Special-shaped magnet processing technology

Abstract

The invention provides a special-shaped magnet processing technology, and relates to the technical field of magnet processing, and the special-shaped magnet processing technology comprises the following steps: S1, preparing a proper amount of neodymium, iron, boron, dysprosium, niobium, aluminum and a sintering agent in proportion; according to the preparation method, neodymium, iron, boron, dysprosium, niobium and aluminum are uniformly dispersed and subjected to dispersion smelting to form a metal block, then the metal block is crushed, a sintering agent is mixed into metal particles, the mixed material is poured into a special-shaped mold, compression molding is carried out to obtain a pressed blank, then sintering is carried out, heat treatment is carried out after sintering, and magnetizing is carried out after treatment. In the sintering process, the sintering agent can assist in blank forming, the sintering temperature is reduced, the sintering time is shortened, so that the blank can be rapidly formed, energy consumption is effectively reduced, the occupied time of a sintering furnace is shortened, and the machining efficiency of the finished special-shaped magnet is improved. And a better production and processing effect is achieved.

Description

technical field [0001] The invention relates to the technical field of magnet processing, in particular to a processing technology for special-shaped magnets. Background technique [0002] In the process of magnet processing, it is often necessary to suppress the metal particles, and then sinter them to form a blank for subsequent magnet processing. In the process of processing special-shaped magnets, because the shapes of special-shaped magnets are often different, during the processing During the sintering process, in order to make the special-shaped magnets sintered into shape, a higher sintering temperature and a longer sintering time are often required. Not only the energy consumption is high, but also the sintering furnace needs to be occupied for a long time, which affects the processing efficiency of the special-shaped magnets. To achieve better production and processing results. [0003] Chinese Patent No. CN113035482A discloses a double-alloy NdFeB magnet and its ...

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Problems solved by technology

[0002] In the process of magnet processing, it is often necessary to suppress the metal particles, and then sinter them to form a blank for subsequent magnet processing. In the process of processing special-shaped magnets, because the shapes of special-shaped magnets are often different, during the processing During the sintering process, in order to make the special-shaped magnets sintered into shape, a higher sintering temperature and a longer sintering time are often required. Not only the energy consumption is high, but also the sintering furnace needs to be occupied for a long time, which affects the processing efficiency of the special-shaped magnets. Achieve better production and processing effects

[0003] Chinese Patent No. CN113035482A discloses a double-alloy NdFeB magnet and its preparation method. The main phase alloy and the auxiliary phase alloy are smelted and cast into ingots respectively, and hydrogen explosion is carried out respectively, and then crushed and sieved respectively. Mix evenly to obtain alloy powder; shape the alloy powder in a magnetic field under the protection of nitrogen to obtain a compact; after the compact is sintered and tempered, it is cooled to obtain a double-alloy NdFeB magnet; after the compact is sintered and tempered, Cooling to obtain double-alloy NdFeB magnets; although the double-alloy NdFeB magnets of the present application have the advantages of reducing production costs while ensuring the magnetic properties of the magnets, in the process of processing, direct sintering is adopted, and it takes a long time and Higher temperature, resulting in lower processing efficiency and higher energy consumption, needs to be improved

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