CN106825044B - A kind of TiAl alloy plate hot rolling device and hot-rolling method - Google Patents

A kind of TiAl alloy plate hot rolling device and hot-rolling method Download PDF

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Publication number
CN106825044B
CN106825044B CN201710186975.1A CN201710186975A CN106825044B CN 106825044 B CN106825044 B CN 106825044B CN 201710186975 A CN201710186975 A CN 201710186975A CN 106825044 B CN106825044 B CN 106825044B
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rolling
roller
hot
furnace
temperature
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CN106825044A (en
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曾尚武
赵爱民
张磊
江海涛
罗琳
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Beijing Guowang Fuda Technology Development Co Ltd
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Beijing Guowang Fuda Technology Development Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B3/00Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences Rolling of aluminium, copper, zinc or other non-ferrous metals
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/30Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process
    • B21B1/32Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
    • B21B1/34Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by hot-rolling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B37/00Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74Temperature control, e.g. by cooling or heating the rolls or the product
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B2261/00Product parameters
    • B21B2261/20Temperature

Abstract

The present invention relates to a kind of TiAl alloy plate hot rolling device and hot-rolling methods.The device includes with lower component: roller-way, also successively includes being set to insulation cover and roller-bottom type tunnel heat-treatment furnace after the second heating furnace by the roller-way, the first heating furnace on the roller-way, milling train preincubation cover, hot-rolling mill, milling train;First heating furnace is roller-bottom type tunnel heating furnace;Insulation cover is located at the entrance side and outlet side of the hot-rolling mill after the milling train preincubation cover and the milling train;Roller-bottom type tunnel heat-treatment furnace successively includes high-temperature region, middle warm area and low-temperature space.The hot-rolling method can effectively solve the problem that the problems such as temperature drop and operating difficulties during TiAl alloy plate rolling, especially large scale TiAl alloy plate.

Description

A kind of TiAl alloy plate hot rolling device and hot-rolling method
Technical field
The present invention relates to the rolling devices and hot-rolling method of a kind of TiAl alloy plate, refer in particular to a kind of rolling large scale TiAl alloy plate hot-rolling arrangement and its hot-rolling method.
Background technique
TiAl alloy is a kind of novel light heat resistant structure material, and specific gravity, can using temperature less than the 50% of nickel-base alloy Up to 700 DEG C -900 DEG C, there are the feature performance benefits such as lightweight, high-strength, anti-corrosion, wear-resisting, high temperature resistant, be increasingly becoming the neck such as Aeronautics and Astronautics The important candidate materials in domain.The plate of TiAl alloy other than being expected to be directly used as structural material, be also used as superplasticity at The preforming material of shape, and the wing of the components and super speed vehicle for making near-net-shape Aeronautics and Astronautics engine, Shell etc..
The preparation of TiAl alloy plate mainly has ingot metallurgy method and powder metallurgic method.The preparation of ingot metallurgy method is first melting TiAl alloy ingot casting is prepared, is then handled using hot isostatic pressing and homogenizing annealing, then forging refinement cast sturcture, most laggard Row rolling.A kind of advanced TiAl alloy plate rolling has been invented on the basis of ingot metallurgy method by Austrian Plansee AG company Technology (ASRP) successfully rolls out the full-size of TiAl alloy plate up to 1800mm × 500mm × 1mm.Domestic Beijing section The units such as skill university, Harbin Institute of Technology have carried out ingot metallurgy method TiAl alloy plate preparation research, roll out ruler respectively Very little is 360mm × 100mm × 3.5mm high niobium Ti Al alloy plate and 700mm × 200mm × 2mm β-gamma-TiAl alloy plate Material.Powder metallurgic method is to pass through Ti and Al element mixed powder the process near-net-shape such as to suppress, squeeze, roll as mixed powder Plate, the plate after forming generate TiAl alloy by priming reaction in subsequent sintering, hot pressing or hot isostatic pressing, or Hot rolling is carried out again after person's pre-alloying powder hot isostatic pressing consolidation.The units such as domestic Central South University have been carried out last metallurgy method TiAl and have been closed Golden plate material preparation research, size are relatively small.As described above, the domestic TiAl alloy board dimension rolled is smaller, with state There is also larger gaps outside.Therefore, it is highly desirable to carry out the research of large scale TiAl alloy plate technology of preparing.
Up to the present, it is not still well solved the problem of TiAl alloy technology of preparing, especially It is easy to crack when preparing plate using hot rolling technology, makes to obtain large scale, high quality plate extremely difficult.Reason is on the one hand main If TiAl alloy belongs to less-deformable alloy, be not suitable for high temperature rolling forming.It on the other hand is TiAl alloy deformation temperature window Very narrow, the control of nearly isothermal pack rolling technique is more difficult.In order to reduce the temperature drop of slab in the operation of rolling, jacket is generallyd use Mode roll, heat preservation is melted down between passage.As ingot metallurgy method is (disclosed in Chinese patent CN201410035393.X " a kind of high " a kind of uniform formation disclosed in the preparation method of Nb TiAl-base alloy plate " and Chinese patent application CN201610265054.X TiAl alloy plate preparation method ") and powder metallurgic method (" one disclosed in Chinese patent application CN201010144977.2 " a kind of powder metallurgy disclosed in the preparation method of kind of TiAl-base alloy rolled plate " and Chinese patent CN201210131206.9 The preparation method of Ultra-fine Grained TiAl base alloy plate ").But the above method is all made of jacket mode and carries out low speed rolling, it can not Avoid the temperature drop of TiAl alloy plate temperature gradient and sheet edge caused by the rolling direction, especially large scale TiAl plate Material.Meanwhile plate and roll contact make plate surface sharp temperature drop.In addition, by large scale TiAl alloy slab between passage Or there are certain temperature drops when coming out of the stove for plate, take out from furnace or melt down heat preservation and also bring difficulty to operation.
Summary of the invention
In order to solve the above technical problems, the object of the present invention is to provide a kind of TiAl alloy plate hot rolling device and hot rolling sides Method, the problems such as can effectively solve the problem that the temperature drop and operating difficulties during TiAl alloy plate rolling, especially large scale TiAl Sheet alloy.
In order to achieve the above object, the present invention provides a kind of TiAl alloy plate hot rolling device, which includes With lower component: roller-way also successively includes being set to the second heating furnace by roller-way, the first heating furnace on the roller-way, milling train Insulation cover and roller-bottom type tunnel heat-treatment furnace after preincubation cover, hot-rolling mill, milling train;
First heating furnace is roller-bottom type tunnel heating furnace;
Insulation cover is located at the entrance side and outlet side of hot-rolling mill after milling train preincubation cover and milling train;
Roller-bottom type tunnel heat-treatment furnace successively includes high-temperature region, middle warm area and low-temperature space.
In above-mentioned apparatus, it is preferable that be equipped with certain spacing between all parts.
In above-mentioned apparatus, it is preferable that the spacing of the second heating furnace and the first heating furnace is 1m-10m;First heating furnace with The spacing of milling train preincubation cover is 0.1m-2m;The spacing of milling train preincubation cover and hot-rolling mill is 0.5m-5m;Hot-rolling mill and milling train The spacing of insulation cover is 0.5m-5m afterwards;The spacing of insulation cover and roller-bottom type tunnel heat-treatment furnace is 0.1m-2m after milling train.
In above-mentioned apparatus, it is preferable that hot-rolling mill includes working roll, secondary heating mechanism and two guide devices;
Working roll is used to carry out the rolling of plate, includes at least a top working roll and a bottom working roll, upper work Roller is correspondingly arranged up and down to be used cooperatively with bottom working roll, and the upper surface of bottom working roll and the upper surface of roller-way are located at same water In plane;
Secondary heating mechanism is arranged near the top working roll and bottom working roll, continuous online for carrying out to working roll Heating;The heating method of secondary heating mechanism is continuous online high-frequency induction heating, can be by top working roll and bottom working roll table Face temperature is heated to 300 DEG C -600 DEG C and is kept;
Two guide devices are located at the inlet and exit of hot-rolling mill, so that slab or rolled piece press set direction With state accurately, steadily into and out roll.
In above-mentioned apparatus, it is preferable that the roll surface length of the top working roll and bottom working roll that are heated is its barrel length 90%-95%.
In above-mentioned apparatus, it is preferable that the top and two sides of the first heating furnace are equipped with several first heaters;Roller bottom The top and two sides of each warm area of formula tunnel heat-treatment furnace are equipped with several first heaters, wherein first heater is The device that can be arbitrarily heated, also with no restriction to the quantity of first heater;
Hot-rolling mill is four-high reversing mill, and each working roll is provided with positive and negative roller.
In above-mentioned apparatus, it is preferable that roller-way includes furnace rolls road and the outer roller-way of furnace;
Furnace rolls road includes several roller-way groups, wherein can individually rotate between each roller-way group or at least two groups link, often A roller-way group can forward or reverse, velocity of rotation 0.2m/min-2m/min;
The outer roller-way of furnace includes several roller-way groups, and the outer roller-way of the furnace of hot-rolling mill entrance side and outlet side is able to individually just Turn or inverts, velocity of rotation 2m/min-20m/min;Wherein, roller-way group includes 2-7 root roller-way.
The present invention also provides a kind of hot-rolling method of TiAl alloy plate, which includes the following steps:
(1) raw material provides: providing TiAl alloy slab, coats high temperature coatings in the surface of TiAl alloy slab;
(2) it heats: TiAl alloy slab being placed in the second heating furnace and is heated, transport into first through roller-way after coming out of the stove and add In hot stove, heats and keep the temperature again;
(3) warm operation roller: before TiAl alloy slab goes out the first heating furnace, by secondary heating mechanism to hot-rolling mill The surface of top working roll and bottom working roll is preheated;
(4) it rolls: after the TiAl alloy slab after step (2) reaches the temperature of positive rolling, carrying it to hot rolling Positive rolling, subsequently enters the high-temperature region of roller-bottom type tunnel heat-treatment furnace, heats and keep the temperature, reach the temperature inversely rolled on machine Afterwards, it comes out of the stove and is inversely rolled in hot-rolling mill, is again introduced into the first heating furnace, heat and keep the temperature, this process is known as one A rolling backhaul, through multiple rolling backhauls by TiAl alloy slab rolling at the plate of target thickness;
(5) cooling: plate successively being passed through to high-temperature region, middle warm area and the low-temperature space of roller-bottom type tunnel heat-treatment furnace, is carried out It is cooling, complete course of hot rolling.
In the above-mentioned methods, it is preferable that in step (2), heating is heated to 1100 DEG C -1200 in the second heating furnace DEG C, the time of heat preservation is 20min-60min.
In the above-mentioned methods, it is preferable that in step (3), preheating is heated to 300 DEG C -600 DEG C.To top working roll under Working roll preheat slab or rolled piece surface when can be avoided rolling and contacts the urgency for causing slab or rolled piece with the roll surface of low temperature Acute temperature drop.
In the above-mentioned methods, it is preferable that in step (4), rolling is at least 1 passage, and positive and reverse rolling temperature is γ+α two-phase section or γ+alpha+beta threephase region, soaking time 5min-20min, wherein the TiAl alloy of heterogeneity system has Different γ+α two-phase section or γ+alpha+beta threephase regions, the i.e. TiAl alloy of heterogeneity system, the temperature of forward direction rolling and reverse The temperature of rolling is different.
In the above-mentioned methods, it is preferable that in step (5), the furnace temperature of high-temperature region is higher than 1000 DEG C, preferably 1000 DEG C- 1350℃;The furnace temperature of middle warm area is 650 DEG C -1000 DEG C;The furnace temperature of low-temperature space is less than 650 DEG C.
In the above-mentioned methods, it is preferable that in heating and insulating process, furnace rolls road keeps 0.2m/min-2m/min speed Degree carries out forward or reverse.Furnace rolls road keeps low speed forward or reverse, can eliminate the black print in slab lower surface, guarantees that temperature is equal Even property.
In the above-mentioned methods, it is preferable if slab reaches the temperature inversely rolled after forward direction rolling, then directly reverse Rolling, and enter in the first heating furnace and heat and keep the temperature, it is heated without entering in roller-bottom type tunnel heat-treatment furnace.
In the above-mentioned methods, it is preferable if slab reaches the temperature of positive rolling after inversely rolling, then directly positive Rolling, and into heating in the high-temperature region of roller-bottom type tunnel heat-treatment furnace and heat preservation, it is heated without entering in the first heating furnace.
In the above-mentioned methods, it is preferable that the time of heat preservation is 5min-20min.
In the above-mentioned methods, it is preferable that when first block of slab of rolling, next block of slab enter in the first heating furnace heating and Heat preservation, when entering heating in the high-temperature region of roller-bottom type tunnel heat-treatment furnace after first piece of slab rolling and keeping the temperature, next block of plate Base enters hot mill rolling, it can two pieces or muti-piece slab carry out alternately heating, heat preservation and rolling.
TiAl alloy plate hot rolling device provided by the invention arranges that TiAl alloy plate hot rolling method is adopted using close-coupled With online heat preserving method, have the following beneficial effects:
1. not only shortening slab or the rolled piece shipping time outside furnace, but also in slab or workpiece front end feed mill, roll Among part and tail portion is still in insulation cover;
2. the working roll directly contacted with slab or rolled piece is heated, so invention production TiAl alloy plate can significantly drop The temperature gradient of its low three-dimensional (rolling to-length direction, transverse direction-width direction, thickness direction), and traditional packet is omitted Cover step;
3. large scale TiAl plate can be rolled;
4. can be improved the surface quality and production efficiency of TiAl plate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the TiAl alloy plate hot rolling device provided in embodiment 1.
Fig. 2 is the flow chart of the TiAl alloy plate hot rolling method provided in embodiment 2.
Main Reference symbol description:
1 second heating furnace, the outer roller-way of 2 furnaces, 3 first heating furnaces, 41 first heaters, 42 secondary heating mechanisms, 51 roll Machine preincubation cover, insulation cover after 52 milling trains, 6 hot-rolling mills, 71 top working rolls, 72 bottom working rolls, 8 guide devices, 9 roller-bottom type tunnels Heat-treatment furnace, 10 furnace rolls roads.
Specific embodiment
In order to which technical characteristic of the invention, purpose and beneficial effect are more clearly understood, now to skill of the invention Art scheme carries out described further below, but should not be understood as that limiting the scope of the invention.
Embodiment 1
A kind of TiAl alloy plate hot rolling device is present embodiments provided, structure is as shown in Figure 1.The device includes roller Road, and it is set in turn in the second heating furnace 1, the first heating furnace 3, milling train preincubation cover 51, hot-rolling mill 6, milling train by roller-way Insulation cover 52 and roller-bottom type tunnel heat-treatment furnace 9 afterwards;
Roller-way includes furnace rolls road 10 and the outer roller-way 2 of furnace, wherein furnace rolls road 10 includes several roller-way group (each rollers Road group includes 5 roller-ways), wherein it can individually be rotated between each roller-way group or at least two groups linkage, each roller-way group can rotate forward Or reversion, velocity of rotation 0.6m/min;The outer roller-way 2 of furnace before and after hot-rolling mill can be rotated individually respectively, can forward or reverse, Velocity of rotation is 12m/min;
The spacing of second heating furnace 1 and the first heating furnace 3 is 2m;
First heating furnace 3 is roller-bottom type tunnel heating furnace, is inside equipped with several first heaters 41 and (is installed on first to add Top and two sides in hot stove 3, in use, the first heater 41 of top and two sides are respectively perpendicular to the upper of slab Surface and side surface), and be 0.1m with the spacing of milling train preincubation cover 51;
Hot-rolling mill 6 be four-high reversing mill, working roll barrel length be 1450mm, and each working roll be provided with it is positive and negative Roller, positive and negative bending roller force are -200KN to+200KN, which includes 71, bottom working rolls 72 of a top working roll, leads Position device 8, secondary heating mechanism 42, wherein top working roll 71 is correspondingly arranged with about 72 bottom working roll to be used cooperatively, and under The upper surface of working roll 72 and the upper surface of roller-way 2 are located in same level;
The setting of secondary heating mechanism 42 is continuous for carrying out to working roll near top working roll 71 and bottom working roll 72 On-line heating, the roll surface length being heated are the 90% of its barrel length;The heating method of secondary heating mechanism 42 is continuously to exist Line high-frequency induction heating heats working roll using the kelvin effect of high-frequency induction heating;
Two guide devices 8 are located at the inlet and exit of hot-rolling mill 6;
Insulation cover 52 is located at the entrance side and outlet side of hot-rolling mill 6 after milling train preincubation cover 51 and milling train, and with heat The spacing of milling train 6 is 0.5m;Insulation cover is mainly used for the middle tail portion to the slab in slab in transit or the operation of rolling It is kept the temperature;
Roller-bottom type tunnel heat-treatment furnace 9 is 0.1m with the spacing of insulation cover 52 after milling train, successively include high-temperature region, in Warm area and low-temperature space, wherein several first heating dresses are installed in the position for corresponding to each warm area in roller-bottom type tunnel heat-treatment furnace 9 It sets 41 and (is respectively arranged in the top and two sides for corresponding to each warm area in roller-bottom type tunnel heat-treatment furnace 9, in use, top And the first heater 41 of two sides is respectively perpendicular to the upper surface and side surface of slab).
In above-mentioned apparatus, the furnace temperature of the high-temperature region of the first heating furnace 3 and roller-bottom type tunnel heat-treatment furnace 9 is controlled 1230℃-1270℃。
Embodiment 2
The present embodiment provides a kind of TiAl alloy plate hot rolling method, this method is carried out using the device of embodiment 1, specifically Process is as shown in Figure 2.Method includes the following steps:
(1) raw material provides: Ti-43.5Al-4Nb-1Mo-0.1B (at.%) alloy (referred to as: TNM alloy) slab is provided, High temperature coatings are coated on the surface of the alloy slab;
(2) it heats: TNM alloy slab being placed in the second heating furnace 1, is heated to 1180 DEG C, is transported after coming out of the stove through roller-way 2 It is sent into the first heating furnace 3, is heated to 1255 DEG C (temperature of forward direction rolling), keeps the temperature 30min;
(3) it warm operation roller: before TNM alloy slab goes out the first heating furnace 3, is filled by continuous online high-frequency induction heating It sets and the surface temperature of the top working roll 71 of hot-rolling mill 6 and bottom working roll 72 is heated to 500 DEG C -560 DEG C;
(4) it rolls: the TNM alloy slab for being heated to 1255 DEG C after step (2) being transported to forward direction on hot-rolling mill 6 and is rolled 1 passage is made, the high-temperature region of roller-bottom type tunnel heat-treatment furnace 9 is subsequently entered, is heated to 1255 DEG C (temperature inversely rolled), is kept the temperature It comes out of the stove after 10min and inversely rolls 1 passage in hot-rolling mill 6, enter back into heating and thermal insulation in the first heating furnace, rolled back through multiple TNM alloy slab is rolled into target thickness plate, plate thickness 2mm by journey;In heating and insulating process, furnace rolls road 10 is protected 0.6m/min speed is held to carry out forward or reverse;
(5) cooling: high-temperature region, middle warm area and low-temperature space by TNM sheet alloy successively through roller-bottom type tunnel heat-treatment furnace 9 (furnace temperature of high-temperature region is 1000 DEG C -1350 DEG C;The furnace temperature of middle warm area is 650 DEG C -1000 DEG C;The furnace temperature of low-temperature space is less than 650 DEG C), it is cooled down, completes the operation of rolling of hot rolled plate;
When rolling first block of TNM alloy slab, second block of TNM alloy slab, which enters in the first heating furnace 3, to be heated and keeps the temperature, After first piece of slab rolling into the heating of the high-temperature region of roller-bottom type tunnel heat-treatment furnace 9 and when keeping the temperature, second piece of TNM alloy sheets Base enters hot-rolling mill 6 and is rolled, and two blocks of TNM alloy slabs carry out alternately heating, heat preservation and rolling.
In above-mentioned hot-rolling method, if TNM alloy slab reaches the temperature inversely rolled after forward direction rolling, directly Reverse rolling, and enter in the first heating furnace 3 and heat and keep the temperature 10min-20min, without entering roller-bottom type tunnel heat-treatment furnace 9 Middle heating.
In above-mentioned hot-rolling method, if the temperature that TNM alloy slab is rolled by reaching forward direction after inversely rolling, directly It connects positive rolling, and enters high-temperature region heating and the heat preservation 10min-20min of roller-bottom type tunnel heat-treatment furnace 9, without entering the It is heated in two heating furnaces 1.
By above-mentioned hot-rolling method, the large scale TNM sheet alloy that surface quality is good, has excellent performance can be prepared.

Claims (20)

1. a kind of TiAl alloy plate hot rolling device, it is characterised in that: the device includes with lower component: roller-way also successively includes It is set to the second heating furnace by the roller-way, the first heating furnace on the roller-way, milling train preincubation cover, hot-rolling mill, milling train Insulation cover and roller-bottom type tunnel heat-treatment furnace afterwards;
First heating furnace is roller-bottom type tunnel heating furnace;
Insulation cover is located at the entrance side and outlet side of the hot-rolling mill after the milling train preincubation cover and the milling train;
Roller-bottom type tunnel heat-treatment furnace successively includes high-temperature region, middle warm area and low-temperature space;
Wherein, the hot-rolling mill includes working roll, secondary heating mechanism and two guide devices;
The working roll includes at least a top working roll and a bottom working roll, on the top working roll and the bottom working roll Under be correspondingly arranged to be used cooperatively, and the upper surface of the upper surface of the bottom working roll and the roller-way is located at same level On;
The secondary heating mechanism is arranged near the top working roll and bottom working roll, continuous for carrying out to the working roll On-line heating;
Two guide devices are located at the inlet and exit of the hot-rolling mill.
2. the apparatus according to claim 1, it is characterised in that: the top working roll that is heated and the bottom working roll Roll surface length is the 90%-95% of its barrel length.
3. the apparatus according to claim 1, it is characterised in that: be equipped with spacing between each component.
4. device according to claim 3, it is characterised in that: the spacing of second heating furnace and first heating furnace For 1m-10m;
The spacing of first heating furnace and the milling train preincubation cover is 0.1m-2m;
The spacing of the milling train preincubation cover and hot-rolling mill is 0.5m-5m;
The spacing of insulation cover is 0.5m-5m after the hot-rolling mill and the milling train;
The spacing of insulation cover and roller-bottom type tunnel heat-treatment furnace is 0.1m-2m after the milling train.
5. device described in any one of -4 according to claim 1, it is characterised in that: the top and two sides of first heating furnace Several first heaters are installed;
The top and two sides of each warm area of roller-bottom type tunnel heat-treatment furnace are equipped with several first heaters;
The hot-rolling mill is four-high reversing mill, and each working roll is provided with positive and negative roller.
6. device described in any one of -4 according to claim 1, it is characterised in that: the roller-way includes outside furnace rolls road and furnace Roller-way;
The furnace rolls road includes several roller-way groups, wherein can individually rotate between each roller-way group or at least two groups join Dynamic, each roller-way group can forward or reverse, velocity of rotation 0.2m/min-2m/min;
The outer roller-way of the furnace includes several roller-way groups, the outer roller-way of the furnace of hot-rolling mill entrance side and outlet side individually rotate forward or Reversion, velocity of rotation 2m/min-20m/min;
Each roller-way group includes 2-7 root roller-way.
7. device according to claim 5, it is characterised in that: the roller-way includes furnace rolls road and the outer roller-way of furnace;
The furnace rolls road includes several roller-way groups, wherein can individually rotate between each roller-way group or at least two groups join Dynamic, each roller-way group can forward or reverse, velocity of rotation 0.2m/min-2m/min;
The outer roller-way of the furnace includes several roller-way groups, the outer roller-way of the furnace of hot-rolling mill entrance side and outlet side individually rotate forward or Reversion, velocity of rotation 2m/min-20m/min;
Each roller-way group includes 2-7 root roller-way.
8. a kind of hot-rolling method of TiAl alloy plate is using TiAl alloy plate of any of claims 1-7 What material hot-rolling arrangement carried out, it is characterised in that: the hot-rolling method includes the following steps:
(1) TiAl alloy slab is provided, coats high temperature coatings in the surface of TiAl alloy slab;
(2) TiAl alloy slab is placed in the second heating furnace and is heated, transported into the first heating furnace after coming out of the stove through roller-way, then Secondary heating is simultaneously kept the temperature;
(3) before TiAl alloy slab goes out the first heating furnace, by secondary heating mechanism to the top working roll of hot-rolling mill and lower work The surface for making roller is preheated;
(4) it after the temperature that TiAl alloy slab reaches positive rolling, carries it to positive rolling is carried out on hot-rolling mill, then It into the high-temperature region of roller-bottom type tunnel heat-treatment furnace, heats and keeps the temperature, after reaching the temperature inversely rolled, come out of the stove and be sent into hot rolling It is inversely rolled, is then again introduced into the first heating furnace in machine, heated and keep the temperature, this process is known as one and is rolled back Journey, through multiple rolling backhauls by TiAl alloy slab rolling at the plate of target thickness;
(5) high-temperature region, middle warm area and the low-temperature space that the plate is successively passed through to roller-bottom type tunnel heat-treatment furnace, are cooled down, Complete course of hot rolling.
9. hot-rolling method according to claim 8, it is characterised in that: in step (2), heating is to add in the second heating furnace For heat to 1100 DEG C -1200 DEG C, the time of heat preservation is 20min-60min.
10. hot-rolling method according to claim 9, it is characterised in that: the preheating is heated to 300 DEG C -600 DEG C.
11. hot-rolling method according to claim 9, it is characterised in that: in step (4), the positive rolling and described inverse It is at least 1 passage respectively to rolling, the positive rolling and the rolling temperature inversely rolled are γ+α two-phase section or γ+alpha+beta three Phase region, the time of the heat preservation are 5min-20min.
12. hot-rolling method according to claim 9, it is characterised in that: in step (5), the furnace temperature of the high-temperature region is higher than 1000℃;The furnace temperature of the middle warm area is 650 DEG C -1000 DEG C;The furnace temperature of the low-temperature space is less than 650 DEG C.
13. hot-rolling method according to claim 12, it is characterised in that: the furnace temperature of the high-temperature region is 1000 DEG C -1350 ℃。
14. hot-rolling method according to claim 8, it is characterised in that: in heating and insulating process, furnace rolls road is kept The speed of 0.2m/min-2m/min carries out forward or reverse.
15. hot-rolling method according to claim 9, it is characterised in that: in heating and insulating process, furnace rolls road is kept The speed of 0.2m/min-2m/min carries out forward or reverse.
16. the hot-rolling method according to any one of claim 8-15, it is characterised in that: if slab is rolled through forward direction Afterwards, temperature reaches the temperature inversely rolled, then directly reverse rolling, and enters heating and heat preservation in first heating furnace, It is heated without entering in roller-bottom type tunnel heat-treatment furnace.
17. hot-rolling method according to claim 16, it is characterised in that: if slab is after inversely rolling, temperature reaches To the temperature of forward direction rolling, then directly positive rolling, and enter in the high-temperature region of the roller-bottom type tunnel heat-treatment furnace heating and Heat preservation is heated without entering in first heating furnace.
18. hot-rolling method according to claim 17, it is characterised in that: the time of the heat preservation is 5min-20min.
19. the hot-rolling method according to any one of claim 8-15,17-18, it is characterised in that: first block of slab of rolling When, next block of slab, which enters in first heating furnace, to be heated and is kept the temperature, and institute is entered after first piece of slab rolling When stating heating in the high-temperature region of roller-bottom type tunnel heat-treatment furnace and keeping the temperature, the next block of slab enters the hot-rolling mill and is rolled System, i.e. muti-piece slab carry out alternately heating, heat preservation and rolling.
20. hot-rolling method according to claim 16, it is characterised in that: rolling first block of slab when, next block of slab into Enter and heated and kept the temperature in first heating furnace, the roller-bottom type tunnel Re Chu is entered after first piece of slab rolling Manage furnace high-temperature region in heat and heat preservation when, the next block of slab enter the hot-rolling mill rolled, i.e., muti-piece slab into Row alternately heating, heat preservation and rolling.
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CN108889777A (en) * 2018-05-30 2018-11-27 青岛海源实业有限公司 A kind of graphene reinforced aluminum matrix composites thin plate rolling device and application method
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