Patent ID: 9096918
Filing Date: 2015-08-04
Classification: C21D,C22C,C23C

Abstract:
1. A production arrangement for providing a steel sheet which is at least one of a steel sheet or a hot dip zinc coated steel sheet having a particular elongation and a hole expandability, the arrangement comprising: a particular arrangement which is a combination of a continuous annealing facility and a continuous hot dip zinc coating facility, having a pass line bypassing the hot dip zinc coating facility, a quenching facility configured to cool the hot zinc coated steel sheet to a temperature region of about a martensite transformation point or less to generate a quenched steel sheet; a tempering facility comprising a heating system having an induction heating portion, configured to temper the quenched steel sheet and maintain a temperature of the steel sheet; and a recooling facility configured to cool the steel sheet to the temperature of the steel sheet at about 100° C. or less.