Abstract: The invention relates to a heating device (1), in particular an in-line heater, for heating rod-shaped, electroconductive workpieces (13), in particular metal rods and/or non-ferrous metal rods which are conveyed along a conveying direction (R) through the heating device (1), the heating device (1) having a first heating module (2) in relation to the conveying direction (R), the first heating module (2) having a first input area (4) and a first output area (5), and a second heating module (3) in relation to the conveying direction (R), the second heating module (3) having a second input area (6) and a second output area (7).

Abstract: A device for preheating rod-like, metal workpieces, in particular aluminium rods, by means of a fluid flow heated by residual heat or waste heat of a combustion process occurring in a heating device for heating the workpieces. The device has a preheating chamber for receiving at least one workpiece, wherein, in order to transfer the heat from the fluid flow to a heat transfer medium flow in a fluid flow line between a fluid flow connection and the preheating chamber, a heat-exchanger unit is provided in such a way that the workpiece is preheated indirectly via the heat transfer medium flow heated in the heat-exchanger unit by the fluid flow.

Abstract: A device for preheating rod-like, metal workpieces, in particular aluminium rods, by means of a fluid flow heated by residual heat or waste heat of a combustion process occurring in a heating device for heating the workpieces. The device has a preheating chamber for receiving at least one workpiece, wherein, in order to transfer the heat from the fluid flow to a heat transfer medium flow in a fluid flow line between a fluid flow connection and the preheating chamber, a heat-exchanger unit is provided in such a way that the workpiece is preheated indirectly via the heat transfer medium flow heated in the heat-exchanger unit by the fluid flow.

Abstract: In the case of a device (1) for preheating objects (S), particularly aluminum strands, rods, or pins, which device precedes a furnace (2) for the actual heating of the objects (S), and in which device preheating takes place using waste gases of the furnace (2) for actual heating of the objects (S), it is provided that the device has a housing (5) that is configured in the manner of a magazine, to accommodate and preheat multiple objects (S) simultaneously, as a supply, which objects can be passed to the housing (5) by way of a closable inlet opening element (7) and can be removed from it again analogously, preheated, by way of a closable outlet opening element (9), whereby the waste gases of the furnace (2) for actual heating of the objects (S) get into the housing (5) by way of at least one feed channel (3), to preheat the objects. The device (1) is furthermore integrated into a system (A) for processing the objects (S).