WO1993008939A1 - Moisture removal from metal strip - Google Patents
Moisture removal from metal strip Download PDFInfo
- Publication number
- WO1993008939A1 WO1993008939A1 PCT/GB1992/001975 GB9201975W WO9308939A1 WO 1993008939 A1 WO1993008939 A1 WO 1993008939A1 GB 9201975 W GB9201975 W GB 9201975W WO 9308939 A1 WO9308939 A1 WO 9308939A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- strip
- housing
- moisture
- air
- edge
- Prior art date
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 11
- 239000002184 metal Substances 0.000 title claims abstract description 11
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 239000002826 coolant Substances 0.000 description 11
- 238000005096 rolling process Methods 0.000 description 7
- 239000004411 aluminium Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 239000011324 bead Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000010186 staining Methods 0.000 description 4
- 239000003595 mist Substances 0.000 description 2
- 239000012634 fragment Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
- F26B13/007—Treating a particular portion of the web or plate, e.g. the edge
-
- 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
- B21B45/0269—Cleaning
- B21B45/0275—Cleaning devices
- B21B45/0278—Cleaning devices removing liquids
- B21B45/0281—Cleaning devices removing liquids removing coolants
Definitions
- This invention relates to apparatus for removing moisture from ar- edge region of metal strip that is moving in the direction of its length.
- the apparatus is for removing moisture from an edge region of aluminium strip.
- the final rolling stages of aluminium strip consist of rolling the strip through a number of rolling mill stands, sometimes arranged in tandem, so that the strip leaving tb-e last stand is of the required gauge.
- This strip is then coiled for subsequent use.
- the rolls of the mill stands are cooled by having liquid coolant applied to them on the entry side. It has been the practice to employ kerosene as the liquid coolant. However, for various reasons, it would be preferable to use water as the liquid coolant, but it is absolutely vital to keep water off the strip on tb-e exit side of the mill when it is coiled because water left on the surface of the coiled strip dries and causes considerable staining of the strip rendering it unacceptable to many potential users.
- Steps may be taken to remove any moisture remaining on the upper and lower surfaces of the strip downstream of the last stand to avoid staining of the aluminium strip.
- a thin layer of moisture to remain on the longitudinally extending edge regions of the metal strip and particularly moisture taking the form of a bead which attaches itself to the extreme edge of the strip.
- the strip is coiled the moisture on the edge region of the strip, particularly the bead of moisture on the edge region, seeps back into the coil between adjacent turns and, as it dries, it stains the aluminium.
- staining of the edges is not acceptable.
- apparatus for removing moisture from an edge region of metal strip moving in the direction of its length comprises a hollow housing having a slot in an outer wall thereof; means for supporting the housing relative to the path taken by the strip so as to permit the edge region of the moving strip to project into the slot and be in communication with the interior of the housing; nozzle assemblies in the housing by which air under pressure is directed on to the upper and lower surfaces of the edge region of the strip in the slot, the air being directed towards the edge of the strip so as to remove any moisture present on the strip; and means for extracting air and moisture from the housing.
- the jets of air leaving the nozzle assemblies wipe across the longitudinally extending edge regions of the upper and lower surfaces of the strip displacing the moisture therefrom in the form of droplets and particularly removing the bead of moisture which may be present on the edge of the strip. This bead is smashed by the turbulent air and is taken with the air into the hollow housing in the form of a mist from where it is extracted.
- such apparatus is provided for removing moisture from both longitudinally extending edge regions of the metal strip.
- the housing is so mounted that it can be moved in a direction parallel to the width dimension of the strip so that the apparatus can be used with strips of different widths.
- Detector means may be provided in the housing to detect the position of the edge of the strip and control means are employed to automatically displace the housing towards and away from the edge of the strip so that the edge remains at a desired position relative to the nozzle assemblies which are in the housing.
- Figure 1 is a side elevation, partly in section, of a rolling mill stand showing apparatus in accordance with the present invention.
- Figure 2 is an end elevation of the apparatus shown in Figure 1.
- a rolling mill for rolling metal strip, particularly aluminium strip has a pair of work rolls 1, 3.
- a number of rolling mill stands may be arranged in tandem and, downstream of the last stand, there is provided apparatus in accordance with the present invention for removing moisture from one of the longitudinally extending edge regions of the metal strip S.
- coolant water is applied to the rolls 1, 3 on the entry side of the mill, usually steps are taken to contain the coolant in contact with particular peripheral portions of the rolls on the entry side of the mill and steps may also be taken to prevent liquid coolant from coming into contact with the strip material on the downstream side of the last stand to prevent staining of the strip material as the liquid coolant dries. It has been found, however, that, in practice, moisture tends to collect on the extreme longitudinally extending edge regions 5 of the strip S, particularly, a bead of moisture may be formed on the edge of the strip. Apparatus for removing the moisture is provided adjacent both of the longitudinally extending edge regions of the metal strip, although only one such apparatus is shown in Figures 1 and 2.
- the apparatus comprises a hollow housing 7 having a slot 9 formed in the outside wall of the housing which permits the longitudinally extending region 5 of the strip to project into the slot.
- the slot is in communication with the interior of the housing.
- the housing is mounted on a slider 11 which is driven by an electric motor 13 in such a manner that the housing can be moved towards and away from the strip S in the direction of its widthwise dimension.
- a position detector comprising a transmitter 15 and a receiver 17 are mounted in the housing on opposite sides of the slot and they serve to detect the edge of the strip material when it is present in the slot. Signals from the detector are employed by means not shown to drive the motor 13 to move the housing so that the edge of the strip always takes the same relative position in the slot 9.
- nozzles 19, 21 which are supplied with gas, usually air, under pressure.
- the nozzles are directed so that the gas issuing from them impinges on the upper and lower surfaces of the strip material, respectively, and they are inclined to the respective surfaces of the strip and directed towards the edge of the strip.
- the angle at which the air jet impinges against one surface is substantially at right angles to the angle at which the air jet impinges against the other surface. In this way, air issuing from the nozzles impinges on the surfaces of the strip as it passes through the housing and converts any moisture which is on the edge region of the strip into droplets which are carried by the air stream.
- the air flowing over the surfaces of the strip meets at the edge of the strip and fragments any bead of moisture which has attached itsIf thereto.
- all moisture present on the longitudinally extending edge region of the strip is converted into droplets by the air jets and removed into the hollow housing.
- the air containing the droplets of moisture is in the form of a mist and is exhausted from the housing through an exhaust pipe 23 by means of a suction generating device (not shown) .
- a suction generating device not shown
- the interior of the housing 7 may include a device for analysing the moisture content in the housing since this is indicative of the quanlity of the seals between the box structures and the rolls. An increase in moisture content could indicate that one or other of the seals is breaking down.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69210835T DE69210835T2 (en) | 1991-11-01 | 1992-10-28 | REMOVAL OF MOISTURE FROM A METAL STRIP |
US08/182,133 US5440779A (en) | 1991-11-01 | 1992-10-28 | Moisture removal from metal strip |
EP92922129A EP0610300B1 (en) | 1991-11-01 | 1992-10-28 | Moisture removal from metal strip |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9123244.7 | 1991-11-01 | ||
GB919123244A GB9123244D0 (en) | 1991-11-01 | 1991-11-01 | Moisture removal from metal strip |
GB9123398.1 | 1991-11-04 | ||
GB919123398A GB9123398D0 (en) | 1991-11-04 | 1991-11-04 | Moisture removal from metal strip |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993008939A1 true WO1993008939A1 (en) | 1993-05-13 |
Family
ID=26299787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1992/001975 WO1993008939A1 (en) | 1991-11-01 | 1992-10-28 | Moisture removal from metal strip |
Country Status (4)
Country | Link |
---|---|
US (1) | US5440779A (en) |
EP (1) | EP0610300B1 (en) |
DE (1) | DE69210835T2 (en) |
WO (1) | WO1993008939A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997003331A1 (en) * | 1995-07-13 | 1997-01-30 | Babcock Textilmaschinen Gmbh | Continuous textile web drier |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19717456A1 (en) * | 1997-04-25 | 1998-10-29 | Schloemann Siemag Ag | Band blowing device |
WO2008027900A2 (en) | 2006-08-28 | 2008-03-06 | Air Products And Chemicals, Inc. | Spray device for spraying cryogenic liquid and spraying method associated to this device |
JP5801909B2 (en) | 2011-03-18 | 2015-10-28 | ノベリス・インコーポレイテッドNovelis Inc. | Method and apparatus for removing coolant from a moving strip of metal |
DE102021209265A1 (en) | 2021-08-24 | 2023-03-02 | Sms Group Gmbh | Nozzle device and method for its manufacture |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1918207A (en) * | 1932-12-23 | 1933-07-11 | Stanley Works | Method of and apparatus for removing lubricant from cold rolled strip metal |
US3192752A (en) * | 1963-06-27 | 1965-07-06 | Aluminum Co Of America | Cold rolling aluminum and product |
GB2111885A (en) * | 1981-12-24 | 1983-07-13 | Wean United Inc | Removing liquid from strip in a rolling mill |
US4400961A (en) * | 1981-07-15 | 1983-08-30 | Schaming Edward J | Apparatus for removing liquid coolant from metal strips in a rolling mill |
US4601112A (en) * | 1985-06-14 | 1986-07-22 | Kaiser Aluminum & Chemical Corporation | Liquid edgebead removal device |
FR2602700A1 (en) * | 1986-08-14 | 1988-02-19 | Bertin & Cie | Method and device for protecting a strip emerging from a rolling mill, particularly against splashes of rolling liquid |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3601837A (en) * | 1969-08-28 | 1971-08-31 | Archer Products Inc | Apparatus for cleaning the edges of strip material by the application of fluid under pressure |
US3849831A (en) * | 1972-12-20 | 1974-11-26 | Dee Electric Co | Air dryer equipment |
US4395793A (en) * | 1982-02-18 | 1983-08-02 | Pako Corporation | Photographic film cleaner |
-
1992
- 1992-10-28 EP EP92922129A patent/EP0610300B1/en not_active Expired - Lifetime
- 1992-10-28 DE DE69210835T patent/DE69210835T2/en not_active Expired - Lifetime
- 1992-10-28 US US08/182,133 patent/US5440779A/en not_active Expired - Lifetime
- 1992-10-28 WO PCT/GB1992/001975 patent/WO1993008939A1/en active IP Right Grant
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1918207A (en) * | 1932-12-23 | 1933-07-11 | Stanley Works | Method of and apparatus for removing lubricant from cold rolled strip metal |
US3192752A (en) * | 1963-06-27 | 1965-07-06 | Aluminum Co Of America | Cold rolling aluminum and product |
US4400961A (en) * | 1981-07-15 | 1983-08-30 | Schaming Edward J | Apparatus for removing liquid coolant from metal strips in a rolling mill |
GB2111885A (en) * | 1981-12-24 | 1983-07-13 | Wean United Inc | Removing liquid from strip in a rolling mill |
US4601112A (en) * | 1985-06-14 | 1986-07-22 | Kaiser Aluminum & Chemical Corporation | Liquid edgebead removal device |
FR2602700A1 (en) * | 1986-08-14 | 1988-02-19 | Bertin & Cie | Method and device for protecting a strip emerging from a rolling mill, particularly against splashes of rolling liquid |
Non-Patent Citations (1)
Title |
---|
RESEARCH DISCLOSURE no. 243, July 1984, HAVANT GB page 339 DISCLOSED ANONYMOUSLY 24325 'Split Lubrication for Rolling Mills' * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997003331A1 (en) * | 1995-07-13 | 1997-01-30 | Babcock Textilmaschinen Gmbh | Continuous textile web drier |
Also Published As
Publication number | Publication date |
---|---|
DE69210835T2 (en) | 1996-09-26 |
EP0610300A1 (en) | 1994-08-17 |
DE69210835D1 (en) | 1996-06-20 |
EP0610300B1 (en) | 1996-05-15 |
US5440779A (en) | 1995-08-15 |
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