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
B21C23/00—Extruding metal; Impact extrusion
B21C23/02—Making uncoated products
B21C23/04—Making uncoated products by direct extrusion
B21C23/14—Making other products
B21C23/16—Making turbo blades or propellers
Landscapes
Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
Electrical Discharge Machining, Electrochemical Machining, And Combined Machining
(AREA)