Discussion on equipment selection of trimming-recoiling line for hot rolled thin strips

As the market competition gets more and more intensified,the hot rolling equipment is being improved continuously.The hot rolled thin strips with a thickness below 2 mm can be used as the substitutes for some cold rolled thin strips as well as certain coated products using cold rolled thin strips as the substrates.As the proportion of hot rolled thin strips with a thickness below 2 mm increases continuously,there has to be a match in function and capacity between the finishing units and the conventional hot rolling lines.This paper introduced the current status of the trimming-recoiling lines for hot and cold rolled thin strips in China,and discussed the selection of trimming-recoiling equipment for hot rolled thin strips with a thickness below 2 mm.In addition,measures to increase the production output were also discussed.The use of double decoilers was proposed for the first time to raise the production output.Such a design will not only reduce the investment and the production cost,but also improve the flatness of the products,thus helping realize the substitution of hot rolled thin strips for some cold rolled strips.