Flexible sintering method of rare earth permanent magnet alloy and sintering equipment thereof

摘要

The rare earth permanent magnet alloy flexible sintering method and the sintering equipment perform the following processing steps. 1. The fine powder of the rare earth permanent magnet alloy is weighed in a compressor in an inert gas, placed in a mold, made into a semi-finished product by orientation molding, and this semi-finished product is placed in a material container. 2. After the air between the second transport sealed box and the 1 # isolation valve of the glove box is exchanged with an inert gas, the two contacted valves are opened and the bottom roller transport device in the second transport sealed box is When the material placing plate is carried into the 1 # chamber of the glove box and the two isolation valves are closed, the second transfer sealed box is released. 3. The first transfer sealed box is brought into contact with the 3 # isolation valve on the 2 # chamber side, and the flanges of the two contacted isolation valves are hermetically locked. 4). The first conveying hermetic box and the isolation valve of the sintering furnace are brought into contact with each other, and the contacted flange is hermetically locked. 5. When the sintering furnace is evacuated and the degree of vacuum is higher than 50 Pa or a protective gas is introduced, heat insulation is performed with a preset processing curve, and sintering is performed at a maximum temperature of 1200 ° C. The present invention can effectively improve the characteristics of the magnetic material.