Dry Ice Compaction in Piston Extrusion Process

Abstract

Abstract:The article presents the results of research on the effect of extrusion tube geometry on the axial force being the key parameter of the dry ice piston extrusion process. The tests were carried out with the experimental set-up based on a cylindrical extrusion tube used alone and supplemented with reducer (orifice). The focus of the experiments was to determine the effect of compression tube reducer on the value of the force of resistance FOP in the dry ice compression process. Its value can subsequently be used as the basis for establishing guidelines for designing and building machines for compression and pelletizing of dry ice.

The influence of the piercing punch profile on the stress distribution on its cutting edge

“…Technically, the punching process with a closed contour tool is a combination of the compression of the scrap and shearing of the material. Because of that it is possible to find some similar correlations between the geometrical parameters of the tools and the necessary force or torque in cutting [9] and agglomeration [10][11][12][13][14]. Since polymer composite belts may have various structures, the main resemblance can be found in natural polymers [9][10][11]15] and unclassical materials [12][13][14].…”

Testing of a force sensor used to measure the briquetting process parameters of lignocellulosic materials

“…Table 1. The balance of the total production and utilization of straw in the years 2010-2030 [ Compaction of materials enables the change of their mechanical and usable properties as well as transport and storage conditions [8][9][10][11][12][13][14][15]. The manufacturing of solid fuels calls for the utilization of proper compaction technique.…”

“…Pelletization utilizing roller technology calls for a finer breakdown of straw material. Whereas worm/screw-based compaction allows to compact cut straw with length from several to several dozen millimeters [8][9][10][11][12][13][14][15]. Fig.…”

Functional and construction indicator for the briquetting process of lignocellulosic materials

“…Powders and shredded materials need to be compacted to give them the appropriate geometrical form and mechanical properties [9][10][11][12][13][14][15]. The manufacturing of renewable solid fuel from broken down lignocellulosic materials requires proper preconditioning of the material, breaking it down, drying and mixing.…”