EP1256400A1 - Procédé de retardement de la formation de dépôts dans le canaux de refroidissement de lingotières de coulée continue - Google Patents
Procédé de retardement de la formation de dépôts dans le canaux de refroidissement de lingotières de coulée continue Download PDFInfo
- Publication number
- EP1256400A1 EP1256400A1 EP02009092A EP02009092A EP1256400A1 EP 1256400 A1 EP1256400 A1 EP 1256400A1 EP 02009092 A EP02009092 A EP 02009092A EP 02009092 A EP02009092 A EP 02009092A EP 1256400 A1 EP1256400 A1 EP 1256400A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- heat exchange
- exchange surfaces
- mold
- continuous casting
- 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.)
- Ceased
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 13
- 238000009749 continuous casting Methods 0.000 title claims abstract description 12
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims description 30
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000011248 coating agent Substances 0.000 claims abstract description 7
- 238000000576 coating method Methods 0.000 claims abstract description 7
- 230000010355 oscillation Effects 0.000 claims abstract description 4
- 238000012546 transfer Methods 0.000 claims description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- 238000007747 plating Methods 0.000 claims description 6
- 240000002853 Nelumbo nucifera Species 0.000 claims description 5
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims description 5
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 238000005229 chemical vapour deposition Methods 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 239000004215 Carbon black (E152) Substances 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims description 2
- 229930195733 hydrocarbon Natural products 0.000 claims description 2
- 150000002430 hydrocarbons Chemical class 0.000 claims description 2
- 150000007524 organic acids Chemical class 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 238000005488 sandblasting Methods 0.000 claims description 2
- 238000005480 shot peening Methods 0.000 claims description 2
- 238000003754 machining Methods 0.000 claims 2
- 238000009499 grossing Methods 0.000 claims 1
- 230000002401 inhibitory effect Effects 0.000 claims 1
- 239000000155 melt Substances 0.000 claims 1
- 238000004381 surface treatment Methods 0.000 claims 1
- 239000013078 crystal Substances 0.000 description 15
- 230000006698 induction Effects 0.000 description 9
- 238000000151 deposition Methods 0.000 description 4
- 230000003993 interaction Effects 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000003373 anti-fouling effect Effects 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000012993 chemical processing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/055—Cooling the moulds
Definitions
- the invention relates to a method for delaying the formation of deposits on heat exchange surfaces in continuous casting molds.
- cooling water quality If the cooling water quality is complied with, the usual requirements are in normal operation more or less sufficient to prevent fouling. But because ensuring water quality is mostly a responsibility the plant operator is located, one tries to specify operational measures, in order to prevent the formation of deposits even in less favorable cooling water conditions or at least significantly delay it.
- induction phase precedes the actual fouling process and is by adhering the first crystals to the heat transfer surface and their Combined to form a compact fouling layer.
- the fouling layer begins to grow, which increases with increasing associated with the mold temperature.
- the duration of the induction phase depends on Material and the structure of the cooling channel surface. The criteria of the unwanted Formation of fouling layers due to crystalline deposits basically known.
- Influencing the flow guidance Another measure to intervene to reduce fouling is targeted Influencing the flow guidance.
- Other methods such as for example, the pulsating flow control can be used successfully. Becomes an oscillation is superimposed on the flow with an increase in speed over time, so the balance of forces between deposition and removal forces shifts in favor of an increased removal rate.
- the publication describes the accumulation of undesirable crystal deposits (Fouling), which reduces the effectiveness of heat exchangers.
- fouling undesirable crystal deposits
- there a model is developed to describe the entire fouling process, because the main disadvantage of known models is the lack of a description the induction period or its influence by a core reaction rate and the adhesive forces between crystals and heat transfer surfaces.
- the deposition and removal process of crystal deposits depends on the free interface energy crystal / heat transfer surface. For a number industrial applications the only way is to use the free interfacial energy to influence the characteristics of the surface energy too modify, namely on the heat transfer surface.
- the first fouling-weakening strategy is based on the modification of energy and geometry with regard to the characteristics of heat transfer surfaces, with the aim of to realize extended duration of the induction period.
- DSA drop Shape Analysis
- the second fouling-weakening strategy is based on the overlaying of stationary ones Liquid streams. Such relapses shift the balance of power is supposed to provide an improved cleaning process.
- Have fouling experiments show that flow pulsation is a successful instrument to build up fouling deposits on heat transfer surfaces weaknesses.
- Document DE 198 52 473 C1 describes a mold plate of a mold Copper in a continuous caster.
- the mold plate has one in operation Continuous casting plant facing the molten metal or a partially solidified metal strand Work surface and at least one in the operation of the continuous caster Cooling surface contacting cooling medium.
- On the cooling surface of the mold plate applied a layer with a thermal conductivity at least in a partial area, which is smaller than the plate thermal conductivity of the mold plate.
- the object of the invention is based on a method for delaying the formation of deposits on heat exchange surfaces in continuous casting molds and thus the service life of the mold plates to extend and improve the profitability of the foundry.
- the so-called induction phase extended. Because this phase is the actual fouling process preceded by a merger of the first crystal attachments on the heat transfer surface and growing together to form a flat fouling layer much more difficult, which has a positive effect on the service life of the mold plates affects and significantly improves the profitability of the foundry.
- An embodiment of the method provides that it can be combined is carried out by at least two of the aforementioned measures. With the interaction is at least two of the measures according to the invention not only summed up their effectiveness, but through mutual interaction further strengthened and thus the operational effectiveness on the overall system clearly improved.
- One embodiment of the invention provides, for example, that processing the Heat exchanger surfaces on the exposed cooling channels of a mold plate removed water box is made. With this measure Processing problems of closed heat exchange channels advantageous avoided and thus the corresponding processing costs significantly reduced.
- the heat exchange surfaces can then be machined according to one of the Processing types such as lapping, drawing grinding or rolling are carried out. According to a further embodiment of the invention, the processing can also by sandblasting or shot peening.
- Another way of processing heat exchanger surfaces is a mold before that with a galvanic layer or with a chemically applied Layer of metal, in particular chromium or nickel, of at least 2 up to 3 ⁇ m are coated.
- a nickel layer can preferably also be used an extremely thin copper pre-layer with a thickness of approx. 1 ⁇ m. Thereby a non-porous coating is produced. With a particularly thin and Even chrome plating is usually copper-plated, then nickel-plated and finally a chrome layer of less than 1 ⁇ m thick is applied. hard chrome plating is obtained in baths with a high current density and elevated temperature.
- the galvanic layer can also be used as a bright nickel plating or as Hard chrome plating layer can be formed.
- the amorphous hydrocarbon layer For example, like DLC (Diamond Like Carbon) layer using a CVD (Chemical Vapor Deposition) process can be applied.
- the temperature of the mold plates preferably on several Positions are continuously monitored and registered, and that with disproportionate Temperature rise the mold is replaced or regenerated.
- the measures proposed according to the invention result in considerable cost minimization in the continuous casting process by protecting the cooling channels in the mold plates against fouling.
- the availability of molds is increased.
- the economy of the entire casting process is improved.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2001122618 DE10122618A1 (de) | 2001-05-10 | 2001-05-10 | Verfahren zur Verzögerung der Belagbildung in Kühlkanälen von Stranggießkokillen |
| DE10122618 | 2001-05-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1256400A1 true EP1256400A1 (fr) | 2002-11-13 |
Family
ID=7684220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02009092A Ceased EP1256400A1 (fr) | 2001-05-10 | 2002-04-24 | Procédé de retardement de la formation de dépôts dans le canaux de refroidissement de lingotières de coulée continue |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1256400A1 (fr) |
| DE (1) | DE10122618A1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2301690A1 (fr) * | 2009-09-25 | 2011-03-30 | KME Germany AG & Co. KG | Coquille ou creuset et procédé de revêtement de surfaces d'échangeurs thermiques d'une coquille ou d'un creuset |
| CN109332614A (zh) * | 2018-11-12 | 2019-02-15 | 莱芜钢铁集团银山型钢有限公司 | 一种单点非平衡浇铸异型坯结晶器冷却控制装置及控制方法 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007002405A1 (de) | 2007-01-17 | 2008-07-24 | Sms Demag Ag | Stranggießkokille mit Kühlmittelkanal |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1583652A1 (de) * | 1967-07-11 | 1970-08-20 | Kabel Metallwerke Ghh | Vorrichtung zum kontinuierlichen Giessen von Metallstraengen |
| DE2106634A1 (en) * | 1971-02-12 | 1972-08-24 | Mitsubishi Kinzoku Kogyo K.K., Tokio | Graphite wall continuous casting mould - with a metal skin |
| JPS59185551A (ja) * | 1983-04-06 | 1984-10-22 | Osaka Fuji Kogyo Kk | 連続鋳造用鋳型及びその防錆加工方法 |
| JPS62107845A (ja) * | 1985-11-07 | 1987-05-19 | Mitsubishi Heavy Ind Ltd | 連続鋳造設備用冷却水の処理方法 |
| JPS62110839A (ja) * | 1985-11-08 | 1987-05-21 | Mitsubishi Heavy Ind Ltd | 連続鋳造設備用冷却水の処理法 |
| US5190593A (en) * | 1991-02-21 | 1993-03-02 | Kurzinski Cass R | Apparatus and method for cleaning the outside of the mold tube in a continuous casting machine |
| CH685865A5 (de) * | 1991-09-05 | 1995-10-31 | Concast Standard Ag | Kokille zum Stranggiessen von Stahl |
-
2001
- 2001-05-10 DE DE2001122618 patent/DE10122618A1/de not_active Ceased
-
2002
- 2002-04-24 EP EP02009092A patent/EP1256400A1/fr not_active Ceased
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1583652A1 (de) * | 1967-07-11 | 1970-08-20 | Kabel Metallwerke Ghh | Vorrichtung zum kontinuierlichen Giessen von Metallstraengen |
| DE2106634A1 (en) * | 1971-02-12 | 1972-08-24 | Mitsubishi Kinzoku Kogyo K.K., Tokio | Graphite wall continuous casting mould - with a metal skin |
| JPS59185551A (ja) * | 1983-04-06 | 1984-10-22 | Osaka Fuji Kogyo Kk | 連続鋳造用鋳型及びその防錆加工方法 |
| JPS62107845A (ja) * | 1985-11-07 | 1987-05-19 | Mitsubishi Heavy Ind Ltd | 連続鋳造設備用冷却水の処理方法 |
| JPS62110839A (ja) * | 1985-11-08 | 1987-05-21 | Mitsubishi Heavy Ind Ltd | 連続鋳造設備用冷却水の処理法 |
| US5190593A (en) * | 1991-02-21 | 1993-03-02 | Kurzinski Cass R | Apparatus and method for cleaning the outside of the mold tube in a continuous casting machine |
| CH685865A5 (de) * | 1991-09-05 | 1995-10-31 | Concast Standard Ag | Kokille zum Stranggiessen von Stahl |
Non-Patent Citations (3)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 009, no. 046 (M - 360) 27 February 1985 (1985-02-27) * |
| PATENT ABSTRACTS OF JAPAN vol. 011, no. 323 (M - 634) 21 October 1987 (1987-10-21) * |
| PATENT ABSTRACTS OF JAPAN vol. 011, no. 327 (M - 635) 24 October 1987 (1987-10-24) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2301690A1 (fr) * | 2009-09-25 | 2011-03-30 | KME Germany AG & Co. KG | Coquille ou creuset et procédé de revêtement de surfaces d'échangeurs thermiques d'une coquille ou d'un creuset |
| CN109332614A (zh) * | 2018-11-12 | 2019-02-15 | 莱芜钢铁集团银山型钢有限公司 | 一种单点非平衡浇铸异型坯结晶器冷却控制装置及控制方法 |
| CN109332614B (zh) * | 2018-11-12 | 2021-04-13 | 莱芜钢铁集团银山型钢有限公司 | 一种单点非平衡浇铸异型坯结晶器冷却控制装置及控制方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10122618A1 (de) | 2002-11-14 |
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| 17P | Request for examination filed |
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| AKX | Designation fees paid |
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| 17Q | First examination report despatched |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 18R | Application refused |
Effective date: 20071113 |