Determination method of rolling reduction ratio in continuous cold rolling

摘要

The present invention relates to a method for determining a rolling ratio in continuous cold rolling, and to provide a method for determining a rolling ratio applicable to all continuous cold rolling.;The present invention relates to a method for determining the rolling ratio of each stand during continuous cold rolling in a continuous cold rolling mill comprising a plurality of rolling mills, the method comprising: obtaining a rolling load (Pi) for each stand by the following equation (1);; _{Pi = γ pi · Po ..... (} 1);(P i: rolling load of the i-th stand, γ _pi : rolling load distribution ratio of the i-th stand, Po: electric charge);Obtaining rolling mill entrance thickness (H) and exit thickness (h) by the following equation (2) using the rolling loads (Pi) for each stand obtained above; And;The summary of the method for determining the reduction ratio in continuous cold rolling, which comprises the step of obtaining the reduction ratio r using the rolling mill inlet / outer side thicknesses H and (h) obtained above, is provided.