Beijing Zhong Ke San Huan Hi-tech Co., Ltd.

Sanvac (beijing) Magnetics Co., Ltd.

Beijing Zhong Ke San Huan High-tech Co., Ltd.

Jingdong Jia

Boping Hu

Xiaolei Rao

Jin Zhang

Guoan Chen

E Niu

Yugang Zhao

Zhian Chen

Guoshun Jin

Yizhong Wang

A sintered neodymium-iron-boron magnet, the main components thereof comprising rare-earth elements R, additional elements T, iron Fe and boron B, and having a rare-earth-enriched phase and a main phase of a Nd2Fe14B crystal structure. The sum of the numerical values of the maximum magnetic energy product (BH)max in units of MGOe and the intrinsic coercive force Hcj in units of kOe is not less than 70. The manufacturing method of the sintered neodymium-iron-boron magnet comprises alloy smelting, powder making, powder mixing, press forming, sintering and heat treatment procedures. By controlling the component formulation and optimizing the process conditions, the sintered neodymium-iron-boron magnet is enabled to simultaneously have a high maximum magnetic energy product and a high intrinsic coercive force.

Nd&#x2014;Fe&#x2014;B sintered magnet and methods for manufacturing the same

Apparatus for preparing alloy sheet, comprising a container for melted alloy liquid positioned in an inductive heating coil; a liquid flow stabilization outfit comprising a barrel container with open bottom and a base board arranged below the open bottom, and the barrel container's upper part being positioned below the mouth of the container for melted alloy liquid; a quenching wheel positioned below the melted alloy liquid flown from the liquid flow stabilization outfit's base board, which carries the melted alloy liquid and spins it into strips, to make the strips become alloy sheets after collision; a transferring outfit positioned below the wheel for further cooling and transferring of the alloy sheets, wherein the quenching wheel is equipped with a means for differentiating cooling rate for various alloy sheets. The magnetic material made of these alloy sheets is good in orientation, easy for post-sinter processing, and suitable for mass production.

Apparatus for preparing alloy sheet

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Beijing, China

Jingdong Jia