Friction and Lubrication in the Cold Rolling of Thin Sheet Metals

概要

論文の詳細を見る
One of the important problems to be solved on the friction and lubrication in the cold striprolling is to know how much amount of lubricant is carried in the interface of the roll and strip. In order to facilitate its estimation, the authors proposed a new parameter ; t_d=η(U_0+U_1)/(αp_1) where η is viscosity of lubricant, U_0 peripheral speed of rolls, U_1 entry speed of strip, α angle of bite and p_1 yield stress of strip in plane strain. Experimental results on aluminium sheets show that oil quantity dragged in the roll bite increases with the value of t_ψ and the larger the t_d the smaller the calculated coefficient of friction. By applying the t_d on the results of further investigation, some other factors affecting the lubrication are revealed. They are strip thickness, reduction, roll diameter, previous heat treatment of strip, intensity of roll pressure and others.
一般社団法人日本機械学会の論文