EP2389260A2 - Verfahren und vorrichtung zum glühen und entzundern von band aus nichtrostendem stahl - Google Patents
Verfahren und vorrichtung zum glühen und entzundern von band aus nichtrostendem stahlInfo
- Publication number
- EP2389260A2 EP2389260A2 EP09837223A EP09837223A EP2389260A2 EP 2389260 A2 EP2389260 A2 EP 2389260A2 EP 09837223 A EP09837223 A EP 09837223A EP 09837223 A EP09837223 A EP 09837223A EP 2389260 A2 EP2389260 A2 EP 2389260A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- descaling
- annealing
- strip
- steel strip
- plasma
- 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
- 238000000137 annealing Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 28
- 229910001220 stainless steel Inorganic materials 0.000 title claims description 20
- 239000010935 stainless steel Substances 0.000 title description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 37
- 239000010959 steel Substances 0.000 claims abstract description 37
- 238000001816 cooling Methods 0.000 claims abstract description 26
- 229910000963 austenitic stainless steel Inorganic materials 0.000 claims abstract description 5
- 238000005422 blasting Methods 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000007774 longterm Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000010960 cold rolled steel Substances 0.000 claims 1
- 230000005672 electromagnetic field Effects 0.000 claims 1
- 238000005096 rolling process Methods 0.000 claims 1
- 238000005097 cold rolling Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 6
- 238000005554 pickling Methods 0.000 description 5
- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 235000013980 iron oxide Nutrition 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B21B45/04—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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/573—Continuous furnaces for strip or wire with cooling
-
- 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
Definitions
- the invention relates to a method for annealing and descaling hot-rolled or cold-rolled strip of stainless steel.
- the steel strip For further processing of both hot rolled and cold rolled stainless steel strip, e.g. B. by cold rolling in the hot strip and for the production of the final products in the cold strip, the steel strip must be annealed and have a scale-free surface. Therefore, the scale formed during hot rolling or annealing must be completely removed.
- the annealing and descaling of stainless steel strip except ferritic hot strip is done in the known methods in-line in combined annealing and pickling lines.
- the annealing of hot-rolled strip or cold-rolled austenitic stainless steel as well as of cold-rolled ferritic stainless steel takes place in a horizontal continuous furnace followed by a cooling zone for cooling the strip to temperatures below 100 0 C.
- Hot-rolled strip made of ferritic stainless steel is subject to metallurgical reasons outside the annealing and pickling line as a bundle of long-term bonnet annealing with subsequent air cooling by the federal government.
- the descaling of this material is usually carried out in the above-mentioned combined annealing and pickling lines, whereby only the descaling is required because of the already performed annealing, or in special pickling lines without annealing furnace.
- the strip is first mechanically descaled by blasting with steel grain and brushing, whereby a large part of the scale is removed. Thereafter, it is pickled electrolytically and then chemically by means of various acids at elevated temperatures, the remaining scale being completely removed becomes.
- a mechanical descaling is not necessary because of the much thinner scale layer, and thus the roughness is increased too much.
- the z. Z. used methods are very complicated because the scale layer is relatively thick in the hot strip and the chromium-rich iron oxides are difficult to dissolve and therefore difficult to remove. In addition, a great deal of effort is required for the disposal of used acids, wastewater and toxic gases produced during pickling.
- the product to be descaled is running
- Descaling is carried out by the plasma located between the electrodes and the steel strip, with a metallically clean after completion of the descaling process
- Ribbon surface is present.
- the steel strip After the plasma descaling, the steel strip is cooled in a vacuum by means of cooling rollers in order to prevent the band heating resulting from the plasma descaling from exiting the strip
- the object of the invention is to improve this plasma descaling for use with stainless steel strip.
- the plasma technology represents, in particular for stainless steel strip, an environmentally friendly, qualitatively perfect and economic descaling technology.
- the cooled hot-rolled strip can be used in a combined annealing and descaling line or cold rolled stainless steel strip alone with the plasma technology completely descaled.
- a variant of austenitic and ferritic stainless steel strip is the combination of pre-descaling by blasting with steel grain followed by plasma descaling, which greatly reduces the process time required for plasma descaling.
- a device for annealing and descaling of stainless steel strip is shown schematically.
- the steel strip 1 is unwound from a discharge reel 11. With the welding machine 12, the band ends of the following bundles are welded together. Thereafter, the tape passes through a tape storage 13, from there via a S-roll stand 14 for generating the strip tension, of this by the horizontal annealing furnace 2, in which it is briefly annealed at temperatures up to 1200 'C. After annealing, the steel strip 1 passes through the cooling zone 3, where it is cooled with air or air and water spray to temperatures below 100 0 C. Thereafter, the steel strip 1 runs in the transport direction R about the guide roller 15 and over the S-roller stand 16 by the stretch bending device 4 for producing a flat strip. From there it passes through the steel grain blasting device 5. This can be used to pre-descaling hot rolled stainless steel strip 1. The Stahlkom-blasting device 5 is not required with correspondingly more powerful design of the following plasma descaling system 6.
- the steel hand 1 then passes through a further S-roll stand 17, which is required to produce the strip tension, through a multi-stage vacuum lock 7 into the process chamber 8 of the plasma descaling unit 6, in which the plasma descaling takes place.
- electrodes 9 for generating the plasma are arranged over the entire bandwidth at a predetermined distance from the band.
- the plasma descaling system 6 shown schematically here has 2 Process chambers 8. Depending on the performance of the system, the number and length of the process chambers 8 may be different. Between the process chambers, a cooling zone is arranged with adjustable cooling rollers 10 for belt cooling, which are also in a vacuum.
- the steel strip is preferably cooled with the cooling rollers 10 to a temperature below 100 0 C and then passes through the second process chamber 8, in which also above and below the steel strip 1 electrodes for generating the plasma are arranged. In this process chamber, the complete removal of the remaining scale on both sides of the steel strip takes place. Thereafter, the descaled steel strip passes through the second cooling zone with 3 cooling rollers 10, in which it is cooled to a temperature below 100 0 C. From there it runs through the multi-stage vacuum lock 7 and then enters the air atmosphere.
- the steel belt 1 runs to the take-up reel 20, where it is wound up into the finished collar 21.
- the described method and apparatus for annealing and descaling stainless steel strip provides an economically and environmentally very advantageous technology for producing high quality stainless steel strip which meets the requirements of the market.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Cleaning In General (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009005797 | 2009-01-22 | ||
DE102009017701A DE102009017701A1 (de) | 2009-01-22 | 2009-04-15 | Verfahren und Vorrichtung zum Glühen und Entzundern von Band aus nichtrostendem Stahl |
PCT/DE2009/001832 WO2010083797A2 (de) | 2009-01-22 | 2009-12-22 | Verfahren und vorrichtung zum glühen und entzundern von band aus nichtrostendem stahl |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2389260A2 true EP2389260A2 (de) | 2011-11-30 |
EP2389260B1 EP2389260B1 (de) | 2016-11-16 |
Family
ID=42282716
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09837223.8A Not-in-force EP2389260B1 (de) | 2009-01-22 | 2009-12-22 | Verfahren und vorrichtung zum glühen und entzundern von band aus nichtrostendem stahl |
Country Status (15)
Country | Link |
---|---|
US (1) | US20110315280A1 (de) |
EP (1) | EP2389260B1 (de) |
JP (1) | JP2012515843A (de) |
KR (1) | KR20110103459A (de) |
CN (1) | CN102292172A (de) |
AU (1) | AU2009337991A1 (de) |
BR (1) | BRPI0924152A2 (de) |
CA (1) | CA2749962A1 (de) |
DE (1) | DE102009017701A1 (de) |
MX (1) | MX2011007710A (de) |
RS (1) | RS20110328A1 (de) |
RU (1) | RU2011134838A (de) |
TW (1) | TW201037084A (de) |
WO (1) | WO2010083797A2 (de) |
ZA (1) | ZA201105222B (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014021639A1 (ko) * | 2012-07-31 | 2014-02-06 | 주식회사 포스코 | 오스테나이트계 스테인리스 냉연강판을 제조하기 위한 고속 산세 프로세스 |
CN103320589B (zh) * | 2013-06-11 | 2014-11-05 | 鞍钢股份有限公司 | 一种防止高镍钢坯加热过程氧化的方法 |
CN113846291A (zh) * | 2020-06-28 | 2021-12-28 | 宝山钢铁股份有限公司 | 一种镀锌钢板/卷的清洗涂镀联合机组及其生产方法 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5565317A (en) * | 1978-11-06 | 1980-05-16 | Nippon Steel Corp | Manufacture of stainless steel excellent in intergranular corrosion resistance and surface cleanness |
JPH06212382A (ja) * | 1993-01-14 | 1994-08-02 | Nippon Steel Corp | 高張力鋼板の溶融金属めっき方法 |
JPH07132316A (ja) * | 1993-11-10 | 1995-05-23 | Kawasaki Steel Corp | 金属帯板の連続脱スケール方法 |
JPH07144212A (ja) * | 1993-11-25 | 1995-06-06 | Nippon Steel Corp | 金属の表面処理装置列 |
JP3695063B2 (ja) * | 1997-05-28 | 2005-09-14 | 住友金属工業株式会社 | クラッド材用ステンレス鋼帯の製造方法 |
RU2145912C1 (ru) | 1998-09-08 | 2000-02-27 | Сенокосов Евгений Степанович | Способ обработки поверхности металлической полосы и устройство для его реализации |
AU3085300A (en) | 1999-03-23 | 2000-10-09 | Viktor Ivanovich Dikarev | Method for the vacuum arc-processing of a metallic wire (cable, strip), device for realising the same and variants |
JP3756833B2 (ja) * | 2002-03-14 | 2006-03-15 | 新日鐵住金ステンレス株式会社 | ブラウン管インナーフレームと、そのためのフェライト系ステンレス鋼板と、その製造方法 |
JP2006205085A (ja) * | 2005-01-28 | 2006-08-10 | Ngk Insulators Ltd | プラズマ処理装置 |
DE102005012296A1 (de) * | 2005-03-17 | 2006-09-21 | Sms Demag Ag | Verfahren und Vorrichtung zum Entzundern eines Metallbandes |
JP4813123B2 (ja) * | 2005-08-10 | 2011-11-09 | 新日鐵住金ステンレス株式会社 | 表面品質に優れたオーステナイト系ステンレス鋼板の製造方法 |
CN100415448C (zh) * | 2006-07-14 | 2008-09-03 | 山西太钢不锈钢股份有限公司 | 清除不锈钢表面铁鳞的方法 |
-
2009
- 2009-04-15 DE DE102009017701A patent/DE102009017701A1/de not_active Withdrawn
- 2009-12-12 US US13/145,749 patent/US20110315280A1/en not_active Abandoned
- 2009-12-22 WO PCT/DE2009/001832 patent/WO2010083797A2/de active Application Filing
- 2009-12-22 RS RS20110328A patent/RS20110328A1/en unknown
- 2009-12-22 JP JP2011546584A patent/JP2012515843A/ja active Pending
- 2009-12-22 KR KR1020117018474A patent/KR20110103459A/ko not_active Application Discontinuation
- 2009-12-22 MX MX2011007710A patent/MX2011007710A/es not_active Application Discontinuation
- 2009-12-22 EP EP09837223.8A patent/EP2389260B1/de not_active Not-in-force
- 2009-12-22 CN CN200980155123XA patent/CN102292172A/zh active Pending
- 2009-12-22 CA CA2749962A patent/CA2749962A1/en not_active Abandoned
- 2009-12-22 AU AU2009337991A patent/AU2009337991A1/en not_active Abandoned
- 2009-12-22 RU RU2011134838/02A patent/RU2011134838A/ru not_active Application Discontinuation
- 2009-12-22 BR BRPI0924152A patent/BRPI0924152A2/pt not_active IP Right Cessation
-
2010
- 2010-01-12 TW TW099100691A patent/TW201037084A/zh unknown
-
2011
- 2011-07-14 ZA ZA2011/05222A patent/ZA201105222B/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2010083797A2 * |
Also Published As
Publication number | Publication date |
---|---|
ZA201105222B (en) | 2012-03-28 |
US20110315280A1 (en) | 2011-12-29 |
TW201037084A (en) | 2010-10-16 |
AU2009337991A1 (en) | 2011-08-18 |
EP2389260B1 (de) | 2016-11-16 |
KR20110103459A (ko) | 2011-09-20 |
WO2010083797A3 (de) | 2010-12-09 |
CA2749962A1 (en) | 2010-07-29 |
DE102009017701A1 (de) | 2010-07-29 |
BRPI0924152A2 (pt) | 2016-02-10 |
WO2010083797A2 (de) | 2010-07-29 |
CN102292172A (zh) | 2011-12-21 |
RS20110328A1 (en) | 2012-08-31 |
MX2011007710A (es) | 2011-09-27 |
JP2012515843A (ja) | 2012-07-12 |
RU2011134838A (ru) | 2013-02-27 |
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