A prototype PHdW 250 double-action press (dies closing force up to 2500 kN) was used for single-operation forming of automotive star-pieces (10 mm in diameter) by cold radial extrusion. The PA2 aluminium and 10 or 15 HGM steel rods (30 mm to 32.5 mm in length, 16.5 mm in diameter) were used as preforms in the study. Zinc stearate or molybdenum disulphide were used as greases. The steel surface was additionally phosphatized. The product quality confirmed the design assumptions for the technological process and the performance of the prototype press. Micro- and macrostructures of the formed material were shown on photographs.
Wyciskanie promieniowe na zimno krzyzaka samochodowego
Eine Radialkaltfließpressen von Autokreuzstücken
Cold radial extrusion of automotive star-piece
Obrobka Plastyczna Metali ; 10 , 2 ; 27-34
1999
8 Seiten, 14 Bilder, 2 Tabellen
Aufsatz (Zeitschrift)
Polnisch
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