Determination of Oil Film Thickness in Rolling from the Relationship between Surface Roughness of Strip and Roll : Investigation into Friction and Lubrication in Cold Rolling

スポンサーリンク

概要

• 論文の詳細を見る

• Author proposes a method of determination of the oil film thickness from the contact behaviors between the rolls and the strip. The oil film thickness at the contact h_<con> is written as h_<con> = (the surface roughness of roll) × 1/2 + (the surface roughness of strip) × 1/2 The oil film thickness in rolling is measured by means of a similar method to that proposed by Saeki et al. The measured values are in good agreement with the calculated values. When the oil film thickness is greater than h_<con>, the reflection in the rolling direction R agrees with that in the transverse direction R_<90>. When that is smaller than h_<con>, the reflection in the rolling direction is higher. Consequently, a parameter which can represent the lubrication mechanism in cold rolling is derived as α=R/R<90> When α=1, the lubrication mechanism is hydrodynamic and when α > 1, that is boundary.

• 一般社団法人日本機械学会の論文

著者

• Azushima Akira

  Research Associate Department Of Metallurgy Faculty Of Engineering The University Tokyo

関連論文

• Determination of Oil Film Thickness in Rolling from the Relationship between Surface Roughness of Strip and Roll : Investigation into Friction and Lubrication in Cold Rolling

スポンサーリンク