Foundry Corporate News VDMA Member reports Topic Heat Treatment Topic Discharging, Decoring, Fettling, Finishing

Nabertherm GmbH

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Nabertherm GmbH

Nabertherm with 350 employees worldwide have been developing and producing industrial furnaces for many different applications for over 60 years. As a manufacturer, Nabertherm offers the widest and deepest range of furnaces worldwide.

150,000 satisfied customers in more than 100 countries offer proof of our commitment to excellent disign, quality and cost efficiency. Short delivery times are ensured due to our complete inhouse production and our wide variety of standard furnaces.


Product information


Tilting Crucible Furnaces K (Brick Insulation) and KF (Fiber Insulation), Electrically Heated, for Melting and Holding


Tilting Crucible Furnaces K (Brick Insulation) and KF (Fiber Insulation), Electrically Heated, for Melting and Holding. The electrically heated tilting crucible furnaces of the K and KF series are characterized by high melting performance with very uniform temperature distribution in the melt. Aluminum and brass can be melted in the 1200 °C version. The 1300 °C version can also be used to melt bronze alloys. For faster heatingup cycles in batch operation furnaces can be insulated with fiber resulting in lower heat storage (KF models).

  • K, KF../12 with maximum furnace chamber temperature of 1200 °C for aluminum or brass. Maximum bath temperature,depending on the condition of the crucible, between 1050 °C and 1100 °C
  • K, KF../13 with maximum furnace chamber temperature of 1300 °C also suitable for bronze alloys or brass, with a maximum melt temperature of 1200 °C
  • Heating from three sides using electric heating elements, radiating freely on carrier tubes, simple exchange of individual heating elements
  • Multistep wiring of the heating elements for furnaces with more than 50 kW electrical rating
  • Heating of furnaces up to 24 kW power rating controlled using longlasting, noiseless solidstaterelays
  • Heating of furnaces beyond 24 kW with contactors
  • High melting performance with uniform temperature distribution in the melt
  • Insulation constructed in multiple layers with lightweight refractory bricks on the hot face (K models)
  • Insulation constructed in multiple layers with fiber material in the side walls and corner bricks to support heating elements (KF models)
  • Crucible of claygraphite up to K 240, isostatically pressed claygraphite or SiC from K, KF 360 and up
  • Electrohydraulic tilting system with nonflammable ultrasafe hydraulic fluid
  • Safe, even, and precise pouring thanks to optimum pivot point in the furnace and manual throttling valve operation of the hydraulic system
  • Emergency outlet for safe draining of the melt in case of crucible breakage
  • No exhaust gas discharge needed
  • Integrated safety system which continues to operate the furnace at reduced power in case of malfunction in the bath thermocouple, in order to prevent the freezing of the melt
  • Overtemperature limit controller in furnace chamber for protection against overheating. The limiter switches the heating off when the set limit temperature is reached, and only switches it back on after the temperature has fallen again
  • Furnace chamber control with temperature measurement behind the crucible, recommended for melting


Crucible Furnaces TBR, Gas Fired with Recuperator Burner, for EnergySaving Melting and Holding


The gas or oil fired crucible furnaces of the TBR series are characterized by a high melting performance with the best possible energy utilization. They are perfectly suited for the melting of aluminum. Due to the use of a highperformance fan burner, which is feed with preheated air from a recuperator in the exhaust channel, energy consumption up to 25 % lower than conventional heating systems can be achieved.

  • TBR../11 with maximum furnace chamber temperature of 1100 °C for aluminum or zinc
  • Fuelfired with gas
  • Modulating burner control for optimum quality of the melt
  • Positive pressure in the furnace chamber keeps air out for highefficiency operation
  • Low energy consumption due to use of air preheated up to 250 °C by a recuperator in the exhaust channel
  • Gas system consisting of pressure regulator, gas filter, manometer, and solenoids
  • Low NOx emissions
  • Burner flame continuously monitored
  • Burner technology with servicefriendly construction, e.g. flame head easily removable when the burner is swung out
  • Burner technology manufactured in compliance with EN/DIN 746 part 2
  • High melting power due to powerful burner and highquality insulation
  • Side exhaust gas discharge with swing or flap lid, with the following features:
    • high melt quality due to lower burnoff
    • lower hydrogen absorption in the melt
    • reduction of power consumption due to swing lid in holding mode
    • Operator exposed to less heat in the area above the crucible

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