Method for accurately controlling primary recrystallization size of oriented silicon steel
A technology of oriented silicon steel and recrystallization, which is applied in the direction of heat treatment process control, manufacturing tools, heat treatment equipment, etc., and can solve the problem that the control accuracy cannot meet the requirements.
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[0035] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0036] Combined process figure 1 , a method for accurately controlling the primary recrystallization size of grain-oriented silicon steel, comprising the following steps:
[0037] S1, select steel coils for processing oriented silicon steel, and cold-roll them;
[0038] S2. After the steel coil is cold-rolled, the initial recrystallization annealing temperature setting model I is established according to the relationship between the initial recrystallization annealing temperature setting and the target grain size of the oriented silicon steel, and the annealing temperature target setting value is calculated;
[0039] The primary recrystallization annealing temperature setting model I is
[0040]
[0041] b1, b2, b3, b4: constants, which need to be fitted to the differences of different steel types;
[0042] Primary rec...
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