US20010054502A1 - Cooling plate and method for manufacturing a cooling plate - Google Patents

Cooling plate and method for manufacturing a cooling plate Download PDF

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Publication number
US20010054502A1
US20010054502A1 US09/861,747 US86174701A US2001054502A1 US 20010054502 A1 US20010054502 A1 US 20010054502A1 US 86174701 A US86174701 A US 86174701A US 2001054502 A1 US2001054502 A1 US 2001054502A1
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US
United States
Prior art keywords
plate member
channels
thickness
sections
cooling plate
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.)
Abandoned
Application number
US09/861,747
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English (en)
Inventor
Wolfgang Hörnschemeyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KM Europa Metal AG
Original Assignee
KM Europa Metal AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by KM Europa Metal AG filed Critical KM Europa Metal AG
Assigned to KM EUROPA METAL AKTIENGESELLSCHAFT reassignment KM EUROPA METAL AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HORNSCHEMEYER, WOLFGANG
Publication of US20010054502A1 publication Critical patent/US20010054502A1/en
Priority to US10/647,770 priority Critical patent/US6838044B2/en
Abandoned legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/10—Cooling; Devices therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B1/24—Cooling arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/12—Casings; Linings; Walls; Roofs incorporating cooling arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/24—Cooling arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/0002—Cooling of furnaces
    • F27D2009/0045—Cooling of furnaces the cooling medium passing a block, e.g. metallic
    • F27D2009/0048—Cooling of furnaces the cooling medium passing a block, e.g. metallic incorporating conduits for the medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/0002—Cooling of furnaces
    • F27D2009/0056—Use of high thermoconductive elements
    • F27D2009/0062—Use of high thermoconductive elements made from copper or copper alloy

Definitions

  • the present invention relates to a cooling plate and a method for manufacturing such a cooling plate for use in the inner lining of metallurgical furnaces, especially in smelting furnaces or shaft furnaces.
  • metallurgical furnaces are provided with an interchangeable, metallic inner lining, on which insulating materials made of a fireproof material, such as fireproof clay, can be attached.
  • a fireproof material such as fireproof clay
  • the prevailing temperatures inside the furnace are so high, that the lining must be cooled.
  • Cooling plates having integrated coolant channels are used in this connection.
  • Such cooling plates are usually situated between the furnace shell and the furnace brick lining, and connected to the cooling system of the furnace.
  • the sides of the cooling plates facing the interior of the furnace are provided with fireproof material.
  • Cooling plates are known, in which the coolant channels are formed by cast-iron pipes. These cooling plates do not effectively dissipate heat. In part this is because of the low thermal conductivity of cast iron. Additionally, effective heat dissipation may be prevented by the resistance between the cooling pipes and the plate member caused by an oxide layer or an air gap.
  • Cast cooling plates which are made of a copper material and have non-circular cooling channels, are known in this context. However, these have the disadvantage of the material being coarse-grained and non-uniform. This results in a poor thermal conductivity and the danger of early material fatigue. Furthermore, it is disadvantageous that structural defects of the material or damage to the material, such as microcracks on the cast cooling plate, are difficult to detect.
  • the object of the present invention is to provide a high-quality cooling plate having an increased cooling effect and a high efficiency, as well as to provide a method for cost-effectively manufacturing a cooling plate having coolant channels.
  • a cooling plate for use in the inner lining of metallurgical furnaces, especially smelting or shaft furnaces.
  • the cooling plate has a plate member that is made of a copper material having a fine-grained structure possessing an average particle size of less than 10 mm.
  • the plate member has integrated coolant channels. The thickness of the plate member is reduced by machining the final cross sections of the coolant channels.
  • a method including a number of steps. Initially, a raw ingot is provided that is made of a copper material. The ingot has a starting thickness that is greater than a final thickness of the plate member. The starting thickness of the raw ingot is reduced to the final thickness of the plate member, using at least one forming step. Coolant channels are produced in the raw ingot or the plate member prior to attaining the final thickness.
  • FIG. 1 is a perspective view of a cooling plate, according to one embodiment of the invention.
  • FIG. 2 is a schematic of the method sequence in the production of a cooling plate shown in FIG. 1, using three manufacturing steps.
  • FIG. 1 shows a perspective view of a cooling plate 1 for use in the inner lining of metallurgical furnaces, especially smelting or shaft furnaces such as blast furnaces, reduction systems, or electric-arc furnaces.
  • Cooling plate 1 includes a plate member 2 made of copper or a copper alloy, into which oval (circularly oblong) coolant channels 3 are integrated.
  • the copper material of plate member 2 has a fine-grained structure possessing an average particle size of less than 10 mm. A particle size less than 5 mm, preferably between 0.005 mm and 2 mm, is considered especially advantageous.
  • a first side 4 of plate member 2 has grooves 5 , which are subsequently introduced into plate member 2 , in order to accommodate fireproof material.
  • Cooling plate 1 of the present invention distinguishes itself by improved cooling and a more uniform heating profile on the inner side of the furnace, i.e., on the surface facing the molten mass.
  • the fine-grained structure improves the thermal conductivity considerably.
  • a reduction in the wall thickness of cooling plate 1 is possible in combination with the final coolant-channel cross-sections, which are, in particular, circularly oblong.
  • the cooling effect is considerably improved.
  • material savings can be achieved.
  • Plate member 2 can be made of a kneaded copper material (or other forgeable alloy) having a fine-grained structure.
  • rolled or cast material is also conceivable.
  • the present invention prefers a combined cold/hot forming, in particular a reduction in thickness, using rolling.
  • coolant channels 3 of plate member 2 whose thickness has been reduced, have an oval or circularly oblong, final cross-section. This helps to ensure that the heat-transfer surface is optimized for removing heat from the cooling plate.
  • FIG. 2 The manufacture of plate member 2 is shown schematically in FIG. 2.
  • the letter “A” indicates the initial state, and the letter “E” represents the final state.
  • a raw ingot 6 of copper material is initially provided, which has a starting thickness greater D 1 than the final thickness D 2 of plate member 2 .
  • Raw ingot 6 can be made of a forgeable alloy, a cast material, or a rolled material.
  • Channels 7 are mechanically drilled into raw ingot 6 , using deep-hole drilling. One can see that channels 7 essentially have circular cross-sections in initial state A.
  • the thickness of raw ingot 6 is then reduced by at least one forming step as shown in the secondary state indicated by the letter “B”, and indeed, to the final thickness D 2 of plate member 2 .
  • the reduction can be achieved by rolling, forging, extrusion, or pressing. It is also conceivable to combine these types of methods.
  • Coolant channels Q 1 are introduced into raw ingot 6 or plate member 2 prior to attaining the final thickness D 2 .
  • coolant channels Q 1 can already be in raw ingot 6 to begin with, or they can be produced in the course of reducing the thickness. In this connection, it is conceivable to manufacture them in steps, while simultaneously changing their cross-sections.
  • raw ingot 6 has a relatively coarse grain structure.
  • starting thickness D 1 of raw ingot 6 is reduced to final thickness D 2 of plate member 2 .
  • This rolling operation deforms cross-sections Q 1 of channels 7 into final cross-sections Q 2 which, as mentioned above, are preferably oval, and therefore, circularly oblong.
  • plate member 2 obtains a fine-grained structure in the previously mentioned particle-size range.
  • plate member 2 whose thickness is reduced to final thickness D 2 can be examined for structural weak points or defects or possible damage, using ultrasonic material testing.
  • weak points can be detected early, without causing breakdowns and disadvantageous operating stoppages in the plant.
  • channels 7 having a circular cross-section are introduced into raw ingot 6 or plate member 2 prior to attaining the final thickness.
  • Channels 7 can be produced using all known methods. If raw ingot 6 or plate member 2 is then deformed to the final thickness, the cross-sections of channels 7 are likewise deformed, and indeed, into the shape of an oval, and consequently, into the shape of an elongated circle. These cross-sections contribute to an improvement in the thermal conductivity.
  • the starting thickness of raw ingot 6 is initially reduced by cold rolling.
  • the copper material obtains a recrystallized, fine-grained structure, in which the typical, solidified structure of the cast copper of the ingot is substantially or completely eliminated.
  • Channels, whose cross-sections are circular, are subsequently introduced into the raw ingot having a reduced thickness.
  • the thickness of this raw ingot is then reduced to the final thickness in at least one working step, using hot rolling, the circular cross-sections of the channels being deformed into oval coolant-channel cross-sections that are advantageous from the standpoint of heat transfer.
  • Channels 7 in raw ingot 6 or plate member 2 can be drilled mechanically, using deep-hole drilling. However, it is also conceivable for the channels to be already cast in raw ingot 6 .
  • the method allows the cost-effective manufacture of high-quality cooling plate 1 , which has high efficiency improved cooling, along with a uniform heat profile of the surfaces acted upon by heat. In this manner, it is possible to reduce the wall thickness of a cooling plate 1 in comparison with conventional cooling plates having a coarse-grained structure. This results in material and cost savings.
  • the method yields high-quality cooling plate 1 having plate member 2 that is distinguished by a structure possessing an average particle size of less than 10 mm.
  • the forming can achieve an even finer structure having particle sizes between 0.005 mm and 2 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Blast Furnaces (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Continuous Casting (AREA)
US09/861,747 2000-05-19 2001-05-21 Cooling plate and method for manufacturing a cooling plate Abandoned US20010054502A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/647,770 US6838044B2 (en) 2000-05-19 2003-08-25 Cooling plate and method for manufacturing a cooling plate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10024587A DE10024587A1 (de) 2000-05-19 2000-05-19 Kühlplatte
DE10024587.0 2000-05-19

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/647,770 Division US6838044B2 (en) 2000-05-19 2003-08-25 Cooling plate and method for manufacturing a cooling plate

Publications (1)

Publication Number Publication Date
US20010054502A1 true US20010054502A1 (en) 2001-12-27

Family

ID=7642670

Family Applications (2)

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US09/861,747 Abandoned US20010054502A1 (en) 2000-05-19 2001-05-21 Cooling plate and method for manufacturing a cooling plate
US10/647,770 Expired - Fee Related US6838044B2 (en) 2000-05-19 2003-08-25 Cooling plate and method for manufacturing a cooling plate

Family Applications After (1)

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US10/647,770 Expired - Fee Related US6838044B2 (en) 2000-05-19 2003-08-25 Cooling plate and method for manufacturing a cooling plate

Country Status (17)

Country Link
US (2) US20010054502A1 (ko)
EP (1) EP1156124A1 (ko)
JP (1) JP2002003916A (ko)
KR (1) KR20010105265A (ko)
CN (1) CN1326005A (ko)
AR (1) AR028417A1 (ko)
AU (1) AU774297B2 (ko)
BR (1) BR0102051A (ko)
CA (1) CA2348213A1 (ko)
CZ (1) CZ20011649A3 (ko)
DE (1) DE10024587A1 (ko)
MX (1) MXPA01004923A (ko)
PL (1) PL347602A1 (ko)
RU (1) RU2244889C2 (ko)
SK (1) SK6592001A3 (ko)
TW (1) TW544466B (ko)
ZA (1) ZA200104033B (ko)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004011866A1 (en) * 2002-07-31 2004-02-05 Outokumpu Oyj Cooling element
US6742579B1 (en) * 2002-12-30 2004-06-01 Mikhail Levitin Freezing plate
US20070068664A1 (en) * 2003-12-03 2007-03-29 Paul Wurth S.A. Method of manufacturing a cooling plate and a cooling plate manufactured with this method

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU91453B1 (en) * 2008-06-06 2009-12-07 Wurth Paul Sa Method for manufacturing a cooling plate for a metallurgical furnace
DE102012112923A1 (de) * 2012-12-21 2014-06-26 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Elektromaschine
CN104191164A (zh) * 2014-08-01 2014-12-10 汕头华兴冶金设备股份有限公司 冶金炉流槽的加工方法
KR101867151B1 (ko) * 2016-04-07 2018-06-12 안장홍 주조 몰드용 고효율 냉각플레이트 및 그 제조방법
IT201600116956A1 (it) 2016-11-18 2018-05-18 Steb S R L Sistema e metodo di raffreddamento e recupero della scoria bianca usata nei processi siderurgici
CN108247283B (zh) * 2016-12-29 2020-07-28 核工业西南物理研究院 一种超长超细异形多流道冷却板的加工制造方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2907511C2 (de) 1979-02-26 1986-03-20 Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover Kühlplatte für Schachtöfen, insbesondere Hochöfen, und Verfahren zur Herstellung derselben
DE3339734C1 (de) * 1983-11-03 1985-03-14 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Plattenkuehler fuer metallurgische OEfen,insbesondere Hochoefen
ATE205546T1 (de) * 1995-05-05 2001-09-15 Sms Demag Ag Kühlplatten für schachtöfen
BR9806859A (pt) * 1997-01-08 2000-04-18 Wurth Paul Sa Processo para fabricação de uma placa de resfriamento para fornos
DE19801425C2 (de) 1998-01-16 2000-08-10 Sms Demag Ag Kühlplatte für Schachtöfen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004011866A1 (en) * 2002-07-31 2004-02-05 Outokumpu Oyj Cooling element
US20060049554A1 (en) * 2002-07-31 2006-03-09 Outokumpu Oyj Cooling element
CN100402670C (zh) * 2002-07-31 2008-07-16 奥托库姆普联合股份公司 冷却元件及其制造方法
US7465422B2 (en) 2002-07-31 2008-12-16 Outotec Oyi Cooling element
US6742579B1 (en) * 2002-12-30 2004-06-01 Mikhail Levitin Freezing plate
US20070068664A1 (en) * 2003-12-03 2007-03-29 Paul Wurth S.A. Method of manufacturing a cooling plate and a cooling plate manufactured with this method

Also Published As

Publication number Publication date
AU4392601A (en) 2001-11-22
AR028417A1 (es) 2003-05-07
SK6592001A3 (en) 2001-12-03
US6838044B2 (en) 2005-01-04
EP1156124A1 (de) 2001-11-21
AU774297B2 (en) 2004-06-24
US20040035510A1 (en) 2004-02-26
BR0102051A (pt) 2001-12-18
MXPA01004923A (es) 2003-08-20
CZ20011649A3 (cs) 2002-02-13
TW544466B (en) 2003-08-01
DE10024587A1 (de) 2001-11-22
PL347602A1 (en) 2001-12-03
ZA200104033B (en) 2001-11-19
RU2244889C2 (ru) 2005-01-20
KR20010105265A (ko) 2001-11-28
CN1326005A (zh) 2001-12-12
JP2002003916A (ja) 2002-01-09
CA2348213A1 (en) 2001-11-19

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Legal Events

Date Code Title Description
AS Assignment

Owner name: KM EUROPA METAL AKTIENGESELLSCHAFT, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HORNSCHEMEYER, WOLFGANG;REEL/FRAME:012077/0180

Effective date: 20010605

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION