CN103157670B - Reducing slab portion temperature dropping hot milling heat holding cover and operating device thereof - Google Patents
Reducing slab portion temperature dropping hot milling heat holding cover and operating device thereof Download PDFInfo
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- CN103157670B CN103157670B CN201110422044.XA CN201110422044A CN103157670B CN 103157670 B CN103157670 B CN 103157670B CN 201110422044 A CN201110422044 A CN 201110422044A CN 103157670 B CN103157670 B CN 103157670B
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- overhead guard
- cover
- side cover
- heat holding
- brace summer
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Abstract
The invention relates to the field of hot milling insulation, in particular to a hot milling heat holding cover and an operating device thereof. The reducing slab portion temperature dropping hot milling heat holding cover is composed of a top cover and side covers, wherein the number of the side covers is two, and the pair of the side covers is symmetrically arranged on two sides of the top cover. The top cover is low in the middle, high in two sides. The side covers are circular-arc-shaped. Inner surfaces of the top cover and the side covers are coated a layer of high temperature resistance heat insulation coating. A layer of high temperature resistance coating is further coated on the high temperature resistance heat insulation coating. The operating device of the reducing slab portion temperature dropping hot milling heat holding cover comprises a supporting base seat, a supporting pole, a supporting beam, a top cover control device, side cover supporting frames and a top cover angle regulating mechanism. According to the hot milling heat holding cover and the operating device thereof, the middle lost heat of the middle slabs is reallocated to two ends of the width direction of the slabs, temperatures of the slabs tend balanced in the width direction wholly, and quality of strip steels can be controlled effectively, and energy input in the aspect of homogenized temperatures is reduced.
Description
Technical field
The present invention relates to hot rolling heat holding field, particularly relate to a kind of hot rolling heat holding cover and operating means thereof.
Background technology
In course of hot rolling, because intermediate temperature drop is slow in slab natural cooling process, slab dephosphorization cooling procedure, edge cooling is fast, so can produce the inequality of width of plate slab direction temperature drop.This temperature uneven phenomenon of slab, causes adverse effect for hot rolling production and product quality, mainly comprises:
Slab edge temperature is too low, makes edge much higher hard in slab production process, causes the heavy wear in rolling edge region, cause flatness defect, reduces hot rolling output; The temperature in width of plate slab direction is uneven, causes slab internal soundness uneven, has a strong impact on the performance of hot-rolled product.If lip temperature and the central temperature temperature difference are comparatively large, finishing stands can be caused to ftracture;
The width of plate slab direction temperature difference is a difficult problem of puzzlement hot rolling production process.In order to reduce the band steel intermediate blank temperature difference, on hot-rolled strip production line, the equipment such as strip edge heater in prior art, are usually adopted to solve the width temperature inequality of slab.Strip edge heater needs larger investment, needs to consume mass energy in production process.
And the stay-warm case equipment that line adopts in a large number is produced in existing hot rolling, it is all a square heat preserving casing, the insulation effect to a certain degree to slab can only be played, be mainly used in the homogeneous temperature sex chromosome mosaicism solving slab length direction to a certain extent, effectively can not solve margin and center width Temperature Distribution difference problem.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of minimizing slab edge temperature drop hot rolling heat holding cover and operating means thereof, make slab in the direction of the width temperature entirety be tending towards balanced, effectively control strip quality, the energy decreased in homogenization temperature drops into.
The present invention is achieved in that a kind of minimizing slab edge temperature drop hot rolling heat holding cover, be made up of overhead guard and side cover two parts, described side cover has a pair, one offside cover is symmetricly set on the both sides of overhead guard, the shape of overhead guard is that middle low both sides are high, side cover is circular arc, and described overhead guard and side cover inner surface are coated with one deck high-temperature-resistant thermal-insulation coating, and high-temperature-resistant thermal-insulation coating is also coated with the high temperature resistant reflective coating of one deck.
Described overhead guard is made up of one block of level board and a pair oblique side plate, and described a pair oblique side plate symmetry is hinged on the both sides of level board.
Described side cover top margin upper surface is equipped with side cover contact signal switch, and oblique side plate top margin upper surface is equipped with overhead guard contact signal switch.
A kind of operating means reducing slab edge temperature drop hot rolling heat holding cover, comprise base for supporting, support bar, brace summer, overhead guard control device, side cover bracing frame and overhead guard angle adjusting mechanism, described support bar is arranged on base for supporting, brace summer is arranged on support bar, brace summer is provided with track, described overhead guard control device is arranged on brace summer, overhead guard control device is connected with the centre of overhead guard, described side cover bracing frame has a pair, side cover bracing frame is arranged in the track on brace summer, side cover bracing frame covers with side and is connected, described overhead guard angle adjusting mechanism is arranged on overhead guard.
Described overhead guard control device comprises stepper motor and chain, and described stepper motor is arranged on brace summer, and chain one end is connected with stepper motor, and the chain other end is connected with the mid point of overhead guard after walking around pulley pendency.
The present invention reduces slab edge temperature drop hot rolling heat holding cover and operating means thereof, cover by adopting the side of the high overhead guard in middle low both sides and circular arc and dissipated heat in the middle of intermediate blank be re-assigned to after being coated with high temperature resistant reflective coating the two ends of the width of slab, make slab in the direction of the width temperature entirety be tending towards balanced, effectively control strip quality, the energy decreased in homogenization temperature drops into.
Accompanying drawing explanation
Fig. 1 is that the present invention reduces slab edge temperature drop hot rolling heat holding cover structural representation;
Fig. 2 is that the present invention reduces slab edge temperature drop hot rolling heat holding cover and operating means structural representation thereof;
Fig. 3 is overhead guard angle adjusting mechanism structural representation.
In figure: 1 base for supporting, 2 support bars, 3 brace summers, 4 side cover bracing frames, 5 overhead guard angle adjusting mechanisms, 6 stepper motors, 7 chains, 8 intermediate blank, 10 overhead guards, 20 side covers, 11 level boards, 12 oblique side plates, 13 side cover contact signal switches, 14 overhead guard contact signal switches.
Detailed description of the invention
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's statement.
Embodiment 1
As shown in Figure 1, a kind of minimizing slab edge temperature drop hot rolling heat holding cover, cover 20 two parts by overhead guard 10 and side to form, described side cover 20 has a pair, one offside cover 20 is symmetricly set on the both sides of overhead guard 10, the shape of overhead guard 10 is that middle low both sides are high, side cover 20 is circular arc, described overhead guard 10 and side are covered 20 inner surfaces and are coated with one deck high-temperature-resistant thermal-insulation coating, high-temperature-resistant thermal-insulation coating is also coated with the high temperature resistant reflective coating of one deck, high temperature resistant reflective coating effectively can reflect the heat of intermediate blank 8, and according to the reflection angle of overhead guard 10, dissipated heat is re-assigned to the two ends of the width of intermediate blank 8, heat is concentrated the edge reflexing to intermediate blank 8 by the radian of side cover 20, board briquette entirety is made to be tending towards balanced, the angle that overhead guard 10 dual-side tilts is determined by width of plate slab, to ensure rear intermediate blank 8 homogeneous temperature in the direction of the width of reflection.
When this stay-warm case reality uses, according to the difference of producing line production steel grade width of plate slab, the position of the angle of inclination, both sides of overhead guard 10 and side cover 20 all needs to regulate, so overhead guard 10 is made up of one block of level board 11 and a pair oblique side plate 12 in the present embodiment, described a pair oblique side plate 12 symmetry is hinged on the both sides of level board 11; When putting down stay-warm case, first regulate the position of side cover 20 and put down overhead guard 10 after locking, making overhead guard 10 and side cover 20 and contact, then locking overhead guard 10; When opening stay-warm case, mention overhead guard 10, to contacting with brace summer 3 and locking, then control side cover 20 and move to the home locking set to both sides, thus stay-warm case is opened.
Mentioning and putting down in the process of overhead guard 10, the overhead guard contact signal switch 14 of the side cover contact signal switch 13 and oblique side plate 12 top margin upper surface dress that cover 20 top margin upper surfaces by side controls the position of overhead guard 10.
As Fig. 2, shown in 3, a kind of operating means reducing slab edge temperature drop hot rolling heat holding cover, comprise base for supporting 1, support bar 2, brace summer 3, overhead guard control device, side cover bracing frame 4 and overhead guard angle adjusting mechanism 5, described support bar 2 is arranged on base for supporting 1, brace summer 3 is arranged on support bar 2, brace summer 3 is provided with track, described overhead guard control device is arranged on brace summer 3, overhead guard control device is connected with the centre of overhead guard 10, described side cover bracing frame 4 has a pair, side cover bracing frame 4 is arranged in the track on brace summer 3, on the width of intermediate blank 8, side cover bracing frame 4 can move in track, side cover bracing frame 4 and side are covered 20 and are connected, described overhead guard angle adjusting mechanism 5 is arranged on overhead guard 10, the two ends of overhead guard angle adjusting mechanism 5 are arranged on level board 11 and hang plate 12 respectively, and can angle be locked, described overhead guard control device comprises stepper motor 6 and chain 7, and described stepper motor 6 is arranged on brace summer 3, and chain 7 one end is connected with stepper motor 6, and chain 7 other end is connected with the mid point of overhead guard 10 after walking around pulley pendency.
During work, chain 7 is pulled to control the raising height of overhead guard 10 by stepper motor 6.This height is according to factors such as the width of intermediate blank 8 and noses, and consider that 20 positions are covered in side plate side, synthesise various factor is determined.During use, stepper motor 6 controls chain 7 and moves, and puts down overhead guard 10, when overhead guard 10 contact side cover 20, the side cover contact signal switch 13 on side cover 20 sends and feeds back signal to stepper motor 6, and stepper motor 6 stops action, locking chain 7 position, thus ensure that overhead guard 10 falls completely.When upwards packing up overhead guard 10, stepper motor 6 pulls chain 7 to move upward, when the overhead guard contact signal switch 14 on overhead guard 10 contacts with brace summer 3, send and feed back signal to stepper motor 6, stepper motor 6 stop motion, locking chain 7, keeps top cover 10 position stability.
Side cover bracing frame 4 and side are covered 20 and are connected, symmetrical placement, and pulley is housed.During work, under the control of side cover movement controlling mechanism, according to the position calculating setting, symmetry is pulled to be placed on an offside cover bracing frame 4 on intermediate blank 8 width by chain, thus regulate side cover 20 to slide into correct position, and after being adjusted to assigned address, controlling organization locking chain, thus ensure that 20 invariant positions are covered in side, ensure that stay-warm case can not have displacement under gravity.In order to improve heat insulation effect, can also install fixed bottom cover between running roller, fixed bottom cover two ends are fixed with product line bracket, are arranged in the middle of running roller, and only retain comparatively small―gap suture between running roller.
In the present embodiment, high-temperature-resistant thermal-insulation coating coating layer thickness 12
, heatproof interval (-80 ~ 1800
), thermal conductivity factor 0.03
, effectively can suppress and shield the conduction of ultrared radiant heat and heat, heat insulation suppression efficiency can reach about 90%, can suppress scattering and disappearing of the heat radiation of high temp objects and heat.High temperature resistant reflective coating is at wavelength 2.5-15
spectrum range, emissivity is all more than 0.95; During work, when intermediate blank 8 thickness is 50
time, stay-warm case minimum point is 295 to intermediate blank 8 distance
, the angle of inclination of oblique side plate 12 is 8.48 degree, and it is 380 that 20 radiuses are covered in side
, can make intermediate blank 8 in the direction of the width temperature reach unanimity.
Claims (5)
1. one kind is reduced slab edge temperature drop hot rolling heat holding cover, it is characterized in that: cover (20) two parts by overhead guard (10) and side and form, described side cover (20) has a pair, one offside cover (20) is symmetricly set on the both sides of overhead guard (10), the shape of overhead guard (10) is that middle low both sides are high, side cover (20) is circular arc, described overhead guard (10) and side cover (20) inner surface are coated with one deck high-temperature-resistant thermal-insulation coating, and high-temperature-resistant thermal-insulation coating is also coated with the high temperature resistant reflective coating of one deck.
2. minimizing slab edge temperature drop hot rolling heat holding cover as claimed in claim 1, it is characterized in that: described overhead guard (10) is made up of one piece of level board (11) and a pair oblique side plate (12), described a pair oblique side plate (12) symmetry is hinged on the both sides of level board (11).
3. minimizing slab edge temperature drop hot rolling heat holding cover as claimed in claim 2, it is characterized in that: described side cover (20) top margin upper surface is equipped with side cover contact signal switch (13), and oblique side plate (12) top margin upper surface is equipped with overhead guard contact signal switch (14).
4. a claim 1, 2, the operating means of slab edge temperature drop hot rolling heat holding cover is reduced described in any claim in 3, it is characterized in that: comprise base for supporting (1), support bar (2), brace summer (3), overhead guard control device, side cover bracing frame (4) and overhead guard angle adjusting mechanism (5), described support bar (2) is arranged on base for supporting (1), brace summer (3) is arranged on support bar (2), brace summer (3) is provided with track, described overhead guard control device is arranged on brace summer (3), overhead guard control device is connected with the centre of overhead guard (10), described side cover bracing frame (4) has a pair, side cover bracing frame (4) is arranged in the track on brace summer (3), side cover bracing frame (4) is covered (20) and is connected with side, described overhead guard angle adjusting mechanism (5) is arranged on overhead guard (10).
5. the operating means reducing slab edge temperature drop hot rolling heat holding cover as claimed in claim 4, it is characterized in that: described overhead guard control device comprises stepper motor (6) and chain (7), described stepper motor (6) is arranged on brace summer (3), chain (7) one end is connected with stepper motor (6), and chain (7) other end is connected with the mid point of overhead guard (10) after walking around pulley pendency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110422044.XA CN103157670B (en) | 2011-12-16 | 2011-12-16 | Reducing slab portion temperature dropping hot milling heat holding cover and operating device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110422044.XA CN103157670B (en) | 2011-12-16 | 2011-12-16 | Reducing slab portion temperature dropping hot milling heat holding cover and operating device thereof |
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| Publication Number | Publication Date |
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| CN103157670A CN103157670A (en) | 2013-06-19 |
| CN103157670B true CN103157670B (en) | 2015-05-20 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652913B (en) * | 2014-11-14 | 2018-03-09 | 宝山钢铁股份有限公司 | Induction heating for steel plate process edge temprature control method and control device |
| CN106994466A (en) * | 2016-01-26 | 2017-08-01 | 宝山钢铁股份有限公司 | The control method that steel edge portion heater is symmetrically heated |
| CN110314940B (en) * | 2018-03-30 | 2020-08-25 | 宝山钢铁股份有限公司 | Heat preservation cover for heat preservation of hot rolled steel strip coil edge part |
| CN113510152B (en) * | 2021-09-09 | 2021-11-26 | 南通际维机电设备有限公司 | Metal rolling equipment is used in auto repair equipment production |
| CN113847183B (en) * | 2021-09-23 | 2022-09-30 | 上海鑫歆源电子有限公司 | Heat control module, drive circuit and ignition coil driver |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101182045B1 (en) * | 2004-12-27 | 2012-09-11 | 주식회사 포스코 | Thermo-instrument for controlling the cooling rate of the hot coil and the control method thereof |
| CN2803549Y (en) * | 2005-04-05 | 2006-08-09 | 鞍山市润辉冶金设备制造有限公司 | Thermal insulation cover on transferring roller way of continuous casting and rolling set for hot rolled strips |
| CN101670376A (en) * | 2008-09-09 | 2010-03-17 | 严宏生 | Hot rolling heat holding cover |
| CN201572790U (en) * | 2009-12-15 | 2010-09-08 | 山东泰山钢铁集团有限公司 | Heat insulation cover for coiling production line |
| CN102125932B (en) * | 2010-12-16 | 2012-11-07 | 重庆研镁科技有限公司 | Hot rolling device for magnesium alloy and rolling heating method |
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