CN104131152B - The treatment process of wooden dipper song in a kind of thin wide specification IF steel stove - Google Patents
The treatment process of wooden dipper song in a kind of thin wide specification IF steel stove Download PDFInfo
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- CN104131152B CN104131152B CN201410336596.2A CN201410336596A CN104131152B CN 104131152 B CN104131152 B CN 104131152B CN 201410336596 A CN201410336596 A CN 201410336596A CN 104131152 B CN104131152 B CN 104131152B
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Abstract
The present invention provides the treatment process of wooden dipper song in a kind of thin wide specification IF steel stove, when its method opens car again after thin wide specification IF steel stops in continuous annealing furnace, what set heating zone, soaking zone, slow cooling section, rapid cooling section and overaging section opens car temperature and tension force, vehicle speed is opened in setting, and opens in car process manual intervention next section of correction direction after IF steel wooden dipper song. The treatment process of wooden dipper song in the thin wide specification IF steel stove of kind provided by the invention, by optimize each section of stove district open car temperature and open car tension force, control stove district open vehicle speed, taking the measures such as manual intervention next section of correction direction, the thin wide specification IF steel broken belt number of times that sideslip is caused obviously reduces.
Description
Technical field
The invention belongs to cold rolled sheet annealing technology field, in particular to the treatment process of wooden dipper song in a kind of thin wide specification IF steel stove.
Background technology
IF steel, i.e. gapless atomic steel, also claim ultra low-carbon steel sometimes, has extremely excellent deep drawability, and present elongation and r value can reach 50% and more than 2.0, are widely applied in automotive industry. In IF steel, owing to C, N content are low, adding the strong carboritride formation element such as a certain amount of titanium (Ti), niobium (Nb), the interstitial atoms such as the carbon in ultra low-carbon steel, nitrogen are completely fixed for carboritride, thus the clean ferritic steel of the gap-free atom obtained, it is Ultra-low carbon gapless atomic steel.
The primary thickness scope of auto sheet is 0.7��1.2mm, width range is 1400��1800mm, based on EDDQ/SEDDQ-IF steel plate, the principal feature of auto sheet is carbon content low (C��0.002%), there is good deep drawability, but, the IF steel of thin wide specification very easily occurs high temperature wooden dipper bent in stove, and not easily unit high speed, production efficient, high-quality are moved back by the company of realization. If thin wide specification auto sheet there occurs that in stove serious wooden dipper is bent, may finally cause parking blow-on major disaster, process stove district bent accident usual used time 20 hours of wooden dipper, not only seriously have impact on rhythm of production, also can produce a large amount of waste products, therefore, stopping very easily wooden dipper because speed in the thin wide specification IF steel stove that various fault causes is anxious bent, the loss brought is very big. When normally producing, any equipment failure completely all may cause the anxious parking in stove district, the annealing temperature of IF steel is higher in addition, very easily cause thin wide specification IF steel wooden dipper in stove bent, the treatment process of the IF steel wooden dipper song how improving thin wide specification reflects district's troubleshooting capability of coming out of the stove, and reflects the degree of understanding to continuous annealing furnace.
Summary of the invention
It is an object of the invention to provide the treatment process of wooden dipper song in a kind of thin wide specification IF steel stove, to solve to stop because continuous annealing furnace is anxious, the band steel broken belt accident that band steel wooden dipper is bent and causes occurs.
For solving the problems of the technologies described above, the present invention provides the treatment process of wooden dipper song in a kind of thin wide specification IF steel stove, for preventing the method for IF steel sideslip broken belt when thin wide specification IF steel opens car after stopping in continuous annealing furnace again, comprising:
In advance heating zone temperature and soaking zone temperature being set as 430-470 DEG C, slow cooling section temperature is set as 620-630 DEG C, and rapid cooling section temperature is set as 340-350 DEG C, and overaging temperature is set as 430-470 DEG C, and each section of described stove district temperature reaches design temperature and opens car;
When will open car, heating zone and soaking zone tension force are set as 4.5-5.5KN, and slow cooling section and rapid cooling section tension force are set as 7.0-8.0KN, and overaging section tension force is set as 5.5-6.5KN, and cold section of tension force is set as 7.0-8.0KN eventually;
Vehicle speed will be opened and it will be set as 30-50mpm;
Open and car process is wanted after IF steel wooden dipper song manual intervention next section of correction direction.
Further, described correction direction is contrary with strip running deviation direction, it is achieved centering of strip steel correction and centering are run.
Further, described thin wide specification IF steel refers to that thickness is 0.6-0.8mm, and width is the IF steel of 1640mm-1850mm.
Further, when described thin wide specification IF steel generation wooden dipper is bent and causes sideslip more than 40mm, the tension force of corresponding increase sideslip stove section, corresponding tension force increases 0.5KN every time.
The treatment process of wooden dipper song in thin wide specification IF steel stove provided by the invention, according to thin wide specification IF steel, in the anxious parking Hou Lu district of continuous annealing furnace, very easily wooden dipper is bent, and cause surface that the IF steel easily sideslip in stove of fold occurs, scrape the equipment such as furnace wall and cool wind box, cause the situation of band steel broken belt accident, by optimizing, car tension force is opened in stove district, car temperature is opened in optimization stove district, vehicle speed is opened in control stove district, taking the measure in manual intervention correction direction, the IF steel broken belt number of times that sideslip is caused obviously reduces.
Embodiment
The treatment process of wooden dipper song in a kind of thin wide specification IF steel stove that the embodiment of the present invention provides, prevents IF steel sideslip broken belt when opening car again after stopping in continuous annealing furnace for thin wide specification IF steel, comprises following measure:
Thin wide specification IF steel is in continuous annealing furnace in continuous annealing process, because various fault causes thin wide specification IF steel when parking had to go to the toilet by continuous annealing furnace, do not open car at once, but set the temperature of in stove each section in advance, owing to temperature sets the too low probability that will increase IF steel sideslip, the temperature too high probability that will increase IF steel wooden dipper song of setting, therefore in advance heating zone temperature and soaking zone temperature are set as 430-470 DEG C, slow cooling section temperature is set as 620-630 DEG C, rapid cooling section temperature is set as 340-350 DEG C, overaging temperature is set as 430-470 DEG C, car can be opened when each section of temperature drops to the temperature set in advance in stove.
Due in stove each section tension force setting the too low probability that will increase IF steel sideslip, the tension force too high probability that will increase again IF steel wooden dipper song of setting, when therefore will open car, heating zone and soaking zone tension force are set as 4.5-5.5KN, slow cooling section and rapid cooling section tension force are set as 7.0-8.0KN, overaging section tension force is set as 5.5-6.5KN, and cold section of tension force is set as 7.0-8.0KN eventually.
If IF steel opens, vehicle speed is low can aggravate wooden dipper Qu Chengdu, opens vehicle speed height and can aggravate IF Gang Lu district sideslip degree, therefore will open vehicle speed and be set as 30-50mpm.
Opening in car process, IF steel once after wooden dipper song, manual intervention hypomere correction direction, namely hypomere correction direction is contrary with strip running deviation direction, and when sideslip band steel enters manual deviation rectification stove section, band steel obtains centering and revises, realize centering of strip steel correction and centering operation, reduce sideslip degree. If band steel in stove to fore side sideslip, HMI picture manually to be run next section of deviation rectification roller, band steel is rectified a deviation to back side, if band steel in stove to back side sideslip, HMI picture manually to be run next section of deviation rectification roller, band steel is rectified a deviation to fore side, and manual correction amount and the interior actual running deviation value of stove are quite. If when thin wide specification IF steel generation wooden dipper is bent and causes sideslip more than 40mm, the tension force of corresponding increase sideslip stove section, corresponding tension force increases 0.5KN every time.
Wherein, thin wide specification IF steel refers to that thickness is 0.6-0.8mm, and width is the IF steel of 1640mm-1850mm, and its each thin wide specification IF steel is corresponding open car temperature and open car tension force is as shown in table 1:
Table 1
The treatment process of wooden dipper song in a kind of thin wide specification IF steel stove provided by the invention, concrete operation is as follows:
Strip steel specification in stove when 1, first confirming to stop in stove district, Dai Lu district heating zone temperature and soaking zone decrease in temperature are to 430-470 DEG C, and slow cooling section decrease in temperature is to 620-630 DEG C, and rapid cooling section decrease in temperature is to 340-350 DEG C, overaging decrease in temperature is to 430-470 DEG C, and then again opens car.
2, each for stove district section tension force being set as: heating zone tension force is 5.0-5.5KN, slow cooling and rapid cooling section tension force are 7.0-8.0KN, and overaging tension force is 6.0-7.0KN, and cold section of tension force is 7.0-8.0KN eventually. If IF steel generation wooden dipper is bent and causes its sideslip more than 40mm, the tension force of corresponding increase sideslip stove section, increases 0.5KN every time, but maximum tension should not more than the 30% of two grades of tension force.
Run with 30mpm speed when 3, opening car, opening car working time is 3-5 minute, period observes stove district IF steel wooden dipper song and sideslip situation, if stove district IF steel does not have, wooden dipper is bent just progressively puies forward BF Area speed to 50mpm with sideslip, if occurring wooden dipper song or sideslip just IF steel transfer rate to be controlled to 30-40mpm.
If when 4 stove district IF steel wooden dippers are bent and cause sideslip, answer the correction direction of next section of manual intervention, if namely IF steel is to fore side sideslip, next section of Yao Lu district manually utilizes deviation rectification roller function that band steel is rectified a deviation to back side, obtain centering when making IF steel enter next section to revise, in order to avoid running deviation value is excessive cuts the broken belt rubbing furnace wall and causing to pieces.
The running deviation value controlling the thin wide specification IF steel wooden dipper song in stove district by above optimized Measures and cause, makes the bent IF steel of parking wooden dipper in stove progressively climb out of stove district, gets rid of the great stove district broken belt fault that may cause. Table 2 is after implementing the treatment process of wooden dipper song in thin wide specification IF steel stove provided by the invention in recent years, the broken belt number of times of annual thin wide specification IF steel
Table 2
| Time | 2010 | 2011 | 2012 |
| Broken belt number of times | 5 | 4 | 3 |
Owing to broken belt accident all to be carried out blow-on treatment scheme after occurring, comprise blow sweep, lower the temperature, blow-on, excision waste strip, connecting band headband tail human weld, banking, blow a series of processes such as sweeping, heat up and climb transition volume, whole flow process needs 30 hours, not considering that production capacity affects, the cost that can be situated between after the generation of each broken belt accident is about 80,000 yuan. As can be seen from Table 2, after using the treatment process of wooden dipper song in thin wide specification IF steel stove provided by the invention, the broken belt number of times of thin wide specification IF steel obviously reduces, and not only increases the waste that it also avoid the cost that can be situated between along steady operation in thin wide specification IF Gang Lu district.
It should be noted last that, above embodiment is only in order to illustrate the technical scheme of the present invention and unrestricted, although with reference to example to invention has been detailed explanation, it will be understood by those within the art that, the technical scheme of the present invention can be modified or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the right of the present invention.
Claims (3)
1. the treatment process of wooden dipper song in thin wide specification IF steel stove, for preventing the method for IF steel sideslip broken belt when thin wide specification IF steel opens car after stopping in continuous annealing furnace again, it is characterised in that, comprising:
In advance heating zone temperature and soaking zone temperature being set as 430-470 DEG C, slow cooling section temperature is set as 620-630 DEG C, and rapid cooling section temperature is set as 340-350 DEG C, and overaging temperature is set as 430-470 DEG C, and each section of stove district temperature reaches design temperature and opens car;
When will open car, heating zone and soaking zone tension force are set as 4.5-5.5KN, and slow cooling section and rapid cooling section tension force are set as 7.0-8.0KN, and overaging section tension force is set as 5.5-6.5KN, and cold section of tension force is set as 7.0-8.0KN eventually;
Vehicle speed will be opened and it will be set as 30-50mpm;
Opening and want manual intervention next section of correction direction in car process after IF steel wooden dipper song, when described IF steel generation wooden dipper is bent and causes sideslip more than 40mm, the tension force of corresponding increase sideslip stove section, corresponding tension force increases 0.5KN every time.
2. the treatment process of wooden dipper song in thin wide specification IF steel stove according to claim 1, it is characterised in that: described correction direction is contrary with strip running deviation direction, it is achieved centering of strip steel correction and centering operation.
3. the treatment process of wooden dipper song in thin wide specification IF steel stove according to claim 1, it is characterised in that: described thin wide specification IF steel refers to that thickness is 0.6-0.8mm, and width is the IF steel of 1640mm-1850mm.
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| CN104531977A (en) * | 2014-12-28 | 2015-04-22 | 鞍钢冷轧钢板（莆田）有限公司 | Operation method for correcting strip steel operation line deflection scraping |
| CN105506269B (en) * | 2015-12-18 | 2018-06-26 | 武汉钢铁有限公司 | The anti-deviation method of the phosphorous high-strength steel of continuous annealing unit |
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| CN106566917B (en) * | 2016-11-11 | 2019-03-01 | 北京首钢冷轧薄板有限公司 | A kind of continuous annealing unit IF steel product opens vehicle control method again |
| CN107891065B (en) * | 2017-10-24 | 2019-06-07 | 首钢京唐钢铁联合有限责任公司 | A method of prevent Thin Strip Steel from opening the disconnected band of vehicle |
| CN108384944B (en) * | 2018-02-26 | 2020-02-21 | 首钢京唐钢铁联合有限责任公司 | Method for preventing buckling of strip steel in annealing furnace |
| CN108796204B (en) * | 2018-06-13 | 2020-01-21 | 武汉钢铁有限公司 | Production method of super deep drawing grade steel |
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| CN110331276B (en) * | 2019-07-17 | 2020-12-15 | 首钢京唐钢铁联合有限责任公司 | Anti-buckling start method for annealing furnace |
| CN111334648A (en) * | 2020-03-31 | 2020-06-26 | 鞍钢股份有限公司 | Method for preventing ultrathin IF steel of continuous annealing unit from wrinkling |
| CN111411214B (en) * | 2020-04-17 | 2021-11-23 | 新余钢铁股份有限公司 | Method for preventing buckling and deflection in strip steel continuous annealing furnace with thickness of not more than 0.5mm |
| CN111850286A (en) * | 2020-06-15 | 2020-10-30 | 华菱安赛乐米塔尔汽车板有限公司 | Application method for preventing ultra-wide IF steel from being buckled by cold |
| CN114700373A (en) * | 2022-03-10 | 2022-07-05 | 首钢京唐钢铁联合有限责任公司 | Starting tension control method for raw material plate and related equipment |
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| CN102776352B (en) * | 2011-05-12 | 2014-08-27 | 上海宝信软件股份有限公司 | Band steel return control apparatus after shutdown of continuous annealing furnace |
| CN103468922B (en) * | 2012-06-06 | 2015-01-21 | 上海梅山钢铁股份有限公司 | Control method for preventing thermal buckling of annealing furnace strip steel |
| CN102719742B (en) * | 2012-06-18 | 2014-01-29 | 首钢总公司 | Furnace zone through plate method of limit-specification IF steel |
| CN103710523A (en) * | 2013-12-20 | 2014-04-09 | 鞍钢股份有限公司 | Method for controlling wrinkle in continuous annealing of wide interstitial-free steel (IF) |
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Address after: 100041 Shijingshan Road, Beijing, No. 68, No. Patentee after: Shougang Group Co. Ltd. Address before: 100041 Shijingshan Road, Beijing, No. 68, No. Patentee before: Capital Iron & Steel General Company |