SU1611490A1 - Method of winding thin cold-rolled strip to coil - Google Patents
Method of winding thin cold-rolled strip to coil Download PDFInfo
- Publication number
- SU1611490A1 SU1611490A1 SU894640823A SU4640823A SU1611490A1 SU 1611490 A1 SU1611490 A1 SU 1611490A1 SU 894640823 A SU894640823 A SU 894640823A SU 4640823 A SU4640823 A SU 4640823A SU 1611490 A1 SU1611490 A1 SU 1611490A1
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- SU
- USSR - Soviet Union
- Prior art keywords
- strip
- tension
- change
- winding
- welding
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Abstract
Изобретение относитс к прокатному производству, в частности к способам намотки тонкой холоднокатаной полосы в рулон. Цель изобретени - повышение качества намотки за счет исключени сварки витков при отжиге рулона и уменьшени неплоскостности полосы. Это достигаетс благодар изменению нат жени с числом периодов, определ емым по зависимости N=K.δп/H+0,5, где N - число цикловThis invention relates to rolling production, in particular to methods for winding thin cold rolled strip into a roll. The purpose of the invention is to improve the quality of the winding by eliminating the welding of turns when annealing the coil and reducing the flatness of the strip. This is achieved due to a change in tension with the number of periods determined by the N = K dependence . δ p / H + 0.5, where N is the number of cycles
δп - абсолютна поперечна разнотолщинность, ммδ p - absolute transverse thickness difference, mm
H - толщина полосы, ммH - strip thickness, mm
K - коэффициент пропорциональности, K=400...7000K - proportionality coefficient, K = 400 ... 7000
0,5 - число периодов изменени нат жении при намотке полосы с разнотолщинностью δп=0.0.5 is the number of periods of change in tension when the strip is wound with a thickness difference δ n = 0.
Description
Рассчитанное число циклов округл ют : точностью до О,5.Изменение нат жени смотки осуществл етс в автоматическом режиме, измен установку час- тоты в соответствшт с полученным числом циклов. ;The calculated number of cycles is rounded: up to 0. 5. Change of the coil tension is carried out in automatic mode, changing the frequency setting in accordance with the number of cycles obtained. ;
. После отжига рулонов.в колпаковых печах в процессе дрессировки оцениваетс степень сварки витков, качество поверхности (по наличию и интенсивности изломов), планшетность полос цо наличию и величине локальной не- готоскостности в местах сварки, а также определ етс дол некондиционного металла по указанньм дефектам.. After annealing of coils in bell-type furnaces during the process of training, the degree of welding of the coils, the quality of the surface (by the presence and intensity of fractures), the flatness of the strip, the presence and magnitude of local inadequacy at the welding sites, and the fraction of the defective metal by the specified defects are evaluated.
Результаты иеполнени способа представлены в таблице.The results of the method are presented in the table.
Согласно экспериментальньм данным при использовании способа существенно сокращаютс сварка металла и количество металла с изломами и наруше- ни ми планшетности, уменьшаетс дол металла, отсортировьгоаемого в Некондицию . , According to experimental data, when using the method, the welding of the metal and the amount of metal with fractures and flatness violations are significantly reduced, the proportion of metal sorted into non-standard is reduced. ,
Технико-экономический эффект от внедрени изобретени обеспечиваетс по, сравнению с известным способом благодар повъшению качества намоткиThe technical and economic effect of the implementation of the invention is provided by, compared with the known method due to the increase in the quality of winding.
ормулаformula
4four
йзобретениInvention
с with
5 five
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Способ намотки тонкой холоднокатаной полосы в рулон, вклн}чающий нат жение полосы с его изменением в про- цессе намотки по синусоидальному закону с амплитудой, составл ющей 0,1- 0,3 номинального нат жени ,при соот- о ветствующей периодичности изменени нат жени , отличающийс тем, что, с целью повьшени качества намотки полосы за счет исключени сварки витков при отжиге рулона и уменьшени неплоскостности полосы, предварительно определ ют абсолютную поперечную разнотолщинность полосы, а изменение нат жени по упом нутому закону осуществл ют с периодичностью с числом п периодов, определ емым по зависимости:The method of winding a thin cold-rolled strip into a roll, including tension of the strip with its change in the process of winding according to a sinusoidal law with an amplitude of 0.1-0.3 nominal tension, with a corresponding frequency of tension characterized in that, in order to increase the quality of the strip winding by eliminating the welding of turns when annealing the coil and reducing the flatness of the strip, the absolute transverse thickness variation of the strip is previously determined, and the tension change according to the aforementioned law exhibit a periodicity with a number n of periods defined by the function of:
LL
пP
0,5,0.5,
где К - коэффициент пропор1щональности , К 400-700; абсолютна поперечна разнотолщинность , MMJ h - толщина полосы, мм; 0,5 - число периодов изменени нат жений при намотке -полосы с разнотолщинностью flj, О,where K is a proportionality factor, K 400-700; absolute transversal thickness, MMJ h - strip thickness, mm; 0.5 - the number of periods of change in tension during winding - bands with different thicknesses flj, O,
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU894640823A SU1611490A1 (en) | 1989-01-25 | 1989-01-25 | Method of winding thin cold-rolled strip to coil |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU894640823A SU1611490A1 (en) | 1989-01-25 | 1989-01-25 | Method of winding thin cold-rolled strip to coil |
Publications (1)
Publication Number | Publication Date |
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SU1611490A1 true SU1611490A1 (en) | 1990-12-07 |
Family
ID=21424349
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU894640823A SU1611490A1 (en) | 1989-01-25 | 1989-01-25 | Method of winding thin cold-rolled strip to coil |
Country Status (1)
Country | Link |
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SU (1) | SU1611490A1 (en) |
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1989
- 1989-01-25 SU SU894640823A patent/SU1611490A1/en active
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