SU624677A1 - Method of cleaning hot-rolled strip from scale - Google Patents
Method of cleaning hot-rolled strip from scaleInfo
- Publication number
- SU624677A1 SU624677A1 SU762426992A SU2426992A SU624677A1 SU 624677 A1 SU624677 A1 SU 624677A1 SU 762426992 A SU762426992 A SU 762426992A SU 2426992 A SU2426992 A SU 2426992A SU 624677 A1 SU624677 A1 SU 624677A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- scale
- strip
- rolled strip
- cleaning
- hot rolled
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning By Liquid Or Steam (AREA)
Description
Изобретение относитс к прокатному производству и может использоватьс дл очистки от окалины-гор чекатаной полосы в линии широкополосного стаиа гор чей прокатки.The invention relates to rolling production and can be used for descaling hot-rolled strip in a wide-strip hot-rolling line.
Известен способ очистки окапаны с гор чекатаной полосы, при котором окалина сбиваетс стру ми воды высокого давле1Ш 1.A known method of cleaning ditches from a hot-rolled strip, in which scale is strayed by jets of high-pressure water.
Сущность такого способа состоит в том, что в процессе движени гор чекатаной- полосы на ее плоскую поверхность подают струю воды высокого давлени , истекающую из сопл гидросбива. Под воздействием струи происходит быстрое охлаждение и по вление тепловых напр жений в окалине, в результате которых окалина отдел етс от нагретой под ней массы основного металла. При этом эффективность отделени окалины зависит от интенсивности теплообмена между нею и натекающим потоком воды. .The essence of this method is that in the process of moving the hot rolled strip onto its flat surface, a jet of high pressure water flows out of the jetting nozzles. Under the influence of the jet, rapid cooling occurs and the occurrence of thermal stresses in the scale, as a result of which the scale separates from the mass of the base metal heated below it. At the same time, the effectiveness of the separation of scale depends on the intensity of heat exchange between it and the flowing stream of water. .
Недостатком этого способа вл етс мала эффективность очистки окалины, обусловленна низкой интенсивностью теплоотдачи между струей воды и имеющей плоскую форму гор чей полосой.The disadvantage of this method is low scale cleaning efficiency, due to the low intensity of heat transfer between the water jet and the flat strip having a flat shape.
Цель изобретени - повышение эффективности очистки от окалины гор чекатаной полосы путем интенсификации теплообмена между окалиной и натекающим пЗтоком жидкости, а также путем создани в окалине дополнительных механических напр жений, усиливающих эффект отделени ее от основного металла.The purpose of the invention is to increase the efficiency of descaling of hot rolled strip by intensifying heat exchange between scale and flowing liquid, as well as by creating additional mechanical stresses in the scale, increasing the effect of separating it from the base metal.
Дл этого в предлагаемом способе в зоне контакта полосы со струей охладител , полосу подвергают принудительному изгибу.To do this, in the proposed method, in the zone of contact between the strip and the stream of the cooler, the strip is subjected to forced bending.
На чертеже схематически изображена Многократно изогнута полоса.The drawing schematically shows a strip that is repeatedly bent.
Сущность способа заключаетс в том, что, если нагрета полоса 1 в зоне ее контакта с натекающим потоком жидкости будет иметь форму поверхности вращени , то интенсивность теплоотдачи между окалиной и жидкостью значительно вьпле, чем дл полось, имеющей плоскую форму.The essence of the method is that if the heated strip 1 in the zone of its contact with the flowing liquid flow has the shape of a rotational surface, then the heat transfer intensity between the scale and the liquid is much warmer than for a polished surface.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU762426992A SU624677A1 (en) | 1976-12-07 | 1976-12-07 | Method of cleaning hot-rolled strip from scale |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU762426992A SU624677A1 (en) | 1976-12-07 | 1976-12-07 | Method of cleaning hot-rolled strip from scale |
Publications (1)
Publication Number | Publication Date |
---|---|
SU624677A1 true SU624677A1 (en) | 1978-09-25 |
Family
ID=20685474
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU762426992A SU624677A1 (en) | 1976-12-07 | 1976-12-07 | Method of cleaning hot-rolled strip from scale |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU624677A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0360480A2 (en) * | 1988-09-20 | 1990-03-28 | Hitachi, Ltd. | Descaling rolled material |
-
1976
- 1976-12-07 SU SU762426992A patent/SU624677A1/en active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0360480A2 (en) * | 1988-09-20 | 1990-03-28 | Hitachi, Ltd. | Descaling rolled material |
EP0360480A3 (en) * | 1988-09-20 | 1991-12-27 | Hitachi, Ltd. | Descaling rolled material |
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