Jiangyin Hengtong Electrical Equipment Co., Ltd
Jiangyin Hengtong Electrical Equipment Co., Ltd
Add to Cart
China manufacturer Rectifiers Nucleus Steel Plates (EI Laminations) CRNGO
Silicon steel sheet (silicon steel sheet) is mainly smelted with oxygen converter (also can be smelted by electric arc furnace), with molten steel vacuum treatment and AOD technology (see refining outside the furnace, using die casting or continuous casting method. According to different uses, change silicon during smelting (0.5 ～ 4.5%) and aluminum (0.2 ～ 0.5%) content to meet different magnetic requirements. The silicon and aluminum content of high-grade silicon steel sheet is correspondingly increased. Carbon, sulfur and inclusions are minimized.
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 ° C for one time and hot-rolled annealing under the protection of hydrogen to produce hot-rolled silicon steel sheets, which has a high yield rate and good surface quality and magnetic properties.