EP0608286A1 - Hot-rolling process and hot-rolling mill for metal strip. - Google Patents
Hot-rolling process and hot-rolling mill for metal strip.Info
- Publication number
- EP0608286A1 EP0608286A1 EP92921087A EP92921087A EP0608286A1 EP 0608286 A1 EP0608286 A1 EP 0608286A1 EP 92921087 A EP92921087 A EP 92921087A EP 92921087 A EP92921087 A EP 92921087A EP 0608286 A1 EP0608286 A1 EP 0608286A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metal strip
- work rolls
- roll gap
- jackets
- roll
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002184 metal Substances 0.000 title claims abstract description 45
- 238000005098 hot rolling Methods 0.000 title claims abstract description 16
- 239000002826 coolant Substances 0.000 claims abstract description 11
- 238000005507 spraying Methods 0.000 claims abstract description 8
- 238000009835 boiling Methods 0.000 claims abstract description 5
- 239000000110 cooling liquid Substances 0.000 claims description 23
- 239000007921 spray Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 11
- 230000007547 defect Effects 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract 4
- 238000005096 rolling process Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- B21B45/02—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 lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/06—Lubricating, cooling or heating rolls
- B21B27/10—Lubricating, cooling or heating rolls externally
Definitions
- the invention has for its object to provide a hot rolling method and a hot rolling mill for metal strip, with which it is possible to roll metal strips without surface defects caused by defects (peeling points or deposits) due to the surfaces of the work rolls.
- the invention is based on a method for hot-rolling metal strip in one or more passes, spraying it on the inlet side and, if appropriate, on the outlet side of the roll stand (s) together with the work rolls a cooling liquid is cooled.
- the solution according to the invention consists in the fact that the spraying of cooling liquid on the inlet side takes place in an area extending over the entire width of the metal strip as close as possible in front of the roll gap onto the metal strip and onto the jackets of the work rolls, in such a way that the The temperature on the surface of the jackets of the work rolls immediately before the roll gap is below the boiling temperature of the cooling liquid.
- a hot rolling mill for metal strips consisting of one or more work rolls comprising rolling stands with the work rolls, at least on their inlet side, assigned spray nozzles for a cooling liquid.
- the solution according to the invention consists in that the spray nozzles arranged on the feed side are directed onto or into the roll gap, such that the jackets of the work rolls and the metal strip are as close as possible in front of the one across the entire width of the metal strip to be rolled Cooling liquid extending region are applied.
- the cooling of work rolls in hot rolling mills is optimally used to keep the jackets of the work rolls at a temperature that is not critical for a deformation of the jackets.
- cooling liquid is not only selectively applied to the jackets of the work rolls, but also to the sides of the incoming warm metal strip facing the work rolls, the cooling liquid sprayed onto the metal strip protects the jackets of the work rolls from the radiant heat of the metal strip . Reheating of the already cooled surfaces of the work rolls shortly before entering the roll gap, as happens according to the method known from DE-C2 26 52 845 with wipers on the feed side, does not take place with it.
- the cooling liquid preferably consists predominantly of water. Common lubricants can be added to the water. The boiling point of the coolant thus depends on the type and composition of the coolant.
- a cooling liquid should be used, with which the surface temperature of the work rolls is kept below a temperature of 90 ° C to 110 ° C.
- the surface temperature should preferably be brought to and maintained at a value of ⁇ 75 ° C., in particular ⁇ 50 ° C.
- the area to which cooling liquid is applied and which extends into the roll gap should have a maximum width of 800 mm, preferably less than 500 mm, in the rolling direction.
- the cooling intensity of the sprayed-on cooling liquid is particularly high when the spray nozzles are directed with their core jets onto the jackets of the work rolls.
- the cooling liquid primarily hits the jackets and is deflected into the roll gap and onto the metal strip.
- favorable turbulence is generated for uniform cooling of the metal strip, so that no strips which are detrimental to the strip quality can form or be avoided on the metal strip surfaces.
- the roll stand has a lower and an upper work roll 1, 2 and supporting rolls 3, 4 supporting them.
- An incoming warm metal strip 5, in particular steel strip, with a thickness D is reduced to a thickness d in this roll stand.
- Spray nozzles 6, 7, 8, 9 for a cooling liquid are arranged on the inlet side of the metal strip 5 and on the outlet side over the entire width of the metal strip. While the outlet-side spray nozzles 8, 9 are directed towards the jackets of the work rolls 1, 2, the inlet-side spray nozzles 6, 7 are essentially directed towards or into the roll gap.
- At least the spray nozzles 6, 7 on the inlet side are designed as flat jet nozzles, the spray cones of which overlap at an angle ⁇ in the edge regions such that uniform cooling over the width of the metal strip 5 is thereby achieved. While the core jets 10 of the lower spray nozzles 6 are directed exactly into the roll gap, the core jets 11 of the spray nozzles 7 are deflected by an angle ⁇ with respect to the jet direction in the roll gap, so that they hit the jacket of the work roll 2 at an angle and here in Direction of the tape 5 are deflected.
- This second setting of the core jets 11 is preferred because this leads to greater turbulence of the cooling liquid and the area on the metal strip 5 covered by the spray cone with an opening angle ⁇ has a smaller width a than the width a 'of the spray cone the core jets 10 which are directed exactly into the roll gap.
- this second setting causes, in particular, uniform cooling of the metal strip in the regions with the widths a and a '.
- the shells of the work rolls 1, 2 are assigned temperature sensors 12, 13. They can be used to determine the surface temperature of the jackets in order to relate to the coolant to be sprayed on Adjust the temperature and volume in such a way that the jackets of the work rolls 1, 2 have a surface temperature at least immediately before the roll gap, which is below the boiling point of the cooling liquid. For this dimensioning, other influencing variables, such as the throughput speed of the metal strip 5 and possibly the surface temperature of the metal strip 5, can be taken into account, which can be determined by further sensors 14, 15.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Control Of Metal Rolling (AREA)
- Belt Conveyors (AREA)
- Catalysts (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4134599A DE4134599C1 (en) | 1991-10-18 | 1991-10-18 | |
DE4134599 | 1991-10-18 | ||
PCT/EP1992/002314 WO1993007974A1 (en) | 1991-10-18 | 1992-10-08 | Hot-rolling process and hot-rolling mill for metal strip |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0608286A1 true EP0608286A1 (en) | 1994-08-03 |
EP0608286B1 EP0608286B1 (en) | 1995-12-20 |
Family
ID=6443009
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92921087A Expired - Lifetime EP0608286B1 (en) | 1991-10-18 | 1992-10-08 | Hot-rolling process and hot-rolling mill for metal strip |
Country Status (11)
Country | Link |
---|---|
US (1) | US5694799A (en) |
EP (1) | EP0608286B1 (en) |
KR (1) | KR100187334B1 (en) |
CN (1) | CN1039102C (en) |
AT (1) | ATE131754T1 (en) |
CA (1) | CA2121341C (en) |
DE (1) | DE4134599C1 (en) |
ES (1) | ES2082510T3 (en) |
MX (1) | MX9205952A (en) |
TW (1) | TW207968B (en) |
WO (1) | WO1993007974A1 (en) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3422671B2 (en) * | 1997-12-05 | 2003-06-30 | 三菱重工業株式会社 | Method and apparatus for suppressing scale flaw generation during hot finish rolling |
JP3784948B2 (en) * | 1997-12-05 | 2006-06-14 | 三菱重工業株式会社 | Method and apparatus for suppressing surface oxide film during hot finish rolling |
DE19953230C2 (en) * | 1999-11-04 | 2003-08-28 | C D Waelzholz Produktionsgmbh | Cold rolling process |
FR2803548B1 (en) * | 2000-01-10 | 2002-04-19 | Vai Clecim | METHOD AND DEVICE FOR THERMALLY CONTROLLING THE PROFILE OF A CYLINDER IN A ROLLER |
DE10131369A1 (en) * | 2001-06-28 | 2003-01-09 | Sms Demag Ag | Method and device for cooling and lubricating rolls of a roll stand |
DE10143252A1 (en) * | 2001-09-04 | 2003-03-20 | Sms Demag Ag | Device for applying lubricants to the peripheral surface of rolls in roll stands |
US8464565B2 (en) * | 2003-12-24 | 2013-06-18 | Nippon Steel & Sumitomo Metal Corporation | System for supplying lubricant, apparatus for manufacturing seamless pipes or tubes, and method of manufacturing seamless pipes or tubes |
BE1017462A3 (en) * | 2007-02-09 | 2008-10-07 | Ct Rech Metallurgiques Asbl | DEVICE AND METHOD FOR COOLING ROLLING CYLINDERS IN HIGHLY TURBULENT. |
KR100987527B1 (en) * | 2007-03-14 | 2010-10-13 | 가부시키가이샤 아이에이치아이 | Switchable multistage rolling mill |
EP2014379A1 (en) * | 2007-06-04 | 2009-01-14 | ArcelorMittal France | Rolling mill with cooling device and rolling process |
DE102008049537A1 (en) | 2008-09-30 | 2010-04-01 | Sms Siemag Aktiengesellschaft | Method and apparatus for cooling a sliver or strip of a metal strand in a hot rolling mill |
KR101077174B1 (en) | 2009-04-21 | 2011-10-27 | 주식회사 포스코 | Cooling apparatus of workroll in in-line reduction mill |
CN101966606B (en) * | 2010-09-26 | 2011-12-07 | 南京航空航天大学 | Method and device for controlling milling deformation of large sized structural member |
JP6201430B2 (en) * | 2013-05-29 | 2017-09-27 | 新日鐵住金株式会社 | Lubricating oil supply method and lubrication rolling method for cold rolling mill |
WO2017115110A1 (en) * | 2015-12-30 | 2017-07-06 | Arcelormittal | Process and device for cooling a metal substrate |
WO2017188179A1 (en) * | 2016-04-28 | 2017-11-02 | 新日鐵住金株式会社 | H-shaped steel manufacturing method |
CN108856314A (en) * | 2018-07-12 | 2018-11-23 | 西南铝业(集团)有限责任公司 | Coating metal band cooling device |
CN109967704A (en) * | 2019-05-10 | 2019-07-05 | 中冶赛迪重庆信息技术有限公司 | A kind of continuous casting rolling device |
KR102229519B1 (en) * | 2019-05-22 | 2021-03-18 | 한국원자력연구원 | METHOD FOR MANUFACTURING URANIUM TARGET TO BE SOLUBLE IN BASIC SOLUTION AND METHOD FOR EXTRACTING RADIOACTIVE Mo-99 USING THE SAME |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU127275A1 (en) * | 1959-09-19 | 1959-11-30 | Л.А. Быков | Sleep methodological furnace |
US3301029A (en) * | 1964-07-06 | 1967-01-31 | Reynolds Metals Co | Working aluminous metals |
SE309765B (en) * | 1964-12-08 | 1969-04-08 | Asea Ab | |
JPS499031B1 (en) * | 1970-12-22 | 1974-03-01 | ||
US3911704A (en) * | 1973-02-23 | 1975-10-14 | Aluminum Co Of America | Metal rolling |
SU571313A1 (en) * | 1975-04-18 | 1977-09-05 | Московский Ордена Трудового Красного Знамени Институт Стали И Сплавов | Method of cooling rolls of hot rolling mills |
DE2652845A1 (en) * | 1976-11-20 | 1978-05-24 | Schloemann Siemag Ag | DEVICE FOR COOLING WORK ROLLERS IN HOT STRIP MILLS |
JPS5948688B2 (en) * | 1977-04-13 | 1984-11-28 | 株式会社日立製作所 | Coolant device for reversible rolling mill |
US4247047A (en) * | 1979-01-15 | 1981-01-27 | Schaming Edward J | Modular zoned digital coolant control system for strip mill rolls |
JPS5945444B2 (en) * | 1980-12-22 | 1984-11-06 | 新日本製鐵株式会社 | Roll cooling method in hot rolling |
US4510784A (en) * | 1983-10-11 | 1985-04-16 | Kaiser Aluminum & Chemical Corporation | Rolling mill spray bar |
SU1227275A1 (en) * | 1984-07-04 | 1986-04-30 | Всесоюзный Научно-Исследовательский И Проектный Институт По Очистке Технологических Газов,Сточных Вод И Использованию Вторичных Энергоресурсов Предприятий Черной Металлургии | Method of cooling rolling mill rolls during rolling |
NL8403821A (en) * | 1984-12-17 | 1986-07-16 | Hoogovens Groep Bv | Apparatus for cooling a working roller in a rolling mill for rolling metal strip. |
JPH0755326B2 (en) * | 1986-03-27 | 1995-06-14 | 日本鋼管株式会社 | Cooling device for hot rolling roll |
SU1426665A1 (en) * | 1987-07-10 | 1988-09-30 | Всесоюзный научно-исследовательский и проектно-конструкторский институт металлургического машиностроения им.А.И.Целикова | Method of cooling the rolling mill rolls and rolled stock |
-
1991
- 1991-10-18 DE DE4134599A patent/DE4134599C1/de not_active Expired - Fee Related
-
1992
- 1992-10-08 WO PCT/EP1992/002314 patent/WO1993007974A1/en active IP Right Grant
- 1992-10-08 AT AT92921087T patent/ATE131754T1/en active
- 1992-10-08 US US08/211,846 patent/US5694799A/en not_active Expired - Lifetime
- 1992-10-08 CA CA002121341A patent/CA2121341C/en not_active Expired - Fee Related
- 1992-10-08 KR KR1019940701250A patent/KR100187334B1/en not_active IP Right Cessation
- 1992-10-08 EP EP92921087A patent/EP0608286B1/en not_active Expired - Lifetime
- 1992-10-08 ES ES92921087T patent/ES2082510T3/en not_active Expired - Lifetime
- 1992-10-16 MX MX9205952A patent/MX9205952A/en not_active IP Right Cessation
- 1992-10-17 CN CN92112841A patent/CN1039102C/en not_active Expired - Fee Related
- 1992-11-02 TW TW081108706A patent/TW207968B/zh not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9307974A1 * |
Also Published As
Publication number | Publication date |
---|---|
MX9205952A (en) | 1993-06-01 |
WO1993007974A1 (en) | 1993-04-29 |
KR100187334B1 (en) | 1999-04-01 |
ES2082510T3 (en) | 1996-03-16 |
EP0608286B1 (en) | 1995-12-20 |
CN1039102C (en) | 1998-07-15 |
TW207968B (en) | 1993-06-21 |
CN1072620A (en) | 1993-06-02 |
CA2121341A1 (en) | 1993-04-29 |
ATE131754T1 (en) | 1996-01-15 |
CA2121341C (en) | 2004-04-27 |
DE4134599C1 (en) | 1993-02-25 |
US5694799A (en) | 1997-12-09 |
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