CN106170568A - For the metalliferous material of elongated flat, especially rolling aluminium ingot being carried out heat-treating methods and equipment in open hearth at the bottom of ring - Google Patents
For the metalliferous material of elongated flat, especially rolling aluminium ingot being carried out heat-treating methods and equipment in open hearth at the bottom of ring Download PDFInfo
- Publication number
- CN106170568A CN106170568A CN201580010594.7A CN201580010594A CN106170568A CN 106170568 A CN106170568 A CN 106170568A CN 201580010594 A CN201580010594 A CN 201580010594A CN 106170568 A CN106170568 A CN 106170568A
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- China
- Prior art keywords
- aluminium ingot
- ring
- rolling
- open hearth
- rolling aluminium
- Prior art date
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0037—Rotary furnaces with vertical axis; Furnaces with rotating floor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/16—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a circular or arcuate path
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/06—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated
- F27B9/10—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated heated by hot air or gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/04—Circulating atmospheres by mechanical means
Abstract
The present invention relates to a kind of in a furnace to the metalliferous material of elongated flat, especially roll aluminium ingot (2) and carry out heat-treating methods and equipment, wherein, using open hearth at the bottom of ring (1) as stove, open hearth at the bottom of this ring has that seal relative to housing (3,4), driven and the annular siege (7a) that rotates and at least one closed dress discharge openings (15 between heat insulation shell (3) and heat insulation inner shell (4)；15a、15b).In order to the rolling aluminium ingot (2) being incorporated in open hearth at the bottom of ring (1) is carried out convection type heating, first along heater element (20a, 20b that be arranged in shroud-side, that extend in furnace interior (12)；21) air being drawn up from furnace interior (1a) at the bottom of the ring surrounded by shell and inner shell (3,4) by the circulating fan (19) on that be arranged on shroud-side, to be distributed in cover cap (6) periphery is guided, hereafter allow air to flow at the inwall of shell and inner shell (3,4) extend pressure channel (22) in, from described pressure channel via seam type nozzle (23) utilize during the heating period gradually heating with the air purged rolling aluminium ingot (2) of heating rolling aluminium ingot (2).
Description
Technical field
The present invention relates to a kind of in a furnace the metalliferous material of elongated flat, especially rolling aluminium ingot being carried out at heat
The method of reason, in order to carry out temperature regulation and monitoring and control stove, this stove is connected with the process management systems of upper level
Connecing, wherein, use open hearth at the bottom of ring as stove, it has relative to housing seal between heat insulation shell and heat insulation inner shell
, the driven and annular siege that rotates, wherein, utilizing open hearth at the bottom of the ring that heat insulation cover cap closes to be configured with at least one can seal
The dress discharge openings closed and by combustion gas or electrical heating.The invention still further relates to a kind of apparatus for carrying out the process, its bag
Include open hearth at the bottom of ring.
Background technology
Open hearth at the bottom of ring is the rotary hearth furnace of a kind of specific type, wherein, two kinds of type of furnaces be the most already prior art also
And be used in steel and iron industry as annular furnace in a special way, in forging industry, heats forged block it is used for especially at this, and
The carburizing of such as driving member it is specifically designed in heat treatment.Have been known for heat treatment from document DE 8422370.7 U1
This workpiece, rotary hearth furnace in ring structures type.
As by known to DE 10 2,009 053 343 A1, up to the present, the heating of rolling aluminium ingot or homogenize
The most always carrying out in the pushing type heating furnace run with convection type heating, material moves through stove in current wherein
Housing and at this heating until the rolling temperature of 500-560 DEG C.
Here, pushing type heating furnace includes that (it has the current direction at material for the heat insulation and stove housing of lining
Front bulkhead from the point of view of on and aft bulkhead), make two longitudinal walls and conveying arrangement that two end walls are connected to each other, this conveying arrangement is used
In pending material is carried by stove housing.Conveying arrangement is configured to, and it accommodates elongated flat transverse to current direction
Material.To this end, be placed on slide block by pending material, slide block can move, generally on the track in being arranged in furnace chamber
By means of hydraulic feed device.
The door being present in stove side in order to supply and take out material has opening section, and it must at least correspond to treat
The size of the metalliferous material of the elongated flat processed.For rolling aluminium ingot (several times of its a length of thickness, and typically having
Until the thickness of 0.8m is until the width of 2.6m and until the length of 8.4m) for, it means that, even if rolling aluminium ingot is with it
The side of narrow length is moved through stove with placing vertically, and the dress discharge openings for charging and discharging must be turned on king-sized discrepancy
Mouthful.
Due to purging air strong circulation in a furnace, before it also occurs directly in the door of large-area side, because of
This purging air of some heat being up to 650 DEG C inevitable when door is opened is forced out from stove.The coldest is outside empty
Gas is flowed in furnace chamber, then must be taken in treatment temperature by this extraneous air.Also subsidiary this thing happens: in furnace chamber
The rolling aluminium ingot of the heat before being positioned at door during carrying out charging and discharging outwards radiates substantial amounts of heat, deteriorates energy the most further
Amount balance.
In order to rolling aluminium ingot is heated or homogenizes, it is also known that the soaking pit (ginseng run by means of convection type heating
See DE 2758292 C).This soaking pit has the rectangle furnace chamber limited by heat insulation outer wall, and it passes through on top to take down
Close with that put or horizontally movable stable stove cover cap.
The batch that soaking pit loads is generally between 30t and 300t, and wherein, rolling aluminium ingot is erected by the side that one is narrow
The mode being placed in corresponding receiving portion is positioned on siege, or lies against over each otherly, be contained in dividually by separator
In soaking pit.
In the case of the convection type of soaking pit heats, with high air velocity purging rolling aluminium ingot.Here, from supply
Rolling aluminium ingot is until there will be uneven heating or the superheated of local, so-called heat when taking out static rolling aluminium ingot
Point.
Rolling aluminium ingot is by means of material block pincers or the driving of movement feeding and discharging in soaking pit.If will add
The rolling aluminium ingot of heat takes out from soaking pit, it is necessary to make the stove cover cap at least extended on the partial-length and whole width of furnace chamber
Lifting or rise, wherein, the purging air of most heat leaves from stove, and this inevitably leads under the furnace temperature preset
Fall.
Summary of the invention
It is an object of the invention to, it is provided that a kind of for rolling aluminium ingot is carried out heat-treating methods and equipment, by this
Method and apparatus can will be proved the advantage of open hearth at the bottom of effective ring and at aluminum in the case of structure simplifies in steel and iron industry
The advantage being proved the heating of effective convection type in industry is integrated in one, to realize the energy expenditure that substantially reduces and variable
The method of operation.
According to the present invention, this purpose utilizes a kind of method to realize in the following way, i.e. in order to being encased in open hearth at the bottom of ring
In rolling aluminium ingot carry out convection type heating, first along that be arranged in shroud-side, to extend into furnace interior heater element to by
Circulating fan that be arranged on shroud-side, that be distributed on cover cap periphery is upwards taken out from furnace interior at the bottom of the ring surrounded by shell and inner shell
The air inhaled guides, and is hereafter allowed to be flowed in the pressure channel extended at the inwall of shell and inner shell, leads to from pressure
Road via seam type nozzle utilize during the heating period gradually heating with the air purged rolling aluminium ingot of heating rolling aluminium ingot.
Multiple circulating fans of shroud-side and heater element (such as directly carry out gas by hot-air or gas burner
Body heating or add heat pipe electrical heating by electric radiation) work in coordination with the pressure channel extended from the top down at the inwall of housing and make it possible to
Enough strong convection effect heating rolling aluminium ingots realized in open hearth at the bottom of ring by air, air in the loop of Guan Bi in stove
Portion be drawn up and be at this heat via heater element after along inwall to drawing the aluminium ingot of purging rolling simultaneously next time.Blow
Sweep air to leave from seam type nozzle with the speed of about 40m/s to 60m/s, seam type nozzle in pressure channel until arriving
It is arranged on the whole height of stove interior to distribution till below heater element.Therefore, for rolling the intensification of aluminium ingot or adding
Heat, also can realize efficient heat transfer and fast firing rate and high treating capacity.Rolling aluminium ingot is had here, erect above
The rotation of annular siege ensure that the extraordinary temperature homogeneity in annealing material.
According to the proposal of the present invention, the rolling aluminium ingot placing attitude vertically is put on annular siege so that roll the narrow of aluminium ingot
The air that circulated of longitudinal side directly purge and roll the wide rolling surface of aluminium ingot by air circulation.Thus obtain aluminum
Ingot is in all sides by circulation, and therefore this can also aid in and rolling aluminium ingot is put into the continuous print storage rack being supported on annular siege
On, it is honeycomb shape, is made up of heat-resisting cast steel.
According to the present invention, at the bottom of ring, open hearth preferably runs, in order to rolling aluminium ingot is heated to rolling temperature, and in temperature
Spending makes rolling aluminium ingot homogenize in the case of relatively improving equally, and wherein, rolling aluminium ingot passes through after the time of homogenizing expires will
Cold air is blown in furnace interior at the bottom of ring and makes surface cool down, and at the end of the cool time determined, by rolling aluminium ingot
Waste heat is again heated to rolling temperature.In order to make the rolling aluminium ingot stopping such as 20 to 25 hours in a furnace homogenize
The rolling aluminum ingot temperature of required about 600 to 650 DEG C is by thermocouple and compares end directly at stored program controller (SPS)
In detect, be also carried out wherein temperature regulation.In order to be monitored and regulate, open hearth at the bottom of ring is configured with tune independent of each other
Save region and by the regulating loop of region independence.Theoretical value required for cycle of annealing and the work of the parameter upper level by existing
Skill management system loads controls in device to corresponding stove.
Open hearth at the bottom of ring can realize the operation feeding in batch or feeding continuously in an advantageous manner.Here, can be according to stove
The size of diameter and spendable heated furnace chamber introduces rolling aluminium ingot, wherein, in the case of maximum charging, and gross weight
Measure for example, 430t, 530t or 620t.
Here, according to present invention provide that, when batch run, at the bottom of empty ring, open hearth, or rather its use space exist
It is filled when starting to anneal, and is emptied completely after reaching the rolling temperature of all of rolling aluminium ingot.For optionally
Continuous way is run, and before introducing the cold rolling aluminium ingot that need to heat, takes out the rolling aluminium ingot heated, and then makes annular siege
It is rotated further a beat.Therefore, just before taking out the ingot being heated to rolling temperature, cold ingot for new clothes provides sky
Position, to avoid disadvantageous temperature to affect.For the same reason, Guan Bi dress discharge openings after taking out every time or feeding.
After recalling, from SPS, the Annealing Scheme that need to use, begin to warm up process.Air themperature is adjusted to overtemperature
(the highest 650 DEG C) is upper and is automatically kept in this overtemperature.During the time run with overtemperature, annular siege
The most slowly rotate, to avoid the overheated and equalization temperature at narrow longitudinal side of rolling aluminium ingot, annular furnace
The rotation of bed also has significant contribution to this.
Open hearth at the bottom of ring can realize in the most constant charging and discharge position from above (such as by means of driving) or
Rolling aluminium ingot is loaded from side (such as by means of the people that operates machine).
Be from above or from side feed independently, different charging strategies can be performed in the following manner, i.e. roll
Aluminium ingot processed can circumferentially distributedly at single track or double track (that is, in outside circuit orbit and the circular rail of concentric inside
Road) on be put in furnace interior at the bottom of ring, wherein, rolling aluminium ingot wide rolling surface be spaced apart from each other, in the case of double track, now
Narrow longitudinal side is also spaced apart from each other, and wherein, can be realized the charging of double track by rolling aluminium ingot that is in a row or that stagger.Here, it is false
The size of fixed each rolling aluminium ingot is identical with weight, and feeding compared to the double track of the rolling aluminium ingot in a row parked, (charge is the most about
For 440t), rolling aluminium ingot staggers and does not has the double track charging of fixed position to be capable of the charging of maximum relative to open hearth at the bottom of ring
Amount, such as 620t.
Another measure regulation according to the present invention, periodically surveys by predetermined each of each circulating fan of shroud-side
The actual temperature of the rolling aluminium ingot in region, the rotational motion of annular siege that stops momently for this.Measured value is at SPS or upper level
Process management systems in carry out processing and be loaded into stove and control in device.
For the equipment for performing described method, according to present invention provide that, on the one hand open hearth at the bottom of ring has circulating fan,
On the other hand having the inwall not only distributing to shell but also the heater element of inwall distributing to inner shell, it is at open hearth cover cap at the bottom of ring
With driven and be distributed on ring surface that rotate annular siege is directed at, wherein, circulating fan and heater element are straight through cover cap
To reaching in furnace interior at the bottom of the ring of upper part, and open hearth at the bottom of ring is configured with the pressure channel with seam type nozzle, and pressure leads to
Road extends below heater element at the inwall of shell and inner shell.Therefore, maintainer can be well close to for flat at the bottom of ring
Unit needed for the convection type heating of stove, wherein, can dismantle and install circulating fan and heater element by means of driving simply.
Propose, be provided as the combustion of heater element for being configured with open hearth at the bottom of the ring of gas exhaust piping and cooling air delivery pipe
Air burner, it is spaced layout of turning up the soil, forms shell burner circle and inner shell burner circle, wherein, gas burner
Burner tube adjacently stretches with the inwall of shell and inner shell, slips in furnace interior at the bottom of the ring of upper part.Therefore, to place vertically
The rolling aluminium ingot that attitude is put on annular siege by its short side is added from seam type nozzle in two narrow longitudinal side
The air purging that speed is left.The air aspirated from bottom to top by circulating fan after it heats by shell and inner shell
Two burner circles at wall direct in pressure channel herein.
The one favourable design regulation of the present invention, annular siege that is driven and that rotate is bearing on fixing roller
And there is gear ring for driving, engaged with this gear ring by the little gear loaded by the electro-motor of FREQUENCY CONTROL.Therefore,
Needing the driver element that only one works according to the action principle of pin tooth, it ensures stopping or driven of rotational motion
The accurate beat in position of annular siege.Annular siege runs on roller, the described roller central authorities by its rolling bearing
Lubrication provides the long life-span.
Another design regulation of the present invention, is provided with at least in each aerated area predetermined by circulating fan
One is pressed against formula thermocouple, and this is pressed against formula thermocouple and slips in furnace interior at the bottom of ring through inner shell or shell with its measuring probe.
The formula thermocouple of being pressed against can be handled dynamo-electricly, and is on the one hand used for measuring air themperature, on the other hand for measuring rolling aluminium ingot
Temperature.
According to a kind of design of the present invention, open hearth at the bottom of ring, for from above or from side charging and discharging to
A few dress discharge openings is configured with the fire door that can move horizontally in cover cap or laterally move in the periphery of shell.It is no matter
Exist one dress discharge openings or two this openings (wherein, now an opening is used for feeding, and another opening is used for unloading
Material), charging discharge position be always to maintain consistent in the case of ensure that and feed flexibly, and all the time efficient energy-saving ground upper
Portion or laterally only opens a section the least of open hearth at the bottom of ring at cover cap at shell.
At this it is recommended that in the case of having two dress discharge openings that can be closed respectively by fire door, in order to use
The discharge openings rolling aluminium ingot in heat and the loading aperture thermal release for cold rolling aluminium ingot, arranged between two openings
There is separation weir.
Accompanying drawing explanation
This is obtained from claims and the following explanation that the present invention is simplified in the accompanying drawings the embodiment illustrated
Other bright feature and details.Wherein:
Fig. 1 is showing open hearth at the bottom of ring in the longitudinal section of the equipment that rolling aluminium ingot carries out heat treatment, its structure
There is the device for rolling aluminium ingot being carried out convection type heating；
Fig. 2 shows open hearth at the bottom of the ring of Fig. 1 with top view；
Fig. 3 shows open hearth at the bottom of ring as in preceding Fig. 1 with top view, compared to Figure 1, has for aluminum
The opening of the charging of ingot and for rolling the opening of the discharging of aluminium ingot, two openings are separated from each other；
Fig. 4 shows open hearth at the bottom of shroud-side has the ring of dress discharge openings as schematic top view, with single track side
Formula loads rolling aluminium ingot to open hearth at the bottom of ring；
Fig. 5 shows top view as in preceding Fig. 4, compared with Fig. 4, loads the most in a row in double track mode
The rolling aluminium ingot placed；And
Fig. 6 shows top view as in preceding Fig. 5, compared with Fig. 5, be not symmetry in rows but track
Place rolling aluminium ingot with staggering with track.
Detailed description of the invention
For the industrial equipment for the metalliferous material of elongated flat being carried out heat treatment, flat at the bottom of ring shown in the drawings
Stove 1, it is for rolling intensification or the heating of aluminium ingot 2 and/or homogenizing.Open hearth 1 at the bottom of ring includes shell 3 and inner shell 4, shell and interior
Shell is fully provided with insulation part 3a, 4a, such as ceramic blanket and mineral pad in inside.Close the stove of furnace interior 1a at the bottom of furnace chamber or ring
Cover cap 6 is lined with insulation part 6a equally.Furnace bottom 7 (its of bridge joint effect is played below space between shell 3 and inner shell 4
There is the insulation part 8 being made up of such as light weight fire resisting concrete) its corresponding to use space zone line in have driven
The annular siege 7a moved and rotate, annular siege is at this relative to stove housing furnace bottom 7 or rather in both sides (i.e.,
Separated part) sealed by the collecting-tank 9 of a cincture.Annular siege 7a that is driven and that rotate is bearing in fixed fortune
Driving on row roller 10 and by the electro-motor 11 by FREQUENCY CONTROL, this electro-motor is via little gear 12 and annular siege 7a
Gear ring 13 engage.It is provided with pipeline 14 in the periphery of stove housing and for introduction to cooling air and discharges waste gas.
In an embodiment, charging and the discharging of open hearth 1 at the bottom of ring realize by means of driving from above, to this end, dress discharge openings
15 can be temporarily briefly opened up by fire door 16 and be closed, and fire door 16 can be via electro-motor with rack drives in cover cap 6
Mode moves horizontally.Rolling aluminium ingot is put into annular siege 7a's in placing vertically in attitude of can learning from Fig. 1 with its narrow side
On the storage rack 17 of honeycomb like.As figure 3 illustrates, replacing filling discharge openings 15 can be juxtaposed with one another in stove cover cap
Two openings 15a, 15b are set, it can be closed the most momently or be beaten by a horizontally movable fire door 16 respectively
Opening, wherein, opening 15a is for loading cold rolling aluminium ingot, and opening 15b is for the discharging rolling aluminium ingot heated or taking-up.
Separate weir 18 and cause the thermal release of " heat " discharge position and " cold " charging position.
In order to roll intensification or the heating of aluminium ingot 2 and/or homogenize, at the bottom of ring, open hearth 1 is configured with and adds for convection type
The device of heat, in order to regulate and control, is assigned process management systems or the upper level of unshowned upper level for open hearth at the bottom of ring
Computer.As can as Fig. 2 and 3 learns, except dress discharge openings 15 or for charging and for take out opening
Outside the region of 15a, 15b, with the driven and annular siege 7a that rotates alignedly distribution ground on periphery on stove cover cap 6
Being disposed with multiple circulating fan 19, circulating fan slips in furnace interior 1a at the bottom of ring with its impeller 19a, and circulating fan terminates at and makes to erect
The position of a small amount of air is had above the rolling aluminium ingot 2 put.Extend through stove cover cap 6 ground to there also is provided and multiple be arranged in burner outer ring
With heater element 20a, 20b on burner inner ring, in gas burner form, heater element with its burner tube 21 one
Side near shell 3 shell or rather insulation part 3a and near inner shell 4 inner shell or rather insulation part 4a stretch
And approximation terminates at the height of the impeller 19a of circulating fan 19 in furnace interior 1a at the bottom of ring.Have below burner tube 21
A little spacing ground, is in the whole circumference of furnace interior 1a at the bottom of ring distribution in insulation part 3a of shell 3 and insulation part 4a of inner shell 4
Ground (the most only in addition to the region of dress discharge openings 15 or opening 15a, 15b, this is also equally applicable to heater element) structure
Making the pressure channel 22 extended towards furnace bottom 7, this pressure channel has the multiple seam type nozzles 32 being in height distributed,
The air outlet slit of described seam type nozzle is towards narrow longitudinal side 24 of the rolling aluminium ingot 2 disposed or place.
In order to carry out convection type heating, by circulating fan 19 from bottom to top when rolling aluminium ingot 2 and heating up/heat or homogenize
Ground by the support of guide plate 25, redirect to burner tube 21 from the air of furnace interior 1a suction at the bottom of ring, heats further and is closing
By the pressure channel 22 of sidepiece towards drawing next time in the loop closed.When by pressure channel 22, via seam type nozzle 23 from
Both sides rolling aluminium ingot narrow longitudinal side 24 at purging rolling aluminium ingot and therefore circulation rolling aluminium ingot wide rolling surface 26.
In the embodiment in figure 1, in order to measure and monitor the temperature of purging air, use in the beginning stream portion and backflow portion of circulating device
The thermocouple being fixedly mounted, in order to measure the temperature of rolling aluminium ingot 2, is passed through its zone of action institute each by circulating fan 19
Arranging the formula that the is pressed against thermocouple 28 run in predetermined aerated area, this is pressed against formula thermocouple from outside through inner shell 4 dynamo-electricly
Slip in furnace interior 1a at the bottom of ring with its measuring probe 27.Thus can control and regulate heating process.
After the Annealing Scheme that need to use is recalled by SPS, begin to warm up process.Heating process can so be carried out,
That is, air themperature is adjusted to overtemperature (maximum 650 DEG C) above and be automatically held in this overtemperature.With overheated temperature
During the time that degree runs, annular siege 7a rotates the most lentamente, to avoid at narrow longitudinal side 24 of rolling aluminium ingot 2
Overheated.The actual temperature of rolling aluminium ingot checks at each aerated area periodically by being pressed against formula thermocouple 28, for this
Stop the rotational motion of annular siege 7a momently.Just arrive corresponding materials theory temperature not long ago by the temperature of circulation air
Degree is reset automatically in ingot for rolling theoretical temperatures, overheated to avoid.After all of rolling aluminium ingot is in the margin of tolerance,
Start to depend on the retention time of material.Acoustically or optically illustrating end cycle, then the available driving existed will band
Rolling aluminium ingot 2 in the rolling temperatures of about 520 DEG C takes out singly and rolls.
Can be that open hearth 1 at the bottom of ring loads rolling aluminium ingot 2 according to different strategies, different Al can be considered for rolling aluminium ingot
Alloy, wherein, ingot for example, 1350mm width, 600mm thickness and 4500mm length.As figure 4 illustrates, by rolling
Aluminium ingot 2 is put in furnace interior 1a at the bottom of ring, is circumferentially distributed on a circuit orbit and its wide rolling surface 26 is spaced apart from each other.
According to Fig. 5, rolling aluminium ingot 2 (especially the most consistent with Fig. 1) is put into furnace interior at the bottom of ring on two circuit orbits
In 1a, wherein, narrow longitudinal side 24 of the rolling aluminium ingot 2 of the rolling aluminium ingot 2 of outside circuit orbit and the circuit orbit of inside
It is in having spacing in a row.Fig. 6 and preceding Fig. 5 shows the charge schedule of double track like that, but compared with Fig. 5, rolling
Aluminium ingot 2 is not situated radially in a row, but the rolling aluminium ingot 2 of the circuit orbit of concentric inner and outside circuit orbit
Rolling aluminium ingot 2 is placed in furnace interior 1a at the bottom of ring with staggering.
Therefore, charging always keep with discharge position consistent in the case of, specifically, by be configured with in an embodiment to
The dress discharge openings 15 of a few fire door 16 that can move horizontally in stove cover cap 6 is made a reservation for, and feeds flexibly.?
This, the charging of double track is capable of the treating capacity of maximum possible and the highest Weight Loaded.It is configured to utilize convection type to add
Heat heat and open hearth at the bottom of the ring of the rolling aluminium ingot that homogenizes relative to the pushing type heating furnace in the industry this also used and all
Hot stove has many advantages, the heat loss minimized that such as realized by little dress discharge openings, due to combustion air pre-
In low NOx value in the thermally-induced high thermal efficiency, aerofluxus, aerofluxus due to low O2Value and the energy loss that reduces and total
The specific energy consumption that ground is lower.
Reference numerals list
Open hearth at the bottom of 1 ring
Furnace interior at the bottom of 1a ring
2 rolling aluminium ingots
3 shells
3a insulation part
4 inner shells
4a insulation part
6 cover caps/stove cover cap
6a insulation part
7 furnace bottom
The annular siege that 7a is driven and rotates
8 insulation part
9 collecting-tanks
10 rollers/operation roller
11 by the electro-motor of FREQUENCY CONTROL
12 little gears
13 gear rings
14 pipelines (supply cooling air and/or discharge waste gas)
15 dress discharge openings
15a loading aperture
15b takes out opening
16 fire doors
17 storage racks
18 separate weir
19 circulating fans
9a impeller
20a/20b heater element (gas burner)
21 burner tube
22 pressure channels
23 seam type nozzles
24 narrow longitudinal sides
25 guide plates
26 wide rolling surfaces
27 measuring probes
28 are pressed against formula thermocouple
Claims (16)
1. in a furnace to the metalliferous material of elongated flat, especially roll aluminium ingot (2) and carry out a heat-treating methods,
In order to carry out temperature regulation and monitoring and control stove, this stove is connected with the process management systems of upper level, wherein, makees
Use open hearth (1) at the bottom of ring for stove, open hearth at the bottom of this ring have between heat insulation shell (3) and heat insulation inner shell (4) relative to
That housing (3,4) seals, the driven and annular siege (7a) that rotates, wherein, utilizes the described ring that heat insulation cover cap (6) is closed
End open hearth (1) is configured with at least one dress discharge openings (15 that can close；15a；15b) and by combustion gas or electrical heating, its
It is characterised by, in order to the rolling aluminium ingot (2) being encased in open hearth (1) at the bottom of described ring is carried out convection type heating, first along cloth
Put at shroud-side, heater element (20a, 20b of extending in described furnace interior (1a)；21) to by be arranged on shroud-side,
It is distributed in the circulating fan on the periphery of described cover cap (6) (19) from stove at the bottom of the ring surrounded by described shell and inner shell (3,4)
The air that internal (1a) is drawn up guides, and hereafter allows air to flow at the inwall of described shell and inner shell (3,4)
In the pressure channel (22) extended, gradually become during the heating period via seam type nozzle (23) utilization from described pressure channel
Heat is with the air purged rolling aluminium ingot (2) of heating rolling aluminium ingot (2).
Method the most according to claim 1, it is characterised in that described rolling aluminium ingot (2) is placed to institute to place attitude vertically
State in annular siege (7a) so that the air that narrow longitudinal side (24) of described rolling aluminium ingot is circulated directly purges and described
The wide rolling surface (26) of rolling aluminium ingot is by air circulation.
Method the most according to claim 1 and 2, it is characterised in that open hearth (1) at the bottom of described ring can be made to run, for
Described rolling aluminium ingot (2) is heated to rolling temperature and is equally used for making described aluminum in the case of temperature improves relatively
Ingot (2) homogenizes, and wherein, expires in the time of homogenizing next cold by blowing chilled air into furnace interior (1a) at the bottom of described ring afterwards
The most described rolling aluminium ingot (2), and rolled described by the waste heat of described rolling aluminium ingot (2) at the end of the cool time determined
Aluminium ingot processed is again heated to rolling temperature.
4. according to the method according to any one of the claims 1 to 3, it is characterised in that make open hearth (1) at the bottom of described ring to become
Criticize or continuous print charging runs.
Method the most according to claim 4, it is characterised in that when batch run, open hearth (1) at the bottom of empty described ring is being opened
Begin annealing time be completely filled up, and when all of rolling aluminium ingot (2) reaches rolling temperature after open hearth at the bottom of by described ring complete
Full emptying.
Method the most according to claim 4, it is characterised in that when running continuously, in the cold rolling that introducing need to be heated
Before aluminium ingot (2), take out the rolling aluminium ingot (2) heated, and hereafter make described annular siege (7a) be rotated further a joint
Clap.
7. according to any one of claim 1 to 6 or multinomial described method, it is characterised in that described rolling aluminium ingot (2) can edge
It is placed on single track or double track in furnace interior (1a) at the bottom of described ring circumferentially distributedly, wherein, wide the rolling of described rolling aluminium ingot
Face processed (26) is spaced apart from each other, and in the case of double track, the narrowest longitudinal side is also spaced apart from each other, wherein, and the charging of double track
Can by a row and put or rolling aluminium ingot (2) realization staggered from a circuit orbit to another circuit orbit.
8. according to any one of claim 1 to 7 or multinomial described method, it is characterised in that at open hearth (1) at the bottom of described ring
In heating period, annular siege (7a) rotates, continuously to avoid in the case of the temperature of raising that is that adjust and that keep
Overheated and the equalization temperature at narrow longitudinal side (24) place of described rolling aluminium ingot (2).
9. according to any one of claim 1 to 8 or multinomial described method, it is characterised in that each circulated air of shroud-side
Machine (19) subscribes a region with its sphere of action, periodically surveys the reality of the rolling aluminium ingot (2) in each described region
Temperature, the rotational motion of described annular siege (7a) of stopping momently for this.
10. according to any one of claim 1 to 9 or multinomial described method, it is characterised in that from above or be institute from side
State open hearth at the bottom of ring (1) and load described rolling aluminium ingot (2).
11. 1 kinds for the metalliferous material of elongated flat, especially roll aluminium ingot (2) and carry out the equipment of heat treatment, this equipment
Being used for performing method according to any one of claim 1 to 10, described equipment includes stove, in order to carry out temperature regulation
With monitoring and control stove, this stove is connected with the process management systems of upper level, wherein, uses at the bottom of ring flat as stove
Stove (1), open hearth at the bottom of this ring have between heat insulation shell (3) and heat insulation inner shell (4) that seal relative to housing (3,4),
Driven and the annular siege (7a) that rotates, wherein, by open hearth (1) at the bottom of the described ring that heat insulation cover cap (6) is closed have to
A few dress discharge openings (15 that can close；15a, 15b) and by combustion gas or electrical heating, it is characterised in that at the bottom of described ring
Open hearth (1) on the one hand has circulating fan (19), on the other hand has and not only distributes to the inwall of shell (3) but also distribute to inner shell
(4) heater element (20a, 20b of inwall；21), described circulating fan and heater element are at the cover cap (6) of open hearth at the bottom of described ring
With driven and be distributed on ring surface that rotate annular siege (7) is directed at, wherein, described circulating fan (19) and described add
Thermal device (20a, 20b；21) through cover cap (6) until reaching in furnace interior (1a) at the bottom of the ring of upper part and flat at the bottom of described ring
Stove is configured with the pressure channel (22) with seam type nozzle (23), and this pressure channel is at described heater element (20a, 20b；21)
Lower section extends at the inwall of described shell and inner shell (3,4).
12. equipment according to claim 11, it is characterised in that as heater element (20a, 20b；21) it is provided with combustion gas
Burner, described gas burner is spaced layout of turning up the soil, and forms shell burner circle and inner shell burner circle, wherein, combustion
The burner tube (21) of air burner adjacently stretches with the inwall of described shell and inner shell (3,4), slips into upper part
In furnace interior at the bottom of ring (1a).
13. according to the equipment described in claim 11 or 12, it is characterised in that the described driven and annular siege (7a) that rotates
It is bearing on fixing roller (10), and there is gear ring (13) for driving, by the electro-motor (11) by FREQUENCY CONTROL
The little gear (12) loaded engages with this gear ring.
14. according to any one of claim 11 to 13 or multinomial described equipment, it is characterised in that each by circulating fan
(19) in predetermined aerated area, being provided with at least one and be pressed against formula thermocouple (28), this is pressed against formula thermocouple measures spy with it
Head (27) slips in furnace interior (1a) at the bottom of described ring through inner shell or shell (3,4).
15. according to any one of claim 11 to 14 or multinomial described equipment, it is characterised in that open hearth (1) at the bottom of described ring
, for from above or from side charging and discharging at least one dress discharge openings (15；15a, 15b) being configured with can be described
The fire door (16) that moves horizontally in cover cap (6) or the fire door laterally moved at the periphery of described shell (3).
16. equipment according to claim 15, it is characterised in that the dress that fire door (16) is closed can be passed through respectively there being two
In the case of discharge openings (15a, 15b), in order to be used in the discharge openings (15b) of the rolling aluminium ingot (2) of heat and for cold
Loading aperture (15a) thermal release of rolling aluminium ingot (2), is provided with separation weir (18) between the two opening (15a, 15b).
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014203494.9 | 2014-02-26 | ||
| DE102014203494 | 2014-02-26 | ||
| DE102015203376.7 | 2015-02-25 | ||
| DE102015203376.7A DE102015203376A1 (en) | 2014-02-26 | 2015-02-25 | Method and plant for the thermal treatment of elongated, flat metallic material, in particular aluminum ingots, in a ring hearth furnace |
| PCT/EP2015/054016 WO2015128416A1 (en) | 2014-02-26 | 2015-02-26 | Method and system for thermally treating elongate, flat metallic material, in particular aluminum rolled ingots, in a ring hearth furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106170568A true CN106170568A (en) | 2016-11-30 |
| CN106170568B CN106170568B (en) | 2018-04-13 |
Family
ID=53782725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580010594.7A Expired - Fee Related CN106170568B (en) | 2014-02-26 | 2015-02-26 | For the metalliferous material in the open hearth of ring bottom to elongated flat, especially roll aluminium ingot progress heat-treating methods and equipment |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3110981B1 (en) |
| CN (1) | CN106170568B (en) |
| DE (1) | DE102015203376A1 (en) |
| WO (1) | WO2015128416A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709429A (en) * | 2018-05-31 | 2018-10-26 | 湖南省长宁炭素股份有限公司 | A kind of bell of carbon calcination single-unit furnace |
| CN113290147A (en) * | 2020-02-21 | 2021-08-24 | C.R.F.阿西安尼顾问公司 | Method for moulding sheet material into parts of complex shape with regions of different properties |
| CN113290148A (en) * | 2020-02-21 | 2021-08-24 | C.R.F.阿西安尼顾问公司 | Method for moulding sheet material into parts of complex shape with regions of different properties |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109839005B (en) * | 2017-11-27 | 2023-09-29 | 拉萨圣泽汇丰实业有限公司 | Energy-saving environment-friendly electric heating kiln system capable of efficiently utilizing intermittent power supply |
| CN109321722B (en) * | 2018-10-09 | 2023-05-05 | 嘉兴中茂工业炉有限公司 | Spheroidizing annealing furnace |
| CN109593926B (en) * | 2019-01-26 | 2024-02-06 | 江西耐乐铜业有限公司 | Convection blowing type double furnace cover structure for applying uniform furnace temperature of annealing furnace |
| DE102019108873A1 (en) | 2019-04-04 | 2020-10-08 | Schwartz Gmbh | Rotary hearth furnace for the heat treatment of metallic workpieces and the corresponding process for heat treatment |
| CN114752752B (en) * | 2022-04-28 | 2023-05-23 | 江西中臻通讯科技有限公司 | Annealing furnace for annealing production process of phosphor bronze alloy wire |
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| DE19739697C1 (en) * | 1997-09-02 | 1999-02-18 | Manfred Dr Ing Ottow | Iron ore reduction |
| DE102009053343B4 (en) | 2009-11-17 | 2012-08-30 | Otto Junker Gmbh | Pusher furnace, furnace plant and thermal treatment process |
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- 2015-02-25 DE DE102015203376.7A patent/DE102015203376A1/en not_active Withdrawn
- 2015-02-26 CN CN201580010594.7A patent/CN106170568B/en not_active Expired - Fee Related
- 2015-02-26 WO PCT/EP2015/054016 patent/WO2015128416A1/en active Application Filing
- 2015-02-26 EP EP15711059.4A patent/EP3110981B1/en not_active Not-in-force
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| US3063878A (en) * | 1958-05-07 | 1962-11-13 | Wilson Lee | Method of and apparatus for annealing |
| DE3231225A1 (en) * | 1982-08-21 | 1984-03-01 | Verwaltungsgesellschaft Heinrich Neitz GmbH & Co KG, 4930 Detmold | Heat treatment oven and performance of thermal processes for workpieces of ferrous materials and non-ferrous metals |
| JPS60262924A (en) * | 1984-06-08 | 1985-12-26 | Rozai Kogyo Kk | Rotary-hearth coil heating furnace |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709429A (en) * | 2018-05-31 | 2018-10-26 | 湖南省长宁炭素股份有限公司 | A kind of bell of carbon calcination single-unit furnace |
| CN113290147A (en) * | 2020-02-21 | 2021-08-24 | C.R.F.阿西安尼顾问公司 | Method for moulding sheet material into parts of complex shape with regions of different properties |
| CN113290148A (en) * | 2020-02-21 | 2021-08-24 | C.R.F.阿西安尼顾问公司 | Method for moulding sheet material into parts of complex shape with regions of different properties |
| CN113290148B (en) * | 2020-02-21 | 2023-11-07 | C.R.F.阿西安尼顾问公司 | Method for molding sheet material into parts of complex shape having regions of different properties |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106170568B (en) | 2018-04-13 |
| WO2015128416A1 (en) | 2015-09-03 |
| EP3110981B1 (en) | 2018-10-10 |
| DE102015203376A1 (en) | 2015-08-27 |
| EP3110981A1 (en) | 2017-01-04 |
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