| Abstract Scope |
Cold-rolled high strength steel sheet for automobile contains more Mn, Si based alloy elements,The alloy elements in the annealing furnace of reductive atmosphere under the effect of enrichment on the strip surface,Since the furnace roller and strip the frequent contact, alloy elements in the roll surface to form a hard protuberance,We call this protuberance is pick-up.In addition, increasing the amount of dust in the furnace atmosphere, will also increase the incidence of furnace rollers pick-up. Furnace atmosphere cleanliness is closely related to strip surface quality,To get a good strip surface quality, must be controlled atmosphere furnace particulate matter concentration.From chemical reaction and physical accumulation analysis of pick-up reason in different furnace section . Combined with practical experience，Discussion of high strength steel sheet processing line to prevent furnace roller pick-up method.In order to improve the surface quality of strip provides a better solution. |