Smoothing Conditions of Workmetal Surface in Metalworking Processes : Effects of Contact Pressure and Relative Slip Displacement

概要

論文の詳細を見る
To examine the effects of contact pressure and relative slip displacement on flattening conditions of surface asperities with no bulk plastic deformation of the workmetal, disk specimens were compressed by a punch in a closed die and rotated with the die. Slight relative slip displacement under the contact pressure remarkably accelerated the flattening of the surface asperites and thereby the workmetal surfaces could be smoothed completely to the same surface roughness as the tool. The changes in surface roughness of the workmetal could be approximated by the experimental equations expressed as a function of contact pressure and relative slip displacement. On the basis of these results, the flattening conditions of surface asperities accompanied by bulk plastic deformation of the workmetal were investigated by the free upsetting of a disk specimen and the upsetting of a ring specimen in a closed die. Consequently, the smoothing conditions of the workmetal surface in these forming processes could also be approximated by the same equations as the above experimental equations.
一般社団法人日本機械学会の論文
1992-03-15