving casting billet surface oscillation mark;
9) can realize molten steel braking, substitute electromagnetic brake, meanwhile, less investment, effective, substantially do not increase expense, economize on electricity, non-maintaining, freedom from repairs;
10) this mouth of a river is compared with the conventional mouth of a river, only disposablely in process drops into part mould costs of manufacture more, and the service life at the mouth of a river with traditional suitable, ton steel cost can increase hardly;
11) in modern continuous casting process operating process, rely on present capital and technical conditions, courageously carry out technological innovation, use brake type soaking water gap, for improving slab quality, Improving The Quality of Products grade, the in the situation that of relatively weak in existing market, development prospect is fine.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
The strand low power pictorial diagram at several traditional mouths of a river that Fig. 1, Fig. 2, Fig. 3 and Fig. 4 adopt,
Fig. 5, Fig. 6, Fig. 7 and Fig. 8 adopt the present invention to be used for the strand low power pictorial diagram of the brake type soaking water gap of volume production,
Fig. 9 is strand oscillation mark contrast situation map, and wherein scheming a is the strand not adopting after the present invention, and figure b is that employing is of the present invention for the strand after the brake type soaking water gap of volume production,
Figure 10 be the present invention for the front view of the embodiment 1 of the brake type soaking water gap of volume production,
Figure 11 be the present invention for the top view of the embodiment 1 of the brake type soaking water gap of volume production,
Figure 12 is the cutaway view of A-A in Figure 10,
Figure 13 be the present invention for the front view of the embodiment 2 of the brake type soaking water gap of volume production,
Figure 14 be the present invention for the top view of the embodiment 2 of the brake type soaking water gap of volume production,
Figure 15 is the cutaway view of A-A in Figure 13,
Figure 16 be the present invention for the front view of the embodiment 3 of the brake type soaking water gap of volume production,
Figure 17 be the present invention for the top view of the embodiment 3 of the brake type soaking water gap of volume production,
Figure 18 is the cutaway view of A-A in Figure 16,
Figure 19 is the cutaway view of B-B in Figure 16.
In figure 1, sidewall, 2, bottom, 3, endoporus, 4, first flow hole, the 5, second runner hole, 6, sprue hole, 7, secondary channels hole.
The specific embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, basic structure of the present invention is only described in a schematic way, so it only show the formation relevant with the present invention.
Embodiment 1:
As shown in Figure 10-12, the present invention is for the brake type soaking water gap of volume production, comprise mouth of a river sidewall 1, the endoporus 3 of the top end opening surrounding with the bottom 2 of sidewall 1 one and sidewall 1 and bottom 2, the upper bore of endoporus 3 evenly dwindles to lower bore, on the sidewall 1 of endoporus 3 tangential directions, circumferentially offer a plurality of uniform first flow holes 4, the entrance in first flow hole 4 is communicated with endoporus 3, first flow hole 4 has 4, cross section is oval, 4 first flow holes 4 are circumferentially uniform along the same level cross section of endoporus 3, 4 first flow holes 4 are all downward-sloping, the exit major axis in first flow hole 4 is greater than the radius of endoporus 3 and is less than the diameter of endoporus 3, 4 downward-sloping angles in first flow hole 4 are 20 °-25 °, being preferably 4 downward-sloping angles in first flow hole 4 is 25 °, 4 first flow holes 4 all have makes stream strand produce the first oblique angle of equidirectional rotation, the first oblique angle is 45 °, endoporus 3 is inverted frustum, tapering is 0.8 °-1.6 °.
Embodiment 2: as shown in Figure 13-15, the present invention is for the brake type soaking water gap of volume production, comprise mouth of a river sidewall 1, the endoporus 3 of the top end opening surrounding with the bottom 2 of sidewall 1 one and sidewall 1 and bottom 2, the upper bore of endoporus 3 evenly dwindles to lower bore, on the sidewall 1 of endoporus 3 tangential directions, circumferentially offer a plurality of uniform first flow holes 4, the entrance in first flow hole 4 is communicated with endoporus 3, first flow hole 4 has 4, cross section is oval, 4 first flow holes 4 are circumferentially uniform along the same level cross section of endoporus 3, 4 first flow holes 4 are all downward-sloping, the exit major axis in first flow hole 4 is greater than the radius of endoporus 3 and is less than the diameter of endoporus 3, 4 downward-sloping angles in first flow hole 4 are 20 °-25 °, being preferably 4 downward-sloping angles in first flow hole 4 is 25 °, 4 first flow holes 4 all have makes stream strand produce the first oblique angle of equidirectional rotation, the first oblique angle is 45 °, bottom 2 also offers the cylinder concentric with endoporus 3 the second runner hole 5, the diameter in the second runner hole 5 is less than the diameter of endoporus 3, the entrance in the second runner hole 5 is communicated with endoporus 3, endoporus 3 is inverted frustum, tapering is 0.8 °-1.6 °.
Embodiment 3: as shown in Figure 16-19, the present invention is for the brake type soaking water gap of volume production, comprise mouth of a river sidewall 1, the endoporus 3 of the top end opening surrounding with the bottom 2 of sidewall 1 one and sidewall 1 and bottom 2, the upper bore of endoporus 3 evenly dwindles to lower bore, on the sidewall 1 of endoporus 3 tangential directions, circumferentially offer a plurality of uniform first flow holes 4, the entrance in first flow hole 4 is communicated with endoporus 3, first flow hole 4 has 4, wherein 2 is sprue hole 6, other 2 is secondary channels hole 7, 2 sprue holes 6 are positioned on same level line and are oppositely arranged, 2 secondary channels holes 7 are positioned at 6 tops, 2 sprue holes and are also oppositely arranged in the same horizontal line, vertical setting mutually between two sprue holes 6 and two secondary channels holes 7, 2 sprue holes 6 are downward-sloping, 2 secondary channels holes 7 are inclined upwardly, sprue hole 6 and 7 cross sections, secondary channels hole are ellipse, sprue hole 6 major axis are greater than the radius of endoporus 3 and are less than the diameter of endoporus 3, secondary channels hole 7 major axis are not more than the radius of endoporus 3, the downward-sloping angle in sprue hole 6 is 30 °-35 °, the downward-sloping angle in sprue hole 6 is 32 °, having for making stream strand produce the second oblique angle of rotation of the exit in sprue hole 6, having for making stream strand produce the 3rd oblique angle of rotation of the exit in secondary channels hole 7, the direction of rotation that sprue hole 6 and secondary channels hole 7 produce stream thigh is contrary, the angle at the second oblique angle is 45 °, the angle at the 3rd oblique angle is 39 °, bottom 2 also offers the cylinder concentric with endoporus 3 the second runner hole 5, the diameter in the second runner hole 5 is less than the diameter of endoporus 3, the entrance in the second runner hole 5 is communicated with endoporus 3, endoporus 3 is inverted frustum, tapering is 0.8 °-1.6 °.
The design principle of brake type submersed nozzle is similar to the application principle of electromagnetic braking, but also has its feature separately:
1) electromagnetic braking is to utilize electromagnetic action, and the molten steel in crystallizer is applied to external magnetic field, thereby affects the flow trace of molten steel; And brake type soaking water gap is first kinetic energy and the interior existing molten steel of special exercise track effect crystallizer that utilizes molten steel self, thereby the mode of change molten steel flow field belongs to energy saver mode;
2) electromagnetic braking is the molten steel in crystallizer to be applied to the magnetic field of a horizontal mostly; And the stream thigh of brake type soaking water gap is with certain (or upwards) downwards flows at angles, thereby respectively there is the component turning effort of a horizontal and vertical direction in molten steel, be conducive to the floating condition that molten steel in mold meets field trash under function composite by electromagnetic stirring, simultaneously, also liquid fluctuating value that can stable crystalline device, the melting rate of steady heat transfer and covering slag;
3) once electromagnetic braking equipment install, the braking action region to molten steel in mold, generally no longer adjustable in process of production; And brake type soaking water gap, if in casting process, find that vertical direction position is improper, can, by changing online multi-form submersed nozzle or fine setting pans height or fine setting Casting speed, realize the optimization that brake type soaking water gap flows and brakes molten steel in mold;
The invention principle that is used for the brake type soaking water gap of volume production:
The present invention, for the brake type soaking water gap of volume production, in use no doubt has its many features, but when design, must meet its design principle.
According to one's analysis, the most outward appearance of strand and blemish are to form in the improper process of setting of molten steel in crystallizer, and the process of setting of molten steel in crystallizer, very important position is exactly the meniscus place at crystallizer, so, when this brake type soaking water gap of design, necessarily can not ignore the feature of crystallizer flow field on meniscus shape impact.
1) impact of mouth of a river insertion depth
The principle of brake type soaking water gap insertion depth, the main factor of considering is: main flow, when running into crystallizer sidewall, will be mapped to solid slag diaphragm area scarcely downwards, meanwhile, takes again liquid level fluctuation of crystallizer into account in a rational fluctuation range value.Therefore, in continuous casting production process, for different steel grades and pulling rate, section, optimize selective freezing device covering slag, stablize its lubricated index.And be not directly mapped to meniscus hump place to the jet thigh of upper reaches thigh, and should penetrate in meniscus and melt cinder face flex point by near liquid level central side.Generally, improve Casting speed and the mouth of a river can be inserted more deeply, the needs that raise to adapt to the stable and lubricated index of crystallizer meniscus, but prerequisite is in the time of must guaranteeing out crystallizer, to have enough shell thicknesses.
2) by detecting maximum wave height value, optimize the mouth of a river
For different process conditions and steel grade requirement, the crystallizer submersed nozzle form that choice for use is good, should make molten steel in mold liquid level mean wave height value (that is: crest value-trough value) less, and undulating value is relatively stable and maximum wave height value is reasonable.Be intended to the burn-off rate of stable meniscus place hump height and covering slag, to stablize strand depth of chatter mark, improve slab quality.
3) crystallizer sidewall surge is analyzed
Under different pulling rates and mouth of a river insertion depth condition, molten steel is different to the surge extreme difference of crystallizer sidewall.Simultaneously, while adopting the mouth of a river of different structure form, stream thigh is also different to the maximum impact pressure point of crystallizer sidewall, and the maximum of surge and the difference of minimum of a value are less, just illustrate that mouth of a river stream thigh is less and stable to the impulsive force of base shell in crystallizer, be conducive to the growth of base shell.
4) optimize mouth of a river parameter
Mouth of a river stream thigh after optimization, to the uniformity of crystallizer sidewall impact and better to the effect situation of molten steel face, is conducive to the floating of base hull shape one-tenth and steel inclusion, and the fluctuation that the effect of mold liquid level is produced is also less, thereby can improve slab quality.For same crystallizer, the effect of using the difform mouth of a river to obtain with pulling rate is different, and by optimizing, selection can meet need of production and be conducive to improve the submersed nozzle form of slab quality.
Example explanation:
1), in producing SWRH82B continuous casting 150 square casting blanks processes, on corresponding test stream, do the test of brake type soaking water gap respectively.Now by contrast test condition and the strand low power sample situation of brake type soaking water gap are added up in Table 1 for the second time.
Table 1 contrast test condition and strand low power sample situation
2) low power contrast situation in kind, is shown in accompanying drawing 1-Fig. 8.
Under identical process control condition, adopt multi-form submersed nozzle, the quality condition showing in strand low power sample is also different.The strand low power pictorial diagram at several traditional mouths of a river that Fig. 1, Fig. 2, Fig. 3 and Fig. 4 adopt, Fig. 5, Fig. 6, Fig. 7 and Fig. 8 adopt the present invention to be used for the strand low power pictorial diagram of the brake type soaking water gap of volume production, and the center porosity showing in Fig. 1 is obvious; The central pipe showing in Fig. 2 is more serious; The underbead crack showing in Fig. 3 is more outstanding; The centre burst showing in Fig. 4 is relatively serious.And adopt brake type submersed nozzle, and in its interior tissue, these common defects are relatively less, and result of use is obvious, is worthy to be popularized.
3) strand oscillation mark contrast situation is shown in accompanying drawing 9.
As seen from the figure, a is the strand not adopting after the present invention, b is that employing is of the present invention for the strand after the brake type soaking water gap of volume production, the depth of chatter mark of strand obviously alleviates before using, from original 1mm left and right, be relieved to 0.3 current～0.4mm, the information feeding back from rolling process judges, lumber recovery has improved 0.2% before also using.
The above-mentioned foundation desirable embodiment of the present invention of take is enlightenment, and by above-mentioned description, relevant staff can, within not departing from the scope of this invention technological thought, carry out various change and modification completely.The technical scope of this invention is not limited to the content on description, must determine its technical scope according to claim scope.
Claims (16)
1. the brake type soaking water gap for volume production, it is characterized in that: the endoporus (3) of the top end opening that comprise mouth of a river sidewall (1), surrounds with the bottom (2) of sidewall (1) one and sidewall (1) and bottom (2), the upper bore of described endoporus (3) evenly dwindles to lower bore, on the sidewall (1) of described endoporus (3) tangential direction, circumferentially offer a plurality of uniform first flow holes (4), the entrance in described first flow hole (4) is communicated with endoporus (3).
2. the brake type soaking water gap for volume production as claimed in claim 1, it is characterized in that: described first flow hole (4) has 4, cross section is oval, 4 first flow holes (4) are circumferentially uniform along the same level cross section of endoporus (3), and 4 first flow holes (4) are all downward-sloping.
3. the brake type soaking water gap for volume production as claimed in claim 2, is characterized in that: the exit major axis in described first flow hole (4) is greater than the radius of endoporus (3) and is less than the diameter of endoporus (3).
4. the brake type soaking water gap for volume production as claimed in claim 3, is characterized in that: the downward-sloping angle in 4 first flow holes (4) is 20 °-25 °.
5. the brake type soaking water gap for volume production as claimed in claim 4, is characterized in that: the downward-sloping angle in 4 first flow holes (4) is 25 °.
6. the brake type soaking water gap for volume production as claimed in claim 5, is characterized in that: 4 first flow holes (4) all have makes stream strand produce the first oblique angle of equidirectional rotation.
7. the brake type soaking water gap for volume production as claimed in claim 6, is characterized in that: the first described oblique angle is 45 °.
8. the brake type soaking water gap for volume production as claimed in claim 1, it is characterized in that: described first flow hole (4) has 4, wherein 2 is sprue hole (6), other 2 is secondary channels hole (7), 2 sprue holes (6) are positioned on same level line and are oppositely arranged, 2 secondary channels holes (7) are positioned at top, 2 sprue holes (6) and are also oppositely arranged in the same horizontal line, vertical setting mutually between two sprue holes (6) and two secondary channels holes (7), 2 sprue holes (6) are downward-sloping, and 2 secondary channels holes (7) are inclined upwardly.
9. the brake type soaking water gap for volume production as claimed in claim 8, it is characterized in that: described sprue hole (6) and cross section, secondary channels hole (7) are ellipse, described sprue hole (6) major axis is greater than the radius of endoporus (3) and is less than the diameter of endoporus (3), and described secondary channels hole (7) major axis is not more than the radius of endoporus (3).
10. the brake type soaking water gap for volume production as claimed in claim 9, is characterized in that: the described downward-sloping angle in sprue hole (6) is 30 °-35 °.
The 11. brake type soaking water gaps for volume production as claimed in claim 10, is characterized in that: the described downward-sloping angle in sprue hole (6) is 32 °.
The 12. brake type soaking water gaps for volume production as claimed in claim 11, it is characterized in that: the having for making stream strand produce second oblique angle of rotation of the exit in described sprue hole (6), the having for making stream strand produce the 3rd oblique angle of rotation of the exit in described secondary channels hole (7).
The 13. brake type soaking water gaps for volume production as claimed in claim 12, is characterized in that: the direction of rotation that described sprue hole (6) and secondary channels hole (7) produce stream thigh is contrary.
The 14. brake type soaking water gaps for volume production as claimed in claim 13, is characterized in that: the angle at the second described oblique angle is 45 °, the angle at the 3rd described oblique angle is 39 °.
15. brake type soaking water gaps for volume production as described in claim 2 or 8, it is characterized in that: described bottom (2) also offer the cylinder concentric with endoporus (3) the second runner hole (5), the diameter in the second described runner hole (5) is less than the diameter of endoporus (3), and the entrance in the second described runner hole (5) is communicated with endoporus (3).
The 16. brake type soaking water gaps for volume production as claimed in claim 15, is characterized in that: described endoporus (3) is inverted frustum, and tapering is 0.8 °-1.6 °.
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| CN201310535294.3A CN103586451A (en) | 2013-11-01 | 2013-11-01 | Brake type immersion water gap for volume production |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2607214Y (en) * | 2003-02-19 | 2004-03-24 | 鞍山钢铁集团公司 | Immersed nozzle for continuous casting mould |
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| CN202527701U (en) * | 2012-01-17 | 2012-11-14 | 中冶南方工程技术有限公司 | Arrangement structure of submersed nozzles used for bloom continuous casting crystallizers |
| CN203541470U (en) * | 2013-11-01 | 2014-04-16 | 中天钢铁集团有限公司 | Braking type submerged nozzle used for mass production |
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| CN2607214Y (en) * | 2003-02-19 | 2004-03-24 | 鞍山钢铁集团公司 | Immersed nozzle for continuous casting mould |
| CN2626648Y (en) * | 2003-03-19 | 2004-07-21 | 青岛双鹰耐火材料有限公司 | Submerged nozzle possessing rotary agitation function |
| JP2009178748A (en) * | 2008-01-31 | 2009-08-13 | Kobe Steel Ltd | Stepped immersed nozzle with hand drum shape weir |
| CN201316801Y (en) * | 2008-11-26 | 2009-09-30 | 东北大学 | Ladle lateral-hole swirling-flow long nozzle for continuous casting tundishes |
| CN102361712A (en) * | 2009-03-25 | 2012-02-22 | 新日本制铁株式会社 | Immersion nozzle for continuous casting |
| CN201537698U (en) * | 2009-05-28 | 2010-08-04 | 青岛正望耐火材料有限公司 | Quadripuntal submerged nozzle for billet continuous casting |
| CN202527701U (en) * | 2012-01-17 | 2012-11-14 | 中冶南方工程技术有限公司 | Arrangement structure of submersed nozzles used for bloom continuous casting crystallizers |
| CN203541470U (en) * | 2013-11-01 | 2014-04-16 | 中天钢铁集团有限公司 | Braking type submerged nozzle used for mass production |
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