Abstract:This paper comprehensively compares five common calculation methods on comprehensive yield rate of copper strip, including phased yield combination method, finished product calculation method, calculation inventory method, single volume arithmetic mean method, and finished product tracking calculation method. Through analysis, the calculation inventory method is relatively simple in statistical calculation, high in accuracy, less affected by other factors, and can be used for the calculation of yield in the current month or longer period. The single roll arithmetic average method can be used to calculate the weekly yield rate. It only needs to summarize the daily yield rate. The calculation is simple and has greater significance in guiding production. In addition, this article elaborates and analyzes the impact of coil weight, strip breakage, mill head and tailing, edge cracking and trimming, melt casting and milling surface, and cutting loss on the yield rate. In practical production, it is necessary to pay special attention to them, and analyze and summarize improvement measures to reduce product process loss and improve product yield rate.