Distinct Instrument shoulder surfaces were preliminary tested, namely a flat 1 and two conical types with 5° and ten°, respectively (Fig. 1b). The die chamber has an inside diameter of 15 mm pinpointing an extrusion ratio of 12.25. A thermocouple was embedded at the bottom center of the extrusion chamber https://andyliznb.actoblog.com/29838323/extrusion-for-dummies