Elastic bonding type Nd-Fe-B magnetic material and manufacturing method thereof
A magnetic material, NdFeB technology, applied in the direction of magnetic materials, magnetic objects, inorganic materials, etc., can solve the problem of high refining temperature NdFeB magnetic powder oxidation, unfavorable bonding NdFeB magnetic material, NdFeB magnetic powder easy Oxidation and other problems occur, to achieve the effect of enhancing the bonding strength, broad application prospects, and preventing oxidation
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[0023] Example 1:
[0024] Firstly, 500 grams of neodymium iron boron magnetic powder (commercially available), which has passed through a sieve of 40 mesh or more, is mixed with 8 grams of coupling agent (NDZ-105), so that the coupling agent is completely impregnated with the neodymium iron boron magnetic powder, and then Then add 30 grams of strontium ferrite magnetic powder (Beikuang 4D magnetic powder), 60 grams of CPE plastic (Xinghuo 130), 7 grams of plasticizer (epoxy soybean oil, commercially available) and 5 grams of binder ( Commercially available), the prepared powder is smelted in an open mill for about 30 minutes. When the temperature of the roller drops to 40℃-70℃, the rubber mixing step is carried out, and when the temperature of the rubber film drops to room temperature, it is rolled. Rough pressing is carried out first, followed by fine pressing. The temperature of the fine pressing (i.e. finishing) roll is controlled at room temperature, the thickness of the fin...
Example Embodiment
[0026] Example 2:
[0027] Firstly, 300 grams of NdFeB magnetic powder, which has been screened by a sieve with a mesh size of 40 or more, is mixed with 2 grams of coupling agent, so that the coupling agent is completely impregnated with the NdFeB magnetic powder, and then 10 grams of barium ferrite are added. Magnetic powder, 25 grams of PE plastic, 3 grams of plasticizer, 3 grams of binder and 50% of the total weight of the aforementioned materials are recycled materials. The prepared powder is smelted in an open mill for about 30 minutes. When the roller temperature drops to 40℃-70℃, the rubber mixing step is carried out. When the rubber mixing film temperature drops to room temperature, it is calendered. The rough pressing is carried out first, and then the fine pressing is carried out. The temperature of the fine pressing is controlled at room temperature. The thickness of the coining is controlled at about 2.1mm, and the surface is smooth and smooth, and then heat treatment...
Example Embodiment
[0029] Example 3:
[0030] First, 300 grams of NdFeB magnetic powder and 100 grams of NdFeN magnetic powder, which have been screened by a sieve with a mesh number of 40 or more, are mixed with 5 grams of coupling agent, so that the coupling agent is completely impregnated with the NdFeB magnetic powder and NdFe Nitrogen magnetic powder, then add 50 grams of strontium ferrite magnetic powder, 50 grams of CPE plastic, 5 grams of plasticizer and 3 grams of binder, and smelt the prepared powder in an open mill for about 30 minutes When the roller temperature drops to 40℃-70℃, the rubber mixing step is carried out. When the rubber mixing film temperature drops to room temperature, it is calendered, first rough pressing, and then fine pressing. The temperature of the fine pressing is controlled at At room temperature, the thickness of the precision press is controlled to be about 2.1mm, and the surface is smooth and smooth. Then heat treatment at 30°C for 2 hours, then cool to room te...
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