a hfo containing 2 The manufacturing method of the ferromagnetic core
A manufacturing method and ferromagnetic core technology, applied in the manufacture of inductors/transformers/magnets, the magnetism of inorganic materials, electrical components, etc., can solve the problems of unsuitable cutting, low mechanical strength of materials, low saturation magnetic induction intensity, etc., and achieve low porosity , small deformation, slight deformation effect
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[0017] Example 1: Containing HfO 2 The manufacture method of the ferromagnetic core, comprises the following steps:
[0018] (1) The ratio of raw materials is calculated in parts by weight (catties), reduced iron powder 71, iron oxide powder 16, MnO 4.4, ZnO3.9, modified tree ash 2, nano-carbon 0.6, HfO 2 2. SiO2 2 2.6, V 2 o 5 3.6, CuO 2.5, the modified tree ash is prepared by the following method:
[0019] a. Soak tree ashes with 10% sodium hydroxide solution for 4-5 hours;
[0020] b. Soak in 10% hydrochloric acid solution for 4-5 hours;
[0021] c. Wash with deionized water several times until the tree ash is neutral, then dry;
[0022] d. Grinding to 0.8-1.0 μm powder to obtain modified tree ash;
[0023] (2) Pre-combustion: Add water and dispersant to the raw materials except modified tree ash and nano-carbon for a ball mill for 3-4 hours, then spray dry, and pre-calcine. 3-5 hours;
[0024] (3) Secondary ball milling: add water and dispersant to the primary ...
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