How to solve the rusting of iron core in transformer silicon steel sheet
Silicon steel sheets are divided into oriented silicon steel sheets and non oriented silicon steel sheets. In terms of chemical composition, the silicon content of oriented silicon steel is higher than that of non oriented silicon steel, and the price of oriented silicon steel sheets is also higher.
Oriented silicon steel is mainly used for transformers, while non oriented silicon steel is mainly used for motors. Silicon steel sheets have good punching properties. This is very important for making small and micro motor iron cores. The newly stamped silicon steel sheet iron core has a bright and non mottled cross section, and can be directly sprayed with silicon steel anti rust oil, and then sealed and packaged. And oriented silicon steel generally has a very good external coating, and under normal circumstances, rusting is relatively rare. If there is rust, it is also caused by edge cutting. If it is a cut silicon steel sheet, the surface needs to be cleaned first before applying rust proof oil to the silicon steel sheet.
The non oriented semi process silicon steel has no coating on the surface and generally needs to be blued. Before blueing, the surface should be cleaned and soaked in anti rust oil to prevent rusting. This type of non oriented semi process silicon steel is generally used in the motor or compressor industry.
Hot rolled non oriented silicon steel does not have a coating on the surface, but it has an oxide film and also has anti-corrosion effects. It is not easy to rust in a generally non corrosive dry environment.
The rust proof oil customized for silicon steel sheets can form a fine polar protective film on the metal surface. The polymer corrosion inhibitor can penetrate deeply into the capillary pores on the metal surface, seal the pinholes on the silicon steel surface, effectively block various corrosion factors that cause corrosion of silicon steel stamping parts, eliminate moisture, prevent air oxidation, neutralize acidic and alkaline media, and effectively prevent oxidation and rust.
Article source: Transformer silicon steel sheethttp://www.cheungshun.com/
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