According to the test research on structure and texture of head

meddle and end of 35W300 high grade 0.35 mm cold rolled non-oriented electrical steel strip coil (/% : 0.002C

2.71Si

0.22Mn

0.015P

0.003S

0.0020N

0.55Als) and corresponding magnetic properties

It is found that due to 12 MPa high pressure water continuous cooling the roller in hot rolling process led to head

middle and tail of strip rolling at different temperature and after coiling the head of strip coil being in center of coil led to its temperature slightly higher and cooling speed lower than that of tail of coil

as a result the longitudinal structure and texture of coil are different and the magnetic induction gradually increases and iron loss gradually decreases in 250 m at head and tail

more than 250 m to middle of coil the magnetic properties are stable. With modifying the hot roller continuous cooling model to cycle cooling model and modifying the laminar cooling model after coiling to starting cooling after coiling 70 m and stopping cooling ahead 70 m of finishing coiling

the difference of iron loss of longitudinal coil obviously decreases and the difference of magnetic induction slightly improves.