Electrical steel plate and preparation method thereof
A technology for electrical steel and steel plates, which is applied in metal processing equipment, manufacturing tools, welding equipment, etc., and can solve the problems that scored electrical steel products cannot be applied to wound core transformer annealing treatment, stress relief annealing treatment, and lack of heat resistance , to achieve the effect of reducing the size of the production site and the requirements of protective facilities, increasing the strength and improving the mechanical properties
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Embodiment 1
[0048] The raw materials are electrical steel plates processed by laser scoring, and their specifications are 0.18mm thick. Heat the plate to 50°C, and spread CaO powder with a particle size of 2 μm on the inner surface of the scored groove. The powder covering area accounts for 60% of the inner surface area of the groove, and then spray high-temperature water vapor on the groove for 5 minutes and then taken out, CaSiO is formed on the inner surface of the trench 3 Phase product, the particle size of the product is 30nm, and the surface area accounts for about 30% of the inner surface area of the groove. Then rinse the surface with clean water for 2 minutes, and dry it at room temperature.
[0049] The magnetic properties of the processed electrical steel samples were tested first, followed by annealing at 800°C for 2 hours, and then the magnetic properties were tested. The test results are shown in Table 5. It can be seen from Table 5 that the properties of the raw mate...
Embodiment 2
[0054] The raw materials are electrical steel sheets processed by laser scoring, and their specifications are 0.27mm thick. At room temperature, spread CaO powder with a particle size of 0.01-1 μm on the inner surface of the scored groove, the powder covering area accounts for 50% of the inner surface area of the groove, and then spray high-temperature water vapor on the groove for 5 minutes and then taken out, CaSiO is formed on the inner surface of the trench 3 Phase product, the particle size of the product is 1-10nm, and the surface area accounts for about 20% of the inner surface area of the groove. Then use a weak acid solution to rinse the surface for 2 minutes, and dry it at room temperature.
[0055] The magnetic properties of the treated electrical steel samples were tested first, followed by annealing at 800°C for 2 hours, and then the magnetic properties were tested. The test results are shown in Table 6. It can be seen from Table 6 that the properties of the...
Embodiment 3
[0059] The raw materials are electrical steel sheets processed by laser scoring, and their specifications are 0.27mm thick. At room temperature, spread CaO powder with a particle size of 1-5 μm on the inner surface of the scored groove, and the powder coating area accounts for 65% of the inner surface area of the groove, and then spray high-temperature water vapor on the groove for 5 minutes and then taken out, CaSiO is formed on the inner surface of the trench 3 Phase product, the particle size of the product is 15-50nm, and the surface area accounts for about 45% of the inner surface area of the groove. Then the surface was rinsed with a neutral salt solution for 2 minutes, and dried at room temperature.
[0060] The magnetic properties of the treated electrical steel samples were tested first, followed by annealing at 800°C for 2 hours, and then the magnetic properties were tested. The test results are shown in Table 7. It can be seen from Table 7 that the properties ...
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