A MODEL FOR THE DEFORMATION FOCUS IN A ROLLER-TYPE BRIQUETTING PRESS

The compaction zone is considered for rollers whose working surfaces f orm a corrugated shape. An expression is derived for the time-variable slope in the equations for the equilibrium conditions for the forces and deformation focus, which is deflected towards the vertical axis be cause of the roll asymmetry. Expressions are derived for the neutral a ngles, which separate the compaction zone into lag and lead zones. An equation is proposed for the horizontal projection of the total pressu re of the material on the grooves in the cell, and also for the compac tion pressure. Patterns are derived for the pressure on the various pa rts of the compaction angle. The compaction forces are periodic when t he material is treated in rolls having complicated geometry in the wor king surfaces.