| 简介 |
Provided in this invention is a technological process for continuously sintering a rare earth permanently magnetic alloy, comprising : connecting a preparation box, a glove box, a tunnel-type sealed conveying box, a lock chamber, a charging chamber, a pre-heating chamber, a heated degassing chamber, a sintering chamber, and a cooling chamber in series, by means of isolation valves between the boxes and chambers; conveying the rare earth permanently magnetic powder alloy formed by compacting through an oxygen-free atmosphere; and subjecting the same to treatment, such as heating, degassing, sintering, and cooling in different chambers. The preparation box, glove box, and tunnel-type sealed conveying box are driven by bottom rollers, while the driving devices in other chambers are arranged in the upper part of the respective chambers with conveying roller tracks, a roller of a material rack is suspended on a track of the conveying device, and a drawer-type material rack can contain a plurality of material boxes. A vertical rectangular furnace is also provided, having a narrow heating zone width, even heating, and fast cooling with high efficiency. Under the premise of a substantial energy saving, oxygen-free conveying and continuous sintering improve the performance of products and ensure that the sintered rare-earth permanently magnetic alloy has a consistent magnetic performance. |
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