Production Process And Procedure Of Oriented Silicon Steel (Electrical Steel)

pickling
Remove the hot rolled steel strip by using a descaling machine and a hydrochloric acid tank
Oxides to prevent surface defects in cold-rolled finished products.

Cold stamping
In order to ensure different thicknesses and materials for different purposes, the deceleration ratio is set at 40% -90%, and advanced control equipment such as automatic thickness control and automatic shape control is implemented.

annealing
It is a project that softens the hardened steel strip material in cold stamping engineering. Production of deep processing steel and high tension steel through metal heating and rapid cooling, and the use of box (cover back) annealing and continuous annealing methods.
 

Insulation coating
When silicon steel plate is processed into iron core, in order to improve its processing performance and prevent Eddy current loss equivalent to the self multiplying thickness of steel plate, continuous coating equipment is used to spray insulation coating solution on and below the steel plate.

Silicon steel sheet processing process and procedures
Cold rolled oriented silicon steel process flow → primary cold rolling → intermediate annealing → secondary cold rolling → decarburization annealing and insulation layer coating → high temperature annealing in a bell furnace → thermal leveling and insulation layer coating → longitudinal (or transverse) cutting → packaging
Decarburization annealing coating isolation layer - a typical MgO coating isolation layer used for oriented silicon steel.
High temperature annealing in a bell furnace - generally, it is also used for oriented silicon steel, and some semi processed non oriented silicon steel also uses bell annealing, but the temperature is lower than that of oriented silicon steel.

he process flow of cold rolled non oriented silicon steel: hot metal desulfurization pretreatment → converter blowing → vacuum treatment → continuous casting → hot rolling → acid washing and cold rolling combined unit → longitudinal cutting unit/edge cutting heavy coil unit → wide coil packaging/narrow coil packaging.
In order to simplify the traditional production process of non oriented Electrical steel, reduce consumption and improve the magnetic properties of non oriented Electrical steel, more mass production is realized through the process of oxygen top blowing converter (BOF) - RH vacuum treatment - LF refining furnace - thin slab continuous casting and rolling (CSP) - pickling and rolling - continuous annealing.