Technical Field
[0001] The present disclosure relates to hot rolling equipment, in particular to a mobile
hot coil thermal insulation heat treatment device.
Background Art
[0002] The production of cold-rolled ultra-high-strength steel mainly has the problem of
large performance fluctuation in the length and width directions of the strip steel,
which results in severe fluctuation in rolling force during cold rolling production
and failure to meet the tolerance standard for the thickness of final cold-rolled
products. Not only the rolling stability of cold-rolling - pickling - continuous rolling
mills is influenced, but also the yield rate of cold-rolled ultra-high-strength steel
is seriously affected.
[0003] The traditional hot rolling production line has only completed delivery of steel
coils during the coil transportation after coiling. If the steel coils require thermal
insulation, slow cooling, annealing and other treatment processes, special insulation
pits, insulation furnaces, bell furnaces and heat treatment equipment need to be set
up in the production line. This is characterized by large investment, high energy
consumption, large transportation cost, low yield, etc. Especially for high-strength
steel, the effect of the above processes cannot reach an ideal state due to aging.
[0004] At present, the mainstream steel plants at home and abroad mostly employ off-line
thermal insulation pits, thermal insulation walls or thermal insulation furnaces to
perform slow cooling and annealing on high-strength steel in an attempt to further
cool the strip steel uniformly after coiling, so as to fulfil the purpose of reducing
performance fluctuation and releasing internal stress. At the present stage, some
companies have made certain staged development and application of movable hot coil
annealing control devices, but there are many problems in use.
- (1) The most prominent problem of a rolling line thermal insulation device is that
the interval between coiling of strip steel and entry of a steel coil into the insulation
device is so long that metallographic structure transformation of the strip steel
has already occurred or has been completed. The effect of off-line slow cooling in
improving hot coil performances cannot meet the quality requirements for high-strength
steel. It will take as long as 20-30 minutes to hoist and transfer the hot coil into
a thermal insulation enclosure, such that the air cooling time of the steel coil is
too long, which affects the thermal insulation effect and material properties.
- (2) The cost of adding special thermal insulation pits, thermal insulation furnaces,
bell furnaces, heat treatment and the like to such thermal insulation devices is generally
high. Moreover, it takes a long period of time to retrofit the devices, and thus normal
production will be affected. In addition, there is a problem that the thermal insulation
effect is not good (i.e. temperature drops fast).
- (3) Thermal insulation enclosures of this kind are nearly all in off-line mode (the
thermal insulation devices are statically positioned on a coiling platform), and transportation
of steel coils disrupts the normal production rhythm of a production line. The production
capacity of the rolled steel production line is affected, and bulk production is practically
difficult.
- (4) At the present stage, the thermal insulation enclosures developed by some companies
only have thermal insulation effect. Since the bottom structure cannot be sealed completely,
the thermal insulation effect is not good for steel coils.
[0005] Chinese Patent Application
CN201210338335 discloses a "carrier roller-tray type metal strip coil transport device", comprising
a transport chain tray, wherein a steel coil is rolled up and transported after coiling.
This device comprises a fixed saddle just for transporting a steel coil. It cannot
perform on-line thermal insulation of the steel coil during transportation.
[0006] Chinese Patent Application
CN201710853613.3 discloses an "on-line thermal insulation slow cooling device" which only has thermal
insulation effect. Due to incomplete sealing of its bottom structure, the thermal
insulation effect is not good for steel coils.
[0007] Japanese Patent Publication
JP1985110816(A) discloses a "single-type thermal insulation enclosure", comprising a single-type
thermal insulation enclosure, a form of roller bed transport chain structure, which
can only achieve the thermal insulation effect for steel coils.
[0008] Japanese Patent Publication
JP2010094710 (A) discloses a "tunnel-type thermal insulation enclosure", wherein special thermal
insulation pits and the like are added to the production line, which generally results
in high cost. Moreover, it takes a long period of time to retrofit the production
line, and thus normal production will be affected.
Summary
[0009] An object of the present disclosure is to design a movable hot coil thermal insulation
heat treatment device, which can use the heat of a steel coil itself to implement
a heat treatment process including soaking and slow cooling of the steel coil to achieve
the goals of high efficiency, energy saving and high yield rate.
[0010] To achieve the above object, the technical solution of the present disclosure is
as follows:
There is provided a movable hot coil thermal insulation heat treatment device, comprising:
a baseboard; a steel coil fixture provided at a center of the baseboard; a tray which
is an annular structure and horizontally arranged by nesting at a middle part of the
steel coil fixture; a thermal insulation enclosure, which has an open lower end and
an inner chamber having a volume larger than the steel coil, wherein the thermal insulation
enclosure is arranged on the tray; an electric heating device provided on an inner
side wall of the thermal insulation enclosure; a temperature sensor provided in the
thermal insulation enclosure; and an information acquisition control module, wherein
the electric heating device and the temperature sensor are electrically coupled to
the information acquisition control module.
[0011] Preferably, the movable hot coil thermal insulation heat treatment device further
comprises a gas protection device and a gas sensor which are electrically coupled
to the information acquisition control module, respectively.
[0012] Preferably, a signal emitting module is provided in the information acquisition control
module.
[0013] Preferably, the steel coil fixture comprises two juxtaposed support bodies, wherein
upper end faces of the two support bodies are inclined surfaces and are arranged symmetrically;
and a side sealing device is arranged at a gap between the two support bodies at each
of two sides of the two support bodies.
[0014] Further, a bottom sealing device is arranged between bottoms of the two support bodies
of the steel coil fixture to close the gap between the bottoms of the two support
bodies.
[0015] Preferably, the bottom sealing device comprises a support plate provided between
the two support bodies of the steel coil fixture, wherein the support plate is arranged
vertically, and a plurality of rollers are provided on lower parts of two sides of
the support plate at even spacings in a length direction to form a slidable mechanism;
and a sealing plate provided horizontally on a top surface of the support plate, wherein
the sealing plate has a size corresponding to the gap between the bottoms of the two
support bodies.
[0016] Preferably, an electromagnetic block is provided on an end face of the support plate,
and correspondingly, a metal stopper matching the electromagnetic block is provided
between end portions of the two support bodies of the steel coil fixture at one side.
[0017] Preferably, the sealing plate has a composite layered structure, wherein an intermediate
part of the structure consists of an insulating felt, and two side parts are high
temperature resistant steel plates.
[0018] Preferably, the side sealing devices comprise: two fixed baseboards, each arranged
horizontally at a bottom of the gap at an outer side of the two support bodies of
the steel coil fixture; a plurality of guide rollers spaced in an axial direction
are provided on an outer side surface of each of the fixed baseboards; two sealing
members, each arranged at the gap at one of the two sides of the two support bodies
of the steel coil fixture, wherein a bottom end of the sealing member is provided
slidably on the guide rollers of the fixed baseboard; and a driving mechanism, comprising:
two racks, each provided horizontally on one of the two sealing members with one end
of the rack being coupled to the sealing member; a drive shaft, arranged horizontally
at a side of the support body opposite to the gap through two bearing pedestals; two
gears, each provided at one of two ends of the drive shaft, wherein the gear meshes
with the rack.
[0019] Preferably, the bearing pedestal is provided on one side of the support body by using
a fixing plate, wherein one side of the fixing plate is provided with a through hole
for the rack to pass through, and a roller abutted against a top surface of the rack
is provided at an outer side of the fixing plate above the through hole.
[0020] Preferably, the sealing plate has a composite layered structure, wherein an intermediate
part of the structure consists of an insulating felt, and two sides of the intemediate
part are cladded with a high temperature resistant steel plate.
[0021] Preferably, the sealing member is a right angle plate structure.
[0022] Preferably, a positioning sleeve is provided on a lower part of a side of the thermal
insulation enclosure. Correspondingly, a positioning pin matching the positioning
sleeve is provided on the tray for the thermal insulation enclosure. The positioning
pin is preferably a cone-shaped body.
[0023] Preferably, the thermal insulation enclosure is provided with a ventilation hole
and a corresponding exhaust valve.
[0024] Preferably, the thermal insulation enclosure has a composite structure, comprising:
an outer protection layer, which is a high-strength steel plate; an intermediate layer,
which is a thermal insulation material; and an inner layer, which is a high temperature
resistant stainless steel plate.
[0025] Preferably, the thermal insulation enclosure is a composite structure, comprising
an inner radiation layer, an electric heating wire layer, an intermediate mesh cover,
an intermediate thermal insulation layer, and an outer protection layer in order from
inside to outside; wherein the composite structure of the thermal insulation enclosure
is fixed with an anchor nail.
[0026] Regarding material, the inner layer is a high temperature resistant stainless steel
plate.
[0027] Preferably, the thermal insulation enclosure is a square thermal insulation enclosure
or a circular thermal insulation enclosure.
[0028] Preferably, the electric heating device is an electric heating wire, and the temperature
sensor is a thermocouple.
[0029] The side sealing device mainly serves to enhance sealing performance, and prevent
heat loss from the inner thermal insulation space after the thermal insulation enclosure
is installed on the tray. After the sealing performance is increased, utilization
of the residual heat of the steel coil in the sealed space is promoted.
[0030] The heat loss from the thermal insulation device is reduced; the stability of the
temperature insulation is increased; the accuracy of data measurement is guaranteed;
the air tightness of the thermal insulation device is ensured; oxidation of the objects
inside the thermal insulation device is prevented; and the level of automatic operation
is enhanced. Therefore, the performances of the steel coil are improved.
[0031] The bottom sealing device closes the opening at the bottom. When the steel coil is
unloaded from the coiler cavity onto the tray and the object to be thermally insulated
is put in place, the thermal insulation enclosure is applied. During travel, the device
automatically moves horizontally so that the opening at the bottom of the tray is
sealed tightly to form a closed space to ensure that the heat will not be lost, and
thermal insulation is achieved.
[0032] The base of the thermal insulation enclosure on the transport chain tray is located
on the upper part of the transport chain tray, and is integrally welded to the transport
chain tray. In order to increase the bearing capacity for the thermal insulation enclosure,
the base of the thermal insulation enclosure on the transport chain tray is made of
a high-strength steel material coated with a thermal insulation material. A high temperature
resistant stainless steel plate is laid on the outermost part after a middle anchor
nail is fixed. In order to ensure that the thermal insulation enclosure can be hoisted
up and down conveniently, a positioning pin shaft and a guide sleeve are designed
at the central position of the base of the thermal insulation enclosure on the transport
chain tray. During the hoisting and installation process, the thermal insulation enclosure
is finally aligned. Therefore, the positioning precision is increased, and the installation
time is reduced.
[0033] When the steel coil is unloaded from the coiler cavity onto the tray, the thermal
insulation enclosure is positioned and closed with the aid of positioning pins and
positioning sleeves, so that the thermal insulation enclosure can be quickly installed
and positioned to form a closed space to ensure that the heat will not be lost.
[0034] After the steel coil that has been coiled as a hot coil is placed on the transport
chain tray and covered with the thermal insulation enclosure device, the gas protection
device is used to protect the steel coil from oxidation which will otherwise increase
the surface mass of the steel coil. A protective gas is introduced into the thermal
insulation enclosure to replace the air around the steel coil. Oxidation of the steel
coil and increase of the surface mass of the steel coil can thus be prevented.
[0035] A ventilation hole through the thermal insulation enclosure is arranged, and an exhaust
valve is installed. After the steel coil that has been coiled as a hot coil is placed
on the transport chain tray and covered with the thermal insulation enclosure device,
the temperature in the internal space is 600 °C or higher. In addition, while the
strip steel is coiled and the steel coil is cooled by laminar flow, a small amount
of water vapor is adhered to the surface of the steel coil. In order to ensure the
safety of the equipment and improve the quality of the steel coil, the high-temperature
gas is expelled before the protective gas is introduced into the thermal insulation
enclosure.
[0036] Since the thermal insulation enclosure has to be hoisted frequently, the outer layer
of the thermal insulation enclosure is a high-strength steel plate to guarantee its
strength for hoisting. The exterior is made of special high temperature resistant
steel. A thermal insulation material is laid in the middle. After the middle anchor
nail is fixed, a high temperature resistant stainless steel plate is laid as the innermost
layer. To ensure hoisting at a later stage, a suction cup for hoisting is added on
the top of the thermal insulation enclosure. At the same time, in view of the nature
and type of the steel coil, the thermal insulation enclosure can be made into other
forms (square thermal insulation enclosure structure, circular thermal insulation
enclosure structure). A change of the temperature field structure is more conducive
to improving the performances of the steel coil.
[0037] The electric heating device not only enables the thermal insulation enclosure to
make use of the residual heat of the hot-rolled steel coil to achieve slow cooling,
but also enables secondary heat treatment on some special steel materials to implement
secondary tempering to improve the performances of the steel coil and refine grains.
[0038] The information detecting and sending module records the temperature of the steel
coil in the thermal insulation enclosure. A detecting element, a PLC system and a
wireless emitting device may be added on the thermal insulation enclosure to identify
the information in the thermal insulation enclosure. A thermocouple measuring temperatures
in the range of 0-1100 degrees is implanted inside the thermal insulation enclosure
for detecting the temperature change of the air inside the thermal insulation enclosure.
[0039] In order to transmit data such as air temperature and the like in the thermal insulation
enclosure to a ground server, and also transmit data and information related with
the steel coil to downstream, a wireless remote control box may be installed on the
outer surface of the original thermal insulation enclosure, wherein, with the aid
of the wireless function and the power storage device, functions such as mobile temperature
measurement and sampling of the thermal insulation enclosure, wireless data transmission,
and logistics information writing and reading are implemented.
[0040] The beneficial effects of the present disclosure include:
The semi-circular structure design of the present disclosure has the characteristics
of light structure weight, good thermal insulation effect, convenient steel coil loading
and unloading, high degree of automation, good airtightness, etc., and has further
optimized the equipment's thermal insulating, soaking and oxidation resisting effects.
- 1. The best effect can be achieved by implementing thermal insulation shortly after
coiling. When thermal insulation is implemented in a high temperature zone, performance
indicators can be improved effectively. When thermal insulation is implemented in
a low temperature zone, structure transformation or uneven cooling has already occurred,
and thus the effect is greatly deteriorated.
- 2. Efficient insulation is a critical factor. Variation of cooling rate affects the
material performances. "Laminar cooling + post-rolling cooling control" is an important
link for improving the performances of a high-strength steel material. For different
products, due to different compositions, treatment temperatures and processes, the
material characteristics of hot coils also differ from each other.
- 3. Prolonged thermal insulation time is beneficial to homogenization and optimization
of material performances. Thermal insulation time of ≥6 hours for 980QP, 980DP-GI
(limit specification) and 1180QP hot coils, and thermal insulation time of ≥12 hours
for 980CP hot coils are the best.
Description of the Drawings
[0041]
Fig. 1 is a schematic view showing the structure of Example 1 according to the present
disclosure.
Fig. 2 is a side view of Example 1 according to the present disclosure.
Fig. 3 is a front view of Example 2 according to the present disclosure.
Fig. 4 is a front view of Example 3 according to the present disclosure.
Fig. 5 is a partial cutaway view of the thermal insulation enclosure in the Examples
according to the present disclosure.
Fig. 6 is a stereogram of Example 1 according to the present disclosure.
Fig. 7 is a front view of Example 1 according to the present disclosure.
Fig. 8 is a stereogram of the bottom sealing device in Example 1 according to the
present disclosure.
Fig. 9 is a front view of Example 1 according to the present disclosure.
Fig. 10 is a side view corresponding to Fig. 9.
Fig. 11 is an upward stereogram of Example 1 according to the present disclosure.
Fig. 12 is an enlarged schematic view of part A in Fig. 11.
Detailed Embodiments
[0042] Referring to Figs. 1-12, the movable hot coil thermal insulation heat treatment device
according to the present disclosure comprises:
a baseboard 1;
a steel coil fixture 2 provided at a center of the baseboard 1;
a tray 3 which is an annular structure and horizontally arranged by nesting at a middle
part of the steel coil fixture 2;
a thermal insulation enclosure 4, which has an open lower end and an inner chamber
having a volume larger than the steel coil 100, wherein the thermal insulation enclosure
is arranged on the tray 3;
an electric heating device 5 provided on an inner side wall of the thermal insulation
enclosure 4;
a temperature sensor 6 provided within the thermal insulation enclosure 4; and
an information acquisition control module 7, wherein the electric heating device 5
and the temperature sensor 6 are electrically coupled to the information acquisition
control module 7.
[0043] In addition, the device further comprises a gas protection device and gas sensors
8, 8' which are electrically coupled to the information acquisition control module
7, respecti vely.
[0044] Preferably, a signal emitting module is provided in the information acquisition control
module 7.
[0045] Preferably, the steel coil fixture 2 comprises two juxtaposed support bodies 21,
22, wherein upper end faces of the two support bodies 21, 22 are inclined surfaces
and are arranged symmetrically; and side sealing devices 9, 9' are arranged at a gap
between the two support bodies 21, 22 at two sides of the two support bodies 21, 22.
[0046] Still further, a bottom sealing device 10 is arranged between bottoms of the two
support bodies 21, 22 of the steel coil fixture 2 to close the gap between the bottoms
of the two support bodies 21, 22.
[0047] Preferably, the bottom sealing device 10 comprises:
a support plate 101 provided between the two support bodies 21, 22 of the steel coil
fixture 2, wherein the support plate 101 is arranged vertically, and a plurality of
rollers 102 are provided on lower parts of two sides of the support plate 101 at even
spacings in a length direction to form a slidable mechanism; and
a sealing plate 103 provided horizontally on a top surface of the support plate 101,
wherein the sealing plate has a size corresponding to the gap between the bottoms
of the two support bodies 21, 22.
[0048] Preferably, an electromagnetic block 104 is provided on an end face of the support
plate 101, and correspondingly, a metal stopper matching the electromagnetic block
is provided between end portions of the two support bodies of the steel coil fixture
at one side.
[0049] Preferably, the sealing plate 103 has a composite layered structure, wherein an intermediate
part of the structure consists of an insulating felt, and two side parts are high
temperature resistant steel plates.
[0050] Preferably, the side sealing device 9 (which is taken as an example; the same below)
comprises:
two fixed baseboards 91, 91' respectively provided horizontally at a bottom of the
gap at an outer side of the two support bodies 21, 22 of the steel coil fixture 2,
wherein a plurality of guide rollers 92, 92' spaced in an axial direction are provided
on outer side surfaces of the fixed baseboards 91, 91';
two sealing members 93, 93' respectively arranged at the gap at two sides of the two
support bodies 21, 22 of the steel coil fixture 2, wherein bottom ends of the sealing
members 93, 93' are provided slidably on the guide rollers 92, 92' of the fixed baseboard
91;
a driving mechanism 94, comprising:
two racks 941 respectively provided horizontally on the two sealing members 93, 93'
with one end of the rack 941 being coupled to the sealing members 93, 93';
a drive shaft 942, arranged horizontally at a side of the support body 21 opposite
to the gap through two bearing pedestals 943, wherein a gear 944 is provided at each
of two ends of the drive shaft 942, wherein the gear 943 meshes with the rack 941.
[0051] Preferably, the bearing pedestal 943 is provided on one side of the support body
221 by using a fixing plate 944, wherein one side of the fixing plate 945 is provided
with a through hole 9451 for the rack 941 to pass through, and a roller 946 abutted
against a top surface of the rack 941 is provided at an outer side of the fixing plate
945 above the through hole 945.
[0052] Preferably, the sealing member 93 has a composite layered structure, wherein an intermediate
part of the structure is an insulating material, and two sides of the intermediate
part are cladded with a high temperature resistant steel plate.
[0053] Preferably, the sealing member 93 is a right angle plate structure.
[0054] Preferably, a positioning sleeve 12 is provided on a lower part of a side of the
thermal insulation enclosure 4. Correspondingly, a positioning pin 13 matching the
positioning sleeve 12 is provided on the tray 3 for the thermal insulation enclosure.
The positioning pin 13 is preferably a cone-shaped body.
[0055] Preferably, the thermal insulation enclosure 4 is provided with a ventilation hole
and a corresponding exhaust valve 41.
[0056] Preferably, the thermal insulation enclosure 4 has a composite structure, comprising:
an outer protection layer, which is a high-strength steel plate; an intermediate layer,
which is a thermal insulation material; and an inner layer, which is a high temperature
resistant stainless steel plate.
[0057] Preferably, the thermal insulation enclosure 4 is a composite structure, comprising
an inner radiation layer 42, an electric heating wire layer 43, an intermediate mesh
cover 44, an intermediate thermal insulation layer 45, and an outer protection layer
46 in order from inside to outside. The composite structure of the thermal insulation
enclosure is fixed with an anchor nail 47.
[0058] Referring to Figs. 3 and 4, the thermal insulation enclosure 4 is a square thermal
insulation enclosure or a circular thermal insulation enclosure.
[0059] Preferably, the electric heating device 5 is an electric heating wire, and the temperature
sensor is a thermocouple.
[0060] The thermal insulation treatment of a strip steel coil after coiling according to
the present disclosure also fulfils the purpose of annealing treatment by making use
of the residual heat in the steel coil that has just been coiled, which greatly addresses
the challenges of insufficient performance improvement caused by the excessively long
time from coiling to entry of the steel coil to the thermal ensulation-anealing device,
and large performance fluctuations of the strip steel in the length and width directions.
[0061] A special batch of hot-rolled strip steel may need to be subjected to special treatment
such as in-depth processing. The heating device and protective cooling gas input system
integrated in the thermal insulation enclosure can cooperate to achieve temperature
control under necessary conditions.
1. A movable hot coil thermal insulation heat treatment device, comprising:
a baseboard;
a steel coil fixture provided at a center of the baseboard;
a tray which is an annular structure and horizontally arranged by nesting at a middle
part of the steel coil fixture;
a thermal insulation enclosure, which has an open lower end and an inner chamber having
a volume larger than the steel coil, wherein the thermal insulation enclosure is arranged
on the tray;
an electric heating device provided on an inner side wall of the thermal insulation
enclosure;
a temperature sensor provided within the thermal insulation enclosure; and
an information acquisition control module, wherein the electric heating device and
the temperature sensor are electrically coupled to the information acquisition control
module.
2. The movable hot coil thermal insulation heat treatment device according to claim 1,
wherein the movable hot coil thermal insulation heat treatment device further comprises
a gas protection device and a gas sensor which are electrically coupled to the information
acquisition control module, respectively.
3. The movable hot coil thermal insulation heat treatment device according to claim 2,
wherein a signal emitting module is provided in the information acquisition control
module.
4. The movable hot coil thermal insulation heat treatment device according to claim 1,
wherein the steel coil fixture comprises two juxtaposed support bodies, wherein upper
end faces of the two support bodies are inclined surfaces and are arranged symmetrically;
and a side sealing device is arranged at a gap at each of two sides of the two support
bodies.
5. The movable hot coil thermal insulation heat treatment device according to claim 4,
wherein a bottom sealing device is arranged between bottoms of the two support bodies
of the steel coil fixture to close the gap between the bottoms of the two support
bodies.
6. The movable hot coil thermal insulation heat treatment device according to claim 4,
wherein the side sealing devices comprise:
two fixed baseboards each provided horizontally at a bottom of the gap at an outer
side of the two support bodies of the steel coil fixture, wherein a plurality of guide
rollers spaced in an axial direction are provided on an outer side surface of each
of the fixed baseboards;
two sealing members, each arranged at the gap at one of the two sides of the two support
bodies of the steel coil fixture, wherein a bottom end of the sealing member is provided
slidably on the guide rollers of the fixed baseboard; and
a driving mechanism, comprising:
two racks, each provided horizontally on one of the two sealing members with one end
of the rack being coupled to the sealing member; and
a drive shaft, arranged horizontally at a side of the support body opposite to the
gap through two bearing pedestals; two gears, each provided at one of two ends of
the drive shaft, wherein the gear meshes with the rack.
7. The movable hot coil thermal insulation heat treatment device according to claim 6,
wherein the bearing pedestal is provided on one side of the support body by using
a fixing plate, wherein one side of the fixing plate is provided with a through hole
for the rack to pass through, and a roller abutted against a top surface of the rack
is provided at an outer side of the fixing plate above the through hole.
8. The movable hot coil thermal insulation heat treatment device according to claim 6,
wherein the sealing member has a composite layered structure, wherein an intermediate
part of the structure consists of an insulating felt, and two sides of the intermediate
part are cladded with high temperature resistant steel plates.
9. The movable hot coil thermal insulation heat treatment device according to claim 6
or 8, wherein the sealing member is a right angle plate structure.
10. The movable hot coil thermal insulation heat treatment device according to claim 5,
wherein the bottom sealing device comprises:
a support plate provided between the two support bodies of the steel coil fixture,
wherein the support plate is arranged vertically, and a plurality of rollers are provided
on lower parts of two sides of the support plate at even spacings in a length direction
to form a slidable mechanism; and
a sealing plate provided horizontally on a top surface of the support plate, wherein
the sealing plate has a size corresponding to the gap between the bottoms of the two
support bodies.
11. The movable hot coil thermal insulation heat treatment device according to claim 10,
wherein an electromagnetic block is provided on an end face of the support plate,
and correspondingly, a metal stopper matching the electromagnetic block is provided
between end portions of the two support bodies of the steel coil fixture at one side.
12. The movable hot coil thermal insulation heat treatment device according to claim 5,
wherein the sealing plate has a composite layered structure, wherein an intermediate
part of the structure consists of an insulating felt, and two side parts are high
temperature resistant steel plates.
13. The movable hot coil thermal insulation heat treatment device according to claim 1,
wherein a positioning sleeve is provided on a lower part of a side of the thermal
insulation enclosure; correspondingly, a positioning pin matching the positioning
sleeve is provided on the tray for the thermal insulation enclosure, wherein the positioning
pin is preferably a cone-shaped body.
14. The movable hot coil thermal insulation heat treatment device according to claim 1,
wherein the thermal insulation enclosure is provided with a ventilation hole and a
corresponding exhaust valve.
15. The movable hot coil thermal insulation heat treatment device according to claim 1,
wherein the thermal insulation enclosure has a composite structure, comprising: an
outer protection layer, which is a high-strength steel plate; an intermediate layer,
which is a thermal insulation material; and an inner layer, which is a high temperature
resistant stainless steel plate.
16. The movable hot coil thermal insulation heat treatment device according to claim 1,
wherein the thermal insulation enclosure is a composite structure, comprising an inner
radiation layer, an electric heating wire layer, an intermediate mesh cover, an intermediate
thermal insulation layer, and an outer protection layer in order from inside to outside.
17. The movable hot coil thermal insulation heat treatment device according to claim 1,
wherein the composite structure of the thermal insulation enclosure is fixed with
an anchor nail.
18. The movable hot coil thermal insulation heat treatment device according to claim 1,
wherein the thermal insulation enclosure is a square thermal insulation enclosure
or a circular thermal insulation enclosure.
19. The movable hot coil thermal insulation heat treatment device according to claim 1,
wherein the electric heating device is an electric heating wire, and the temperature
sensor is a thermocouple.