1993-03-01

Frictional Behavior of New Polymer Lubricating Film for Coated Steel Sheets 930810

Recently, many kinds of coated steel sheets are developed and used for automobile panels. Some of them show higher coefficient of friction and poorer formability than a cold rolled steel sheet. New polymer lubricating films are developed and proved to improve frictional characteristics of coated steel sheets in this study. The developed polymer lubricating films are applied to Electro Galvanized steel sheet and Hot Dip Galvannealed steel sheet, and coefficient of friction and formability of them are measured by using model dies. Different coefficients of friction are obtained by a change in a combination of components in a polymer lubricating film. As a result, the most suitable coefficient of friction is able to chose in forming conditions by the developed polymer lubricating films.

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