CN201227683Y - Short side foot-roller and support frame for slab continuous casting crystallizer - Google Patents
Short side foot-roller and support frame for slab continuous casting crystallizer Download PDFInfo
- Publication number
- CN201227683Y CN201227683Y CNU200820151163XU CN200820151163U CN201227683Y CN 201227683 Y CN201227683 Y CN 201227683Y CN U200820151163X U CNU200820151163X U CN U200820151163XU CN 200820151163 U CN200820151163 U CN 200820151163U CN 201227683 Y CN201227683 Y CN 201227683Y
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- roller
- minor face
- bracing frame
- continuous casting
- face foot
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Abstract
The utility model discloses a minor face foot roll and a support frame thereof for a slab continuous casting mould. The minor face foot roll and support frame thereof comprise a support frame, three pretension devices, two nozzles and a support beam. Two ends of the support beam are respectively and fixedly connected with two baffles on the two sides of the bracket. Because a certain rigidity structure is added on the original support frame, the utility model keeps good rigidity when bearing the frequent thermal fatigue action, and has the advantages of avoiding the deformation of the minor face foot roll bracket which is caused by high temperature for a long time, and greatly prolonging the service life of the minor face foot roll bracket, thereby improving the service life of a continuous casting mould and stopping the leakage of a casting machine which is caused by the internal dent of the minor face foot roll. Furthermore, the utility model has the advantages of meeting the requirement that the width of the mould needs to be adjusted in high speed, improving the production efficiency of the casing machine and the quality of a casting billet, and reducing the cost of the production and equipment maintenance.
Description
Technical field
The utility model relates to field of metallurgy, relates in particular to a kind of auxiliary support apparatus that is used for conticaster.
Background technology
The crystallizer minor face of slab caster foot roller bracing frame be the box-shaped reinforcing plate structure that adopts a rigidity by three independently pre-tightening apparatus (all adopting pretension bolt+dish spring to form) as Baosteel 2CC, 3CC install three sufficient rollers will arranging from top to bottom and fix.In June, 2005, the 2# conticaster of Baosteel has carried out comprehensive reformation, adopted the high speed adjustable mold after the transformation, this technology has the wide speed of accent fast, the characteristics that stability is strong, it (mainly is that accent is wide accurately that production efficiency and slab quality are improved, transfer the wide base length short) good facilitation all arranged, but in transferring wide process, the tapering that crystallizer minor face copper coin and side foot roller form together changes very greatly, so in transferring wide process, the sufficient roller of crystallizer minor face is along with the variation of the shape of strand, its preloading spring will compress, and this moment, sufficient roller roll surface can be dropped back because of the spring compression, thereby reaches the purpose of support force buffering.
The concrete structure of the prior art such as Fig. 1-shown in Figure 6, whole sufficient roller and support frame structure comprise: sufficient roller 1, turning cylinder 2, backboard 3, pretension dish spring 4, pretension piece 5, jaw 6, top board 7, pretension screw 8, side shield 11, top roll 1-1, central roll 1-2, lower roll 1-3, base plate 18, nut 19.As shown in Figure 4, be fixed with the three kinds of on all four sufficient roll structure of version unit on the sufficient roller bracing frame, be respectively top roll 1-1, central roll 1-2 and lower roll 1-3.Each sufficient roll structure unit all is made up of sufficient roller 1, jaw 6, pretension piece 5, pretension dish spring 4, pretension screw 8 respectively.As Fig. 5, shown in 6, by rotation pretension screw 8, with pretension dish spring 4 compression locking so that and produce certain pretightning force between the pretension screw 8, play jacking foot roller purpose, define wide base deformation force of accent or bulge force level that sufficient roller 1 roll surface bears simultaneously, when promptly wide base deformation force of accent that bears when sufficient roller 1 roll surface or bulge power are above the pretightning force of pretension dish spring 4, pretension dish spring 4 can compress immediately, with the wide distortion of accent or the effect of bulge power of buffering base shell 9; When base shell 9 transfers wide distortion or bulge power to return to the pretightning force that is lower than preloading spring 4, the roll surface of foot roller 1 can be under the effect of pretightning force homing, the roll gap face of guaranteeing three pairs of sufficient rollers (top roll 1_1, central roll 1-2 and lower roll 1-3) is arranged and is met predetermined tapering form, and this arrangement form can reduce bulge (A and the B point) degree of casting blank shell 9.Nozzle 16 is located between each sufficient roller, is used for spraying cooling water.
But the working environment of crystallizer minor face foot roller bracing frame is very abominable, because the and then outlet of crystallizer herein, the base shell surface temperature of strand is high, is in substantially more than 1000 ℃.So though herein by spraying cooling water at a high speed, because hyperthermia radiation and thermal contact conductance effect, the bulk temperature of sufficient roller bracing frame is very high.And for the performance analysis of single sufficient roller bracing frame as can be known, its temperature fluctuation range that stands is big, and period of waves is frequent, and therefore sufficient roller bracing frame must be able to be resisted heat fatigue and creep effect.
Yet the original design form of Baosteel 2CC minor face foot roller bracing frame does not have this ability.Shown in Fig. 7-10,10 liquid molten steel, 17 is that sufficient roller is the chute that turning cylinder 2 is provided with.After a novel sufficient roller bracing frame was reached the standard grade, often after the certain stove number of casting, certain thermal deformation took place in sufficient roller bracing frame, formed distortion back side panel 13.It can cause sufficient roller can't eject and return to the normal position standing overload power (transferring wide operation) to be compressed the back.Cause transferring wide back three pairs of minor faces foot roller roll surface indent in various degree, departed from the tapering form that presets.As shown in figure 10, can't At time of eject as lower roll 1-3, just formed a kind of spill roll surface and distributed, this just directly causes casting blank shell 9 to form excessive bulge amount near the indent roll surface, and as C point and D point, this bulge causes the main cause of the regional bleed-out of sufficient roller just.(having taken place 20 times) also is the main cause that causes strand side mass defect.
Be directed to this design defect, the overhaul of the equipments personnel of crystallizer foot roll think: reject the pretension jacking apparatus at sufficient roller rear portion, adopt the rigidity Welding Structure to replace.This form seems rationally, but for crystallizer high speed width modulation system, because there is not compressible cushioning effect can cause the failure of crystallizer high speed width modulation system function on the contrary.
Therefore, the on-the-spot urgent need of continuous casting carried out a kind of rational structure transformation at the wide casting machine crystallizer of this high velocity modulation minor face foot roller bracing frame, make it to meet the wide requirement of the high velocity modulation of crystallizer, can play again after accent is wide, guarantee that side foot roller ejects fully, and return to the normal position, in case the unusual new structure of leak-stopping steel and cc billet surface quality.
Summary of the invention
The purpose of this utility model provides a kind of continuous casting crystallizer for plate billet minor face foot roller and bracing frame thereof, by adding the certain rigid structure on original bracing frame, does the time spent and still can keep good stiffness bearing frequent heat fatigue.Can avoid the distortion of minor face foot roller bracing frame Yin Gaowen generation for a long time, prolong the service life of minor face foot roller bracing frame greatly.Thereby improved the service life of continuous cast mold integral body, thoroughly stopped the bleed-out accident generation that casting machine causes because of minor face foot roller indent.And satisfied the wide requirement of the high velocity modulation of crystallizer, improved the productivity ratio of casting machine and the quality of strand, reduced production and cost of equipment maintenance.
The technical solution of the utility model: a kind of continuous casting crystallizer for plate billet minor face foot roller and bracing frame thereof comprise: a bracing frame, and it comprises a backboard, a top board, a base plate and two side shields; Wherein have three chutes on the side shield;
Three pre-tightening apparatus, it respectively comprises a sufficient roller; One jaw is rotationally connected by turning cylinder with sufficient roller, and turning cylinder is fastened in the chute; One pretension piece is fixedlyed connected with the tail end of jaw; One pretension screw, the one end is connected with the pretension piece, and the other end passes backboard and fixedlys connected with backboard by a nut; Also be with a pretension dish spring on the pretension screw;
Two nozzles are located in respectively between each sufficient roller;
Also comprise: at least one brace summer, its two ends are fixedlyed connected with two side shields of bracing frame respectively.
Preferably, described brace summer is two, is located at respectively in the roll gap between each sufficient roller.
Preferably, have a nozzle bore on the described brace summer, the pipeline of nozzle passes this through hole respectively.
Preferably, described brace summer is located at the position of close sufficient roller on two side shields.
Preferably, the gap 〉=5mm of described brace summer and adjacent two sufficient rollers.
Preferably, described brace summer is consistent with the Material Thermodynamics attribute of two side shields.
The utility model is owing to adopted above technical scheme, make it compared with prior art, have the following advantages and good effect: its transformation program is simple, and the opposing heat deformability is strong, can realize that minor face foot roller bracing frame excessive thermal deformation can not take place when normal casting is produced.Thereby guaranteed that three pairs of sufficient rollers can realize reasonably automatically expanding-contracting action, guaranteed that under normal casting condition particularly crystallizer transfers the reasonable tapering of wide metapedes roller roll surface to distribute.Improved the service life of continuous cast mold integral body, greatly reduced the continuous casting bleed-out accident rate, improved casting machine equipment service efficiency, greatly reduced and produce and cost of equipment maintenance.
Description of drawings
Fig. 1 is the sufficient roller stereogram of prior art.
Fig. 2 is the three-dimensional installation diagram of jaw, pretension dish spring and the backboard of prior art.
Fig. 3 is the sufficient roller of prior art and the three-dimensional installation diagram of pre-tightening apparatus.
Fig. 4 is the sufficient roller of prior art and the three-dimensional installation diagram of support frame.
Fig. 5 is the cutaway view of Fig. 4.
Fig. 6 is the sufficient roller roll surface of prior art and the normal schematic diagram that contacts of casting blank shell.
Fig. 7 is that the support frame Yin Gaowen of prior art produces the schematic diagram of distortion.
Fig. 8 is the stereogram that the sufficient roller of prior art can't eject because of high temperature deformation.
Fig. 9 is the side view of Fig. 8.
Figure 10 is that the bottom foot roller roll surface of prior art can't At time of eject and the schematic diagram that contacts of casting blank shell.
Figure 11 is the bracing frame stereogram that installs brace summer additional of the present utility model.
Figure 12 is the work schematic diagram of sufficient roller roll surface of the present utility model and casting blank shell.
Among the figure, 1 sufficient roller, 2 turning cylinders, 3 backboards, 4 pretension dish springs, 5 pretension pieces, 6 jaws, 7 top boards, 8 pretension screws, 9 base shells, 10 liquid molten steel, 11 side shields, 13 distortion back side panels, 1-1 top roll, 1-2 central roll, 1-3 lower roll, 14-1 upper support beam, 14-2 lower support beam, the nozzle bore of 15-1 upper support beam, the nozzle bore of 15-2 lower support beam, 16 nozzles, 17 chutes, the chute of 17-1 top roll correspondence, the chute of 17-2 central roll correspondence, the chute of 17-3 lower roll correspondence, 18 base plates, 19 nuts.
The specific embodiment
As Figure 11, shown in 12, the chute of the chute of the chute of the nozzle bore of the nozzle bore of 3 backboards, 7 top boards, 9 base shells, 10 liquid molten steel, 11 side shields, 1-1 top roll, 1-2 central roll, 1-3 lower roll, 14-1 upper support beam, 14-2 lower support beam, 15-1 upper support beam, 15-2 lower support beam, 16 nozzles, 17-1 top roll correspondence, 17-2 central roll correspondence, 17-3 lower roll correspondence wherein.
Present embodiment adopts the brace summer (upper support beam 14-1 and lower support beam 14-2) of a kind of creep resistant, high temperature resistance heat fatigue between two side plates 11 of prior art, be installed on respectively in the roll gap of top roll 1_1 and central roll 1-2, and in the roll gap of central roll 1-2 and lower roll 1-3, the thickness of brace summer must be lower than gap values between rollers, and stay the above gap of 5mm, avoid influencing the regular event of sufficient roller because of the thickness of brace summer.
Respectively be provided with nozzle bore 15-1, a 15-2 on brace summer 14-1, the 14-2, pull down nozzle 16 during installation earlier, back down framework with jack, brace summer 14-1,14-2 pack into, with bolting brace summer 14-1,14-2 (type of attachment between brace summer 14-1,14-2 and the side plate 11 can adopt welding, bolting etc. all can), nozzle 16 be installed at last.
Brace summer 14-1,14-2 are the platy structure with uniform thickness, the thermodynamics attribute basically identical of the thermodynamics attribute of its material and side shield 11.The bulk material of brace summer 14-1,14-2 must be selected corrosion-resistant, anti-creep, and the steel matter of heat-resistant anti-fatigue.
And the one-tenth-value thickness 1/10 of brace summer 14-1,14-2 must satisfy its rigidity that supports two side shields 11 and requirement of strength, the minor face foot roller bracing frame that brace summer is installed is when the casting operating mode, vertical range amplitude of deformation between two side shields 11 must be lower than 2mm, to guarantee the normal flexible of three pairs of sufficient rollers.
Improved opposing side plate 11 functional, can bear the buckling deformation that long-time high temperature fluctuation causes, thereby guaranteed that three pairs of sufficient rollers (top roll 1-1, central roll 1-2 and lower roll 1-3) remain on the correct roller position, have stopped the bleed-out that caves in and cause because of sufficient roller fully.
More than by means of specific embodiment the specific embodiment of patent of the present invention has been described; but it should be understood that; here concrete description should not be construed as the qualification to the spirit and scope of the invention; this invention is not only applicable to the structure of modification of the minor face foot roller bracing frame of slab caster; be applicable to other types structure of mould transformation simultaneously with minor face foot roller bracing frame form; the various modifications that all these one of ordinary skilled in the art make the foregoing description after reading this specification, the scope that all belongs to the present invention and protected.
Claims (6)
1. continuous casting crystallizer for plate billet minor face foot roller and bracing frame thereof comprise:
One bracing frame, it comprises a backboard (3), a top board (7), a base plate (18) and two side shields (11); Wherein have three chutes (17) on the side shield (11);
Three pre-tightening apparatus, it respectively comprises a sufficient roller (1); One jaw (6) is rotationally connected by turning cylinder (2) with sufficient roller (1), and turning cylinder (2) is fastened in the chute (17); One pretension piece (5) is fixedlyed connected with the tail end of jaw (6); One pretension screw (8), the one end is connected with pretension piece (5), and the other end passes backboard (3) and fixedlys connected with backboard (3) by a nut (19); Also be with a pretension dish spring (4) on the pretension screw (8);
Two nozzles (16) are located in respectively between each sufficient roller;
It is characterized in that also comprising: at least one brace summer, its two ends are fixedlyed connected with two side shields (11) of bracing frame respectively.
2. continuous casting crystallizer for plate billet minor face foot roller as claimed in claim 1 and bracing frame thereof is characterized in that:
Described brace summer is two, is located at respectively in the roll gap between each sufficient roller.
3. continuous casting crystallizer for plate billet minor face foot roller as claimed in claim 2 and bracing frame thereof is characterized in that:
Have a nozzle bore on the described brace summer, the pipeline of nozzle (16) passes this through hole respectively.
4. continuous casting crystallizer for plate billet minor face foot roller as claimed in claim 3 and bracing frame thereof is characterized in that:
Described brace summer is located at the position that two side shields (11) are gone up close sufficient roller (1).
5. continuous casting crystallizer for plate billet minor face foot roller as claimed in claim 4 and bracing frame thereof is characterized in that:
Gap 〉=the 5mm of described brace summer and adjacent two sufficient rollers.
6. continuous casting crystallizer for plate billet minor face foot roller as claimed in claim 5 and bracing frame thereof is characterized in that:
Described brace summer is consistent with the Material Thermodynamics attribute of two side shields (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820151163XU CN201227683Y (en) | 2008-07-24 | 2008-07-24 | Short side foot-roller and support frame for slab continuous casting crystallizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820151163XU CN201227683Y (en) | 2008-07-24 | 2008-07-24 | Short side foot-roller and support frame for slab continuous casting crystallizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201227683Y true CN201227683Y (en) | 2009-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820151163XU Expired - Fee Related CN201227683Y (en) | 2008-07-24 | 2008-07-24 | Short side foot-roller and support frame for slab continuous casting crystallizer |
Country Status (1)
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| CN (1) | CN201227683Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102151809A (en) * | 2010-02-11 | 2011-08-17 | 宝山钢铁股份有限公司 | Foot roll support frame with multi-section short-side foot rolls |
| CN103433445A (en) * | 2013-08-30 | 2013-12-11 | 鞍钢股份有限公司 | Rapid arc connecting method of slab caster crystallizer narrow face foot rollers |
| CN105414512A (en) * | 2015-11-26 | 2016-03-23 | 首钢京唐钢铁联合有限责任公司 | Control method of transverse corner cracks of casting blank of chamfering crystallizer |
-
2008
- 2008-07-24 CN CNU200820151163XU patent/CN201227683Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102151809A (en) * | 2010-02-11 | 2011-08-17 | 宝山钢铁股份有限公司 | Foot roll support frame with multi-section short-side foot rolls |
| CN102151809B (en) * | 2010-02-11 | 2013-01-02 | 宝山钢铁股份有限公司 | Foot roll support frame with multi-section short-side foot rolls |
| CN103433445A (en) * | 2013-08-30 | 2013-12-11 | 鞍钢股份有限公司 | Rapid arc connecting method of slab caster crystallizer narrow face foot rollers |
| CN105414512A (en) * | 2015-11-26 | 2016-03-23 | 首钢京唐钢铁联合有限责任公司 | Control method of transverse corner cracks of casting blank of chamfering crystallizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090429 Termination date: 20160724 |