Grain oriented electrical steel sheet and method for manufacturing same
A technology of oriented electrical steel sheets and manufacturing methods, applied in the direction of manufacturing tools, furnace types, furnaces, etc., can solve the problems of lower yield rate, magnetic deviation between outer and inner coils, coil temperature deviation, etc., and achieve omission of dipping Effect of nitrogen annealing and stable production
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0075] A slab containing Si: 3.23%, C: 0.25% and the balance Fe and unavoidable impurities in weight % was heated at 1250° C. and then hot-rolled to a thickness of 1.6 mm. Next, after annealing at an annealing temperature of 870°C and a dew point temperature of 60°C for 120 seconds, the hot-rolled sheet annealing was performed at an annealing temperature of 1100°C at an annealing temperature of 1100°C in a hydrogen-nitrogen mixed gas atmosphere with a dew point temperature of 0°C or lower. , pickling was carried out after cooling, and cold rolling was carried out at a reduction ratio of 60%.
[0076] The cold-rolled plate is again decarburized at an annealing temperature of 870°C and a dew point temperature of 60°C for 60 seconds, then annealed at an annealing temperature of 1100°C for 50 seconds in a hydrogen-nitrogen mixed gas atmosphere with a dew point temperature of 0°C, and cooled Afterwards, pickling was performed, and cold rolling was performed at a reduction ratio of ...
Embodiment 2
[0082] A slab containing Si: 3.22%, C: 0.245% by weight and Bi as shown in Table 2 below, with the balance being Fe and unavoidable impurities, was heated at a temperature of 1250° C., and the thickness was 1.6 mm. Hot rolling, followed by annealing at an annealing temperature of 870°C and a dew point temperature of 60°C for 120 seconds, followed by annealing of the hot-rolled sheet at an annealing temperature of 1100°C for 30 seconds in a hydrogen-nitrogen mixed gas atmosphere with a dew point temperature of 0°C or lower, and cooling Thereafter, pickling was performed, and cold rolling was performed at a reduction ratio of 60%.
[0083] The cold-rolled plate is again decarburized at an annealing temperature of 870°C and a dew point temperature of 60°C for 60 seconds, then annealed at an annealing temperature of 1100°C for 50 seconds in a hydrogen-nitrogen mixed gas atmosphere with a dew point temperature of 0°C, and cooled Afterwards, pickling was performed, and cold rolling ...
Embodiment 3
[0089] A slab containing Si: 3.19%, C: 0.24%, Bi: 0.05% and the balance Fe and unavoidable impurities in weight % was heated at a temperature of 1250° C. and then hot-rolled with a thickness of 1.6 mm, Next, after annealing at an annealing temperature of 870°C and a dew point temperature of 60°C for 120 seconds, hot rolling was carried out at an annealing temperature of 1100°C for the time indicated in the following Table 3 in an atmosphere of hydrogen, hydrogen, and nitrogen with a dew point temperature of 0°C or lower. The sheet was annealed, cooled, pickled, and cold rolled at a rolling reduction of 60%.
[0090] The cold-rolled plate is again decarburized at an annealing temperature of 870°C and a dew point temperature of 60°C for 60 seconds, then annealed at an annealing temperature of 1100°C for 50 seconds in a hydrogen-nitrogen mixed gas atmosphere with a dew point temperature of 0°C, and cooled Afterwards, pickling was performed, and cold rolling was performed at a red...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More