| 摘要 |
PURPOSE:To obtain a hot dipped steel strip having less hot dipping defects such as adhesion of metallic dross and undipping by swinging the surface of a part of a hot dipping bath where a steel strip is continuously introduced into the bath in a reducing atmosphere. CONSTITUTION:Steel strip 1 is passed through pretreatment furnace 21 to clean the surface, and it is turned to hot dipping bath 9 by direction changing roll 8. Strip 1 is introduced into bath 9 from bath surface 19 in snout 11 connected to down chute 10 through shoot 10 connected to furance 21 with expansive member 20 in- between. During this time, surface 19 in snout 11 in swung violently and renewed always by the vibration of strip 1 allowed to contact with eccentric support roll 18 set in chute 10. The direction of strip 1 is then changed to the perpendicular direction with dipped roll 12. Thus, hot dipping is carried out without adhering dross to strip 1, and a fine hot dipped product is obtd. |
