Method and preheating device for the manufacture of thermosetting parts

摘要

A process for producing duroplast components out of a pre- or non-cross linked powdery or granular duroplast, comprises pressing in a mould while applying heat, and then hardening. The powder or granular material is heated before pressing in a preheating unit (1). A process for producing duroplast components out of a pre- or non-cross linked powdery or granular duroplast, comprises pressing the duroplast (6) in a mould while applying heat, and then hardening by cross linking. The powder or granular material is heated before pressing in a preheating unit (1) by supplying heat up to a final pre-warming temperature. The latter is less than 30 [deg]C below the cross linking start temperature. The duroplast is mixed using a mixing unit. The prewarming temperature is controlled according to a threshold value. The mixing unit has stirring wings (4) The arrangement used includes a filling chamber (13), a sensor (30) and a cylinder unit (15).