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Extrusion is the deformation of either metal or plastic forced under pressure through a die to create a shape. Part of the Fundamental Manufacturing Processes Video Seriesthis unique program is an introduction to both plastic extrusion and metal extrusion processes.
The metal extrusion segment looks at hot extrusion, press components, lubrication, force capacity, and the metals that are typically hot extruded. Both warm and cold extrusion processes are featured, including indirect extrusion, combination extrusion, and impact extrusion.
The plastic extrusion segment explores components of the screw extrusion machine and common feedstock and materials. The two most prevalent plastic extrusion processes, profile extrusion and blown film extrusion, are also extensively detailed.
By Gary Conner
By George N Bullen FSME