GB1456441A - Apparatus for and method of treating the surfaces of objects with particles moved by magnetic force - Google Patents

Apparatus for and method of treating the surfaces of objects with particles moved by magnetic force

Info

Publication number
GB1456441A
GB1456441A GB757074A GB757074A GB1456441A GB 1456441 A GB1456441 A GB 1456441A GB 757074 A GB757074 A GB 757074A GB 757074 A GB757074 A GB 757074A GB 1456441 A GB1456441 A GB 1456441A
Authority
GB
United Kingdom
Prior art keywords
particles
coils
container
rotation
magnetic
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
GB757074A
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of GB1456441A publication Critical patent/GB1456441A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/10—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work
    • B24B31/102—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work using an alternating magnetic field

Abstract

1456441 Ball mills MINNESOTA MINING & MFG CO 19 Feb 1974 [20 Feb 1973] 7570/74 Heading B2A [Also in Division B3] A method of treating objects with partides moved by magnetic force comprises confining magnetic particles to a predetermined area, generating a rotating magnetic field whose axis of rotation is within the predetermined area, the field being of sufficient intensity to cause rotation of the particles on their axes and also to cause thetir rotation in an orbital path about the axis of rotation of the rotating field, and placing the object to be treated within the path of the particles for a period of time sufficient to cause surface treatment thereof. A device for producing the magnetic field may consist of at least four overlapping coils of insulated wire arranged in a circular pattern of opposed pairs 30a, 30b, 31a, 31b energised by two or more out of phase sources of alternating current. The coils may be wound on a slotted annulus or may be formed by the stator of an AC motor. A container 32 is disposed within the coils for retaining the magnetic particles. Alternatively, the coils may be disposed within a cylindrical container, the particles being exterior of the container and in the space between it and a larger coaxial container. The particles may be moved over a flat surface by forming the coils in slots in the end of a cylinder. In another arrangement, the rotating magnetic field is produced by rotating permanent magnets around or within a container. The particles are individual permanent magnets and may be of gamma iron oxide, hard barium ferrite, aluminium-nickel-cobalt alloys, or mixtures thereof, and have a size within the range 0.01 to 5 cm in diameter or larger, according to whether cleaning, grinding, polishing, or burnishing is to be effected. The particles may have an inert coating or an abrasive coating and be used in air or a liquid, such as water, kerosene, carbon tetrachloride, acetone, benzene, toluene, perchloroethylene. The liquid may contain abrasive particles, bactericides, pH regulators, alkaline builders, buffing agents, softeners or surfactants. The abrasive particles may be in the form of glass spheres. The magnetic particles have a magnetization of about 50 gauss/gm and a coercivity of at least 100 oerstads. An apparatus may be used for ball milling.
GB757074A 1973-02-20 1974-02-19 Apparatus for and method of treating the surfaces of objects with particles moved by magnetic force Expired GB1456441A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00334000A US3848363A (en) 1973-02-20 1973-02-20 Apparatus for treating objects with particles moved by magnetic force

Publications (1)

Publication Number Publication Date
GB1456441A true GB1456441A (en) 1976-11-24

Family

ID=23305120

Family Applications (1)

Application Number Title Priority Date Filing Date
GB757074A Expired GB1456441A (en) 1973-02-20 1974-02-19 Apparatus for and method of treating the surfaces of objects with particles moved by magnetic force

Country Status (7)

Country Link
US (1) US3848363A (en)
JP (1) JPS532518B2 (en)
CA (1) CA1002265A (en)
DE (1) DE2408359C3 (en)
FR (1) FR2218165B1 (en)
GB (1) GB1456441A (en)
IT (1) IT1008866B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
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US4632315A (en) * 1981-10-30 1986-12-30 Fuji Electric Co., Ltd. Method and apparatus for electromagnetically crushing, mixing and stirring substances by employing a mechanical driver
CN112692716A (en) * 2021-01-26 2021-04-23 山东理工大学 Inner surface magnetic field auxiliary finishing device and method based on controllable magnetic field
CN114161307A (en) * 2021-11-02 2022-03-11 世科工业设计沧州有限公司 Automatic cleaning equipment for surface of aluminum workpiece produced in workshop
CN114986376A (en) * 2022-06-16 2022-09-02 山东理工大学 Magnetic needle magnetic grinding machine

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US4024295A (en) * 1975-04-07 1977-05-17 Minnesota Mining And Manufacturing Company Coating process utilizing propelled particles
US4000062A (en) * 1975-04-21 1976-12-28 Minnesota Mining And Manufacturing Company Magnetic particle separator
US4175930A (en) * 1978-04-27 1979-11-27 Baubel Alexandr A Method for finishing surfaces of non-magnetic articles by means of ferromagnetic abrasive powder in magnetic field
US4199265A (en) * 1978-10-30 1980-04-22 American Hospital Supply Corporation Motorless magnetically coupled stirrer
NL8020521A (en) * 1980-11-28 1982-10-01 Vladimir Alexeevich Vasiliev L METHOD FOR DEBURRING PARTS AND DEVICE FOR EXECUTION THEREOF
JPS5876151A (en) * 1981-10-30 1983-05-09 富士電機株式会社 Operation of electromagnetic type apparatus for crushing, mixing and stirring treatments
US4601431A (en) * 1982-09-13 1986-07-22 Fuji Electric Company, Ltd. Traveling magnetic field type crusher
JPS59161261A (en) * 1983-03-04 1984-09-12 Amada Co Ltd Barrel abrasion device
US5206479A (en) * 1990-05-04 1993-04-27 Cem Corporation Microwave heating system
EP0478805B1 (en) * 1990-06-27 1994-03-09 Priority Co., Ltd. Magnetically-polishing machine and process
US5449313A (en) * 1992-04-14 1995-09-12 Byelocorp Scientific, Inc. Magnetorheological polishing devices and methods
US6503414B1 (en) 1992-04-14 2003-01-07 Byelocorp Scientific, Inc. Magnetorheological polishing devices and methods
WO1994004313A1 (en) * 1992-08-14 1994-03-03 Byelocorp Scientific, Inc. Magnetorheological polishing devices and methods
DE69430370T2 (en) * 1993-06-04 2002-12-12 Byelocorp Scient Inc MAGNETORHEOLOGICAL POLISHING DEVICES AND METHOD
MX9801197A (en) * 1995-08-24 1998-04-30 Minnesota Mining & Mfg Process for making particle-coated solid substrates.
US5662516A (en) * 1995-09-27 1997-09-02 You; Jae Hyun Magnetic barrel tumbler
US5795212A (en) * 1995-10-16 1998-08-18 Byelocorp Scientific, Inc. Deterministic magnetorheological finishing
US5817374A (en) * 1996-05-31 1998-10-06 Electrox Corporation Process for patterning powders into thick layers
US5962082A (en) * 1997-08-19 1999-10-05 Aveka, Inc. Process for applying liquid coatings to solid particulate substrates
US6063616A (en) * 1997-11-04 2000-05-16 Cornell Research Foundation, Inc. Matrix mill for DNA extraction
US6776174B2 (en) * 1998-08-21 2004-08-17 Paul E. Nisson Apparatus for washing magnetic particles
JP2001259539A (en) * 2000-03-24 2001-09-25 Ricoh Co Ltd Cleaning system and cleaning method
WO2004000446A2 (en) * 2002-06-20 2003-12-31 Arizona Board Of Regents Method and arrangement of rotating magnetically inducible particles
AU2003263375A1 (en) * 2002-08-30 2004-03-19 Janos Kodacsy Apparatus for cleaning, deburring and polishing parts in magnetic field
US7152611B2 (en) * 2002-12-30 2006-12-26 International Tape Partners, Llc Coated multifilament dental devices overcoated with imbedded particulate
US6962433B2 (en) * 2003-01-30 2005-11-08 Scientific Industries, Inc. Magnetic stirring apparatus having low rotational speeds
US20060086834A1 (en) * 2003-07-29 2006-04-27 Robert Pfeffer System and method for nanoparticle and nanoagglomerate fluidization
US7183030B2 (en) 2004-05-07 2007-02-27 Samsung Electronics Company Negatively charged coated electrographic toner particles and process
US20050250028A1 (en) * 2004-05-07 2005-11-10 Qian Julie Y Positively charged coated electrographic toner particles and process
WO2006119301A2 (en) * 2005-05-02 2006-11-09 New Jersey Institute Of Technology Fractal structured nanoagglomerates as filter media
US8011424B2 (en) * 2005-06-09 2011-09-06 The United States Of America, As Represented By The Secretary Of The Navy System and method for convective heat transfer utilizing a particulate solution in a time varying field
EP1762907B1 (en) * 2005-09-13 2010-06-30 Ricoh Company, Ltd. Development roller and surface treatment device
US20070207272A1 (en) * 2006-03-03 2007-09-06 Puri Ishwar K Method and apparatus for magnetic mixing in micron size droplets
US7899374B2 (en) * 2007-01-11 2011-03-01 Ricoh Company, Ltd. Magnetic particle carrying device, and developing unit, process cartridge, and image forming apparatus using the same, and surface treatment method of the same
US20090188520A1 (en) * 2008-01-30 2009-07-30 Whitehill Oral Technologies, Inc. Coated dental devices with ablative abrasives
US8202411B2 (en) * 2008-03-19 2012-06-19 Eltron Research & Development, Inc. Electrowinning apparatus and process
CA2726813A1 (en) * 2008-05-30 2009-12-03 Qlt Plug Delivery, Inc. Surface treated implantable articles and related methods
CH700770A2 (en) * 2009-04-15 2010-10-15 Philippe Saint Ger Ag A method for supporting and / or intensifying a physical and / or chemical reaction and a reaction device for performing the method.
US9333471B2 (en) 2012-04-11 2016-05-10 STAT—Diagnostica & Innovation, S.L. Fluidically integrated magnetic bead beater
US20130273816A1 (en) * 2012-04-13 2013-10-17 Nano And Advanced Materials Institute Limited Automatic polishing device for surface finishing of complex-curved-profile parts
PL401326A1 (en) 2012-10-22 2014-04-28 Presto Spółka Z Ograniczoną Odpowiedzialnością Magnetic mill
PL401325A1 (en) 2012-10-22 2014-04-28 Presto Spółka Z Ograniczoną Odpowiedzialnością Magnetic mill
CN104903243A (en) * 2012-11-14 2015-09-09 南非大学 Method and apparatus for treating a fluid
US10639746B1 (en) 2014-06-20 2020-05-05 Apple Inc. Ceramic-based components having laser-etched markings
US20150375359A1 (en) * 2014-06-30 2015-12-31 General Electric Company Component surface finishing systems and methods
US9713865B2 (en) * 2015-06-02 2017-07-25 Apple Inc. Electromechanical surface texturing
US10144107B2 (en) * 2015-09-30 2018-12-04 Apple Inc. Ultrasonic polishing systems and methods of polishing brittle components for electronic devices
CN112783264A (en) 2019-11-11 2021-05-11 苹果公司 Biometric key including textured ceramic cover
US11113494B2 (en) 2019-11-11 2021-09-07 Apple Inc. Biometric key including a textured ceramic cover
EP4065260A4 (en) * 2019-11-27 2023-08-02 JBS Science Inc. Method and apparatus for mixing magnetic particles in liquid medium
CN111347295A (en) * 2020-03-27 2020-06-30 台州学院 Surface polishing device for inner container of pressure cooker

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735232A (en) * 1956-02-21 simjian
US2787854A (en) * 1955-11-18 1957-04-09 Reflectone Corp Method of treating an object
BE545179A (en) * 1956-01-03

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4632315A (en) * 1981-10-30 1986-12-30 Fuji Electric Co., Ltd. Method and apparatus for electromagnetically crushing, mixing and stirring substances by employing a mechanical driver
CN112692716A (en) * 2021-01-26 2021-04-23 山东理工大学 Inner surface magnetic field auxiliary finishing device and method based on controllable magnetic field
CN114161307A (en) * 2021-11-02 2022-03-11 世科工业设计沧州有限公司 Automatic cleaning equipment for surface of aluminum workpiece produced in workshop
CN114986376A (en) * 2022-06-16 2022-09-02 山东理工大学 Magnetic needle magnetic grinding machine

Also Published As

Publication number Publication date
US3848363A (en) 1974-11-19
DE2408359B2 (en) 1977-10-20
FR2218165B1 (en) 1977-03-04
CA1002265A (en) 1976-12-28
DE2408359A1 (en) 1974-09-05
DE2408359C3 (en) 1978-06-22
JPS49114193A (en) 1974-10-31
JPS532518B2 (en) 1978-01-28
FR2218165A1 (en) 1974-09-13
IT1008866B (en) 1976-11-30

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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