Us6461565b2 Method Of Pressing Rare Earth Alloy Magnetic

Us6461565b2 Method Of Pressing Rare Earth Alloy Magnetic, Us6461565b2 method of pressing rare earth alloy magnetic powder google patents a green compact of a rare earth alloy magnetic powder is made by pressing the powder the powder is pressed Us6461565b2 Method Of Pressing Rare Earth Alloy Magnetic

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  • Method Of Pressing Rare Earth Alloy Magnetic Powder

    Oct 08 2002 a method of forming a green compact of a rare earth alloy magnetic powder comprising the steps of providing a rare earth alloy powder providing a controlled environment having a temperature ranging from 5 c to 30 c and a relative humidity ranging from 40 to 65 and a dew point of at least 6 c less than the temperature and pressing the rare earth alloy powder within the

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  • Us8846136b2 Production Method Of Rare Earth Magnet

    Means for resolution a production method of a rare earth magnet comprising a step of bringing a compact obtained by applying hot working to impart anisotropy to a sintered body having a rare earth magnet composition into contact with a lowmeltingpoint alloy melt containing a rare earth element

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  • Us6461565b2 Method Of Pressing Rare Earth Alloy Magnetic

    Us6461565b2 method of pressing rare earth alloy magnetic powder google patents a green compact of a rare earth alloy magnetic powder is made by pressing the powder the powder is pressed

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  • Us6599468b2 Powder Compacting Apparatus And Method

    The present invention provides a powder compacting apparatus including a die having a through hole forming a cavity a first punch and a second punch for pressing a rareearth alloy magnetic powder filled in the cavity and a magnetic field generator for applying an orientation magnetic field parallel to a pressing direction through the rareearth alloy magnetic powder in the cavity wherein at least one of

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  • Us9242296b2 Rare Earth Magnet Material And Method For

    A method for producing a rare earth magnet material which allows efficient dy or the like diffusion into an inside thereof this method includes a preparation step of preparing a powder mixture of magnet powder including one or more rare earth elements including neodymium boron and the remainder being iron and neodymium fluoride powder a heating step of heating a compact of the powder

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  • Kr101711859b1 Method For Preparing Rare Earth

    The present invention relates to a method for preparing a rare earth permanent magnet the method for preparing a rare earth permanent magnet comprises a step of preparing a magnet raw material alloy a step of crushing the alloy a step of pulverizing the crushed alloy powder and a step of sintering the finely pulverized alloy powder

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  • Uspto Rules In Favor Of Chinese Rareearth Magnet Alliance

    Uspto rules in favor of chinese rareearth magnet alliance alston bird client alliance of rareearth permanent magnet industry recently achieved a comprehensive patent victory against hitachi metals ltd at the united states patent and trademark office uspto

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  • Trials Paper 41 Before The Patent Trial

    Magnetic powder generally relates to a method of making a green compact of a rare earth alloy magnetic powder ex 1001 16 7 the 565 patent explains that if a magnetic powder of a rapidly solidified alloy eg a strip cast alloy typically is compacted by a known pressing technique the aspressed green compact has a potential to generate sufficient heat for

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  • Rare Earth Alloys An Overview Sciencedirect Topics

    Rare earth alloys magnets are characterized by a high coercive force h c and residual induction b rthese alloys are processed to provide the maximum energy product which is the numerical value of energy product h c b r in the second quadrant top left of the hysteresis curve fig 2425the energy product is measured by approximation of the largest rectangle to the demagnetization

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  • Types Of Rare Earth Magnets Part 1 Magnet Applications

    Fully dense rare earth magnets by powder metallurgical processing by dr john ormerod technical adviser magnet applications the powder metallurgical method is the most common method of manufacturing fully dense ndfeb and smcobased magnets below is an outline outline that is typical for ndfeb magnet production process click image to enlarge

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