Kawasaki Steel Corporation

Munetoshi Suzuki

Yuji Shimoyama

Fumiya Yanagishima

Hideo Sunami

Takeo Ohnishi

Yukio Ida

Hiromasa Yamamoto

Goji Katsushima

Gunji Sakamoto

A steel strip continuous annealing apparatus comprising: a steel strip feeder; a heating-soaking zone for heating and soaking a steel strip at a predetermined temperature; a first cooling zone for rapidly cooling the steel strip at a predetermined cooling rate; a second cooling zone for slowly cooling the steel strip or holding same at a predetermined temperature; a third cooling zone for cooling the steel strip to substantially room temperature; and a steel strip carryout device; wherein the first cooling zone incorporates therein forcible cooling means, the second cooling zone incorporates therein hot-cold change-over means and the third cooling zone incorporates therein forcible cooling means, while said steel strip continuous annealing apparatus further comprises: means for directly bypassing the steel strip from the heating-soaking zone through a first bypass passageway to the second cooling zone; and means for directly bypassing the steel strip from the first cooling zone through a second bypass passageway to the steel strip carry-out device; so that the steel strips different in dimensions and required heat cycle can be efficiently annealed.

Steel strip continuous annealing apparatus

A steel strip continuous annealing furnace comprises a heating zone, a soaking zone and cooling zones, wherein bridle rolls for isolating tension of a steel strip from those in adjacent sections of the steel strip are provided at the inlet and outlet of the furnace and in the furnace so as to define a plurality of tension control blocks and provide tension control mechanisms for controlling the tensions of the steel strip in the respective tension control blocks, so that appropriate tensions can be rendered to the steel strip in the respective zones of the furnace, thereby enabling to secure the safe and satisfactory operating conditions.

Steel strip continuous annealing furnace

Growing community of inventors

Chiba, Japan

Munetoshi Suzuki