APPLICATION OF READY-SWITCH-OVER TO MANDREL TRANSMISSION SYSTEM

Citing the retained-mandrel transmission system of the Accu-Roll pipe mill as an instance,the author describes the advantages,working principle and current problems with respect to the common logic non-circulation system. Comparision between the non-ready switch-over and the ready-switch-over is made. Mainly discussed are the configuration, working principle and appli cation of the logic non-circulation system with ready-switch-over.