Investigating the main angles and force factors of rolling

Abstract

1. With constant rolling conditions the thickness and density of the strip are directly dependent on the bulk weight of the powder and independent of the method of preparing it. The shape of the particles and the plasticity of the metal are the main factors determining the elasticity of the raw strip. With the same particle size, an increase in the bulk weight of the powder increases the thickness and density of the ribbon, but impairs its elasticity. 2. The magnitude of the basic rolling angles depends on the properties of the powder and the density of the rolling. The angle of compactionα increases with increase in density of the strip and the hardness of the powder material. The angle of elastic compression of the rollersαc increases with rise in the density of the strip. This is correct for all powders and is explained by the deformation of the rollers from the action of full pressure of the powder being rolled. The neutral angle γ in the range of densities studied for the ribbon (up to γ°L = 0.8) diminishes with increase in the rolling density. 3. The force parameters of rolling, that is, the maximum specific pressure, the full pressure on the roller and the turning moment, depend on the density of the strip and the properties of the powder. The magnitude of the maximum specific pressure determining the density of the rolling increases with rise in hardness of the material being rolled and the dispersion of the particles.