EP1348502A1 - Procédé de fabrication de tôle métallique amorphe - Google Patents

Procédé de fabrication de tôle métallique amorphe Download PDF

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Publication number
EP1348502A1
EP1348502A1 EP03006039A EP03006039A EP1348502A1 EP 1348502 A1 EP1348502 A1 EP 1348502A1 EP 03006039 A EP03006039 A EP 03006039A EP 03006039 A EP03006039 A EP 03006039A EP 1348502 A1 EP1348502 A1 EP 1348502A1
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EP
European Patent Office
Prior art keywords
metallic material
pool
molten
amorphous
sheet
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.)
Withdrawn
Application number
EP03006039A
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German (de)
English (en)
Inventor
Michael M. Mcrae
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.)
Howmet Corp
Original Assignee
Howmet Research Corp
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 Howmet Research Corp filed Critical Howmet Research Corp
Publication of EP1348502A1 publication Critical patent/EP1348502A1/fr
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D25/00—Special casting characterised by the nature of the product
    • 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
    • B22D11/01—Continuous casting of metals, i.e. casting in indefinite lengths without moulds, e.g. on molten surfaces

Definitions

  • the present invention relates to a method of making a thin sheet of amorphous metallic material.
  • Amorphous (oftentimes called glassy) metallic materials have been made by rapid solidification processes.
  • amorphous metallic powder has been made by various types of atomization processes where the molten metallic material is discharged from an atomization nozzle, pressure and/or gas atomized, and rapidly cooled to solidify as amorphous powder particles.
  • Amorphous metallic ribbon has been made by the so-called melt spinning process where the molten metallic material is discharged onto a rotating, cooled wheel to rapidly solidify as a flat ribbon.
  • the width dimension of melt spun, flat ribbon has been limited by the relatively narrow width of the cooled wheel on which it is rapidly solidified. For example, melt spun ribbons typically have a width dimension not exceeding approximately 1 1/2 inches.
  • An embodiment of the present invention provides a method of making a sheet of amorphous metallic material wherein molten metallic material capable of rapidly solidifying to an amorphous microstructure is discharged onto a surface of a liquid cooling pool.
  • the liquid cooling pool comprises a thermally conductive liquid material, such as a molten metal or alloy, having a lower temperature than that of the molten metallic material discharged thereon.
  • the molten metallic material is discharged onto the pool and assumes a width dimension of the pool. This width dimension is imparted to the solidified amorphous sheet as the molten metallic material rapidly solidifies on the surface of the pool.
  • the solidified amorphous sheet is removed from the pool surface at a location remote from where the molten material is discharged onto the pool.
  • Molten amorphous metallic material is fed onto the pool surface at a rate to control the thickness dimension of the amorphous sheet.
  • the present invention provides a method of making a sheet S of amorphous metallic material wherein the sheet is considered to be amorphous when its microstructure is at least 50% amorphous or glassy, preferably when its microstructure is substantially 100% amorphous or glassy.
  • the amorphous or glassy microstructure is a non-crystalline, non-ordered structure that is evident from X-ray diffraction patterns thereof.
  • Amorphous metallic materials which can be made into amorphous sheet by practice of the invention include, but are not limited to, aluminum based alloys, iron based alloys, titanium based alloys, zirconium based alloys such as Vitreloy amorphous alloy, and other amorphous alloys. When rapidly solidified at appropriate relatively high cooling rates, these metallic materials can produce an amorphous microstructure described above. Cooling rates on the order of 10 3 degrees F/second maximum may be involved.
  • the invention can be practiced to make a sheet S of amorphous metallic material where a sheet for purposes of illustration and not limitation may have a width dimension of about 3 inches and above, such as for example about 4 to about 12 inches, and a thickness up to about 2 inches, such as for example about 0.1 inch to about 0.5 inch and above, with any desired length, the particular sheet dimensions achievable being dependent on the particular amorphous alloy being solidified.
  • molten metallic material M capable of rapidly solidifying to an amorphous microstructure is melted and heated to a selected casting temperature in an induction melting crucible 10 received within an induction coil 12 of a melting vessel 14.
  • the crucible includes a rectangular shaped nozzle opening 16 in the bottom crucible wall 10a and in an underlying crucible support plate 15.
  • the nozzle opening 16 is formed by a ceramic nozzle insert 17 received and sealed in crucible bottom wall 10a and crucible support plate 15.
  • a complementary shaped ceramic nozzle stopper rod 18 is received in the nozzle opening 16 and is moved by stopper rod actuator 21 to close off and open the nozzle opening 16 in a manner to meter the molten metallic material onto a horizontal, quiescent upper surface 20a of liquid cooling pool 20 residing in a vessel 22.
  • Solid ingots I of the amorphous metallic material can be fed through a door 31a in housing 31 into the crucible 10 in a manner to provide continuous melting and supply of the molten metallic material onto the upper surface 20a of the pool 20.
  • pre-melted metallic material can be supplied to the crucible 10 from a suitable source, such as a supply ladle and the like.
  • the crucible 10 and pool 20 can reside in a common chamber 30 of a housing 31 with the chamber 30 pressurized to a slight superambient pressure (e.g. greater than 1.1 atmospheres) using a source Ar of inert gas, such as argon, or other gas that is non-reactive with the molten metallic material M.
  • a source Ar of inert gas such as argon, or other gas that is non-reactive with the molten metallic material M.
  • the use of an inert or non-reactive gas atmosphere in chamber 30 controls (reduces) oxygen content of the chamber to avoid unwanted reaction of the molten and solidified amorphous metallic material with oxygen as well as other gases.
  • the crucible 10 can reside in a melting chamber 33 disposed above the pool 20 and slightly pressurized with an inert or non-reactive gas atmosphere, while the pool 20 in vessel 22 is disposed in ambient air.
  • the melting chamber 33 is pressurized slightly above atmospheric pressure using an inert or non-reactive gas and includes an opening 33a through which the molten metallic material can be discharged on to pool surface 20a.
  • a blanket B of argon or other inert or non-reactive gas is provided by piping the argon gas (which is heavier than air) to reside above the top surface of the molten and solidified amorphous metallic material on the pool surface 20a.
  • the gas blanket B stays in place above the top surface of the metallic material as a result of its higher density than air and can be supplied with additional gas over time as necessary to maintain the blanket.
  • the liquid cooling pool 20 comprises a thermally conductive liquid material, such as a molten metal or alloy, having a melting point lower than that of the amorphous metallic material M discharged thereon from nozzle opening 16.
  • the liquid material comprising the liquid cooling pool 20 preferably does not react or alloy with the amorphous metallic material discharged and solidified thereon in a manner that adversely affects its amorphous properties and has a density such that the amorphous metallic material will float on the surface 20a of the pool 20.
  • the temperature of the liquid cooling pool 20 is maintained below the temperature of the molten metallic material M discharged from the crucible 10.
  • the liquid cooling pool 20 provides a high enough cooling rate to rapidly solidify the molten metallic material M within for example only, 10 seconds of its contacting the pool surface 20a.
  • a molten tin pool maintained at a temperature of 450 to 500 degrees F can be used to rapidly solidify a molten amorphous metallic material.
  • the molten tin pool can be used to rapidly solidify a conventional aluminum based amorphous alloy that is discharged from crucible 10 at a temperature of 1300 degrees F (alloy melting point of 1200-1250 degrees F) and at a rate of 1 to 10 pounds/second.
  • a solidified amorphous sheet may be produced having an exemplary thickness of about 0.1 to about 0.3 inch, an exemplary width of about 4 to about 12 inches and exemplary length of about 12 to about 36 inches and a microstructure that is substantially 100% amorphous or glassy.
  • the vessel 22 includes a laterally elongated ceramic end stop 32 proximate the nozzle opening 16 and extending substantially parallel with the nozzle opening 16.
  • the ceramic stop 32 defines an end of the sheet of molten metallic material M as it is discharged and spreads over onto the flat, quiescent upper surface 20a of the pool 20.
  • the width dimension W of pool 20 between side walls 22a of the vessel 22 defines the width dimension of the amorphous sheet S to be produced since the molten amorphous metallic material discharged from the nozzle opening 16 will spread out over pool surface 20a and encounter and be confined by the opposite lateral side walls 22a.
  • the nozzle opening 16 optionally may have a width dimension that is generally equal to the width dimension between side walls 22a, rather than the nozzle size shown.
  • the width dimension of the amorphous sheet alternately can be defined between refractory side members 23 spaced from vessel walls 22a and immersed in the pool 20 at appropriate locations from the vessel walls 22a to define the desired width of the sheet to be produced.
  • the side members 23 can be adjustably mounted on vessel walls 22a to this end.
  • the thickness of the amorphous sheet S to be produced is controlled by the rate at which the molten metallic material M is discharged from nozzle opening 16 onto pool surface 20a as controlled by the stopper rod 18 as well as the withdrawal rate of solidified amorphous sheet from the pool surface 20a on rollers 40, some or all of which rollers are driven to rotate by one or more conventional roller drive motors 55 (one shown schematically).
  • the primary thickness control employs a laser level control sensor 50 that senses the height (thickness) of the metallic material M (either molten or solidified) on the pool surface 20a and provides feedback signals to stopper rod actuator 21, such as an electrically driven stopper rod actuator.
  • the actuator 21 adjusts the position of stopper rod 18 relative to nozzle opening 16 to control the rate of supply of molten amorphous metallic material to pool 20 in response to the feedback signals representative of the height (thickness) of the molten metallic material M on pool surface 20a to maintain a uniform sheet thickness.
  • the solidified end E of the amorphous sheet S is withdrawn by the rollers 40 at a controlled rate to this end as well.
  • the amorphous sheet S is withdrawn from pool surface 20a in a direction parallel to the pool surface 20a.
  • the solidified end of sheet S is withdrawn through a seal 60 that minimizes leakage of the cooling liquid of pool 20.
  • the length of the amorphous sheet S is controlled by the total amount of molten metallic material M continuously supplied over time from the crucible 10 through the nozzle opening 16 onto the pool surface 20a and withdrawn as a solidified amorphous sheet S.
  • the solidified amorphous sheet can be produced to a selected length that may optionally be coiled.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP03006039A 2002-03-29 2003-03-19 Procédé de fabrication de tôle métallique amorphe Withdrawn EP1348502A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US109043 2002-03-29
US10/109,043 US20030183310A1 (en) 2002-03-29 2002-03-29 Method of making amorphous metallic sheet

Publications (1)

Publication Number Publication Date
EP1348502A1 true EP1348502A1 (fr) 2003-10-01

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EP03006039A Withdrawn EP1348502A1 (fr) 2002-03-29 2003-03-19 Procédé de fabrication de tôle métallique amorphe

Country Status (4)

Country Link
US (1) US20030183310A1 (fr)
EP (1) EP1348502A1 (fr)
JP (1) JP2003290876A (fr)
KR (1) KR20030078716A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007012217A1 (fr) * 2005-07-25 2007-02-01 Zhuwen Ming Procédé lrc et équipement pour un coulage en continu d’une plaque ou bande métallique amorphe, d’ultracristallite et de cristallite
CN101081429B (zh) * 2004-01-13 2012-09-05 明柱文 L、r、c法及设备铸造非晶、超微晶、微晶等金属型材
WO2018082240A1 (fr) * 2016-11-01 2018-05-11 东莞市逸昊金属材料科技有限公司 Système de coulée continue pour lingot d'alliage mère amorphe et son procédé d'utilisation

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8613814B2 (en) 2008-03-21 2013-12-24 California Institute Of Technology Forming of metallic glass by rapid capacitor discharge forging
US8613816B2 (en) 2008-03-21 2013-12-24 California Institute Of Technology Forming of ferromagnetic metallic glass by rapid capacitor discharge
CN101977855B (zh) 2008-03-21 2015-07-29 加利福尼亚技术学院 通过快速电容器放电形成金属玻璃
JP5619987B2 (ja) 2010-04-08 2014-11-05 カリフォルニア インスティチュート オブテクノロジー コンデンサ放電と磁界を使用した電磁式金属ガラス形成
EP2655681A4 (fr) 2010-12-23 2015-03-04 California Inst Of Techn Façonnage d'une feuille en verre métallique par décharge rapide d'un condensateur
CN103443321B (zh) 2011-02-16 2015-09-30 加利福尼亚技术学院 通过快速电容器放电进行的金属玻璃的注射成型
US8485245B1 (en) * 2012-05-16 2013-07-16 Crucible Intellectual Property, Llc Bulk amorphous alloy sheet forming processes
US9393612B2 (en) 2012-11-15 2016-07-19 Glassimetal Technology, Inc. Automated rapid discharge forming of metallic glasses
US9845523B2 (en) 2013-03-15 2017-12-19 Glassimetal Technology, Inc. Methods for shaping high aspect ratio articles from metallic glass alloys using rapid capacitive discharge and metallic glass feedstock for use in such methods
US9963763B2 (en) 2013-09-30 2018-05-08 Glassimetal Technology, Inc. Production of metallic glass by melt deposition
US10273568B2 (en) 2013-09-30 2019-04-30 Glassimetal Technology, Inc. Cellulosic and synthetic polymeric feedstock barrel for use in rapid discharge forming of metallic glasses
CN104630661B (zh) 2013-10-03 2017-04-26 格拉斯金属技术股份有限公司 用于金属玻璃的快速放电形成的涂覆有绝缘膜的进料桶
US10029304B2 (en) 2014-06-18 2018-07-24 Glassimetal Technology, Inc. Rapid discharge heating and forming of metallic glasses using separate heating and forming feedstock chambers
US10022779B2 (en) 2014-07-08 2018-07-17 Glassimetal Technology, Inc. Mechanically tuned rapid discharge forming of metallic glasses
WO2016014993A1 (fr) 2014-07-24 2016-01-28 Glassimetal Technology, Inc. Procédés de formation de couches multiples de verre métallique
US10589349B2 (en) 2015-03-30 2020-03-17 Glassimetal Technology, Inc. Production of metallic glass objects by melt deposition
US10682694B2 (en) 2016-01-14 2020-06-16 Glassimetal Technology, Inc. Feedback-assisted rapid discharge heating and forming of metallic glasses
US10632529B2 (en) 2016-09-06 2020-04-28 Glassimetal Technology, Inc. Durable electrodes for rapid discharge heating and forming of metallic glasses

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1433230A (fr) * 1964-05-14 1966-03-25 Davy & United Eng Co Ltd Procédé de coulée continue d'une bande d'acier
JPS5874249A (ja) * 1981-10-28 1983-05-04 Mitsubishi Heavy Ind Ltd 平板の浮遊式連続製造方法
EP0099599A1 (fr) * 1982-07-15 1984-02-01 Akzo N.V. Procédé de fabrication d'une bande continue de métal amorphe
FR2652019A3 (fr) * 1989-06-19 1991-03-22 Siderurgie Fse Inst Rech Coulee continue directe de toles minces en acier.
EP0679459A1 (fr) * 1992-11-13 1995-11-02 MIURA, Toshihiko Installation a coulee continue pour l'acier

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1433230A (fr) * 1964-05-14 1966-03-25 Davy & United Eng Co Ltd Procédé de coulée continue d'une bande d'acier
JPS5874249A (ja) * 1981-10-28 1983-05-04 Mitsubishi Heavy Ind Ltd 平板の浮遊式連続製造方法
EP0099599A1 (fr) * 1982-07-15 1984-02-01 Akzo N.V. Procédé de fabrication d'une bande continue de métal amorphe
FR2652019A3 (fr) * 1989-06-19 1991-03-22 Siderurgie Fse Inst Rech Coulee continue directe de toles minces en acier.
EP0679459A1 (fr) * 1992-11-13 1995-11-02 MIURA, Toshihiko Installation a coulee continue pour l'acier

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 169 (M - 231) 26 July 1983 (1983-07-26) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101081429B (zh) * 2004-01-13 2012-09-05 明柱文 L、r、c法及设备铸造非晶、超微晶、微晶等金属型材
WO2007012217A1 (fr) * 2005-07-25 2007-02-01 Zhuwen Ming Procédé lrc et équipement pour un coulage en continu d’une plaque ou bande métallique amorphe, d’ultracristallite et de cristallite
US8418746B2 (en) * 2005-07-25 2013-04-16 Zhuwen Ming L, R, C method and equipment for continuous casting amorphous, ultracrystallite and crystallite metallic slab or strip
WO2018082240A1 (fr) * 2016-11-01 2018-05-11 东莞市逸昊金属材料科技有限公司 Système de coulée continue pour lingot d'alliage mère amorphe et son procédé d'utilisation

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JP2003290876A (ja) 2003-10-14
US20030183310A1 (en) 2003-10-02
KR20030078716A (ko) 2003-10-08

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