Production method for high-performance special-shaped iron-cobalt soft magnetic alloy parts
A soft magnetic alloy, high-performance technology, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problems that affect the sintering performance and magnetic properties of materials, high saturation magnetic induction, low output rate of alloy powder, etc., and achieve improvement Microstructural structure, reduced manufacturing cost, and improved sintering activity
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[0018] Example 1:
[0019] Carbonyl iron powder, reduced cobalt powder, and vanadium iron powder are used as raw materials, and the proportion of iron: cobalt: vanadium is 49:49:2 by weight. The ball mill is mixed in a planetary ball mill under argon atmosphere for 20 hours. It is 10:1. Microcrystalline wax, high-density polyethylene, polypropylene and stearic acid are selected as forming agents. Microcrystalline wax: high-density polyethylene: polypropylene: stearic acid is 60:25:10:5 ingredients, and each The organic substances were mixed for 2 hours in a molten state at a temperature of 150°C. The ball milled powder and the forming agent were kneaded in a kneader at 150°C for 3 hours at a volume ratio of the powder to the forming agent of 52:48. The mixture of powder and binder is molded on an injection molding machine, and injected into a mold under the conditions of a temperature of 160°C and an injection pressure of 100 MPa. After soaking the formed body in n-heptane at ...
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[0020] Example 2:
[0021] Using the same raw material powder and material composition ratio as in Example 1, the various raw material powders were mixed in a V-shaped mixer for 12 hours. The raw material powders were not subjected to high-energy ball milling treatment, and the mixed powders were the same as in Example 1. Forming and debinding process, after sintering at a temperature of 1400°C for 3 hours, the magnetic properties of the material are directly tested without hot isostatic pressing and subsequent heat treatment of the powder. The performance of the prepared soft magnetic material: the relative density is 93.4%, the saturation magnetic induction is 1.82T, the maximum permeability is 2.38mH / m, and the coercivity is 115.61A / m.
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[0022] Example 3:
[0023] Using the same raw material powder and material composition ratio as in Example 1, the various raw material powders will be mixed in a V-shaped mixer for 12 hours. The raw material powders are not subjected to high-energy ball milling. The other uses the same molding and materials as in Example 1. Sintering, hot isostatic pressing and heat treatment processes. The performance of the prepared soft magnetic material: the relative density is 99.2%, the saturation magnetic induction is 2.14T, the maximum permeability is 5.12mH / m, and the coercivity is 86.43A / m.
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