CN208928866U

CN208928866U - A kind of furnace outlet slab purging spray beam

Info

Publication number: CN208928866U
Application number: CN201821245268.1U
Authority: CN
Inventors: 韩玉龙
Original assignee: Baotou Iron and Steel Group Co Ltd
Current assignee: Baotou Iron and Steel Group Co Ltd
Priority date: 2019-03-11
Filing date: 2019-03-11
Publication date: 2019-06-04
Anticipated expiration: 2029-03-11

Abstract

The utility model discloses a kind of furnace outlet slabs to purge spray beam, including column, air jet pipe, nozzle, the column is mounted on the two sides of slab and is 0.5 meter at a distance from water blocking roller, there are two installation positions for setting on the column, 19mm is spaced between two installation positions, the air jet pipe is mounted between column, the nozzle is mounted on air jet pipe, the number of the nozzle is 15, the jet direction of the nozzle and the surface angle of slab are 45 degree, 125mm is spaced between the adjacent nozzle, the side of the air jet pipe is provided with air inlet.A kind of furnace outlet slab purging spray beam of the utility model, it is tightly combined with scene, the setting purging spray beam between CSP production line heating furnace and inlet of rolling mill descaling mill, to prevent the water of descaling mill from entering heating furnace along steel slab surface, damaging resistance to material reduces steel temperature, to reduce rolling load, energy consumption is reduced.

Description

A kind of furnace outlet slab purging spray beam

Technical field

The utility model relates to field of metallurgical equipment more particularly to a kind of furnace outlet slab purging spray beams.

Background technique

CSP (compact strip plant) means close-coupled output strip line, refers to a forward position on current metallurgical boundary Technology has the advantages such as process is compact, small investment, low energy consumption.CSP process flow is general are as follows: and vertical bending type thin-slab caster → Swinging shears → roller hearth soaking furnace → high-pressure water descaler → vertical miller → 7 rack finish rolling → section cooling → downcoiler → steel coil transportation line → storage.The yield of CSP production line depends primarily on continuous casting, is protected when slab feed mill in the Shang Lu of tail portion Temperature will not lead to the problem of head and tail temperature difference, be not required to increasing speed rolling, and start rolling temperature is higher, thus relatively adapt to production thin gauge Hot-strip.Do not use increasing speed rolling, it is not necessary to which kinetic moment needed for considering synchronous raising speed can reduce roll to a certain extent Steel load.Therefore, CSP technique rolling thin slab product has a clear superiority.CSP technique eliminates slab cooling and reheating Process, the underbead crack defect that may occur during avoiding continuous casting billet from cooling and heating, has both saved the energy, has also improved gold Belong to recovery rate (facts have proved that lumber recovery improves 2%).Continuous casting billet maximum gauge increases to 90mm, improves the total compression of strip Than the performance quality of product can be improved.Conticaster uses funnel-type crystallizer, expands the operating space of submersed nozzle, prolongs The mouth of a river service life has been grown, thin-slab caster casting sequence is improved.Productivity can be improved, reduce refractory consumption rate, reduce life Produce cost.The soft Reduction Technology of wick-containing has can be used in CSP technique, while steel rolling description demand is flexibly met, reduces energy consumption, Improve product quality.It was verified that wick-containing pressure casting is bigger than the effect of thinned corresponding size slab to the effect of refinement crystal grain. Due to crystal grain refinement, so that the toughness that slab obtains at the same temperature is more preferable.When casting thickness is 60~100mm, use The better effect of mould wall thickness is thinned in final finished mass ratio after wick-containing Reduction Technology.Vertical miller energy is arranged in CSP production line Sheet billet width is automatically adjusted, to improve sheet billet width accuracy, sheet billet edge cracks is reduced, improves sheet billet edge Quality.In addition also there is certain effect to abolishing sheet billet edge iron scale.CSP production line Continuous mill train generally uses 7 racks Finishing mill, this is to take into account the synthesis result that maximum slab thickness is 90mm and mill product minimum thickness is 0.8mm.This The great advantage of kind configuration is the requirement that can adapt to improve compression ratio and further develop ferritic steel rolling.The finish rolling of CSP One of the characteristics of machine reduction ratio is bigger than conventional hot rolling technology, and heavy reduction, stiff mill become CSP.

Roller hearth type heating furnace is with chamber furnace thorax, and furnace bottom is made of furnace roller and transmission mechanism, will be rolled by furnace roller rotation Part is removed the heating furnace outside furnace by feed end.Roller hearth type heating furnace is divided into bringing-up section, soaking zone, ferry-boat section, soaking zone.Bringing-up section 20% or so of stove overall length is accounted for, remaining each section accounts for the remaining length of stove.Bringing-up section is heated using big burner, heating speed Degree is fast, and for heating slab, dielectric dissipation is more；Remaining each section uses small burner, and heating speed is slow, is mainly used for keeping the temperature slab, Dielectric dissipation is few.Under normal circumstances, the heating efficiency of bringing-up section is 2 to 3 times of soaking zone heating efficiency.

In CSP production line, since distance is close between roller hearth type heating furnace and finishing mill, and middle ware is separated with high-pressure water descaling Machine.Therefore, when steel slab surface form changes, whole de-scaling water effectively cannot be kept off back descaling mill, meeting by descaling mill water blocking roller Some de-scaling water enters heating furnace along slab, to cause board briquette unevenness, damage resistance to material, rolling thickness wave in furnace A series of problems, such as dynamic.

Utility model content

The purpose of this utility model is that providing a kind of furnace outlet slab purging spray in view of the deficiencies of the prior art Beam is tightly combined with scene, the setting purging spray beam between CSP production line heating furnace and inlet of rolling mill descaling mill, to prevent from removing The water of squama machine enters heating furnace along steel slab surface, and damaging resistance to material reduces steel temperature, to reduce rolling load, reduces energy consumption.

In order to achieve the above objectives, the utility model is achieved through the following technical solutions.

A kind of furnace outlet slab purging spray beam, including column, air jet pipe, nozzle, the column are mounted on slab Two sides and be 0.5 meter at a distance from water blocking roller, setting is spaced there are two installation position between two installation positions on the column 19mm, the air jet pipe are mounted between column, and the nozzle is mounted on air jet pipe, and the number of the nozzle is 15, institute The surface angle of the jet direction and slab of stating nozzle is 45 degree, and 125mm is spaced between the adjacent nozzle, the air jet pipe Side is provided with air inlet.

A kind of furnace outlet slab purging spray beam of the utility model, is tightly combined with scene, heats in CSP production line Setting purging spray beam between furnace and inlet of rolling mill descaling mill, to prevent the water of descaling mill from entering heating furnace along steel slab surface, damage Resistance to material reduces steel temperature, to reduce rolling load, reduces energy consumption.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the air jet pipe of the utility model；

Fig. 2 is position view of the utility model blowing device in csp production line；

Fig. 3 is the structural schematic diagram of the column of the utility model；

In figure: 1, column；2, air jet pipe；3, nozzle；11, installation position；21, air inlet.

Specific embodiment

The utility model is described further below with reference to embodiment, but is not limited to the content on specification.

As shown in the figure: a kind of furnace outlet slab purging spray beam, it includes column 1, air jet pipe 2, nozzle 3, and column 1 is pacified Mounted in slab two sides and at a distance from water blocking roller be 0.5 meter, air jet pipe 2 is mounted on column 1, on column 1 setting there are two Installation position 11 is spaced 19mm between two installation positions 11, and nozzle 3 is mounted on air jet pipe 2 every 125mm mono- mode, always Meter 15, the side of air jet pipe 2 are provided with air inlet 21, and the jet direction of nozzle 3 and the surface of slab are in 45 degree of angles.

The utility model is in furnace outlet, special to pacify before water blocking roller at 0.5 meter near descaling mill water blocking roller Dress purging spray beam installs column, in the top of roll line installation purging spray beam.The angle of purging spray beam is blown along steel band direction of advance For the nozzle angle and steel slab surface for sweeping spray beam in 45° angle, number, the spacing of nozzle are consistent with descaling mill spray number, the spacing of beam, And it corresponds.Position view is shown in Fig. 2.

The utility model is different according to the thickness of slab, and position is variable.On purging spray beam installation column, two positions are installed It sets, sprays and be attached between beam and main pipeline using hose, the position quick-replaceable of spray beam may be implemented, slab thickness mainly has Two kinds i.e. 72 millimeters, 53 millimeters, each positional distance steel slab surface are 200 millimeters.Position adjustment structure schematic diagram is shown in Fig. 1.

The valve opening and closing of purging spray beam is related with the load signal of descaling mill water blocking roller.Load (the induction of descaling mill water blocking roller Water blocking roller is reached to steel billet), purging spray beam valve is opened；Descaling mill water blocking roller unloads (sensing that steel billet leaves water blocking roller), blows It sweeps spray beam valve to close, interlock condition schematic diagram is shown in Fig. 3.

The utility model compared with the prior art, has the advantages that following significant and effect:

(1) using a kind of furnace outlet slab purging spray beam, it is possible to prevente effectively from descaling mill water blocking roller water blocking is not made sternly At water enter heating furnace the case where generation.

(2) using a kind of furnace outlet slab purging spray beam, whether load to form interlock condition with water blocking roller, reach section The effect of energy.

(3) using a kind of furnace outlet slab purging spray beam, there are two different positions, realize the plate of different-thickness Switching between base, ensure that purging effect.

The utility model is a kind of furnace outlet slab purging spray beam, that is, is mounted on CSP production line heating furnace and de-scaling Slab purging spray beam between machine, is removed the water of billet surface by the compressed air with pressure, effectively to avoid de-scaling The water of machine enters heating furnace along steel billet.

Before implementation, when CSP production line produces strip, often there is de-scaling water along slab and enter heating furnace, cause plate Base temperature reduces, resistance to material loss.After implementation, steel billet temperature can be improved 10 DEG C or more, and rolling load reduces, and power consumption can save every year About 500,000 yuan or more of direct economic benefit, further for the indirect of the recessiveness such as resistance to material loss reduction, the raising of measuring device precision Economic benefit is not yet included in.There is extensive dissemination in the CSP production line of same type.

Obviously, the above embodiment of the utility model is merely examples for clearly illustrating the present invention, And it is not limitations of the embodiments of the present invention.For those of ordinary skill in the art, it is stated upper It can also be made other variations or changes in different ways on the basis of bright.Here all embodiments can not be given thoroughly It lifts.It is all to belong to obvious changes or variations that the technical solution of the utility model is extended out still in the utility model Protection scope column.

Claims

1. a kind of furnace outlet slab purging spray beam, it is characterised in that: it includes column (1), air jet pipe (2), nozzle (3), The column (1) is mounted on the two sides of slab and is 0.5 meter at a distance from water blocking roller, and there are two peaces for setting on the column (1) It fills position (11), is spaced 19mm between two installation positions (11), the air jet pipe (2) is mounted between column (1), the spray Mouth (3) is mounted on air jet pipe (2), and the number of the nozzle (3) is 15, the jet direction of the nozzle (3) and slab Surface angle is 45 degree, and 125mm is spaced between the adjacent nozzle (3), and the side of the air jet pipe (2) is provided with air inlet (21)。