A kind of method of using samarium cobalt permanent magnet waste product to prepare samarium cobalt permanent magnet finished product
A permanent magnet and samarium-cobalt technology, which is applied in the field of using samarium-cobalt permanent magnet waste products to prepare samarium-cobalt permanent magnet products, can solve the problems of no easy recovery and regeneration of samarium-cobalt permanent magnets, high brittleness, and restricted application range, etc.
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Embodiment 1
[0025] A method for preparing a samarium-cobalt permanent magnet finished product by using samarium-cobalt permanent magnet waste products, comprising the steps of:
[0026] Step 1, configuring raw materials, the raw materials include samarium cobalt permanent magnet waste and metal mixture, the metal mixture contains 23% samarium, 43% cobalt, 10% iron, 3% copper, 1% zirconium, the samarium cobalt permanent magnet The magnet waste content is 20%, and the above percentages are weight ratios;
[0027] Step 2. Melting the raw materials prepared in step 1 in an intermediate frequency electromagnetic furnace to obtain molten alloy; pouring the molten alloy into the cavity of the ingot to obtain ingot; crushing the ingot with a 5-ton press, and Afterwards, sieve the powder with a wooden sieve above 20 meshes. The wooden sieve will not damage and absorb the raw material particles, and will not introduce new impurities. press and cold isostatic press for forming; the pressure of the ...
Embodiment 2
[0030] A method for preparing a samarium-cobalt permanent magnet finished product by using samarium-cobalt permanent magnet waste products, comprising the steps of:
[0031]A method for preparing a samarium-cobalt permanent magnet finished product by using samarium-cobalt permanent magnet waste products, comprising the steps of:
[0032] Step 1, configuring raw materials, the raw materials include samarium cobalt permanent magnet waste and metal mixture, the metal mixture contains 20% samarium, 45% cobalt, 10% iron, 3% copper, 2% zirconium, the samarium cobalt permanent magnet The magnet waste content is 20%, and the above percentages are weight ratios;
[0033] Step 2. Melting the raw materials prepared in step 1 in an intermediate frequency electromagnetic furnace to obtain molten alloy; pouring the molten alloy into the cavity of the ingot to obtain ingot; crushing the ingot with a 5-ton press, and Afterwards, sieve the powder with a wooden sieve above 20 meshes. The woode...
Embodiment 3
[0036] The samarium-cobalt permanent magnet waste is pretreated before use, and the pretreatment process is: using a press to crush the samarium-cobalt permanent magnet waste, soaking the crushed samarium-cobalt permanent magnet waste in a cleaning solution, applying ultrasonic soaking 90min, then rinse with acetone, dry; the frequency of the ultrasonic wave is 45KHz, the ultrasonic power density is 1000W / L, the ultrasonic wave adopts intermittent irradiation, and the interval time during intermittent irradiation is 20s / 10s;
[0037] The cleaning solution comprises the following raw materials by weight: 8 parts of sodium hydroxide, 3 parts of sodium silicate, 2 parts of ammonium molybdate, 1 part of sodium pentachlorophenate, 5 parts of methyl acetate, and 3 parts of polyacrylamide , 3 parts of N-phosphinecarboxymethyliminodiacetic acid, 5 parts of nicotinamide, 3 parts of N-vinylimidazole, 5 parts of trisodium ethylenediamine disuccinate, 1-ethyl-3-methylimidazole lactic acid ...
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