Application of S7 programmable controller on SKW75 high speed tube rolling mill

SKW75VMRCK cold-rolled pipe mill is a high-speed long-stroke cold rolling mill imported from Germany in the 1990s. It is a high-precision copper rolling of copper straight extruded tube billet through cold rolling and crimping process. Special equipment for coil blanks. The electrical equipment uses the Siemens S5-135U CPU as the main control element, which has a high degree of automation and guarantees full automatic operation from pipe feeding to automatic crimping after rolling. But from the end of 1998 to July 2000, the most