The charge of aluminum alloys is loaded into the furnace through the open door. After heating-up, the operator opens the auxiliary door, picks one workpiece up through the door opening by clippers and transports it to the stamp unit. The operation is then repeated till the last workpiece. After that, a new batch is loaded.
Two thermocouples are installed in the furnace: an adjusting one and an emergency one. The adjusting thermocouple is connected to a measuring and adjusting unit and its feedback is used to control and adjust temperature. The emergency thermocouple is connected to a device which is intended for shutdown at a sharp temperature rise.
Distinctive features of the furnaces to heat workpieces for stamping are as follows:
· Advanced technologies and materials increase the service life of the furnace including heating elements and insulating materials.
· High temperature distribution uniformity in the whole volume of the working chamber.
· Possibility to adjust the rate of smooth heating and cooling workpieces being treated by means of a simple and operationally reliable programmer with a user-friendly interface.
· Rapid opening of the working entry by the hydraulic drive with the pedal switch.
