Abstract: The present invention concerns a forming process for hot forming of a steel sheet of a rotor blade to be produced of a wind power installation, including the steps heating the steel sheet in a furnace while the steel sheet is lying on a hearth bogie, displacing the heated steel sheet with the hearth bogie from the furnace into a pressing apparatus for the hot forming operation, transloading the heated steel sheet in the pressing apparatus from the hearth bogie on to a form bogie having a counterpart form, and pressing the steel sheet by at least one pressing punch which presses on the steel sheet in such a way that it is formed between the pressing punch and the counterpart form and in particular assumes the shape of the pressing punch and the counterpart form.

Abstract: The present invention concerns a forming process for hot forming of a steel sheet of a rotor blade to be produced of a wind power installation, including the steps heating the steel sheet in a furnace while the steel sheet is lying on a hearth bogie, displacing the heated steel sheet with the hearth bogie from the furnace into a pressing apparatus for the hot forming operation, transloading the heated steel sheet in the pressing apparatus from the hearth bogie on to a form bogie having a counterpart form and pressing the steel sheet by at least one pressing punch which presses on the steel sheet in such a way that it is formed between the pressing punch and the counterpart form and in particular assumes the shape of the pressing punch and the counterpart form.

Abstract: A system for monitoring a distance between a relatively movable magnetically conductive shearbar and a magnetically conductive cutterhead in a forage harvester includes a permanent magnet and an induction coil which generates an electric signal corresponding to the distance and which is supplied to an evaluation circuit. The evaluation circuit separates the signal generated by the induction coil into a high frequency component and a low frequency component and forms a quotient therefrom.

Abstract: A method and a device for transmitting and for measuring resistance values, is particularly provided for use in motor vehicles, for the constant control of airbag systems. In the method and device an exciter signal coupled into a secondary-side resonant LCR circuit from the primary side via inductively coupled coils is interrupted, transmitted back to the primary side of the transformer and is there used for determining the resistance value by evaluating the time constant of the exciter response.