The following is the body of the article that is expanded according to the topic you gave [Physical properties of 35WW440 cold rolled non-oriented electrical steel]:
1. Introduction to 35WW440 cold-rolled non-oriented electrical steel.
35WW440 cold-rolled non-oriented electrical steel is a high-quality electrical steel with excellent magnetic properties, which is mainly used in the manufacture of iron cores in electrical equipment such as small and medium-sized motors, transformers, etc. The product has the characteristics of high magnetic inductance, low iron loss, high magnetic inductance, etc., and is widely used in electric power, electronics, home appliances and other fields.
Second, physical performance characteristics.
1.Magnetic properties: 35WW440 cold-rolled non-oriented electrical steel has high magnetic induction strength, up to 1More than 7t, with low iron loss and magnetic inductance polarization strength, to ensure that the electrical equipment has the characteristics of high efficiency, energy saving and environmental protection in the operation process.
2.Mechanical properties: The product has good machinability, and after cold rolling treatment, its tensile strength, yield strength and elongation and other indicators have reached the national standard. In addition, its surface is flat and smooth, making it easy to coat and insulate.
3.Chemical composition: The chemical composition of 35WW440 cold-rolled non-oriented electrical steel has been carefully proportioned and contains an appropriate amount of silicon, aluminum, carbon and other elements, which play a key role in improving the magnetic and mechanical properties of the product.
4.Temperature stability: The product can maintain stable magnetic properties in both high and low temperature environments, and is suitable for the manufacture of electrical equipment under different climatic conditions.
5.Corrosion resistance: Through a special surface treatment process, 35WW440 cold-rolled non-oriented electrical steel has good corrosion resistance and can resist the influence of harsh environments such as moisture and salt spray.
Third, the production process.
1.Raw material preparation: high-quality hot-rolled steel plate is selected as raw material to ensure that the chemical composition and mechanical properties meet the requirements.
2.Pickling: Oxides and impurities are removed from the surface of the steel plate by pickling to prepare for the subsequent cold rolling treatment.
3.Cold rolling process: Multiple passes of cold rolling are carried out at the appropriate temperature and pressure to gradually thin the steel plate and achieve the required dimensional accuracy and mechanical properties. In this process, the process parameters are strictly controlled to ensure the stability of product quality.
4.Annealing treatment: Annealing eliminates the internal stress generated during the cold rolling process and improves the plasticity and toughness of the material. The choice of annealing temperature and time is crucial for the magnetic and mechanical properties of the product.
5.Coating and insulation treatment: According to customer needs, the surface of the product is coated with an insulating coating to improve the corrosion resistance and insulation performance of the product.
6.Quality inspection: Strict inspection of the appearance, size, magnetic properties and mechanical properties of the finished products to ensure that each batch of products meets the standard requirements.
7.Packaging and transportation: Adopt appropriate packaging methods to ensure that the products are not damaged during transportation. At the same time, according to customer requirements, provide the corresponding product qualification certificate and warranty certificate.
Fourth, the field of application.
Due to the excellent physical properties and wide range of applications of 35WW440 cold-rolled non-oriented electrical steel, this product is widely used in the following fields:
1.Electric power industry: as a core material, it is used to manufacture small and medium-sized generators, transformers and other electrical equipment to improve the energy efficiency and stability of equipment.
2.Electronics industry: used in the manufacture of magnetic components in electronic components and assemblies, such as inductors and transformers.
3.Household appliances: It is used in household appliances such as air conditioners, refrigerators, washing machines, etc., to manufacture components such as motors and solenoid valves to improve the performance and reliability of electrical appliances.
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