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WO2007015956A3 - Direct casting utilizing stack filtration - Google Patents

Direct casting utilizing stack filtration Download PDF

Info

Publication number
WO2007015956A3
WO2007015956A3 PCT/US2006/028308 US2006028308W WO2007015956A3 WO 2007015956 A3 WO2007015956 A3 WO 2007015956A3 US 2006028308 W US2006028308 W US 2006028308W WO 2007015956 A3 WO2007015956 A3 WO 2007015956A3
Authority
WO
WIPO (PCT)
Prior art keywords
filters
molten material
pouring
heated
vessel
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
Application number
PCT/US2006/028308
Other languages
French (fr)
Other versions
WO2007015956A2 (en
Inventor
Thomas J Todaro
David O Warren
David A Lazor
Karl J Schwenk
Michael W Kohler
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.)
Ajax Tocco Magnethermic Corp
Original Assignee
Ajax Tocco Magnethermic 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 Ajax Tocco Magnethermic Corp filed Critical Ajax Tocco Magnethermic Corp
Priority to EP06788060A priority Critical patent/EP1910580A2/en
Publication of WO2007015956A2 publication Critical patent/WO2007015956A2/en
Publication of WO2007015956A3 publication Critical patent/WO2007015956A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/02—Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic waves
    • C22B9/023—By filtering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
    • B22D43/001—Retaining slag during pouring molten metal
    • B22D43/004—Retaining slag during pouring molten metal by using filtering means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

A casting system includes a filtration assembly including a filter vessel housing spaced filters pre-heated to a temperature approximating a pouring temperature of molten material to be filtered to prevent breakage of the filter due to thermal shock from contact with the molten material. Preferably, an induction coil is used to inductively heat a susceptor adjacent the filter vessel or inductively heat filters which themselves serve as susceptors. Typically, the filter vessel is disposed below a pouring vessel and above a mold, pour cup and any sprue system used and is heated independently from the same. The filters are heated during pouring to facilitate flow of the molten material therethrough whereby very fine filters may be used. Spacing of the filters enhances flow control and allows a head of molten material to form whereby dross floats to the top of the head to prevent its entry into the mold.
PCT/US2006/028308 2005-07-29 2006-07-21 Direct casting utilizing stack filtration Ceased WO2007015956A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06788060A EP1910580A2 (en) 2005-07-29 2006-07-21 Direct casting utilizing stack filtration

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US70383105P 2005-07-29 2005-07-29
US60/703,831 2005-07-29
US11/359,032 2006-02-21
US11/359,032 US20070022841A1 (en) 2005-07-29 2006-02-21 Direct casting utilizing stack filtration

Publications (2)

Publication Number Publication Date
WO2007015956A2 WO2007015956A2 (en) 2007-02-08
WO2007015956A3 true WO2007015956A3 (en) 2007-09-20

Family

ID=37692843

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/028308 Ceased WO2007015956A2 (en) 2005-07-29 2006-07-21 Direct casting utilizing stack filtration

Country Status (3)

Country Link
US (1) US20070022841A1 (en)
EP (1) EP1910580A2 (en)
WO (1) WO2007015956A2 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1320139C (en) * 2005-07-28 2007-06-06 上海交通大学 Electromagnetism method in multiple stages for refining molten metal
CN102615248A (en) * 2012-04-26 2012-08-01 苏州科羽电子技术服务有限公司 Production process for casting
KR101808103B1 (en) * 2012-04-27 2018-01-18 노르웨이전 유니버시티 오브 사이언스 앤드 테크놀러지(엔티엔유) Apparatus and method for priming a molten metal filter
DE112017000047B4 (en) * 2016-09-16 2019-04-18 Technische Universität Bergakademie Freiberg Process for the purification of molten metal in an induction furnace
JP6471815B1 (en) * 2018-01-25 2019-02-20 不二製油株式会社 Strainer equipment
US20190252509A1 (en) * 2018-02-09 2019-08-15 Semiconductor Components Industries, Llc Electronic device including a conductive layer including a ta-si compound and a process of forming the same
US12059643B2 (en) * 2018-09-21 2024-08-13 Pyrotek, Inc. Electromagnetic priming of molten metal filters
CN113770342A (en) * 2021-08-12 2021-12-10 芜湖泓鹄材料技术有限公司 Molten iron filtering device for pouring
CN114082920A (en) * 2021-11-17 2022-02-25 江西中鼎金属工艺有限公司 Casting and melting forming equipment for metal artware
CN114941943A (en) * 2022-05-27 2022-08-26 张子豪 Vacuum induction smelting furnace for copper alloy

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4426287A (en) * 1980-12-27 1984-01-17 Bridgestone Tire Co., Ltd. Molten metal filtering device
US4789140A (en) * 1982-06-11 1988-12-06 Howmet Turbine Components Corporation Ceramic porous bodies suitable for use with superalloys
US6203593B1 (en) * 1997-11-18 2001-03-20 Bridgestone Corporation Ceramic filter and method of filtrating molten metal using the same
US20030150294A1 (en) * 2002-01-25 2003-08-14 Njall Stefansson Filters for filtering molten metals and alloys field

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4834876A (en) * 1988-03-14 1989-05-30 Walker Nicholas G Filtration assembly having integral heating means for maintaining the metallic material being filtered in the molten state
US4999101A (en) * 1989-11-02 1991-03-12 Alusuisse Lonza-Services Ltd Preheat indicator
US5673902A (en) * 1996-02-01 1997-10-07 Selee Corporation Dual stage ceramic foam filtration system and method
US6453979B1 (en) * 1998-05-14 2002-09-24 Howmet Research Corporation Investment casting using melt reservoir loop

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4426287A (en) * 1980-12-27 1984-01-17 Bridgestone Tire Co., Ltd. Molten metal filtering device
US4789140A (en) * 1982-06-11 1988-12-06 Howmet Turbine Components Corporation Ceramic porous bodies suitable for use with superalloys
US6203593B1 (en) * 1997-11-18 2001-03-20 Bridgestone Corporation Ceramic filter and method of filtrating molten metal using the same
US20030150294A1 (en) * 2002-01-25 2003-08-14 Njall Stefansson Filters for filtering molten metals and alloys field

Also Published As

Publication number Publication date
EP1910580A2 (en) 2008-04-16
US20070022841A1 (en) 2007-02-01
WO2007015956A2 (en) 2007-02-08

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