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Annealing temperature and technology of silicon steel sheet
Jan 12, 2018

Silicon steel in the annealing temperature should not be too high or excessive, too high will affect the insulating coating or laminated bonding, the general and see the silicon steel sheet temperature We do, the general orientation of the temperature of silicon steel in about 800 degrees, no oriented silicon steel annealing temperature of about 700 degrees, And in the annealing time strictly controlled furnace protection atmosphere for the oxidation-free atmosphere.

The use of iron-core punching film does not oxidize, non-carburizing and electrical steel strip (silicon sheet) surface insulation coating no obvious deterioration of the principle, it is best to choose hydrogen 2-10% with hydrogen and nitrogen mixture gas, add a small amount of hydrogen to ensure that the iron core punching is not oxidized, the protection of the dew point in the gas in general should be below 0 ℃.

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