WO1998047634A1 - Process and apparatus for cleaning metal strip - Google Patents
Process and apparatus for cleaning metal strip Download PDFInfo
- Publication number
- WO1998047634A1 WO1998047634A1 PCT/US1998/007792 US9807792W WO9847634A1 WO 1998047634 A1 WO1998047634 A1 WO 1998047634A1 US 9807792 W US9807792 W US 9807792W WO 9847634 A1 WO9847634 A1 WO 9847634A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- strip
- ground
- remove
- grinding
- postprocessing
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000002184 metal Substances 0.000 title claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 10
- 238000004140 cleaning Methods 0.000 title claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000012805 post-processing Methods 0.000 claims abstract description 9
- 239000002253 acid Substances 0.000 claims abstract description 8
- 230000001464 adherent effect Effects 0.000 claims description 2
- 150000007513 acids Chemical class 0.000 abstract description 2
- 238000005554 pickling Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/041—Cleaning travelling work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/20—Cleaning of moving articles, e.g. of moving webs or of objects on a conveyor
-
- 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
- B21B45/06—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 of strip material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
- B21B2001/383—Cladded or coated products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
- B21B2015/0021—Cutting or shearing the product in the rolling direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0071—Levelling the rolled product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
-
- 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
Definitions
- This invention relates to the cleaning of metal strip, particularly but not limited to stainless steel strip, whereby adherent oxides are mechanically removed from the surface of the strip without the use of pickling acids.
- the present invention provides a metal strip uncoiling device followed by a device capable of flattening the strip and delivering a shape that is acceptable to the following grinding step.
- the grinding step is followed by a tensioning device to enhance material handling and control.
- the single Figure is a schematic drawing in side elevation of a processing line in accordance with the invention, showing the levelling, grinding and (optional) tensioning devices.
- the Figure shows an uncoiler 1, a strip leveller 2, a grinder 3 and a tensioning device 4, as well an optional surface conditioning device 5 and material post-processing apparatus 6, and a strip recoiler 7.
- the essential steps of the invention, levelling and surface grinding, comprise a process and apparatus capable of removing oxides from metal strip efficiently and in a form possessing an acceptable surface finish for post-processing.
- the disposition of a tensioning device following the grinder enhances material handing and control.
- an acid bath and rinse section in the processing line to remove the ground surface material and to condition the surface to a more preferred condition.
- Such acid bath and rinse section may be replaced with a rolling device to roll the material in order to further enhance the surface of the strip.
- the strip material may only need to be oiled and recoiled after grinding and mechanical polishing.
- a number of other post-processing steps may be utilized between grinding and recoiling, such as, but not limited to, side trimming, shot-blasting, painting, galvanizing and other coating operations.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
A process and apparatus for cleaning metal strip without the use of pickling acids, including an uncoiler (1) leveller (2) and a grinder (3) for removing surface oxide from the strip. Optionally, tension is applied to the ground strip to enhance material handling and control. The ground strip may be treated with acid to remove ground surface material and to condition the strip. Such strip is suitable for many post-processing operations.
Description
PROCESS AND APPARATUS FOR CLEANING METAL STRIP
BACKGROUND
1. Field of the Invention
This invention relates to the cleaning of metal strip, particularly but not limited to stainless steel strip, whereby adherent oxides are mechanically removed from the surface of the strip without the use of pickling acids.
2. Description of the Prior Art
Mechanical scale removal, e.g. by grinding the surface of metal strip with abrasives is known to the art. However such prior art processes are effective only on metals that are flat and well controlled during the grinding process. The surface finish produced by such processes may not be acceptable for uses including post-processing of the surface ground product.
SUMMARY OF THE INVENTION
The present invention provides a metal strip uncoiling device followed by a device capable of flattening the strip and delivering a shape that is acceptable to the following grinding step. Preferably, the grinding step is followed by a tensioning device to enhance material handling and control.
BRIEF DESCRIPTION OF THE DRAWING
The single Figure is a schematic drawing in side elevation of a processing line in accordance with the invention, showing the levelling, grinding and (optional) tensioning devices. DESCRIPTION OF PREFERRED EMBODIMENTS
The Figure shows an uncoiler 1, a strip leveller 2, a grinder 3 and a tensioning device 4, as well an optional surface
conditioning device 5 and material post-processing apparatus 6, and a strip recoiler 7.
The essential steps of the invention, levelling and surface grinding, comprise a process and apparatus capable of removing oxides from metal strip efficiently and in a form possessing an acceptable surface finish for post-processing. As above noted, the disposition of a tensioning device following the grinder enhances material handing and control.
After grinding, there may be an acid bath and rinse section in the processing line to remove the ground surface material and to condition the surface to a more preferred condition. Such acid bath and rinse section may be replaced with a rolling device to roll the material in order to further enhance the surface of the strip. In some applications, the strip material may only need to be oiled and recoiled after grinding and mechanical polishing.
A number of other post-processing steps may be utilized between grinding and recoiling, such as, but not limited to, side trimming, shot-blasting, painting, galvanizing and other coating operations.
Claims
1. A method of removing oxide scale from metal strip, comprising providing an elongated section of wound strip, uncoiling the wound strip, directing the unwound strip into a leveller and levelling the strip, mechanically grinding the strip surface to remove adherent surface oxides, and recoiling the ground strip.
2. A method according to claim 1, further comprising applying tension to the ground strip.
3. A method according to claim 1, further comprising passing the ground strip through an acid bath and rinse to remove ground surface material and to condition the strip surface.
4. A method according to claim 2, further comprising passing the ground strip through an acid bath and rinse to remove ground surface material and to condition the strip surface.
5. A method according to claim 1, further comprising postprocessing the strip.
6. A method according to claim 2, further comprising postprocessing the strip.
7. A method according to claim 3, further comprising postprocessing the strip.
3. A method according to claim 4, further comprising postprocessing the strip.
9. An apparatus for cleaning metal strip, comprising an uncoiler on which the strip may be wound, a strip leveller, and a device for grinding the surface of the strip to remove surface oxides therefrom.
10. An apparatus according to claim 9, further comprising a tensioning device disposed after the grinding device.
11. An apparatus according to claim 9, further comprising an acid bath and rinse apparatus disposed after the grinding device to remove ground surface material and condition the strip.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US84249497A | 1997-04-24 | 1997-04-24 | |
| US08/842,494 | 1997-04-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1998047634A1 true WO1998047634A1 (en) | 1998-10-29 |
Family
ID=25287454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1998/007792 WO1998047634A1 (en) | 1997-04-24 | 1998-04-21 | Process and apparatus for cleaning metal strip |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO1998047634A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1005926A2 (en) * | 1998-11-30 | 2000-06-07 | Danieli Wean, a division of Danieli Corporation | Process and apparatus for cleaning metal strip |
| EP1022069A2 (en) * | 1999-01-21 | 2000-07-26 | Armco Inc. | Method for manufacturing cold rolled metal strip having improved surface roughness |
| CN109174795A (en) * | 2018-10-25 | 2019-01-11 | 浙江星康铜业有限公司 | A kind of surface cleaning apparatus and cleaning method for copper strips production |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2133231A (en) * | 1936-10-19 | 1938-10-11 | Nathan H Schermer | Method of pickling metal |
| US2759301A (en) * | 1953-07-16 | 1956-08-21 | Crucible Steel Co America | Method and apparatus for surface grinding metal strip |
-
1998
- 1998-04-21 WO PCT/US1998/007792 patent/WO1998047634A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2133231A (en) * | 1936-10-19 | 1938-10-11 | Nathan H Schermer | Method of pickling metal |
| US2759301A (en) * | 1953-07-16 | 1956-08-21 | Crucible Steel Co America | Method and apparatus for surface grinding metal strip |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1005926A2 (en) * | 1998-11-30 | 2000-06-07 | Danieli Wean, a division of Danieli Corporation | Process and apparatus for cleaning metal strip |
| EP1005926A3 (en) * | 1998-11-30 | 2002-07-24 | Danieli Wean, a division of Danieli Corporation | Process and apparatus for cleaning metal strip |
| EP1022069A2 (en) * | 1999-01-21 | 2000-07-26 | Armco Inc. | Method for manufacturing cold rolled metal strip having improved surface roughness |
| EP1022069A3 (en) * | 1999-01-21 | 2003-01-02 | Armco Inc. | Method for manufacturing cold rolled metal strip having improved surface roughness |
| CN109174795A (en) * | 2018-10-25 | 2019-01-11 | 浙江星康铜业有限公司 | A kind of surface cleaning apparatus and cleaning method for copper strips production |
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