Corrosion Resistance EI-105-4H 0.35mm Ei Core Lamination

EI transformer core factory price electrical steel silicon sheet

Thickness Tolerance

The good thickness tolerance is characterized by small difference in thickness in a direction parallel to the direction of rolling, small difference in thickness in a direction perpendicular to the direction of rolling, and high lamination factor.

Processing Properties

The product is suitable for punching and cutting with excellent dimensional tolerance.

Insulation Coating

The insulation coating has small color deviation, good adhesiveness and excellent resistance to heating and corrosion with high insulation coating resistance. There are several types of insulation coating available for production. According to the test results performed by the professional inspection organizations, the contents of hazardous substances comply with all the prevailing international and domestic environment protection laws and regulations including EU RoHS and REACH regulations.

Silicon steel is mainly smelted by oxygen converter (also can be smelted by electric arc furnace), combined with vacuum treatment of molten steel and AOD technology (see refining outside the furnace, using die casting or continuous casting method. According to different uses, silicon is changed during smelting (0.5 ～ 4.5%) And aluminum (0.2 ~ 0.5%) content to meet different magnetic requirements. The high-grade silicon steel sheet silicon and aluminum content correspondingly increased. Carbon, sulfur and inclusions are minimized. EI iron core

Cold-rolled silicon steel sheets have better magnetic properties, surface quality, fill factor and punching properties than hot-rolled silicon steel sheets and can be produced in coils, so some countries have stopped producing hot-rolled silicon steel sheets since the 1960s. China uses hot rolling at a low temperature of about 900 ℃ and stack annealing under the protection of hydrogen to manufacture hot-rolled silicon steel sheets, which has a high yield rate and good surface quality and magnetic properties.

The rolling of silicon steel is divided into two processes of hot rolling and cold rolling. The traditional process of directly using hot rolling to produce finished silicon steel has been rarely used at present. It is mainly produced by two processes of hot rolling and cold rolling, which is called cold rolled silicon steel. product. According to different products, the cold rolling process is divided into multi-stand rolling and single stand rolling, in which single stand rolling mainly produces oriented silicon steel products.