CN103562419B - Flat product is carried out the apparatus and method of continuous processing - Google Patents
Flat product is carried out the apparatus and method of continuous processing Download PDFInfo
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- CN103562419B CN103562419B CN201280022848.3A CN201280022848A CN103562419B CN 103562419 B CN103562419 B CN 103562419B CN 201280022848 A CN201280022848 A CN 201280022848A CN 103562419 B CN103562419 B CN 103562419B
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Abstract
The present invention relates to flat product (S) is carried out the apparatus and method of continuous processing.According to assembly of the invention, this is included the annealing burner hearth (1) indirectly heated, for being passed to anneal conveyer device that the transport path (4) of outlet (6) of burner hearth (1) carries continuously and for the atmosphere gas reacting flat product (S) being input to the spray nozzle device (D1, D2) in burner hearth (1) of annealing via the entrance (5) from annealing burner hearth (1) by flat product (S).In order to particularly economical, reliable mode carries out continuous processing targetedly to each flat product, the present invention is provided with first jet device (D1) and second nozzle device (D2), in processing procedure, gas beam (G) ejects from this first jet device, this gas beam produces the direction of the entrance (5) towards annealing burner hearth (1), first air-flow (G1) on the surface of inswept pending flat product (S), in processing procedure, gas beam (G) ejects from this second nozzle device, this gas beam produces the direction of the outlet (6) towards annealing burner hearth (1), second air-flow (G2) on the surface of inswept pending flat product (S).
Description
Technical field
The present invention relates to a kind of device that flat product carries out continuous processing, this device has the annealing furnace of heating indirectly
Thorax, for by flat product via from annealing burner hearth entrance pass to anneal furnace outlet transport path carry continuously defeated
Send device and for the atmosphere gas reacted with flat product is input to the spray nozzle device in burner hearth of annealing.
The invention still further relates to the processing method of a kind of flat product, in the method, by flat product in a continuous manner
It is transported to, by the annealing burner hearth of heating indirectly, furnace outlet of annealing from annealing burner hearth entrance, wherein reacts with flat product
Air is maintained in annealing burner hearth, and this air is incorporated in annealing burner hearth via spray nozzle device.
Background technology
Referred to herein as " flat product " be considered the rolled products that is made up of steel, this rolled products e.g. steel band, steel
Plate or blank therefrom.
Additionally, by document DE 25 22 485 A1 it is known that can to limit the surface of steel band targetedly by oxidation anti-
Ying Xing.Therefore can also to such flat product after carrying out surface oxidation targetedly by hot-dip coated painting deposit
Belonging to protective layer, this flat product can not have required repeatable system due to the composition of its steel under undressed state
It is coated the property made and zero defect.
The belt body being such as made up of high strength steel, the most so-called " senior high strength steel " (AHSS) or sheet material belong to can be with
This mode applies the product of this anticorrosive protective layer.This steel is in addition to comprising ferrum and inevitable impurity, generally
Also include (shown in weight %) C:0.01-0.22%, Mn:0.5-3.0%, Si:0.2-3.0%, Al:0.005-2.0%,
Cr: not higher than 1.0%, Mo: not higher than 1.0%, Ti: not higher than 0.2%, V: not higher than 0.4%, Nb: not higher than 0.2%, Ni:
Not higher than 1.0%.
Owing to the technical significance of these products has done many trials, respectively by the method provided with economy
Mode is coated the pre-treatment step required for metal coating coating.
To this, in the continuous-type furnace of heating indirectly, the most so-called " radiating tube furnace ", abbreviation " RTF ", band steel is produced
Product carry out pre-oxidizing in terms of equipment and technology the most challenging.It is applied directly on pending flat product with naked light
And the oxidation potential in the atmosphere of belt body is surrounded in the change impact of the burning produced by air-gas mixture in a furnace
Smelting furnace different, the smelting furnace of RTF type does not use gas heating burner.In other words, by heat radiator to steel band
Heating, this heat radiator is configured along flat product by the transport path of the annealing burner hearth of each smelting furnace.
In order to realize the surface of flat product the most to be coated in practice in the continuous-type furnace of heating indirectly
Required oxidation, be provided with in RTF smelting furnace in document DE 10 2,004 059 566 B3 and move back with three steps
Fire.This is implemented the first annealing steps, i.e. avoid main alloying component to be diffused on the surface of belt body as far as possible.Then
Forming one layer of effective iron oxide layer the most targetedly, this iron oxide layer avoids final improve
In annealing temperature, other alloying component arrives on surface.Therefore can be in the atmosphere that can reduce in annealing subsequently
Middle formation pure iron layer, the coating that this pure iron layer is especially suitable for being made up of zinc and/or aluminum is sticked the most securely.
The precondition of preceding method is, pre-oxidizes, such as by O in the reative cell closed2As oxidant
It is transported in this reative cell.Generally arise a problem that in the smelting furnace of RTF type here, it should the annealing burner hearth of oxidation occurs
The region of its outlet and entrance isolates, at this relative to surrounding or following continuous print next one annealing thorax room
Next annealing thorax room also exists another kind of atmosphere.Institute's facing challenges is in this case, the most mutually distinguishes phase
Adjacent annealing burner hearth, i.e. there is in thorax room, different atmosphere each atmosphere not over other to exceed tolerance volume
Degree is contaminated.If needing to carry out reduction treatment in the thorax room of the adjacent annealing burner hearth carrying out and aoxidizing, then must keep away
The oxidant exempting to be transported in oxidizing chamber leaks in reative cell and avoids reduction atmosphere to invade oxidizing chamber from reative cell.
Otherwise may process achievement by undesirable side effect deterioration and make the effect of the coating carried out after an annealing treatment therewith
Fruit is by continuous worsening or be difficult to control to single annealing steps.Both of these case limits process stability and can lead
Cause the extra consumption of process gas.
By document WO 2009/030823 A1 known a kind of by means of fluting or perforation playpipe according to RTF tie
The continuous-type furnace of structure type carries the feasible scheme of gaseous oxidizer.
Additionally, this is elaborated an example by JP 2003-342645 A, how can be in being embodied as thorax cell structure
Annealing furnace in realize close oxide regions.Due to O2To reduction atmosphere, undesirable pollution, here need to pass through
With the mechanical sealing member of the form of compression roller and by avoiding in the low pressure within oxidizing chamber.These methods have unfavorable it
Place, i.e. inevitably the hydrogen required for reduction treatment is introduced oxide regions from reduced zone.Therefore in oxide regions
Middle formation water.This reaction combines the oxygen of existence in oxide regions, thus these oxygen be no longer able to for flat product surface,
Original desired oxidation.Therefore, it is difficult in actual applications adjust the oxidation control to flat product surface targetedly.
Particularly it has proven convenient that be difficult to when load conversion keep equipment performance constant.Thus can cause due to hot-dip coated and damage
Wettability or shortage adhesion.Additionally, oxidant in traditional course of conveying by fluting or perforation playpipe only
There is faint momentum therefore to be promoted by air-flow in furnace chamber before oxidant arrives flat product surface.
Summary of the invention
On the basis of above-mentioned prior art, it is an object of the invention to, it is provided that the device of the given type of beginning and side
Method, can connect each flat product by this device and the method in the way of economical, reliable targetedly
Continuous process.
By achieving this purpose according to apparatus and method of the present invention.Will be apparent from the general of the present invention below
Thought.
The present invention is from this knowledge point, i.e. by suitable movement-oriented device with in the inside of annealing burner hearth
Adjust oxidation atmosphere and can realize the sealing to thorax room.Therefore can be by rolling or similar approach, such as entering at burner hearth
Mouth or bleeding of exit omit mechanical sealing member.
Due to this purpose, according to the present invention, for including indirectly heating to the device of the continuous processing of flat product
Annealing burner hearth, for defeated via from annealing burner hearth entrance to annealing furnace outlet of the conveyer device of continuously conveying flat product
Path is sent to pass this annealing burner hearth.
Additionally, have for the atmosphere gas reacted with flat product is input to annealing furnace according to assembly of the invention
Spray nozzle device in thorax.
Be provided with first jet device and second nozzle device according to the present invention, in processing procedure gas beam from this first
Spray nozzle device ejects, and this gas beam produces the direction towards annealing burner hearth entrance, inswept pending flat product
The air-flow on surface, in processing procedure, gas beam ejects from this second nozzle device, this gas beam produce towards
Direction, the surface that the produces inswept pending flat product air-flow of annealing furnace outlet.
Therefore, so formation is present according to the spray nozzle device in the smelting furnace of the present invention, i.e. this spray nozzle device is at annealing furnace
The internal air-flow on the one hand produced towards annealing burner hearth Way in of thorax and another aspect produce towards annealing burner hearth exporter
To air-flow.To this, so calibrate, assemble and determine that air-flow size is important, i.e. the fluid energy foot of this air-flow simultaneously
Get at and reach outlet or entrance and the most inswept pending flat product.
Correspondingly according to the present invention, for processing in the method for flat product, in the method, flat product is with even
Continuous mode is transported to its outlet by the annealing burner hearth of heating indirectly from its entrance, wherein, maintain in annealing burner hearth have and
The atmosphere that flat product reacts, this atmosphere is incorporated in annealing burner hearth by spray nozzle device, at least completes down according to the present invention
The operation in face:
Produce towards annealing burner hearth entrance, the surface of inswept pending flat product by means of one of them spray nozzle device
The first air-flow and produce towards annealing furnace outlet, inswept pending flat product by means of second spray nozzle device
Second air-flow on surface.Therefore, inside annealing burner hearth with the air-flow of two rightabouts flowing towards environment or court
To the atmosphere being present in entrance in another thorax room being connected on annealing burner hearth, that be positioned at annealing burner hearth or outlet.Meanwhile,
Air-flow provides the strong contact between pending flat product and the furnace atmosphere causing required reaction on flat product.
Preferably so conveying forms the furnace gas of atmosphere in annealing burner hearth, i.e. protect in annealing burner hearth in processing operation
Hold the superpressure relative to ambient pressure at least 0.001bar.Owing to superpressure makes the atmosphere of environment or adjacent thorax room former
It is difficult on then invade in annealing burner hearth.Can arrange adjusting apparatus for this purpose, this adjusting apparatus is by rights
Adjust atmosphere gas and flow to burner hearth of annealing, the superpressure required for keeping.Relative to the superpressure of environment to this in annealing burner hearth
Should be more than 100mbar, because otherwise there being the danger that too much annealing burner hearth atmosphere is flowed out by entrance or outlet.
In principle, position to manufacture air-flow according to the present invention in annealing burner hearth there is one or more steam vent
Jet beam (such as combining with airflow guiding device, such as guide plate) is possible, by this airflow guiding device with suitably
Mode by the air-flow penetrated by jet beam via pending flat product towards correspond respectively to it annealing burner hearth entrance or
The direction conveying of outlet.
Include the nozzle of single, to produce gathering respectively gas beam at spray nozzle device, this gas beam respectively with treat
When the conveying direction of the flat product processed has specific angle of incidence, then obtaining favourable design, the design achieves can
Especially accurately and simultaneously adapt to simply each demand spatially or in Technology, according to the present invention at annealing furnace
The guide effect of the air-flow produced in thorax.Can produce in a straightforward manner inside annealing burner hearth by means of this single nozzle
The air-flow of raw high-eddy flowing, this air-flow contacts with pending flat product and thick and fast therefore on the surface of flat product
On cause required reaction with high intensity.
For the transport path of flat product, this can the most so be arranged the nozzle of spray nozzle device, i.e. logical
Cross corresponding, be newly added respectively in flow process, the impulse balance of gas beam that penetrated by each nozzle or calibration can
Can occur flow losses or be formed at annealing burner hearth in, towards annealing burner hearth entrance or outlet air-flow, reduce close
Collection property.On the one hand this can be made two or more nozzles transport road along pending flat product of each spray nozzle device
Footpath carries out being distributed and on the other hand can making the incidence of the gas beam penetrated by the nozzle of spray nozzle device with suitable interval
Angle numerically changes in the scope of 0 ° to 90 °.
It turned out so-called " playpipe " to be particularly suitable as being made every effort to, according to the present invention, the air-flow that obtains in order to produce
The gas beam of concentration is incorporated into the nozzle in annealing burner hearth, and this such as enters in document DE 10 2,004 047 985 A1
Go description.
If air-flow with spiral-shaped around pending belt body time, then at each air-flow and pending flat product
Between produce the most intensive exchange.In order to produce this spiral-shaped, the air-flow of special high-eddy flowing, so determine to
The direction of the nozzle of one of them spray nozzle device few is suitable, i.e. at least one in these nozzles sends towards pending
The gas beam in the direction, bottom surface of flat product, and at least another nozzle of one of them spray nozzle device sends towards pending
The gas beam in the end face direction of flat product.This is made in optimal manner in the longitudinal side of transport path, locate towards waiting
The nozzle (air-flow is directed at below pending flat product by the gas beam of this nozzle) of the bottom surface of the flat product of reason is right
Ying Yu is positioned at the nozzle in another longitudinal side, the gas beam of this nozzle towards the end face of pending flat product so that
The end face of the pending flat product of gas beacon alignment.
In addition the shape of air-flow required, that spirally flow can so be promoted around pending flat product
Becoming, i.e. observed by sectional view, the longitudinal side of annealing burner hearth bends to spill.Spill, particularly bend to regular
In the longitudinal side of curve, in the case of having the flow losses minimized, so deflection is ejected into the air-flow on the wall of longitudinal side, i.e.
Form stream whirlpool uniform especially, around flat product cincture.
Furthermore, it is possible to setting and orientation by the nozzle according to spray nozzle device provided by the present invention determine starting point, from
This starting point starts each air-flow to annealing burner hearth entrance or Way out flowing.According to the atmosphere laid respectively at entrance and exit
Pressure, this makes the starting point of air-flow move along the transport path of pending flat product to the direction of entrance or outlet can
Can be suitable.If moved back for the longitudinal length aspect of annealing burner hearth, the air-flow towards entrance and the air-flow towards outlet
The centre of stove thorax is respectively provided with the starting point of air-flow, then this obtains the situation of especially good control on regulation technology.
If the flow velocity of the gas beam penetrated respectively by spray nozzle device is 60-180m/s, then obtain according to this
The annealing of bright formation optimal flow ratio within burner hearth.
It is applicable to all of, the continuous processing of flat product in principle, at these according to the present invention, device design
During reason, the flat product carrying out carrying through the burner hearth of annealing of heating indirectly by each and the stove provided targetedly
The close contact of gas can manufacture the particular state on the surface of flat product.
If had proven to according to the inventive system comprises multiple burner hearth, pending flat product sequentially passes through these stoves
Thorax, wherein, at least one of which burner hearth by set forth herein, according to the present invention in the way of formed, then according to the present invention's
The application of device is particularly effective.Therefore, it can be attached to for prefabricated hot-dip coated flat according to assembly of the invention
In the production line of product made from steel.To this, except by described here, according to the present invention in the way of be provided with the burner hearth of nozzle in addition to, root
At least can also combine with another burner hearth according to assembly of the invention, flat product pending in this burner hearth with basis
It is further processed under the atmosphere that atmosphere that the present invention is formed, burner hearth of annealing that mention at first is different.
To this, preferably burner hearth formed according to the present invention is arranged between two annealing burner hearths.The advantage of do so exists
In, first the annealing burner hearth before being positioned at annealing burner hearth formed according to the present invention make flat product reach in basis
Temperature required for the processing procedure that carries out in the annealing burner hearth that the present invention is formed, then by being formed according to the present invention
Annealing burner hearth carries out carrying and then arrives in another annealing burner hearth being positioned at after the annealing burner hearth formed according to the present invention,
In this annealing burner hearth, flat product is finally processed.
Another thorax room was such as set before or after the burner hearth formed according to the present invention, for for hot-dip coated and
It is suitable that the preparation of the flat product carried out is probably.Can first be such as ensuing, with coat of metal to this
Then the hot-dip coated surface to flat product carried out aoxidizes reduces.In this case may be used according to assembly of the invention
Being a processing line, in this processing line, first it is being equipped according to the invention with the of nozzle, heating indirectly annealing furnace
One annealing burner hearth aoxidizes pending steel band and is then being adjacent to the heating on furnace outlet, indirect for annealing of oxidation
Second thorax room of annealing furnace carries out reduction treatment.Another thorax room is equally made to be positioned at the burner hearth formed according to the present invention
Before, in this thorax room, first under the atmosphere with reduction, flat product is carried out heat treatment, in order to afterwards in basis
The thorax room of the present invention carries out the heat treatment aoxidizing and again carrying out in ensuing burner hearth to reduce.To this, respectively
By oxidation-annealing burner hearth according to produced by the present invention, towards oxidation-annealing burner hearth output flow air-flow realize
Oxidation atmosphere in the oxidation thorax room formed according to the present invention with at the preposition or rearmounted reduction atmosphere reduced in thorax room
The separation enclosed, the superpressure being maintained in oxidation-annealing burner hearth also according to the present invention plays assosting effect.
In the case of needing to be used for aoxidizing steel band by the annealing burner hearth formed according to the present invention, set by the present invention
The nozzle of the spray nozzle device put is connected to N2-feeding mechanism and O2On-feeding mechanism.This can be adjusted in an advantageous manner note
Enter the N in each nozzle2-air-flow or O2-air-flow, so that produced atmosphere in annealing burner hearth can be adjusted targetedly
The constituent enclosed.This is incorporated into the gas in the nozzle of that provided by oxidation, arranged according to the present invention annealing burner hearth
Beam is generally by N2/O2Mixture is constituted, and the major part of this mixture is by the O with 0.01-20 volume %2The N of share2Structure
Become.To this in practice, if N2/O2The oxygen share of mixture is 0.01-5 volume %, then obtain optimal effect.
By at the model that during annealing burner hearth, the temperature of pending flat product is maintained at 450-950 DEG C
In enclosing, thus promote pending flat product and present in the annealing burner hearth formed according to the present invention atmosphere carry out instead
Should.To this by making the temperature being incorporated into the gas beam in annealing burner hearth be 100-1050 DEG C, band steel thus can be avoided to produce
Product, due to the temperature loss produced with being contacted by the gas beam penetrated according to spray nozzle device provided by the present invention.
Therefore, by the invention provides a kind of device for flat product being carried out continuous processing, this device,
In design for reality application particular importance, by using suitably, be arranged on nozzle (the such as institute in annealing burner hearth inside
The playpipe of meaning) (such as oxidant, such as O to provide reaction medium with the form of high-eddy2Or N2/O2Mixture) so that producing
At least two separates trend, spiral helicine air-flow each other to both sides.These spiral helicine fluid rings are around through annealing burner hearth
Flat product flowing.In order to annealing burner hearth inside produce spiral fluid, preferably annealing burner hearth in use three or
More spray nozzle device.
Accompanying drawing explanation
The present invention is elaborated below according to embodiment.Wherein, respectively schematically illustrate:
Fig. 1 shows the device that flat product carries out continuous processing with top view；
The profile of the Fig. 2 secant Ⅹ-Ⅹ to mark in Fig. 1 shows the device according to Fig. 1.
Description of reference numerals
1 first annealing burner hearth (oxidation-annealing burner hearth)
2a is arranged on the second annealing burner hearth (reduction-annealing burner hearth) before annealing burner hearth 1 on conveying direction F
2b is arranged on the second annealing burner hearth (reduction-annealing burner hearth) after annealing burner hearth 1 on conveying direction F
3 annealing furnaces
4 by annealing burner hearth 1,2, the transport path of straight line
The entrance of 5 first annealing burner hearths 1
The outlet of 6 first annealing burner hearths 1
7, the inner surface of 8 longitudinal walls 9,10
9, longitudinal wall of 10 first annealing burner hearths 1
The single-nozzle of 11-16 spray nozzle device D1
The single-nozzle of 17-21 spray nozzle device D2
22 N2-feeding mechanism
23 O2-feeding mechanism
24,25 valve
α angle of incidence
β drift angle
D1, D2 spray nozzle device
The conveying direction of F flat product S
G gas beam
G1, G2 air-flow
The end face of OS flat product S
R1 second anneals the reduction atmosphere of burner hearth 2a
R2 second anneals the reduction atmosphere of burner hearth 2b
S flat product
U environment
The bottom surface of US flat product S
V is for the device carrying out continuous processing as hot rolled steel band or the flat product S that exists through cold rolling steel band
Detailed description of the invention
For to the device carrying out continuous processing as hot rolled steel band or the flat product S that exists through cold rolling steel band
V includes the first annealing burner hearth 1, be set directly at the first annealing burner hearth 1 before the second annealing burner hearth 2a and be connected on annealing burner hearth 1
The second annealing burner hearth 2b, flat product S afterwards carries out oxidation processes in the first annealing burner hearth.Flat product S moves back second
Stove thorax 2a, 2b carry out reduction treatment.Annealing burner hearth 1,2a, 2b are parts for RTF type, the indirectly annealing furnace 3 of heating,
First annealing burner hearth 1 is placed in the centre of this annealing furnace.
Extend at straight horizontal in a continuous manner by means of for the sake of clarity and here unshowned conveyer device
, by annealing burner hearth 1,2a, 2b transport path 4 on carry each pending flat product S by annealing furnace 3 and right
This entrance 5 started via the end face being formed at the first annealing burner hearth 1 from the second annealing burner hearth 2a on conveying direction F enters
In the first annealing burner hearth 1.This flat product S via be arranged on the first annealing burner hearth 1 opposition end face on outlet 6 again from
Open the first annealing burner hearth 1 and entering into directly be connected on thereafter, in the thorax room 2b of annealing furnace 3.Therefore, the first annealing burner hearth 1
Entrance 5 constitute be placed in before it second annealing burner hearth 2a outlet.Similarly, the outlet 6 of the first annealing burner hearth 1 is simultaneously
Constitute the entrance of the second annealing burner hearth 2b subsequent passed through.
Observing from the inner chamber of annealing burner hearth, the inner surface 7,8 of longitudinal wall 9,10 of the first annealing burner hearth 1 is with uniform curve
The bending of spill ground.
Spray nozzle device D1, the D2 along transport path 4 distribution it is provided with on conveying direction F in the first annealing burner hearth 1.The
One spray nozzle device D1 includes six single nozzle 11-16 to this, and second nozzle device D2 includes five single nozzle 17-
21。
The nozzle 11-16 of spray nozzle device D1 it is positioned such that, i.e. first jet 11 is close to the first annealing along transport path 4
The entrance 5 of burner hearth 1, the 6th nozzle 16 is close to the outlet 6 of this annealing burner hearth and remaining four nozzle 12-15 mutually with uniformly
Spacing be distributed between nozzle 11 and 16.
On the side on the opposite the most so the nozzle 17-21 of spray nozzle device D2 being positioned at transport path 4,
That is, first jet 17 is close to the entrance 5 of the first annealing burner hearth 1, the 5th nozzle 21 be close to the outlet 6 of this annealing burner hearth and remaining
Three nozzle 18-20 be mutually distributed between nozzle 17 and 21 with uniform spacing.Conveying direction F observes, nozzle 17-
21 be respectively disposed on by this way transport path, be respectively present between the two of which nozzle 11-16 of spray nozzle device D1
On the section of free space.
As the example of nozzle 17-21 that Fig. 1 shows spray nozzle device D2, for example formed as known structure type
The nozzle 11-21 of playpipe is connected respectively to N2-feeding mechanism 22 and O2On-feeding mechanism 23.This can be passed through valve 24,
25 are individually set to the N of nozzle 11-21 for each nozzle 11-212And O2Influx and respectively from nozzle 11-21 injection,
Admixture of gas as the gas beam G assembled.
Likewise it is possible to be separately provided incident angle α and drift angle β for each nozzle 11-21, observe (Fig. 1) in a top view
Flow to pending flat product S from the gas beam G of each nozzle 11-21 injection with angle of incidence, observe (figure in the sectional views
2) gas beam is injected on flat product S with drift angle.
Nozzle 11-16, the incident angle α that is respectively relative to the plane transverse to conveying direction F are numerically at 30 ° extremely
The angular range of 85 ° changes, wherein, corresponding to entrance 5 nozzle 11 with the incident angle α of 30 ° towards the direction of entrance 5 and
Corresponding to outlet 6 nozzle 16 in a reverse direction same under the incident angle α of 30 ° towards the direction of outlet 6.At conveying direction
Nozzle 12,13 after being connected on nozzle 11 on F is also towards the direction of entrance 5 with an incident angle α, wherein, and entering of nozzle 12
Firing angle α more than the incident angle α of nozzle 11 incident angle α of about 85 ° of nozzle 13 more than the incident angle α of nozzle 12.Therewith
On the contrary, the going out towards the first annealing burner hearth 1 as nozzle 16 of the nozzle 14,15 after being connected on nozzle 13 on conveying direction F
The direction of mouth 6.To this, numerically the incident angle α of nozzle 14 and the incident angle α of nozzle 13 are consistent and nozzle 15 respectively
The incident angle α of incident angle α and nozzle 12 is consistent.
Nozzle 17-21, the incident angle α that is respectively relative to the plane transverse to conveying direction F are numerically at 0 ° to 30 °
Angular range in change, wherein, corresponding to the nozzle 17 of entrance 5 with the incident angle α of 30 ° towards the direction of entrance 5 and right
Should in the nozzle 21 of outlet 6 in a reverse direction same under the incident angle α of about 30 ° towards the direction of outlet 6.At conveying direction
Nozzle 18 after being connected on nozzle 17 on F is also towards the direction of entrance 5 with an incident angle α, wherein, and the angle of incidence of nozzle 18
α is more than the incident angle α of nozzle 17.Nozzle 20 before being arranged on nozzle 21 on conveying direction F numerically enters with identical
Firing angle α is towards the direction of outlet 6.In contrast, be arranged on spray nozzle device D2 centre nozzle 19 with the incident angle α of 0 ° towards
Transport path 4, therefore, is at right angles to ejected into pending flat product S from the gas beam G of this nozzle 19 injection.
Simultaneously, the nozzle 11-16 of spray nozzle device D1 is towards the bottom surface US of flat product S and the nozzle of spray nozzle device D2
17-21 is towards the end face OS of flat product S.
By the setting of nozzle 11-21, nozzle 11-21 the gas beam G penetrated is collectively forming two air-flows G1, G2,
Wherein, air-flow G1 ring of eddy spirally flows to the first annealing furnace around the form in the stream whirlpool of pending flat product S
The direction of the entrance 5 of thorax 1 and in an identical manner another air-flow G2 with in the opposite direction, spiral helicine ring of eddy
Form around the stream whirlpool of pending flat product S flows to the direction of the outlet 6 of annealing burner hearth.
To this, the starting point of air-flow G1, G2 is approximately at the centre in the length of the transport path 4 in the region of nozzle 19,
This nozzle, transverse to transport path 4 injection gas beam G by by that be oppositely arranged, towards entrance 5 or outlet 6 side
To nozzle 13,14 gas beam G caused by momentum be divided into two segment fluid flows flowed in the opposite direction, by these
Segment fluid flow forms air-flow G1, G2.
New rushing is obtained by the gas beam G, air-flow G1 penetrated by any one in nozzle 13,18,12,17 and 11
Amount and extra volume flow, therefore, this air-flow, helically around transport path 4 with carry out the band steel carried thereon
The distribution of product S holds up to entrance 5 with high aggregation.
Equally, nozzle 14,20,15,21 and 16 penetrate, the gas beam G of air-flow G2 provides new fluid energy
With extra volume flow, therefore, the flat product S helically carried around transport path 4 and carrying out thereon, air-flow
The distribution of G2 arrives the outlet 6 of the first annealing burner hearth 1 with high fluid energy.
The most so it is adjusted into the gas influx of the first annealing burner hearth 1, i.e. continue in the first annealing burner hearth 1
Maintain the superpressure relative to surrounding air pressure U at least 0.001bar.
Additionally, be achieved in that the first annealing burner hearth 1 relative to before being arranged on the first annealing burner hearth 1 in the conveying direction or
Present in second annealing burner hearth 2a, 2b afterwards, contain H respectively2Reduction atmosphere R1, effective sealing of R2, i.e. particularly
The gas beam G penetrated by the nozzle 11,17 closest to entrance 5 will press to entrance 5, the reduction atmosphere of the second annealing burner hearth 2a
R1 and by closest to outlet 6 nozzle 16,21 injection gas beam G by second annealing burner hearth 2b, containing H2Reduction
Atmosphere R2 is extruded from the first annealing burner hearth 1.Additionally, nozzle 16,21, containing O2Gas beam G or 6 given out by outlet
Air-flow G2 due to H2And O2Reaction first annealing burner hearth 1 outside form H targetedly2O, therefore, reliably avoids
Enter into each reduction atmosphere R1 in each gas beam G or in air-flow G2, R2 invades in the first annealing burner hearth 1.
Claims (15)
1. flat product (S) carries out a device for continuous processing, and described device has the first annealing burner hearth of heating indirectly
(1), for flat product (S) to be passed to the outlet of the first annealing burner hearth (1) via the entrance (5) from the first annealing burner hearth (1)
(6) conveyer device that transport path (4) carries continuously and the atmosphere gas for reacting with flat product (S) are defeated
Enter the spray nozzle device (D1, D2) in the first annealing burner hearth (1), described first annealing burner hearth (1) and at least one the second annealing
Burner hearth (2) is joined directly together, and carries out oxidation processes in described first annealing burner hearth (1), enters in described second annealing burner hearth (2)
Row reduction treatment, it is characterised in that be provided with a first jet device (D1) and a second nozzle device (D2), described spray
Mouth device is arranged in described annealing burner hearth inside, in processing procedure, and the gas ejected from described first jet device
Beam (G) produces the direction, inswept pending flat product (S) of the entrance (5) towards described first annealing burner hearth (1)
First air-flow (G1) on surface, in processing procedure, the gas beam (G) ejected from described second nozzle device produces court
The second gas to direction, inswept pending flat product (S) surface of the outlet (6) of described first annealing burner hearth (1)
Stream (G2)；Being provided with an adjusting apparatus, described adjusting apparatus so adjusts the atmosphere gas flowing to described first annealing burner hearth (1)
Body, i.e. annealing described first in processing operation, burner hearth (1) is middle to be kept relative to ambient pressure (U) at least 0.001bar's
Superpressure.
Device the most according to claim 1, it is characterised in that described spray nozzle device (D1, D2) includes at least one respectively
Single nozzle (11-16；17-21), described nozzle produce assemble gas beam (G), described gas beam respectively with wait to locate
The conveying direction (F) of the flat product (S) of reason has specific angle of incidence (α).
Device the most according to claim 2, it is characterised in that by the nozzle (11-16 of spray nozzle device (D1, D2)；17-21)
The angle of incidence (α) of the gas beam (G) of injection changes in the scope of 0 ° to 90 °.
Device the most according to claim 2, it is characterised in that described nozzle (11-16 can be separately provided；17-21)
Sensing.
Device the most according to claim 2, it is characterised in that at least one of which spray of one of them spray nozzle device (D1)
Mouth (11-16) sends the gas beam (G) in bottom surface (US) direction towards pending flat product (S), and one of them nozzle
At least another nozzle (17-21) of device (D2) sends the gas in end face (OS) direction towards pending flat product (S)
Beam (G).
Device the most according to claim 2, it is characterised in that the described nozzle (11-16 of described spray nozzle device (D1, D2)；
17-21) it is connected to N2-feeding mechanism (22) and O2On-feeding mechanism (23).
Device the most according to claim 6, it is characterised in that can be separately provided and be flowed into each nozzle (11-16；17-
21) N in2Air-flow or O2Air-flow.
Device the most according to claim 1, it is characterised in that observe in the sectional views, described first annealing burner hearth (1)
Longitudinal side (7,8) bends to spill.
9. the method processed flat product (S), in the process, described flat product (S) is with continuous print side
Formula is transported to furnace outlet (6) of annealing, Qi Zhongyu from annealing burner hearth entrance (5) by the first annealing burner hearth (1) of heating indirectly
The atmosphere gas that described flat product (S) reacts is maintained in described first annealing burner hearth (1), and described atmosphere gas is via spray
Mouth device (D1, D2) is incorporated in described first annealing burner hearth (1), and described first annealing burner hearth (1) second is moved back with at least one
Stove thorax (2) is joined directly together, and carries out oxidation processes, anneal in burner hearth (2) described second in described first annealing burner hearth (1)
Carry out reduction treatment, it is characterised in that described spray nozzle device is arranged in described annealing burner hearth inside, by one of them first
Spray nozzle device (D1) produces the entrance (5) towards described first annealing burner hearth (1), the table of inswept pending flat product (S)
First air-flow (G1) in face and by means of second nozzle device (D2) produce outlet (6) towards the first annealing burner hearth (1),
Second air-flow (G2) on the surface of inswept pending flat product (S)；Anneal in burner hearth (1) described first in processing operation
Keep the superpressure relative to ambient pressure at least 0.001bar.
Method the most according to claim 9, it is characterised in that air-flow (G1, G2) with spiral-shaped around pending flat
Product made from steel (S) flows.
11. methods according to claim 9, it is characterised in that for the longitudinal length side of described first annealing burner hearth (1)
Face, the first air-flow (G1) towards entrance (5) and the second air-flow (G2) towards outlet (6) are in described first annealing burner hearth (1)
Centre be respectively provided with the starting point of air-flow.
12. methods according to claim 9, it is characterised in that by the nozzle (11-16 of described spray nozzle device (D1, D2)；
The gas beam (G) 17-21) penetrated respectively is N2/O2Mixture, the O of described mixture2Share is 0.01-20 volume %.
13. methods according to claim 9, it is characterised in that the gas penetrated respectively by described spray nozzle device (D1, D2)
The flow velocity of beam (G) is 60-180m/s.
14. methods according to claim 9, it is characterised in that the temperature of described pending flat product (S) is 450-
950℃。
15. methods according to claim 9, it is characterised in that the gas being incorporated in described first annealing burner hearth (1) is penetrated
The temperature of bundle (G) is 100-1050 DEG C.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011050243.2 | 2011-05-10 | ||
| DE102011050243A DE102011050243A1 (en) | 2011-05-10 | 2011-05-10 | Apparatus and method for the continuous treatment of a flat steel product |
| PCT/EP2012/055854 WO2012152508A1 (en) | 2011-05-10 | 2012-03-30 | Device and method for treating a steel sheet product in a continuous manner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103562419A CN103562419A (en) | 2014-02-05 |
| CN103562419B true CN103562419B (en) | 2016-11-30 |
Family
ID=
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|---|---|---|---|---|
| JPH0718339A (en) * | 1993-06-30 | 1995-01-20 | Kawasaki Steel Corp | Contactless type sealing device for atmosphere furnace |
| JPH10306328A (en) * | 1997-04-28 | 1998-11-17 | Nippon Steel Corp | Continuous annealing furnace |
| CN201024187Y (en) * | 2007-03-27 | 2008-02-20 | 宝山钢铁股份有限公司 | Annealing oven middle spacer segment atmosphere separation device |
| CN101144115A (en) * | 2006-09-14 | 2008-03-19 | 中外炉工业株式会社 | Sealing device for continuous heat treatment furnace |
| CN101501235A (en) * | 2006-04-26 | 2009-08-05 | 蒂森克虏伯钢铁股份公司 | Hot dip coating process for a steel plate product made of high strengthheavy-duty steel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0718339A (en) * | 1993-06-30 | 1995-01-20 | Kawasaki Steel Corp | Contactless type sealing device for atmosphere furnace |
| JPH10306328A (en) * | 1997-04-28 | 1998-11-17 | Nippon Steel Corp | Continuous annealing furnace |
| CN101501235A (en) * | 2006-04-26 | 2009-08-05 | 蒂森克虏伯钢铁股份公司 | Hot dip coating process for a steel plate product made of high strengthheavy-duty steel |
| CN101144115A (en) * | 2006-09-14 | 2008-03-19 | 中外炉工业株式会社 | Sealing device for continuous heat treatment furnace |
| CN201024187Y (en) * | 2007-03-27 | 2008-02-20 | 宝山钢铁股份有限公司 | Annealing oven middle spacer segment atmosphere separation device |
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