Optimized selection method for six-pass mode emulsion oil tank of 5 +1 type cold continuous rolling unit

The invention discloses a 5 + 1 type cold continuous rolling unit six-pass mode emulsion oil tank optimization selection method, a 5 + 1 type cold continuous rolling unit comprises five conventional rolling mills and a fourth rack small-roll-diameter rolling mill, and the emulsion oil tank optimization selection method comprises the following steps that six selected racks are numbered; basic equipment parameters of the 5 + 1 type cold continuous rolling unit are collected; rolling process parameters are collected; relevant parameters of emulsion of the 5 + 1 type cold continuous rolling unit are collected; selecting an emulsion oil tank combination in a six-pass rolling mode; setting related parameters in an emulsion oil tank optimization process; initial parameters in the emulsion oil tank optimization process are set, and the step length of optimization is given; selecting emulsion concentration and emulsion temperature; calculating a target function of each emulsion oil tank combination; and outputting the