CN103157670A - 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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- CN103157670A CN103157670A CN201110422044XA CN201110422044A CN103157670A CN 103157670 A CN103157670 A CN 103157670A CN 201110422044X A CN201110422044X A CN 201110422044XA CN 201110422044 A CN201110422044 A CN 201110422044A CN 103157670 A CN103157670 A CN 103157670A
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- overhead guard
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- heat holding
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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 the hot rolling heat holding field, relate in particular to a kind of hot rolling heat holding cover and operating means thereof.
Background technology
In course of hot rolling, in slab natural cooling process, slab dephosphorization cooling procedure, because intermediate temperature drop is slow, the cooling of limit section 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 limit section temperature is too low, makes in the slab production process limit section much higher hard, causes the heavy wear in rolled edge section zone, causes flatness defect, reduces hot rolling output; The temperature of width of plate slab direction is uneven, causes the slab internal soundness uneven, has a strong impact on the performance of hot-rolled product.If lip temperature is larger with the central temperature temperature difference, can cause the finishing stands cracking;
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, usually adopt the width temperature of the equipment solution slabs such as strip edge heater uneven in prior art on hot-rolled strip production line.Strip edge heater needs larger investment, needs to consume mass energy in production process.
And a large amount of stay-warm case equipment that adopt of line are produced in existing hot rolling, it is all a square heat preserving casing, can only play the insulation effect to a certain degree to slab, be mainly used in solving to a certain extent the temperature homogeneity problem of slab length direction, can not effectively 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 limit section's temperature drop hot rolling heat holding cover and operating means thereof, make slab temperature integral body on width be tending towards balanced, effectively controlled strip quality, the energy that has reduced aspect homogenization temperature drops into.
The present invention is achieved in that a kind of minimizing slab limit section temperature drop hot rolling heat holding cover, consisted of by overhead guard and side cover two parts, described side cover is total a pair of, one offside cover is symmetricly set on the both sides of overhead guard, in the middle of being shaped as of overhead guard, low both sides are high, the 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, also is coated with the high temperature resistant reflective coating of one deck on high-temperature-resistant thermal-insulation coating.
Described overhead guard is made of a level board and a pair of oblique side plate, and described a pair of 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 tiltedly side plate top margin upper surface is equipped with overhead guard contact signal switch.
a kind of operating means that reduces slab limit section temperature drop hot rolling heat holding cover, comprise base for supporting, support bar, brace summer, the 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, the overhead guard control device is connected with the centre of overhead guard, described side cover bracing frame is total a pair of, side cover bracing frame is arranged in track on brace summer, side cover bracing frame is connected with the side cover, 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 walked around and is connected with the mid point of overhead guard after pulley dangles.
The present invention reduces slab limit section's temperature drop hot rolling heat holding cover and operating means thereof, side cover by the high overhead guard in low both sides in the middle of adopting and circular arc and applied high temperature resistant reflective coating after dissipated heat in the middle of intermediate blank is re-assigned to the two ends of the width of slab, make slab temperature integral body on width be tending towards balanced, effectively controlled strip quality, the energy that has reduced aspect homogenization temperature drops into.
Description of drawings
Fig. 1 is that the present invention reduces slab limit section temperature drop hot rolling heat holding cover structural representation;
Fig. 2 is that the present invention reduces slab limit section's 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.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used for explanation the present invention and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's statement, these equivalent form of values fall within the application's appended claims limited range equally.
as shown in Figure 1, a kind of minimizing slab limit section temperature drop hot rolling heat holding cover, consisted of by overhead guard 10 and side cover 20 two parts, described side cover 20 is total a pair of, one offside cover 20 is symmetricly set on the both sides of overhead guard 10, in the middle of being shaped as of overhead guard 10, low both sides are high, side cover 20 is circular arc, described overhead guard 10 and side cover 20 inner surfaces are coated with one deck high-temperature-resistant thermal-insulation coating, also be coated with the high temperature resistant reflective coating of one deck on high-temperature-resistant thermal-insulation coating, high temperature resistant reflective coating can effectively reflect the heat of intermediate blank 8, and dissipated heat is re-assigned to the two ends of the width of intermediate blank 8 according to the reflection angle of overhead guard 10, the radian of side cover 20 is concentrated heat the limit section that reflexes to intermediate blank 8, make board briquette integral body be tending towards balanced, the angle of overhead guard 10 dual-side perks is determined by width of plate slab, even with the temperature of intermediate blank 8 on width after guaranteeing reflection.
When the actual use of this stay-warm case, according to the difference of producing line production steel grade width of plate slab, the angle of inclination, both sides of overhead guard 10 and the position of side cover 20 all need to regulate, so overhead guard 10 is made of a level board 11 and a pair of oblique side plate 12 in the present embodiment, described a pair of oblique side plate 12 symmetries are hinged on the both sides of level board 11; When putting down stay-warm case, overhead guard 10 is also put down after locking in the position that at first regulates side cover 20, and overhead guard 10 is contacted with side cover 20, then locks overhead guard 10; When opening stay-warm case, mention overhead guard 10, to contact and lock with brace summer 3, then control side cover 20 and move by side to two the home that sets and lock, thereby stay-warm case is opened.
In mentioning and putting down the process of overhead guard 10, control the position of overhead guards 10 by side cover contact signal switch 13 and the overhead guard contact signal switch 14 of oblique side plate 12 top margin upper surfaces dresses of side cover 20 top margin upper surfaces.
as Fig. 2, shown in 3, a kind of operating means that reduces slab limit section temperature drop hot rolling heat holding cover, comprise base for supporting 1, support bar 2, brace summer 3, the 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, the overhead guard control device is connected with the centre of overhead guard 10, described side cover bracing frame 4 is total a pair of, in the track that side cover bracing frame 4 is arranged 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 is connected with side cover 20, 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 respectively on level board 11 and hang plate 12, and can lock angle, 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 ends are connected with stepper motor 6, and chain 7 other ends are walked around and are connected with the mid point of overhead guard 10 after pulley dangles.
During work, pull chain 7 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, considers side plate side cover 20 positions, and the synthesise various factor is determined.During use, stepper motor 6 is controlled chain 7 and is moved, 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 positions, thus guarantee that overhead guard 10 falls fully.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 motions, locking chain 7 keeps top cover 10 position stabilities.
Side cover bracing frame 4 is connected with side cover 20, and left-right symmetry is placed, and pulley is housed.During work, under the control of the movable controlling organization of side cover, according to calculating the position of setting, pull symmetry to be placed on an offside cover bracing frame 4 on intermediate blank 8 widths by chain, thereby regulate side cover 20 and slide into correct position, after being adjusted to assigned address, controlling organization locking chain, thereby guarantee side cover 20 invariant positions, guarantee that stay-warm case can not have displacement under Action of Gravity Field.In order to improve heat insulation effect, between running roller, fixed bottom cover can also be installed, fixed bottom cover two ends and product line bracket are fixed, and are arranged in the middle of running roller, and only keep less gap between running roller.
In the present embodiment, the high-temperature-resistant thermal-insulation coating coating layer thickness 12
, heatproof interval (80 ~ 1800
), thermal conductivity factor 0.03
, can effectively suppress and shield the conduction of ultrared radiant heat and heat, heat insulation suppression efficiency can reach 90% left and right, can suppress the heat radiation of high temp objects and scattering and disappearing of 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 are 50
The time, the stay-warm case minimum point is 295 to intermediate blank 8 distances
, tiltedly the angle of inclination of side plate 12 is 8.48 degree, side cover 20 radiuses are 380
, can make intermediate blank 8 temperature on width reach unanimity.
Claims (5)
1. one kind is reduced slab limit section temperature drop hot rolling heat holding cover, it is characterized in that: consisted of by overhead guard (10) and side cover (20) two parts, described side cover (20) is total a pair of, one offside cover (20) is symmetricly set on the both sides of overhead guard (10), in the middle of being shaped as of overhead guard (10), 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, also are coated with the high temperature resistant reflective coating of one deck on high-temperature-resistant thermal-insulation coating.
2. minimizing slab as claimed in claim 1 limit section temperature drop hot rolling heat holding cover, it is characterized in that: described overhead guard (10) is made of a level board (11) and a pair of oblique side plate (12), and described a pair of oblique side plate (12) symmetry is hinged on the both sides of level board (11).
3. minimizing slab as claimed in claim 2 limit section temperature drop hot rolling heat holding cover, it is characterized in that: described side cover (20) top margin upper surface is equipped with side cover contact signal switch (13), and tiltedly side plate (12) top margin upper surface is equipped with overhead guard contact signal switch (14).
4. claim 1, 2, reduce the operating means of slab limit section temperature drop hot rolling heat holding cover in 3, it is characterized in that: comprise base for supporting (1), support bar (2), brace summer (3), the 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), the overhead guard control device is connected with the centre of overhead guard (10), described side cover bracing frame (4) is total a pair of, side cover bracing frame (4) is arranged in track on brace summer (3), side cover bracing frame (4) is connected with side cover (20), described overhead guard angle adjusting mechanism (5) is arranged on overhead guard (10).
5. the operating means of middle minimizing slab as claimed in claim 4 limit section temperature drop hot rolling heat holding cover, 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 ends are connected with stepper motor (6), and chain (7) other end is walked around and is connected with the mid point of overhead guard (10) after pulley dangles.
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 |
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| 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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| CN103157670A true CN103157670A (en) | 2013-06-19 |
| CN103157670B CN103157670B (en) | 2015-05-20 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652913A (en) * | 2014-11-14 | 2016-06-08 | 宝山钢铁股份有限公司 | Steel plate induction heating process edge portion temperature control method and control apparatus |
| 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 |
| CN110314940A (en) * | 2018-03-30 | 2019-10-11 | 宝山钢铁股份有限公司 | A kind of insulation cover for the heat preservation of hot rolled strip flanging part |
| CN113510152A (en) * | 2021-09-09 | 2021-10-19 | 南通际维机电设备有限公司 | Metal rolling equipment is used in auto repair equipment production |
| CN113847183A (en) * | 2021-09-23 | 2021-12-28 | 上海鑫歆源电子有限公司 | Heat control module, drive circuit and ignition coil driver |
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| CN101670376A (en) * | 2008-09-09 | 2010-03-17 | 严宏生 | Hot rolling heat preservation 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 |
| CN102125932A (en) * | 2010-12-16 | 2011-07-20 | 重庆研镁科技有限公司 | Hot rolling device for magnesium alloy and rolling heating method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105652913A (en) * | 2014-11-14 | 2016-06-08 | 宝山钢铁股份有限公司 | Steel plate induction heating process edge portion temperature control method and control apparatus |
| 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 |
| CN110314940A (en) * | 2018-03-30 | 2019-10-11 | 宝山钢铁股份有限公司 | A kind of insulation cover for the heat preservation of hot rolled strip flanging part |
| 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 |
| CN113510152A (en) * | 2021-09-09 | 2021-10-19 | 南通际维机电设备有限公司 | Metal rolling equipment is used in auto repair equipment production |
| CN113847183A (en) * | 2021-09-23 | 2021-12-28 | 上海鑫歆源电子有限公司 | Heat control module, drive circuit and ignition coil driver |
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| Publication number | Publication date |
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| CN103157670B (en) | 2015-05-20 |
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