Method for preparing manganese-aluminium hard-magnetic alloy
A hard magnetic alloy and alloy technology, applied in the field of manganese-aluminum hard magnetic alloy manufacturing, can solve the problem of high magnetic properties, achieve the effects of improved magnetic properties, low cost of raw materials, and easy operation and production
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[0037] Example 1
[0038] First determine the molecular formula of manganese aluminum alloy, calculate the mass percentage of each element (as shown in Table 1) and weigh the corresponding weight (raw material purity: 99wt% or higher). The alloy raw material smelted in a vacuum induction furnace is used to make an ingot billet.
[0039] Use rapid quenching equipment (such as figure 1 ), put the molten alloy into the crucible 1, the heating source 2 provides heat to the molten state, pour it on the water-cooled copper roller 3 rotating at a peripheral speed of 30 to 50 m / s, and the cooling speed is close to 10 6 °C / sec. Collection buckets or collection grooves can be arranged in the direction of the alloy thin strips shooting out. The thickness of the alloy strip is about 20 to 50 μm. The X-ray diffraction pattern of the alloy powder is as figure 2 As shown, when the linear velocity of the copper roll is 40 m / s, the alloy powder exhibits an amorphous structure; when the l...
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