GB1166789A - Means for Producing Unidirectional Flow of Molten Metal in a Container - Google Patents

Means for Producing Unidirectional Flow of Molten Metal in a Container

Info

Publication number
GB1166789A
GB1166789A GB31749/68A GB3174968A GB1166789A GB 1166789 A GB1166789 A GB 1166789A GB 31749/68 A GB31749/68 A GB 31749/68A GB 3174968 A GB3174968 A GB 3174968A GB 1166789 A GB1166789 A GB 1166789A
Authority
GB
United Kingdom
Prior art keywords
sections
power supply
capacitance
coil
section
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
Application number
GB31749/68A
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.)
Park Ohio Holdings Inc
Original Assignee
Ajax 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
Priority claimed from SE10350/66*[A external-priority patent/SE346043B/xx
Application filed by Ajax Magnethermic Corp filed Critical Ajax Magnethermic Corp
Publication of GB1166789A publication Critical patent/GB1166789A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/067—Control, e.g. of temperature, of power for melting furnaces
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/10—Image acquisition
    • G06V10/12—Details of acquisition arrangements; Constructional details thereof
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing
    • G06V10/24—Aligning, centring, orientation detection or correction of the image
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing
    • G06V10/28—Quantising the image, e.g. histogram thresholding for discrimination between background and foreground patterns
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/02—Stirring of melted material in melting furnaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Character Input (AREA)
  • Furnace Details (AREA)
  • Character Discrimination (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

1,166,789. Electromagnetic mixing apparatus. AJAX MAGNETHERMIC CORP. 3 July, 1968 [15 Feb., 1968], No. 31749/68. Heading B1C. [Also in Divisions H2 and H5] A coreless electric induction furnace 10 has a heating and stirring coil of two or more sections as at A, B, the section A being connected to a single phase power supply 11 and section B to a capacitance 14, 14' and not to the power supply; the capacitance is turnable in resonance with the power supply frequency so that section B has a 90‹ phase lag, producing a travelling magnetic field causing unidirectional flow of the outer parts of the melt (as shown, upward) with a return flow in the centre. Capacitance 12, 12' is provided to improve the power factor. The arrangement may be converted to one more suitable for melting by closing switch 17 when sections A, B are connected in parallel to the power supply. The capacitors 12, 12', 14, 14' may be adjustable manually or automatically; taps may be provided on the coil or a transformer interposed between coil and capacitors. In a modification (Fig. 3, not shown) the coil has four sections A, B, C, D, the power supply being connected to A and C, and the capacitance to B and D in series or parallel. There is then a phase lag of 90‹ between each successive coil section. In a further modification (Fig. 4, not shown) the direction of flow of the melt may be reversed by providing switches (30, 40) to connect sections A, C to the capacitance and sections B, D to the power supply. For melting the sections are connected in two groups A, C and B, D in parallel to the power supply, the sections in each group being in series and switches (31, 32) being provided to reverse the connections to C, D so that all four sections are in phase. The invention may be applied to the pumping of molten metal in a pipe-line, the metal in the centre of the pipe being carried along with the flow at the periphery.
GB31749/68A 1966-12-21 1968-07-03 Means for Producing Unidirectional Flow of Molten Metal in a Container Expired GB1166789A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE10350/66*[A SE346043B (en) 1966-12-21 1966-12-21
US70584868A 1968-02-15 1968-02-15

Publications (1)

Publication Number Publication Date
GB1166789A true GB1166789A (en) 1969-10-08

Family

ID=26655765

Family Applications (2)

Application Number Title Priority Date Filing Date
GB34938/67A Expired GB1166759A (en) 1966-12-21 1967-07-28 Character Readers
GB31749/68A Expired GB1166789A (en) 1966-12-21 1968-07-03 Means for Producing Unidirectional Flow of Molten Metal in a Container

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB34938/67A Expired GB1166759A (en) 1966-12-21 1967-07-28 Character Readers

Country Status (6)

Country Link
US (1) US3478156A (en)
JP (1) JPS49305B1 (en)
DE (1) DE1549673A1 (en)
DK (1) DK119181B (en)
GB (2) GB1166759A (en)
NL (1) NL6710521A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2399180A1 (en) * 1977-07-27 1979-02-23 Elphiac Sa CREUSET INDUCTION OVEN
GB2114907A (en) * 1982-02-12 1983-09-01 British Steel Corp Electro-magnetic stirring
GB2133225A (en) * 1982-12-31 1984-07-18 Zeiss Jena Veb Carl Electromagnetically operated conveying device
EP0279101A2 (en) * 1987-02-14 1988-08-24 Inductotherm Europe Limited Induction melting
WO1995022238A1 (en) * 1994-02-11 1995-08-17 Otto Junker Gmbh Process for operating coreless induction melting and/or holding furnaces and electric switching unit suitable therefor
WO1995026619A1 (en) * 1994-03-25 1995-10-05 Otto Junker Gmbh Crucible induction furnace with at least two coils connected in parallel to a resonant frequency converter
EP0857932A1 (en) * 1997-01-09 1998-08-12 Doryokuro Kakunenryo Kaihatsu Jigyodan Apparatus for discharging molten matter from cold crucible induction melting furnace

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3878073A (en) * 1972-07-14 1975-04-15 Univ Ohio State Res Found Oxygen exchange with liquid metals
US3887721A (en) * 1972-12-20 1975-06-03 Armco Steel Corp Metallic coating method
FR2399299A1 (en) * 1977-08-05 1979-03-02 Tocco Stel METHOD AND DEVICE FOR BUTT WELDING BY INDUCTION OF METAL PARTS, ESPECIALLY OF IRREGULAR SECTION
US4392040A (en) * 1981-01-09 1983-07-05 Rand Robert W Induction heating apparatus for use in causing necrosis of neoplasm
SE457990B (en) * 1986-04-16 1989-02-13 Asea Ab DEVICE FOR MANUFACTURING AND MOVING OF MOLD STEEL
DE3703108A1 (en) * 1987-02-03 1988-08-11 Junker Gmbh O METHOD FOR OPERATING A HOT METALIZING OVEN
GB2232832B (en) * 1989-06-14 1993-11-10 Inductotherm Europ Induction Melting
US5250777A (en) * 1990-04-02 1993-10-05 Inductotherm Corp. Method and apparatus for variable phase induction heating and stirring
JP3047056B2 (en) * 1992-06-02 2000-05-29 科学技術庁金属材料技術研究所長 Floating melting apparatus and its operation method
FR2790354B1 (en) * 1999-02-26 2001-06-15 Centre Nat Rech Scient ELECTROMAGNETIC BREWING OF A FUSED METAL
JP2004530275A (en) * 2001-05-22 2004-09-30 インダクトサーム・コーポレイション Furnace with induction coil at bottom
PL1718910T3 (en) * 2004-01-17 2017-12-29 Consarc Corporation Cold crucible induction furnace with eddy current damping
RU2375849C2 (en) * 2004-12-08 2009-12-10 Индактотерм Корпорейшн Electric induction control method
US9370049B2 (en) * 2004-12-08 2016-06-14 Inductotherm Corp. Electric induction heating, melting and stirring of materials non-electrically conductive in the solid state
JP2007167857A (en) * 2005-12-19 2007-07-05 Yamaichi Kinzoku Kk Method for treating molten metal
JP2008241197A (en) * 2007-03-28 2008-10-09 Fuji Electric Systems Co Ltd Electric heating device
JP5579610B2 (en) 2007-10-12 2014-08-27 エイジャックス トッコ マグネサーミック コーポレーション Semi-liquid metal processing / detection device, and processing / detection method using the device
US8532158B2 (en) * 2007-11-17 2013-09-10 Inductotherm Corp. Melting and mixing of materials in a crucible by electric induction heel process
JP5474700B2 (en) * 2010-08-03 2014-04-16 一般財団法人電力中央研究所 Induction heating melting furnace
US9574826B2 (en) 2012-09-27 2017-02-21 Ajax Tocco Magnethermic Corporation Crucible and dual frequency control method for semi-liquid metal processing

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA668542A (en) * 1963-08-13 Herschmann Heinrich Induction heating apparatus
US1822539A (en) * 1929-03-09 1931-09-08 Ajax Electrothermic Corp Induction electric furnace
US2052649A (en) * 1932-09-10 1936-09-01 Nat Aniline & Chem Co Inc Electrically heated apparatus and method of operating
US2803689A (en) * 1956-04-02 1957-08-20 Nat Res Corp Electric induction furnace

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2399180A1 (en) * 1977-07-27 1979-02-23 Elphiac Sa CREUSET INDUCTION OVEN
GB2114907A (en) * 1982-02-12 1983-09-01 British Steel Corp Electro-magnetic stirring
GB2133225A (en) * 1982-12-31 1984-07-18 Zeiss Jena Veb Carl Electromagnetically operated conveying device
EP0279101A2 (en) * 1987-02-14 1988-08-24 Inductotherm Europe Limited Induction melting
EP0279101A3 (en) * 1987-02-14 1989-07-26 Inductotherm Europe Limited Induction melting
WO1995022238A1 (en) * 1994-02-11 1995-08-17 Otto Junker Gmbh Process for operating coreless induction melting and/or holding furnaces and electric switching unit suitable therefor
WO1995026619A1 (en) * 1994-03-25 1995-10-05 Otto Junker Gmbh Crucible induction furnace with at least two coils connected in parallel to a resonant frequency converter
EP0857932A1 (en) * 1997-01-09 1998-08-12 Doryokuro Kakunenryo Kaihatsu Jigyodan Apparatus for discharging molten matter from cold crucible induction melting furnace
US5901169A (en) * 1997-01-09 1999-05-04 Japan Nuclear Cycle Development Institute Apparatus for discharging molten matter from cold crucible induction melting furnace

Also Published As

Publication number Publication date
GB1166759A (en) 1969-10-08
US3478156A (en) 1969-11-11
NL6710521A (en) 1968-01-30
JPS49305B1 (en) 1974-01-07
DE1800431B2 (en) 1971-06-03
DE1800431A1 (en) 1971-01-21
DK119181B (en) 1970-11-23
DE1549673A1 (en) 1971-04-08

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee