Manufacturing method of magnetostrictive material
A technology of a magnetostrictive material and a manufacturing method, which are applied in the manufacture/assembly of magnetostrictive devices, material selection for magnetostrictive devices, piezoelectric effect/electrostrictive or magnetostrictive motors, etc. Solve the problem that the amount of magnetostriction cannot be fully controlled, and achieve the effect of increasing the mechanical strength and increasing the amount of magnetostriction
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Embodiment 1
[0046] 7 kg of an alloy material composed of Co, the remainder of Fe, and unavoidable impurities shown in Table 1 was melted in an Ar flow, and cast into a mold to produce an ingot of about 80 mmφ (test (1) in Table 1 ) to (5) melting process).
[0047] Next, in the tests (1) to (4) in Table 1, the ingot was kept in a gas-fired heating furnace at 1000 to 1100° C. for 1 hour before being released from the furnace, and formed into a plate with a thickness of about 15 mm by hot forging with an air hammer ( hot forging process).
[0048] Then, in the tests (1) and (2) in Table 1, a 15 mm thick plate was formed into a 0.3 mm thick plate with a cold roll rolling mill (cold rolling process). Furthermore, in the test (2) of Table 1, after holding|maintaining at 800 degreeC for 1 hour in an electric furnace, the furnace body was cooled (heat treatment process).
[0049] In addition, in the tests (3) and (4) of Table 1, after holding a 15 mm thick plate at about 1100° C. for 1 hour in...
Embodiment 2
[0059] By each mass % of Co shown in Table 2 and Table 3; each mass % of Nb, Mo, V, Ti or Cr; the rest of the alloy material composed of Fe and unavoidable impurities, smelting 7kg in Ar atmosphere, casting to a mold to produce an ingot of about 80 mmφ (melting process).
[0060] Next, the ingot is held in a gas-fired heating furnace at 1000-1100°C for 1 hour, then released from the furnace, and formed into about 16mmφ by hot forging with an air hammer (hot forging process).
[0061] Next, it is formed into a wire rod of about 8 mmφ by cold stretching (cold stretching process). Furthermore, after holding|maintaining at 800 degreeC for 1 hour in an electric furnace, the furnace body was cooled (heat treatment process).
[0062] This produces a magnetostrictive material.
[0063] A JIS14A tensile test piece of 4 mmφ and a magnetostrictive measurement sample of length 8 mm×width 5 mm×thickness 0.3 mm were prepared from the produced magnetostrictive material for testing. Tensil...
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Abstract
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