CN108465793A - A kind of continuous casting secondary cooling water injector - Google Patents
A kind of continuous casting secondary cooling water injector Download PDFInfo
- Publication number
- CN108465793A CN108465793A CN201810536298.6A CN201810536298A CN108465793A CN 108465793 A CN108465793 A CN 108465793A CN 201810536298 A CN201810536298 A CN 201810536298A CN 108465793 A CN108465793 A CN 108465793A
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- CN
- China
- Prior art keywords
- nozzle
- nip rolls
- strand
- continuous casting
- cooling water
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
- B22D11/1246—Nozzles; Spray heads
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The present invention provides a kind of continuous casting secondary cooling water injector, belongs to metallurgical technology field, including nip rolls, cylindrical for transmitting strand, is equipped with several, the axis of all nip rolls is set up in parallel in the same direction and linearly；And the top in side of the nip rolls far from strand is arranged for cooling down nip rolls and strand in nozzle sets, in the orthographic projection between two adjacent nip rolls or on single nip rolls of casting billet surface, is equipped with several；Rotation arrangement is carried out to nozzle in single-nozzle group, has achieved the purpose that slow down the heat transfer of strand corner, has improved the chink defect problem of strand during continuous casting crystallining, while shower water can play nip rolls cooling effect, can extend the service life of nip rolls.
Description
Technical field
The invention belongs to metallurgical technology fields, more particularly to a kind of continuous casting secondary cooling water injector.
Background technology
Continuous casting is molten steel constantly by water mold, is pulled straight from crystallizer lower exit port after congealing into hard shell, is passed through
Water-spraying control, (two cold water spray schematic diagram of conticaster inner arc) as shown in Figure 1 are all cut into the founder of one piece of block casting base after solidification
Skill process.In casting process, the strand of high quality in order to obtain, it is desirable that strand temperature will uniformly decline along casting direction,
It is small as possible in the transverse temperature gradient perpendicular to casting direction, to reduce the influence of thermal stress, mechanical stress to slab quality,
The especially corner of strand, since the region is Two-Dimensional Heat, heat dissipation is faster than other regions, therefore, how to reduce this
The heat dissipation speed in region so that the temperature gradient in the region and other regions of strand is small as possible, is the pass of continuous casting process
Key problem.
There are some drawbacks in structure in the prior art, partial devices need to be adjusted nozzle height, however high
The adjustment of degree can cause the pressure for spraying water droplet to be varied from, and influence the uniformity of casting billet surface transverse direction heat-transfer effect, exacerbate
The heat transfer difference in edge nozzle spray region and the spray region of middle part nozzle in same cooling zone, partial devices will be same secondary
The spray circuit of cooling zone is divided into edge circuit and middle part circuit, is decided whether to open edge circuit according to the width of strand.But
The greatest problem of this method is can only to slow down the corner heat transfer of strand within the scope of one fixed width, exceeds the strand of the width range
It can not then adjust, the slab quality for often occurring certain width in actual production process is relatively good, and the casting of some width
Base then second-rate problem.
Invention content
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of continuous casting secondary cooling water sprays to fill
It sets, it is wide according to different casting blank under the premise of not increasing cost, by rotating di-cold spray nozzle to adjust spray to strand
Shower water overlay area reaches and slows down the heat transfer of strand corner, while shower water can cool down nip rolls, extend nip rolls service life
Purpose.
In order to achieve the above objects and other related objects, the present invention provides a kind of continuous casting secondary cooling water injector, is used for
Cooling strand, including nip rolls, it is cylindrical for transmitting strand, several are equipped with, the axis of all nip rolls is in the same direction and linear
It is set up in parallel；And nozzle sets are arranged the top in side of the nip rolls far from strand, are casting for cooling down nip rolls and strand
The orthographic projection on base surface is equipped with several between two adjacent nip rolls or on single nip rolls；It is equipped in each nozzle sets
The nozzle of three axis direction linear arrangements along nip rolls；Two adjacent nozzles in single-nozzle group are by rotary shaft phase
Even, the axis of nip rolls is first direction in the projecting direction of casting billet surface.
Further, nozzle adjacent with two nozzles in single nozzle sets is first jet, the first jet
It is arranged along first direction, other two nozzle is second nozzle and third nozzle, between the second nozzle and first direction
Angle is a, and the angle between the third nozzle and first direction is b；Wherein, 0 ° of 180 ° of ＜ a ＜, 0 ° of 180 ° of ＜ b ＜.
Further, strand is Z along the overall width of nip rolls axis direction, and strand water drenching region is along nip rolls axis direction width
For Y, X=Z-Y, 0mm ＜ X ＜ 300mm.
Further, the rotary shaft is arranged in the water drenching overlay area of two adjacent nozzles in single-nozzle group
On heart point.
Further, a=b, angle is equal between second nozzle and the direction of rotation of third nozzle and first direction, two
The direction of rotation and water drenching overlay area of nozzle are mutually parallel.
Further, a=b=10 °, the direction of rotation of second nozzle and third nozzle is to be revolved counterclockwise along first direction
Turn 10 °.
As described above, the present invention, it has the advantages that：
Involved a kind of continuous casting secondary cooling water injector in the present invention, revolves nozzle in single-nozzle group
Turn arrangement, has achieved the purpose that slow down the heat transfer of strand corner, improved the chink defect problem of strand during continuous casting crystallining, simultaneously
Shower water can play nip rolls cooling effect, can extend the service life of nip rolls.
Description of the drawings
Fig. 1 is the structural schematic diagram of the embodiment of the present invention.
Fig. 2 is two cold water spray schematic diagram of conticaster inner arc.
Piece mark explanation
1 nip rolls
2 rotary shafts
3 nozzles
4 strands
Specific implementation mode
Illustrate that embodiments of the present invention, those skilled in the art can be by this explanations by particular specific embodiment below
Content disclosed by book understands other advantages and effect of the present invention easily.
It please refers to Fig.1 to Fig. 2.It should be clear that structure, ratio, size etc. depicted in this specification institute accompanying drawings, only to
Coordinate the revealed content of specification, so that those skilled in the art understands and reads, being not limited to the present invention can be real
The qualifications applied, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size
It is whole, in the case where not influencing the effect of present invention can be generated and the purpose that can reach, should all still fall in disclosed skill
Art content obtains in the range of capable of covering.Meanwhile in this specification it is cited as "upper", "lower", "left", "right", " centre " and
The term of " one " etc. is merely convenient to being illustrated for narration, rather than to limit the scope of the invention, relativeness
It is altered or modified, in the case where changing technology contents without essence, when being also considered as the enforceable scope of the present invention.
The present invention provides a kind of continuous casting secondary cooling water injector, for cooling down strand 4, including nip rolls 1, for transmitting casting
Base 4, it is cylindrical, several are equipped with, the axis of all nip rolls 1 is set up in parallel in the same direction and linearly；And nozzle sets, for cold
But nip rolls and strand 1, are arranged the top in side of the nip rolls 1 far from strand 4,4 surface of strand orthographic projection adjacent
Between two nip rolls 1 or on single nip rolls 1, it is equipped with several；Along the axis direction of nip rolls 1 there are three being set in each nozzle sets
The nozzle 3 of linear arrangement；Two adjacent nozzles 3 in single-nozzle group are connected by rotary shaft 2, and the axis of nip rolls 1 is being cast
The projecting direction on 4 surface of base is first direction.
Preferably, nozzle 3 adjacent with two nozzles 3 in single nozzle sets is first jet, the first jet
It is arranged along first direction, other two nozzle is second nozzle and third nozzle, between the second nozzle and first direction
Angle is a, and the angle between the third nozzle and first direction is b；Wherein, 0 ° of 180 ° of ＜ a ＜, 0 ° of 180 ° of ＜ b ＜；Strand
4 along 1 axis direction of nip rolls overall width be Z, 4 water drenching region of strand along 1 axis direction width of nip rolls be Y, X=Z-Y, 0mm ＜ X
＜ 300mm；The rotary shaft 2 is arranged on the central point of water drenching overlay area of two adjacent nozzles 3 in single-nozzle group；
A=b, angle is equal between second nozzle and the direction of rotation of third nozzle and first direction, the direction of rotation of two nozzles 3 and
Water drenching overlay area is mutually parallel；A=b=10 °, the direction of rotation of second nozzle and third nozzle is along the first direction inverse time
Needle rotates 10 °.
Present invention needs are adjusted the rotation angle of second nozzle and third nozzle according to different 4 width of strand,
It needs to meet following demand：
1) rotary shaft 2 is arranged on the central point of 3 water drenching overlay area of adjacent flow nozzle；
2) rotation angle a, b are determined according to the width Z of strand 4, final to need by making X's to the adjustment of a, b
Value is between 0mm~300mm.
3) direction of rotation of second nozzle 3 and third nozzle 3 can be rotated clockwise, and can also be rotation counterclockwise.
During being produced using the prior art, easily there is the problem of chink in certain high alloy steel grades, apply
After the present invention, chink defect is greatly improved, 1 some extension of life of nip rolls.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology can all carry out modifications and changes to above-described embodiment without violating the spirit and scope of the present invention.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should by the present invention claim be covered.
Claims (6)
1. a kind of continuous casting secondary cooling water injector, for cooling down strand, it is characterised in that：
It is cylindrical for transmitting strand including nip rolls, several are equipped with, the axis of all nip rolls is in the same direction and linear arranged side by side
Setting；
And for cooling down nip rolls and strand the top in side of the nip rolls far from strand is arranged, in casting billet surface in nozzle sets
Orthographic projection between two adjacent nip rolls or on single nip rolls, be equipped with several；
Along the nozzle of the axis direction linear arrangement of nip rolls there are three being set in each nozzle sets；
Two adjacent nozzles in single-nozzle group are connected by rotary shaft,
The axis of nip rolls is first direction in the projecting direction of casting billet surface.
2. continuous casting secondary cooling water injector according to claim 1, it is characterised in that：In single nozzle sets with two
The adjacent nozzle of nozzle is first jet, and the first jet is arranged along first direction, and other two nozzle is second nozzle
With third nozzle, the angle between the second nozzle and first direction is a, the folder between the third nozzle and first direction
Angle is b；Wherein, 0 ° of 180 ° of ＜ a ＜, 0 ° of 180 ° of ＜ b ＜.
3. continuous casting secondary cooling water injector according to claim 1, it is characterised in that：Strand is along nip rolls axis direction
Overall width is Z, and strand water drenching region is Y, X=Z-Y, 0mm ＜ X ＜ 300mm along nip rolls axis direction width.
4. continuous casting secondary cooling water injector according to claim 1, it is characterised in that：The rotary shaft is arranged single
In nozzle sets on the central point of the water drenching overlay area of two adjacent nozzles.
5. continuous casting secondary cooling water injector according to claim 1, it is characterised in that：A=b, second nozzle and third
Angle is equal between the direction of rotation of nozzle and first direction, and the direction of rotation and water drenching overlay area of two nozzles are mutually flat
Row.
6. continuous casting secondary cooling water injector according to claim 1, it is characterised in that：A=b=10 °, second nozzle with
The direction of rotation of third nozzle is to rotate 10 ° counterclockwise along first direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810536298.6A CN108465793A (en) | 2018-05-30 | 2018-05-30 | A kind of continuous casting secondary cooling water injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810536298.6A CN108465793A (en) | 2018-05-30 | 2018-05-30 | A kind of continuous casting secondary cooling water injector |
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| Publication Number | Publication Date |
|---|---|
| CN108465793A true CN108465793A (en) | 2018-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810536298.6A Pending CN108465793A (en) | 2018-05-30 | 2018-05-30 | A kind of continuous casting secondary cooling water injector |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4256168A (en) * | 1976-08-14 | 1981-03-17 | Demag, Aktiengesellschaft | Cooling spray nozzle adjusting arrangement particularly for steel strand casting plants |
| CN101618373A (en) * | 2008-07-03 | 2010-01-06 | 杨守信 | Spraying device with automatically adjusted spray angle |
| CN101642804A (en) * | 2009-09-09 | 2010-02-10 | 北京科技大学 | Method for realizing continuous casting plate bank uniform secondary cooling |
| CN201855931U (en) * | 2010-11-18 | 2011-06-08 | 马鞍山钢铁股份有限公司 | Cooling device of secondary cooling area for special-shaped blank continuous casting |
| CN203003102U (en) * | 2012-12-12 | 2013-06-19 | 武汉钢铁(集团)公司 | Recooling jet nozzle system of slab caster |
| CN103464708A (en) * | 2013-09-06 | 2013-12-25 | 上海宝锋工程技术有限公司 | Secondary cooling nozzle arranging method for silicon steel slab continuous casting |
| CN208261808U (en) * | 2018-05-30 | 2018-12-21 | 中冶赛迪工程技术股份有限公司 | A kind of continuous casting secondary cooling water injector |
-
2018
- 2018-05-30 CN CN201810536298.6A patent/CN108465793A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4256168A (en) * | 1976-08-14 | 1981-03-17 | Demag, Aktiengesellschaft | Cooling spray nozzle adjusting arrangement particularly for steel strand casting plants |
| CN101618373A (en) * | 2008-07-03 | 2010-01-06 | 杨守信 | Spraying device with automatically adjusted spray angle |
| CN101642804A (en) * | 2009-09-09 | 2010-02-10 | 北京科技大学 | Method for realizing continuous casting plate bank uniform secondary cooling |
| CN201855931U (en) * | 2010-11-18 | 2011-06-08 | 马鞍山钢铁股份有限公司 | Cooling device of secondary cooling area for special-shaped blank continuous casting |
| CN203003102U (en) * | 2012-12-12 | 2013-06-19 | 武汉钢铁(集团)公司 | Recooling jet nozzle system of slab caster |
| CN103464708A (en) * | 2013-09-06 | 2013-12-25 | 上海宝锋工程技术有限公司 | Secondary cooling nozzle arranging method for silicon steel slab continuous casting |
| CN208261808U (en) * | 2018-05-30 | 2018-12-21 | 中冶赛迪工程技术股份有限公司 | A kind of continuous casting secondary cooling water injector |
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