Electroplating method for neodymium iron boron magnetic material for permanent magnet motor
A permanent magnet motor, NdFeB technology, applied in jewelry, etc., can solve the problems of NdFeB corrosion, to achieve the effect of ensuring quality, avoiding internal corrosion, and good corrosion resistance
Inactive Publication Date: 2018-01-19
ANHUI ZHONGCI HI TECH
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Problems solved by technology
However, NdFeB is extremely susceptible to corrosion
Method used
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Experimental program
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Embodiment Construction
[0023] The NdFeB magnetic material electroplating method for permanent magnet motor of the present invention comprises the following steps:
[0024] A. Baking and degreasing
[0025] Put the formed NdFeB magnetic material into an oven and bake at 200°C for 1 hour.
[0026] B. Surface finishing
[0027] Place the magnetic material obtained in step A in a vibration polishing machine, start it up and run for 2 hours, and carry out surface finishing treatment;
[0028] In the step B, the grinding stone of the vibrating polishing machine adopts a 4 mm oblique triangle, and the particle size of the grinding stone is 280 mesh.
[0029] C. Sealing
[0030] Heat the zinc stearate to 130-140°C to melt, soak the magnetic material obtained in step B for 30±5min, take it out and dry it at 600°C for 30min to make it solidify.
[0031] D. Pickling
[0032] Prepare a solution with nitric acid 30-40mL / L and thiourea 0.5g / L, use ammonia water to adjust the pH value to 4-5, pickle the magne...
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Abstract
The invention provides an electroplating method for a neodymium iron boron magnetic material for a permanent magnet motor. The electroplating method comprises the steps that A, baking for oil removalis conducted; B, surface finishing is conducted; C, hole sealing is conducted, specifically, zinc stearate is heated to be 130-140 DEG C to be melted, and the magnetic material obtained in the step Bis steeped for (30+-5) min and taken out to be dried for 30 min under the temperature of 600 DEG C, so that the magnetic material is solidified; D, acid pickling is conducted, specifically, a solutionis prepared from 30-40 mL / L of nitric acid and 0.5 g / L of thiourea, ammonia water is used for adjusting the PH value to be 4-5, and the magnetic material obtained in the step C is subjected to acid pickling for (30+-10)min under the room temperature condition till the surface of a part presents the even, delicate and glossy silvery white; E, activating is conducted; F, nickel steeping is conducted; and G, electroplating is conducted to obtain a finished product. Batch processing can be conducted on the neodymium iron boron magnetic material, the surface of the obtained product is smooth and clean, the anti-corrosion capacity is high, and the electroplating method can be suitable for the using work condition of the permanent magnet motor.
Description
technical field [0001] The invention relates to a method for preparing a permanent magnet motor material, in particular to a method for electroplating an NdFeB magnetic material for a permanent magnet motor. Background technique [0002] Permanent magnet motors can not only achieve high performance (such as ultra-high efficiency, ultra-high speed, and ultra-high response speed) that cannot be compared with traditional electric excitation motors, but also can be made into special motors that can meet specific operating requirements, thereby improving the supporting technical equipment. It is an important development direction for the motor industry to adjust the industrial structure. [0003] NdFeB magnetic material is a kind of permanent magnet material, its magnetic energy product is 5 to 6 times that of AlNiCo system, about 10 times that of ferrite system, and about 2 times that of SmCo system. It is the most magnetic permanent magnet so far. Magnetic materials are also i...
Claims
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IPC IPC(8): C25D7/00C25D5/34C25D3/38
Inventor 陈国军吴结华曹彬陈远鹏余东劲
Owner ANHUI ZHONGCI HI TECH