Double oriented electrical steel sheet and method for manufacturing same
A technology of electrical steel plate and manufacturing method, applied in the direction of manufacturing tools, circuits, electrical components, etc., can solve the problems of continuous production of materials, inability to use production efficiency, no use, etc., and achieve the effect of excellent magnetic properties
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
experiment example 1
[0154] Manufacture a slab consisting of the ingredients shown in Table 1 and Table 2 with the balance of Fe and unavoidable impurities, heat the slab at 1150°C and perform hot rolling to form a hot-rolled coil with a thickness of 1.6mm After annealing at 1100°C to 1140°C for 30 seconds, and at 900°C for 90 seconds, the rapidly cooled hot-rolled annealed sheet was cold-rolled to a reduction rate of 63%.
[0155] The cold-rolled sheet was nitrided at 0.02 wt%, and decarburized at a dew point of 60°C in a hydrogen atmosphere of 75% in a primary recrystallization annealing process to make the grain size 36 μm. Then, after applying the annealing separator containing the MgO component, the temperature was raised to 1200° C. at a rate of 20° C. per hour, and then secondary recrystallization annealing was performed within 20 hours. After the MgO annealing separator was removed from the cooled boards, insulation coating was performed, and the magnetic properties were measured, which ar...
experiment example 2
[0165] For the test piece A1 of Example 1, without removing the annealing separator, as shown in Table 4 below, the thickness fraction is controlled, and the upper insulating coating and the lower insulating coating are formed, so that the results are obtained after measuring the magnetic properties. Organized into Table 5 below.
[0166] 【Table 4】
[0167]
[0168] 【table 5】
[0169]
[0170] As shown in Table 4 and Table 5, it can be confirmed that the inventive examples satisfying the thickness fraction of the forsterite layer, the thickness of the upper and lower insulating layers, and the range of the rough surface have excellent magnetic properties. On the contrary, the comparative examples that failed to satisfy the thickness fraction of the forsterite layer, the thickness of the upper and lower insulating layers, and the range of the rough surface had particularly poor magnetic properties in the direction perpendicular to rolling.
experiment example 3
[0172] A slab is produced, which comprises in weight %: Si: 2.8%, Al: 0.029%, S: 0.001%, Mn: 0.15%, N: 0.003%, C: 0.025%, Ti: 0.002%, P: 0.05%, the balance is composed of Fe and unavoidable impurities. After heating the slab at 1150°C, it is hot-rolled and made into a hot-rolled coil with a thickness of 1.6mm, and annealed at 1100°C to 1140°C for 30 seconds, and at 900°C for 90 seconds, the following table 6 Cold-rolling the rapid-cooled hot-rolled annealed sheet at the reduction rate recorded in .
[0173] The cold-rolled plate is described in the following table 6. In the state of nitriding or not, the annealing process of decarburization is carried out at a dew point of 60°C and a hydrogen atmosphere of 75% to make it reach the following table 1. The recorded average grain size. The unnitrided primary recrystallized test piece was heated at a rate of 10°C / s in an atmosphere of 100% nitrogen, and annealed at 1150°C for 30 minutes. The nitrided test piece was coated with Mg...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
| particle diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More