The manufacturing method of magnet alloy powder and its magnet

The manufacturing method of magnet alloy powder and its magnet

  • CN 103,831,435 B
  • Filed: 01/27/2014
  • Issued: 05/18/2018
  • Est. Priority Date: 01/27/2014
  • Status: Active Grant
First Claim
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1. the manufacturing method of magnet alloy powder, successively including casting alloy, hydrogen crushing and air-flow crushing, it is characterised in that:

  • To after hydrogen crushing, the alloy powder before air-flow crushing sieve, remove bulky grain, the mesh number of screening for 10 mesh withBelow upper, 100 mesh, air-flow crushing is carried out by jet mill crusher is sent by the alloy powder of screening mechanism;

    The casting is closedGold is to cast the molten liquid of the raw alloy of NdFeB rear-earth magnet with strip casting method, and it is 0.2 millimeter that average thickness, which is made,~0.4 millimeter of quick cooling alloy;

    The hydrogen crushing is in more than 0.01MPa, the Hydrogen Vapor Pressure of below 1MPa by quick cooling alloyIt is lower keep 0.5~24 it is small when alloy powder is made;

    The air-flow crushing is the alloy powder to sieving using jet mill crusherIt crushes again.

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