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B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
B21C33/00—Feeding extrusion presses with metal to be extruded ; Loading the dummy block
Procede et dispositif de fabrication et de separation de particules solides contenues dans un bain de liquide refrigerant dont les masses volumiques des deux phases liquide et solide sont de valeurs proches