US3570583A - Method for cooling the mold blocks of a casting machine with caterpillar mold - Google Patents

Method for cooling the mold blocks of a casting machine with caterpillar mold Download PDF

Info

Publication number
US3570583A
US3570583A US758492A US3570583DA US3570583A US 3570583 A US3570583 A US 3570583A US 758492 A US758492 A US 758492A US 3570583D A US3570583D A US 3570583DA US 3570583 A US3570583 A US 3570583A
Authority
US
United States
Prior art keywords
casing
mold
coolant
mold blocks
cooling
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.)
Expired - Lifetime
Application number
US758492A
Other languages
English (en)
Inventor
Wilhelm Friedrich Lauener
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.)
Prolizenz AG
Rio Tinto Switzerland AG
Original Assignee
Prolizenz 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 Prolizenz AG filed Critical Prolizenz AG
Application granted granted Critical
Publication of US3570583A publication Critical patent/US3570583A/en
Assigned to SWISS ALUMINIUM LTD. reassignment SWISS ALUMINIUM LTD. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: PROLIZENZ AG, A CORP. OF SWITZERLAND
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/068—Accessories therefor for cooling the cast product during its passage through the mould surfaces
    • B22D11/0688—Accessories therefor for cooling the cast product during its passage through the mould surfaces by cooling the caterpillars

Definitions

  • the invention relates to a method and to a device for cooling the mold blocks of a casting machine with a caterpillar mold, especially of a machine for the casting of strips of nonferrous metals, chiefly of aluminum and aluminum alloys.
  • the mold cavity is defined by a cooperating pair of endless chains of articulated mold blocks, and means are provided for revolving each of said chains about its own center.
  • the chains are mounted so that over a portion of their lengths they are in engagement one with the other and define between them a mold cavity having walls which move continuously as the respective chains are revolved together at the same linear speed.
  • Machines of this kind have been named machines with caterpillar molds.
  • the mold blocks of one row are not tied together; they are moved separately in a guide system and maintained in circuit in such a way that they meet ever again at the pouring end of the mold cavity to form with the blocks of the other row a closed mold.
  • the Hunter-Douglas machine is characterized chiefly by the fact that each mold block is cooled separately by water circu lation.
  • the coolant is supplied thereto and withdrawn therefrom through rotatable coolant distributors connected to the moving coolant passageways in the blocks by lengths of flexible hose.
  • This cooling system is intricate and the Hunter- Douglas machine is inaccessible on the side of the rotating hoses.
  • the mold blocks of a casting machine with caterpillar mold are cooled by spraying a coolant liquid against the mold blocks where their molding face is turned away from the casting.
  • the cooling liquid generally water
  • the cooling liquid is sprayed against the blocks in a case in which a reduced air pressure is maintained. Because of the air underpressure in the case respectively because of the inflow of air into the case caused by the underpressure, and an outflow of cooling liquid out of the case between the same and the blocks and the penetration of the liquid between the contact surface of the blocks is prevented.
  • the mold blocks are cooled. by sprinkling during their upward travel; they leave the zone of the cooling case quite dry, so that no disturbance can happen due to any residual coolant.
  • the invention relates also to a device for carrying out the method according to the invention.
  • the device comprises substantially a case, preferably made of sheet metal, which is open towards the mold blocks and encloses a great number of spray nozzles for the coolant, for instance several rows of spraying pipes, and is connected to a device producing reduced pressure.
  • the said device has to maintain the necessary underpressure during cooling.
  • FIG. 1 is a fragmentary perspective view, partly in section, of a preferred embodiment of the cooling case in cooperation with a vertically disposed caterpillar mold;
  • FIG. 2 is a fragmentary sectional view taken along the line 11-11 of FIG. 1;
  • FIG. 3 is a fragmentary elevational view seen in the direction of the arrow A of FIG. 1;
  • FIG. 4 is a schematic elevational view, partly in section, of an auxiliary unit for the operation of the cooling device according to FIG. 1;
  • FIG. 5 is a fragmentary vertical sectional view of a modified upper cooling case of a caterpillar mold disposed horizontally;
  • FIG. 6 is a fragmentary vertical sectional view of the lower cooling case of the modification of FIG. 5.
  • a steel-sheet case 10 is open towards the blocks 11, which move upward in the present example, and reaches to the latter with a clearance as small as possible.
  • Two vertical water supplying tubes 12 are provided, the lower extremity of each of which is connected to a pressure water-conduit 32.
  • the water which rises in the tubes 12 flows into the horizontal spraying pipes 13 which are provided with nozzles l4 through which water is sprayed against the molding face of the blocks 11.
  • a deflector 15 is disposed over each spray tube; the purpose of the said deflector is to prevent the pouring of a substantial amount of water down the walls of the mold blocks ll and its interference with the cooling by spraying.
  • the bottom 16 of the case It) acts as a collecting vessel and is provided with an outlet tube l7.
  • a rarefied pressure is produced in the case 10.
  • the said tube is closed on its upper end and is provided with boreholes 19 along its wall 9, and on the side away from the blocks, in order to avoid the entry of spray water, its bottom is connected to the source.
  • the air sucked out of the case enters the tube 18 through the lateral openings 19; the lowest of them must, of course, be at such a level over the bottom of the collecting vessel 16 that it cannot suck in water.
  • Lateral sealing ledges 20 are provided, and a transversal sealing ledge 21 at the upper part of the case; the latter reaches into the cavity of the mold blocks; a similar transversal sealing ledge 22 is fixed on the lower part of the case 10.
  • the clearance between the surfaces of the blocks 11 and the sealing ledges 20, 21 and 22 amounts to several tenths of a millimeter, for example to about 0.5 to 1 mm. This clearance depends on the power of the device producing the rarefied pressure.
  • a rarefied pressure of 200 to 300 millimeters water column produced by a fan is quite sufficient under the above-mentioned conditions. in any event the pressure in the case 10 must be so low and the airflow through the clearance (indicated by arrows with white head in FIGS. 1 to 3) so powerful that no water can escape through the clearance between the sealing ledges and the surface of the blocks. MOreover the outlet tube 17 must be disposed in such a manner that it prevents the air from entering the case 10.
  • An atmospheric excess pressure of 2m 10in the ascending pipes 12 for the cooling water is generally sufficient. The most favorable pressure may be found most simply in each case by casting trials.
  • Angle irons 23 support the guide rolls 24, which touch laterally the mold blocks 11.
  • Two adjustable mounting frames 25 made from channel irons are connected to the structure which supports the casting machine.
  • the number of the spraying pipes 13 depends on their cooling effect and the extent of the sprayed surface, on the available volume of cooling liquid and on the amount of heat which needs to be dissipated.
  • FIG. 1 there are disposed about two spraying pipes for each mold block.
  • the sprayed surface is advantageously at least as large as the working surface (inner wall) of the mold which is in contact with the casting metal prior to the separation of the solidifying casting from the mold wall.
  • FIG. 4 shows schematically an auxiliary unit utilizable for operating the cooling case according to FIG. 1.
  • the said unit is in this view an integral component of the cooling device, but this is not absolutely necessary for carrying out the method of the invention. Nevertheless it offers several advantages, for instance better starting conditions and the possibility to add to the cooling water a die lubricant, for instance an emulsion of oil in water, or a suspension of graphite.
  • the cooing water 26 flowing out from the cooling case flows through a cooler 27 and a discharge pipe 28 into the coolant reservoir 29.
  • the coolant is supplied by ma means of a pump 30 driven by a motor 31 to the pressure water pipe 32, from which it flows through the spraying pipes 13; thereafter it is sprayed by the nozzles 14 against the working surfaces of the mold blocks 11 and collected on the bottom of the case 10; finally it flows again through the outlet tube 17 and the discharge pipe into the coolant reservoir 29.
  • the cooling water remains in circulation; therefore, substantially only water lost by evaporation and, if a lubricant is used in the cooling water, only little lubricant need to be replenished.
  • EXAMPLE 1000 mm. wide and 20 mm. thick bands of pure aluminum are cast vertically downward in a machine with a caterpillar mold at a speed of 2.5 meters per minute.
  • the mold blocks made from forged steel have a thickness of 250 mm. at the wide mold wall.
  • the metal poured into the mold has a temperature of 680 to 700 C., the emerging casting a surface temperature of 540 to 450 C.
  • the cooling water is supplied with a pressure of 6 kg. per square centimeter and sprayed on the mold blocks through ten spraying pipes.
  • the speed of the circulating cooling water amounts to 800 liters per minute; soon after the beginning of the casting operation, the cooling water for the mold blocks has a temperature of about 30 C. at the inlet of the mold and of about 55 C. when flowing out through the outlet tube 17.
  • the mold blocks Directly under the cooling case the mold blocks have at their mold face a temperature of 170 to 200 C. and when leaving the case a temperature of 60 to 70 C.
  • the casting metal flows vertically downward.
  • the method and the device according to the invention may instead be used also with casting upward as well as with casting in any other position.
  • FIGS. and 6 serve as examples.
  • FIG. 5 shows schematically the upper and FIG. 6 the lower cooling device of a caterpillar casting machine disposed horizontally.
  • a case 33 is provided, made of sheet steel (corresponding to the case of FIG. 1); and has on its interior a rarefied pressure.
  • This case 33 is connected through the tube 34 to an exhauster. It is provided at its whole periphery with sealing ledges 35 and reaches to the mold blocks 11 within 0.5
  • the case 33 is divided in two chambers 37 and-38 by a partition (intermediate bottom) 36.
  • Spraying pipes 39 are disposed in the chamber 37; they spray cooling water through nozzles 40 against the mold blocks 11.
  • Tubes 41 disposed through the partition 36 are welded to the .latter; they connect the chamber 37 to the chamber 38. They are intended to remove by suction the cooling water accumulating on the die halves or blocks and to conduct it into the upper chamber 38, from which it flows out through the pipe 42.
  • the tubes 41 reach down nearly to the surface of the mold blocks and surmount the partition 36 up to the edge of the discharge pipe 42.
  • the tubes 41 have the further purpose of preventing the escape of water between the mold blocks and the sealing ledges as well as through the joint abutment between the mold blocks, by means of an intensive air flow.
  • the lower cooling device which is represented in FIG. 6, does not need any partition. It comprises substantially a sheet case 43 with outlet tube 44 for the water.
  • the cooling water is sprayed by spraying pipes 45 against the mold blocks ll and flows at the bottom of the case into the outlet pipe 44.
  • a suction pipe 47 with apertures 48 is disposed in the case 43 and is connected to a device I (not shown) producing rarefied pressure.
  • a method for cooling with the aid of a casing open at one side, the molding faces of mold blocks of a casting machine with a caterpillar mold, the steps comprising positioning the casing with the open side closely adjacent the molding faces where the molding faces are turned away from the casting, spraying through the open side a coolant against the molding faces while maintaining in the casing a rarefied air pressure such that due to the entry of air into the casing the coolant is restrained from escaping through any space between the casing and the mold blocks.
  • a device for use in spray cooling the molding faces of a caterpillar mold having mold blocks, comprising a casing connected to a source of rarefied air pressure and open towards the mold blocks and defining therewith a clearance of several tenths of a millimeter, a conduit for supplying a coolant, said casing containing several spraying nozzles fed from said conduit and directed against the molding faces.
  • a device for the vertical continuous casting, comprising horizontal spraying pipes connected to said conduit and disposed one above the other and having each several of said spraying nozzles, a deflector disposed over each spraying pipe for drawing off the water pouring down the wall of the mold blocks to the inside of the casing over the spraying pipes.
  • a device for the horizontal or nearly horizontal casting, comprising a discharge pipe fed from said conduit, said casing including an upper cooling case divided into two chambers, a partition between said chambers; spraying pipes in one of the chambers connected to said discharge pipe; tubes welded to the partition and connecting said one chamber to the other chamber reaching down nearly to the surface of the mold blocks and rising above the partition up to above the top edge of said discharge pipe, and a pipe connecting said other chamber to said source.
  • a device comprising a tube disposed in the casing and connecting said casing to said source, and through which tube air and vapor are sucked off due to the rarefied pressure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Casting Devices For Molds (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
US758492A 1967-09-07 1968-09-09 Method for cooling the mold blocks of a casting machine with caterpillar mold Expired - Lifetime US3570583A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1250667A CH456056A (de) 1967-09-07 1967-09-07 Verfahren zum Kühlen der Kokillenhälften einer Giessmaschine mit Raupenkokille und Vorrichtung zur Ausführung des Verfahrens

Publications (1)

Publication Number Publication Date
US3570583A true US3570583A (en) 1971-03-16

Family

ID=4383639

Family Applications (1)

Application Number Title Priority Date Filing Date
US758492A Expired - Lifetime US3570583A (en) 1967-09-07 1968-09-09 Method for cooling the mold blocks of a casting machine with caterpillar mold

Country Status (12)

Country Link
US (1) US3570583A (OSRAM)
JP (1) JPS4815775B1 (OSRAM)
AT (1) AT285847B (OSRAM)
BE (1) BE718795A (OSRAM)
CH (1) CH456056A (OSRAM)
ES (1) ES357582A1 (OSRAM)
FR (1) FR1582916A (OSRAM)
GB (1) GB1186466A (OSRAM)
IS (1) IS991B6 (OSRAM)
NL (1) NL154131B (OSRAM)
NO (1) NO122093B (OSRAM)
SE (1) SE328096B (OSRAM)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4938277A (en) * 1988-12-08 1990-07-03 Korver Clayton P Casting mold with expansion member for radiation plates
WO1995026841A1 (en) * 1994-03-30 1995-10-12 Lauener Engineering, Ltd. Method and apparatus for continuously casting metal
US5725046A (en) * 1994-09-20 1998-03-10 Aluminum Company Of America Vertical bar caster
US6125915A (en) * 1994-03-30 2000-10-03 Golden Aluminum Company Method of and apparatus for cleaning a continuous caster
US6354364B1 (en) * 1994-03-30 2002-03-12 Nichols Aluminum-Golden, Inc. Apparatus for cooling and coating a mold in a continuous caster
US6446703B1 (en) * 1998-09-30 2002-09-10 Nichols Aluminum-Golden, Inc. Method and apparatus for improving the quality of continuously cast metal
WO2013063693A1 (en) * 2011-11-04 2013-05-10 Hatch Ltd. Cooling of chill molds using baffles
CN111545729A (zh) * 2020-06-03 2020-08-18 无锡市蠡湖铸业有限公司 一种冷铁网格线加工设备及其加工工艺
US10758970B2 (en) 2016-11-29 2020-09-01 Sms Group Gmbh Caterpillar casting machine and method for producing a cast material from liquid metal

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3763921A (en) * 1971-03-24 1973-10-09 Dow Chemical Co Direct chill casting method
US4589470A (en) * 1981-12-04 1986-05-20 Electric Power Research Institute Inc. Method and apparatus for cooling a moving chill substrate

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1865443A (en) * 1928-11-06 1932-07-05 John E Perry Method and apparatus for continuous casting of steel billets
US2560639A (en) * 1947-07-07 1951-07-17 Robertshaw Fulton Controls Co Continuous casting of metal
CA594346A (en) * 1960-03-15 Easton Rufus Method and apparatus for casting molten metals

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA594346A (en) * 1960-03-15 Easton Rufus Method and apparatus for casting molten metals
US1865443A (en) * 1928-11-06 1932-07-05 John E Perry Method and apparatus for continuous casting of steel billets
US2560639A (en) * 1947-07-07 1951-07-17 Robertshaw Fulton Controls Co Continuous casting of metal

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4938277A (en) * 1988-12-08 1990-07-03 Korver Clayton P Casting mold with expansion member for radiation plates
US6354364B1 (en) * 1994-03-30 2002-03-12 Nichols Aluminum-Golden, Inc. Apparatus for cooling and coating a mold in a continuous caster
WO1995026841A1 (en) * 1994-03-30 1995-10-12 Lauener Engineering, Ltd. Method and apparatus for continuously casting metal
US6125915A (en) * 1994-03-30 2000-10-03 Golden Aluminum Company Method of and apparatus for cleaning a continuous caster
US5839500A (en) * 1994-03-30 1998-11-24 Lauener Engineering, Ltd. Apparatus for improving the quality of continously cast metal
US6019159A (en) * 1994-03-30 2000-02-01 Golen Aluminum Company Method for improving the quality of continuously cast metal
US6089308A (en) * 1994-03-30 2000-07-18 Nichols Aluminum Method and apparatus for improving the quality of continuously cast metal
US5697423A (en) * 1994-03-30 1997-12-16 Lauener Engineering, Ltd. Apparatus for continuously casting
US5725046A (en) * 1994-09-20 1998-03-10 Aluminum Company Of America Vertical bar caster
US6446703B1 (en) * 1998-09-30 2002-09-10 Nichols Aluminum-Golden, Inc. Method and apparatus for improving the quality of continuously cast metal
CN103987477A (zh) * 2011-11-04 2014-08-13 哈茨有限公司 使用挡板对冷硬用铸模的冷却
WO2013063693A1 (en) * 2011-11-04 2013-05-10 Hatch Ltd. Cooling of chill molds using baffles
US9377254B2 (en) 2011-11-04 2016-06-28 Hatch Ltd. Cooling of chill molds using baffles
CN103987477B (zh) * 2011-11-04 2016-07-06 哈茨有限公司 用于冷却熔融材料的设备、系统和方法
US10758970B2 (en) 2016-11-29 2020-09-01 Sms Group Gmbh Caterpillar casting machine and method for producing a cast material from liquid metal
CN111545729A (zh) * 2020-06-03 2020-08-18 无锡市蠡湖铸业有限公司 一种冷铁网格线加工设备及其加工工艺

Also Published As

Publication number Publication date
DE1758933B2 (de) 1973-02-01
FR1582916A (OSRAM) 1969-10-10
NO122093B (OSRAM) 1971-05-18
NL6812517A (OSRAM) 1969-03-11
ES357582A1 (es) 1970-03-16
NL154131B (nl) 1977-08-15
JPS4815775B1 (OSRAM) 1973-05-17
IS991B6 (is) 1978-06-15
SE328096B (OSRAM) 1970-09-07
CH456056A (de) 1968-05-15
BE718795A (OSRAM) 1968-12-31
GB1186466A (en) 1970-04-02
DE1758933A1 (de) 1971-03-04
IS1752A7 (is) 1968-10-09
AT285847B (de) 1970-11-10

Similar Documents

Publication Publication Date Title
US3570583A (en) Method for cooling the mold blocks of a casting machine with caterpillar mold
US2904860A (en) Metal casting method and apparatus
US2837791A (en) Method and apparatus for continuous casting
US6070647A (en) Casting metal strip
JP3678848B2 (ja) 金属ストリップ鋳造方法及び装置並びに双ロール鋳造機の鋳造溜めに溶融金属を送給する耐火ノズル
US6073680A (en) Strip casting
US6012508A (en) Strip casting
JPH04251639A (ja) ストリップ鋳造方法及び装置
JP3007942B2 (ja) 金属ストリップ鋳造方法及び装置
US3467168A (en) Continuous casting apparatus and method including mold lubrication,heat transfer,and vibration
JPH0470105B2 (OSRAM)
KR100314994B1 (ko) 연속주조설비에서빌릿을유도하기위한방법및장치
US3512574A (en) Continuous casting process and apparatus
US3200456A (en) Continuous casting method and apparatus
US3349835A (en) Continuous horizontal strip-casting apparatus
GB1373404A (en) Method and machine for continuous centrifugal casting of hollow shapes
US3759313A (en) R casting nonferrous metal strips method of starting a casting machine having caterpillar type molds fo
US3726336A (en) Continuous casting of metallic elements
US4220192A (en) Combined roller support and spray cooling system for continuous casting molds
US3352350A (en) Horizontal continuous casting venting method
SE450554B (sv) Forfarande for strenggjutning av en stang av stal
US3603377A (en) Curvilinear mold and secondary cooling system for continuously cast metal
US3938584A (en) Apparatus for cooling continuous castings
US3799239A (en) Method for continuous casting of metal
US2316144A (en) Formation of metal shapes

Legal Events

Date Code Title Description
AS Assignment

Owner name: SWISS ALUMINIUM LTD., CH-3965 CHIPPIS, SWITZERLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:PROLIZENZ AG, A CORP. OF SWITZERLAND;REEL/FRAME:004137/0878

Effective date: 19810921

Owner name: SWISS ALUMINIUM LTD., SWITZERLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PROLIZENZ AG, A CORP. OF SWITZERLAND;REEL/FRAME:004137/0878

Effective date: 19810921