NdFeB hydrogen decrepitation furnace

Abstract

The invention discloses an NdFeB hydrogen decrepitation furnace which comprises a main machine, a feeding device and a vacuum system which are arranged in a matched mode, wherein the main machine comprises a base, a first rack and a barrel, the two ends of the first rack are movably connected with the base through jacking oil cylinders, the barrel is provided with a feeding port, a discharging port and a main pipeline connector, and the feeding port and the discharging port are located at the same end of the barrel; a feeding end cover is movably arranged on the first rack, a first locking flange assembly is movably arranged on the feeding port, and the feeding end cover is matched with the first locking flange assembly in an inserted mode; and the vacuum system comprises a second rack and a main pipeline movably arranged on the second rack, a second locking flange assembly is arranged at the end of the main pipeline, a connecting flange is arranged on a connector of the main pipeline, and the connecting flange is matched with the second locking flange assembly in an inserted mode. The NdFeB hydrogen decrepitation furnace is simple and reasonable in structure, convenient to operate, capable of effectively saving the space needed by installation, beneficial to improving the product quality and reducing the labor intensity of workers, and higher in reliability.

Description

technical field [0001] The invention relates to the technical field of NdFeB processing equipment, in particular to an NdFeB hydrogen crushing furnace. Background technique [0002] Hydrogen crushing furnace, also known as hydrogen crushing furnace, is a processing equipment for NdFeB alloy materials. Its principle is to use the characteristics of grain boundary fracture and transgrain boundary fracture produced by the rare earth permanent magnet alloy in the process of hydrogen absorption and dehydrogenation. Cause alloy pulverization, so as to obtain alloy powder with a certain particle size. After the NdFeB ingot is processed by the hydrogen crushing furnace, it directly enters the next process-jet mill crushing, which can effectively reduce the oxidation probability of the material. [0003] In the prior art, for example, Chinese Patent (Application No. 201020613042.X) discloses a hydrogen furnace for rare earth alloy powder hydrogenation, which includes a feeding devic...

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Problems solved by technology

[0004] The defects of the above-mentioned hydrogen broken furnace are: firstly, the feed pipe and the discharge pipe are respectively arranged at both ends of the cylinder body. Since the discharge pipe needs to be connected to the receiving device, this kind of one-side feeding and one-side discharging The structure will make the overall volume of the equipment bulky, resulting in the need to occupy a large space, and the cylinder of the hydrogen breaker needs to be vacuumed for dehydrogenation during work (the hydrogen breaker for the hydrogenation of rare earth alloy powder is carried out by the gas pipeline. The material pipe vacuumizes the cylinder body), therefore, the requirements for the sealing of the cylinder body are relatively high. Since the above-mentioned hydrogen furnace breaks the feed pipe and the discharge pipe respectively at both ends of the cylinder body, the rear cover of the cylinder body needs to be frequently disassembled. Once the back cover of the cylinder and the discharge pipe are not tightly sealed, the external air will enter the cylinder from the gap between the back cover of the cylinder and the discharge pipe, and this part of the air will penetrate the entire inner cavity of the cylinder during vacuuming , so that the material in the cylinder is in contact with excess air, resulting in an increase in the oxygen content in the cylinder and affecting the processing quality of the material; second, because the feed pipe of the cylinder doubles as a gas interface, it is impossible to independently conduct an independent inspection of the feed pipe and the gas interface. Therefore, in the discharge process, it is necessary to separate the feed pipe of the cylinder from the gas pipeline, and then seal the feed pipe of the cylinder to prevent the air from entering the cylinder and causing the quality of the material to decline. The above-mentioned prior art is The specific operation for sealing the feed pipe during the discharge process is: when the feed pipe is disengaged from the gas pipeline, manually install the end cover on the feed pipe through bolts. This manual operation is very inconvenient. Moreover, it takes a certain amount of time to cover and install the end cap. During this process, some air will still enter the cylinder, resulting in an increase in the oxygen content in the cylinder and affecting product quality.

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