CN206204351U - Annealing device - Google Patents

Annealing device Download PDF

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Publication number
CN206204351U
CN206204351U CN201621044071.2U CN201621044071U CN206204351U CN 206204351 U CN206204351 U CN 206204351U CN 201621044071 U CN201621044071 U CN 201621044071U CN 206204351 U CN206204351 U CN 206204351U
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steel
smelting furnace
area
temperature
regions
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安德鲁斯·赖纳茨
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Schwartz Co ltd
Schwartz GmbH
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Schwartz Co ltd
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    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
    • C21D1/22—Martempering
    • 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
    • C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/667—Quenching devices for spray quenching
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/673—Quenching devices for die quenching
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/78—Combined heat-treatments not provided for above
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/84—Controlled slow cooling
    • 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
    • C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
    • 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
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • 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
    • F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
    • F27B9/028—Multi-chamber type furnaces
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/60—Aqueous agents
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/613—Gases; Liquefied or solidified normally gaseous material
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/001—Austenite
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite
    • 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
    • C21D2221/00—Treating localised areas of an article
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Details (AREA)

Abstract

A kind of annealing device (100), with the first smelting furnace (110), for steel (200) to be heated to less than the temperature below AC3 temperature, it is characterised in that：The annealing device (100) also has treating stations (150) and the second smelting furnace (130), wherein described treating stations (150) make the device of the quick fast cooling of one or more second areas (220) of steel (200) including one, with second smelting furnace (130) heat supply in many ways, heat supply whereby, at least first area of the steel (200) or other regions (210) can be heated to above AC3 temperature.

Description

Annealing device
Technical field
The present invention relates to a kind of systematization annealing device in the respective region of steel.
Background technology
In this technical field, many cases of all departments are required for the high duty metal board member of light weight.Such as automobile work Industry is made great efforts to reduce the fuel consumption of vehicle always and reduces the discharge of carbon dioxide, meanwhile, improve the security of passenger.Due to this Individual reason, there is an ever-increasing vehicle body parts demand on excellent strength-to-weight ratio.These parts include special It is A and B car columns, in-car side door crash bar, foot pedal, frame unit, bumper, the crossbeam for vehicle body and roof, Yi Jiqian, Floor side member.In modern vehicle, the vehicle body with nacelle 102 is made up with bed of the hard steel of intensity about 1500MPa.Aluminium-silicon The steel plate of cladding can also be commonly used arrive for this purpose.For the purpose for producing the parts being made up of hard steel, institute The pressure of meaning technique of quenching is being developed always.Here, light material first has to be heated to austenitizing temperature, is then placed within one In pressing mold, rapid shaping, and rapid being quenched with cold water makes its temperature drop to below martensite transfor mation starting point.Thus make A kind of intensity reaches hard, the powerful martensitic structure of 1500MPa.The steel plate for hardening by this way, but, only exist There is slight elongation at break during fracture.Therefore kinetic energy during its collision can not be sufficiently converted to deformation heat.
Therefore, automobile industry makes great efforts to manufacture interval and intensity interval the vehicle body parts of several different elongations, So on the one hand, between a unitary part can just have intensity region (referring to following first interval), on the other hand, there is extending Interval (referring to following second interval).On the one hand, fundamentally wish that some is high intensity, height can be born to obtain Mechanical load, while light-weighted part.Or even high intensity part should have some soft areas on the other hand,. In the case of collision, this provides the required increased deformability in part.Only in this way, the influence of kinetic energy can disappear Dissipate, so as to minimize the acceleration of Current vehicle and remaining vehicle being applied to.In addition, modern connection method needs permission identical Or the non-hard spot of different types of material connection.For example, it is assumed that having deformable region in the part, it is necessary to use bending, Curling or the tie point of riveting.
Here, the general requirement that production is installed should be observed：The pressure quenching device should not deleteriously interference period time, and Use intact device without any restrictions and should quickly change setting, to meet a specific product.The process should be It is durable and with cost-benefit, and its process units should only take up a space for minimum.The shape of the part Should be high precision with edge.
In all known methods, the systematization heat treatment of the part is a time-consuming process step, for entirety The circulation time of firing equipment has a major impact.
In this context, the purpose of the present invention is to propose to a kind of regional for steel part systematization be heat-treated dress Put, such that it is able to obtain the region with different hardness and ductility value, so that whole annealing device is to cycle time Influence is minimized.
The content of the invention
According to the present invention, this target is realized by a kind of device with feature described in independent claims 1.The device Favourable improvement can from dependent claims 2 to dependent claims 9 in obtain.
A kind of steel are first heated to less than austenitizing temperature AC3.
Then, the steel are transferred to treating stations.At this, second area or other regions are in a process time tBIt is interior by as early as possible Cooling.In a preferred embodiment of this Equipment for Heating Processing, treating stations have a positioner, it may ensure that each Region is accurately positioned.In a preferred embodiment, second area or other regions quickly cool down in an air-flow, for example These regions are blown by air or a kind of inert gas suddenly.Therefore, in a beneficial embodiment, treating stations have a kind of to the The device that two regions and other regions are blown.The device can have, for example, one or more nozzles.In another beneficial reality Apply in example, an air-flow blows second area or other regions, water, for example, being added to air-flow with atomised form.Therefore, having at one In the embodiment of benefit, the device has one or more atomizers.Due to blowing and the airflow function of mixing water, second area or The dissipation of heat in other regions increases.In process time tBIt is last, second area or other regions reach cooling and stop temperature θS。 Process time tBGenerally in the range of several seconds.On this point, second area or other regions can be cooled to martensite and turn Become below starting point Ms.For example, for current automobile steel 22MnB5d martensite transfor mation starting points Ms about at 410 DEG C.First Region or other regions are not subjected to other specially treateds in treating stations, in other words, their blowing fluids are not passed through to appoint yet What his special measure is heated or cooled to it.First area or other regions in treating stations slow cooling, such as by nature Convection current.The measure that the temperature loss in first area or other regions is reduced in treating stations is taken, is had proved to be favourable and is arranged Apply.These measures, for example, the insulation of the treating stations of the device of heat radiation reflector and/or first area or other areas adjacents Surface.
Then, in process time tBDuring coda, steel are transferred to the second smelting furnace.Whole steel are all in this second smelting furnace Heating.Heating can be carried out, such as in the way of heat radiation.In this process, in retention time t130Period steel still exist Second smelting furnace, this is built upon such a mode, and the temperature field of a region or multiple is higher than AC3 temperature.Because from above The step of second area start have a much lower temperature than first area or other regions in retention time T130, because They are not up to AC3 temperature in the second smelting furnace when retention time t130 ends for this.Then, steel can be transferred to one Individual to press instrument of quenching, wherein first area or other regions is complete austenitizing, and second area or other regions do not have Ovshinsky Body, so, due to quenching technique in subsequent pressure in be quenched, first area or other regions form the martensite knot of high intensity Structure.Because, in process of production without austenitizing, they have a low intensive ferrite-pearl for second area or other regions High ductibility after body of light structure and technique of being quenched through overvoltage.
After steel place several seconds in treating stations, there is a positioner to determine being accurately positioned for different zones, he Can be transferred to the second smelting furnace of a special installation not used for the different disposal of different zones.In one embodiment In, whole furnace chamber only one of which melt temperature θ4, in other words, a substantially homogeneous temperature higher than austenitizing temperature AC3 Degree.Clear-cut boundary line, respective regions are it is achieved that due to the less temperature difference between the two regions, the warpage of part is most Smallization.The relatively small temperature differentials of steel have been processed further favorable influence to forcing press.
In one embodiment, a continuous smelting furnace is set to the first smelting furnace.Generally, continuous oven have a Large Copacity and It is particularly suitable for large-scale production, because they can be loaded and be operated in a simple mode.But, a batch (-type) Stove a, for example, batch-type furnace, it is also possible to as the first smelting furnace.
In one embodiment, the second smelting furnace is an easily continuous smelting furnace.
If the first smelting furnace and the second smelting furnace are all set to continuous smelting furnace, first area or other regions or second area or The necessary retention time in other regions can obtain the function of the part by setting transfer rate and particular melt length. In this way it is possible to the influence of the cycle time to whole production line is prevented, including an annealing device and then Pressure quench treatment.
In an optional embodiment, the second smelting furnace is a batch smelter, for example, a box smelting furnace.
In a preferred embodiment, treating stations have a device quickly to be cooled down the second of one or more steel Region.In a preferred embodiment, the equipment has a nozzle, its nozzle blowout vaporizing fluid, for example, air or inertia Gas such as nitrogen, to the second area of steel or other regions.For this purpose, in a beneficial embodiment, device There are one or more atomizers.Due to water is mixed into air-flow, the heat partition in second area or other regions can increase.
In another embodiment, second area or other regions are cooled by the various modes of heat transfer, for example, make They contact the punch press or multiple punch presses far below steel temperature.Therefore, punch press can be good and/or direct or indirect by thermal conductivity The metal of cooling is made.It is also possible that with reference to cooling technology.
By means of according to annealing device of the present invention, with one or more first and/or second area steel Material, the shape for also having complexity can assign a cost for appropriate temperature profile with cost savings, because different regions can To bring necessary process quickly, with sharp keen critical temperature.
According to the present invention, the number of the second area according to needed for annealing device of the present invention makes setting substantially any Amount is possibly realized.In this process, second area and other regions will not austenitizing also, after even pressure is quenched, they have The relatively low intensity level similar with the raw intensity values of untreated steel.The geometry of selected subregion can also be free Selection.Point-like or line-like area and big surface region, for example, can create.The positioning in region is immaterial.Secondth area Domain can completely be surrounded by first area, or be in the edge of steel.Even one piece full surface treatment is also possible.Steel part Particular orientation relative to traffic direction phase it is not necessary that.The quantity of the steel part for the treatment of is to quench instrument or to pass through in compression simultaneously The conveying technology limitation of whole annealing device.Pre-process the steel for being formed equally possible.The three-dimensional shaped of preformation steel Surface only produces more design works to create reverse side.
Additionally, the annealing device for having existed can be beneficial by being applicable.Therefore, in the routine of only one of which smelting furnace It is all to do is to installation process station and the second smelting furnace after a stove in the case of annealing device.According to existing smelting furnace Configuration, it can also be divided into such a mode, and stove originally is converted into the first smelting furnace and the second smelting furnace.
Brief description of the drawings
The characteristics of invention that extra advantage, this dependent claims and performance in a preferred embodiment are produced and reality Improve, referring to the following drawings.
The following drawings shows：
Fig. 1 has typical temperature profile of the steel of first area and second area in heat treatment process,
A kind of Fig. 2 annealing devices of the invention, a top view as a schematic diagram,
Fig. 3 another annealing devices of the invention, a top view as a schematic diagram,
Fig. 4 another annealing devices of the invention, a top view as a schematic diagram,
A kind of Fig. 5 annealing devices of the invention, a top view as a schematic diagram,
Fig. 6 another annealing devices of the invention, a top view as a schematic diagram,
Fig. 7 another annealing devices of the invention, a top view as a schematic diagram,
Reference numerals list
100 annealing devices
110 first smelting furnaces
130 second smelting furnaces
131 rows of unloading stand
150 treating stations
152 point-like infrared radiators
153 heating fields
160 press instrument of quenching
161 containers
200 steel
210 first areas
220 second areas
D main stream lines direction
Ms Ms (martensite start) points
TB treatment temperatures
t110Retention time in first smelting furnace
t120Steel enter the transfer time for the treatment of stations
T121Steel enter the transfer time of the second smelting furnace
T130Retention time in second smelting furnace
T131Steel enter the transfer time for pressing instrument of quenching
T150Retention time in treating stations
T160The retention time that pressure is quenched in instrument
θSCooling stops temperature
θ3The internal temperature of the first smelting furnace
θ4The internal temperature of the second smelting furnace
θ200,100The temperature curve of steel in first smelting furnace
θ210,150The first area temperature curve of steel in treating stations
θ220,150The second area temperature curve of steel in treating stations
θ210,130The first area temperature curve of steel in second smelting furnace
θ220,130The second area temperature curve of steel in second smelting furnace
θ200,160Press the temperature curve of steel in instrument of quenching.
Specific embodiment
Fig. 1 shows the steel 200 with first area 210 and second area 220 by means of method of the present invention Typical temperature profile in heat treatment process.Steel 200 are heated to the temperature root less than AC3 temperature in the first smelting furnace 110 According to the temperature curve θ that schematic diagram is drawn200,110Retention time t in the first smelting furnace110It is interior.Then, in transfer time t120Phase Between steel 220 be transferred to treating stations 150.In this process, steel radiating.In treating stations, the second area 220 of steel 220 Rapid cooling, second area 220 is according to curve θ220,150Cooling.Air blowing process ends at after process time tB, only several seconds, The size of thickness and second area 220 according to steel 200.In first approximation, in treating stations 150, process time tB Equal to retention time t150.Second area 220 reaches cooling and stops temperature θ nowS.Meanwhile, in the first area for the treatment of stations 150 210 temperature is according to the curve θ for drawing210,150Decline, first area 210 is not in the region of cooling device.T between when treatedB At the end of, in transfer time t121Steel 200 are transferred to the second smelting furnace 130, continued down.In the second smelting furnace 130, retaining Time t130, the temperature of the first area 210 of steel 200 is according to the curve θ for substantially drawing210,130Cooling, in other words, steel The temperature of 200 first area 210 is heated to more than AC3 temperature.In retention time t130, the second area 220 of steel 200 Temperature also can be according to the temperature curve θ for drawing220,130Raise, be not up to AC3 temperature.Second smelting furnace 130 has no special equipment pair Multiple regions 210,220 carry out different disposal.Only one of which melt temperature θ4, that is to say, that a substantially uniform temperature θ4, The whole inside of the second smelting furnace 130 is arranged on, the temperature exceedes austenitizing temperature AC3.Because in the second smelting furnace 130 Two regions or other regions are in retention time t130Incipient stage, than first area or other regions have a large amount of lower temperatures and Because two regions are all done in the same fashion heating in the second smelting furnace 130, they have not at the end of retention time t130 Same temperature.Retention time t of the steel 200 in the second smelting furnace 130130Temperature be higher than AC3 temperature, second area or other areas Domain does not reach AC3 temperature on this point in time.
Then, in transfer time t131Steel are transferred to a pressure being arranged in forcing press (not shown) and quench instrument 160.In transfer time t131During, steel 200 are lowered the temperature again, and the temperature in such first area or other regions can also be dropped to Below AC3 temperature.But this region or these region complete austenitizings, when they leave the second smelting furnace 130, so exist Retention time t160Period, they were converted into a hard martensitic structure in pressure quenches instrument 160.
Clearly boundary can be obtained individual region 210,220 in two regions 210 between 220, due to the less temperature difference, The warpage of steel 200 is minimized.The smaller temperature difference of steel 200 has been processed further favorable influence to what pressure quenched instrument 160. The necessary retention time t of the steel 200 in the second smelting furnace 130130Can be with used setting transfer velocity and the chi of the second smelting furnace 130 Modest ability degree realizes the length function of steel.Any influence of the annealing device 100 on cycle time is all minimized, it might even be possible to complete Ignore entirely.
Fig. 2 is according to a kind of 100,90 ° of placements of annealing device of the present invention.The annealing device 100 has one Loading depot 101, by it, steel are admitted to the first smelting furnace 110.In addition, annealing device 100 have treating stations 150 and-be arranged on The-the second smelting furnace 130 behind its main flow direction D.Continue main flow direction D down, there is one to be equipped with location equipment and (do not show Show) the row of unloading station 131.Main flow direction is rotated by 90 ° now, so that in forcing press (not shown) presses instrument 160 of quenching tight With thereafter, steel 200 are quenched by pressure herein.In the first smelting furnace 110 and the axis direction of the second smelting furnace 130, there is a container 161, the part being rejected can be placed.Under this arrangement, the first smelting furnace 110 and the second smelting furnace 120 are particularly preferred as continuous smelting furnace, For example, roller hearth furnace.
Fig. 3 is an annealing device 100 of straight line.The annealing device 100 has loading depot 101, by it, Steel are admitted to the first smelting furnace 110.In addition, annealing device 100 have treating stations 150 and-be arranged on its main flow direction D after - the second smelting furnace in face.Continue along main line D directions, there is the row of a unloading station 131 for being equipped with location equipment (not shown).Now again Secondary a pressure followed by (not shown) in forcing press is quenched instrument 160 along main flow direction, and steel 200 are quenched by pressure herein.Rotation Turn 90 ° to the row of unloading station 131, there is a container 161 the inside, can place the part being rejected.Under such arrangement, the first smelting furnace 110 and second smelting furnace 120 can be provided as continuous smelting furnace, for example, roller hearth furnace.
Fig. 4 is another variant of annealing device of the present invention 100.Annealing device 100, successively, with one Individual loading depot 101, by it, steel are admitted to the first smelting furnace 110.In this embodiment, the first smelting furnace 110 is preferably arranged work It is a continuous smelting furnace.In addition, the Equipment for Heating Processing 100 has a treating stations 150, in this embodiment, unloaded with one Row station 131 combines.The row of unloading station 131 can have, for example, a clamping device (not shown).The row of the unloading station 131 is using clamping Device, for example, removing steel 200 from the first smelting furnace 100.With the heating that second area or other regions 220 cool down It is carried out, and steel or steel 200 are placed in the second smelting furnace 130, and second smelting furnace 130 is arranged to relative first The axis of smelting furnace 110 is rotated by 90 °.In this embodiment, the second smelting furnace 130 also provides a batch-type furnace, such as several furnace chambers. The retention time t of the second smelting furnace 130 in the second smelting furnace 130130After end, steel 200 are by the row of unloading station 131 from the second smelting furnace 130 remove and are placed on an opposite pressure and quench in instrument 160, and opposite pressure instrument 160 of quenching (does not show installed in forcing press Show) in.Therefore, the row of unloading station 131 can have a positioner (not shown).In the axis direction of the first smelting furnace 110, the row of unloading station Behind 131, container 161 is provided with, the part being rejected can be placed.In this embodiment, main stream line direction D is through 90 ° of rotations. In this embodiment, treating stations 150 do not need the second alignment system.Other this embodiment is favourable, if in the first smelting furnace 110 axis direction does not have enough spaces, for example, producing in hall.In this embodiment, the second area of steel 200 220 cooling procedure can also occur between the row of unloading station 131 and the second smelting furnace 130, so there is no need to a fixed place Reason station 150.One cooling device a, for example, blow-out nozzle, is integrated in the chucking device.The row of unloading station 131 ensure that steel Material 200 is transported to the second smelting furnace 130 and passes to pressure from the first smelting furnace 110 to be quenched in instrument 160 or container 161.
In this embodiment, pressing the position of quench instrument 160 and container 161 can change, referring to Fig. 5.In this implementation In example, main flow direction D performs two deformations for substantially 90 °.
A kind of annealing device shown in Fig. 6, the limited space that it sets the annealing device in：It is corresponding to Fig. 4 Embodiment compare, the second smelting furnace 130 has been moved into the second plane on the first smelting furnace 110.In this embodiment, steel The cooling procedure of 200 second area 220 can occur between the row of unloading station 131 and the second smelting furnace 130, so there is no need to one The treating stations 150 of individual fixation.Again, the first smelting furnace 110 is set to continuous smelting furnace and the second smelting furnace is set to batch-type furnace, can More several smelting furnaces are set with expecting, can be benefited.
Finally, Fig. 7 is last embodiment of annealing device of the present invention.With the embodiment pair shown in Fig. 6 Than pressing the position of quench instrument 160 and container 161 to be changed.
Preferred embodiments of the present invention are the foregoing is only, embodiments of the present invention and protection model is not thereby limited Enclose, to those skilled in the art, should can appreciate that done by all utilization description of the invention and diagramatic content Scheme obtained by equivalent and obvious change, should be included in protection scope of the present invention.

Claims (9)

1. a kind of annealing device (100), with the first smelting furnace (110), for steel (200) to be heated to less than AC3 temperature Following temperature, it is characterised in that：
The annealing device (100) also has treating stations (150) and the second smelting furnace (130), wherein the treating stations (150) are wrapped Include a device for making one or more second area (220) fast coolings of steel (200), and second smelting furnace (130) Heat supply in many ways, whereby heat supply, at least first area of the steel (200) or other regions (210) can be heated to Higher than AC3 temperature.
2. annealing device (100) according to claim 1, it is characterised in that：
Described device is used to make one or more second area (220) fast coolings of the steel (200), and described device has One nozzle, the nozzle is blown into air-flow to the second area or other regions (220) of steel (200).
3. annealing device (100) according to claim 1 and 2, it is characterised in that：
Described device is used to make one or more second area (220) fast coolings of steel (200), and described device has one Nozzle, the nozzle is blown into the air-flow of mixing water to the second area or other regions (220) of steel (200).
4. annealing device (100) according to claim 1 and 2, it is characterised in that：
For the device of one or more second area (220) fast coolings of steel (200) to be had into punch press, for it is described The second area of steel (200) or other regions (220) are in contact.
5. annealing device (100) according to claim 4, it is characterised in that：
The punch press being in contact for the second area with the steel (200) or other regions (220) is provided so that it Can be cooled.
6. annealing device (100) according to claim 1 and 2, it is characterised in that：
The treating stations (150) are with a positioner.
7. annealing device (100) according to claim 1 and 2, it is characterised in that：
Second smelting furnace (130) is heated to substantially homogeneous temperature θ4。
8. annealing device (100) according to claim 1 and 2, it is characterised in that：
The treating stations (150) are with heat reflector.
9. annealing device (100) according to claim 1 and 2, it is characterised in that：
The treating stations (150) are with heat insulation wall.
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