Carbolite Gero

Carbolite Gero
The CARBOLITE GERO brand is synonymous with high quality, leading heat technology in the design and manufacture of laboratory and industrial ovens and furnaces ranging from 30 °C to 3000 °C and sold globally to over 100 countries.

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CARBOLITE GERO has intentionally designed their GPC range with retorts for 3D Additive Manufacturing to the highest specifications. They avoid the issues that are frequently experienced with furnaces from other manufacturers.

The most common issues reported by users with other furnaces are their inability to maintain an inert atmosphere, their requirement for large volumes of expensive inert gases or the need for extra equipment to remove the retort when loading / unloading parts. All of these detracting issues have been overcome by CARBOLITE GERO to ensure everyday operating costs for our customers are minimised; unwanted oxidisation is eliminated and temperature uniformity is “best in class”. Most importantly, production cycle times are significantly reduced thanks to heating on four sides, a forced cooling option and easy loading / unloading through our unique water-cooled silicon sealed swing out door.

To best demonstrate our capabilities, CARBOLITE GERO is now offering customer trials for any organisation wishing to validate a heat treatment process for their DMLS components. This paid-for testing is charged at just £800 per part and is fully refundable on placing an order for a CWF 13/65 or GPC 13/300 specified to a required AMS 2750F classification.


Many Additive Manufactured metal components require a heat-treatment solution with precise temperature uniformity. This ensures the manufactured parts adhere to the proper metallurgical properties of the selected metal alloy.

The heat treatment stage occurs in an inert (typically Argon) atmosphere to ensure the sintered part is not contaminated by oxygen molecules which can alter the chemical and physical properties (porosity) of the final component. This inert process must be repeatable with a well measured gas flow monitored to achieve an AMS 2750F Classification specified by the customer. In fact, in one specific example throughout the entire manufacturing process the atmosphere is maintained at <1000ppm (0.1%) oxygen which can be reduced to as low as 100ppm (0.01%) oxygen if a reactive metal such as titanium is employed.

The General Purpose Chamber furnaces from CARBOLITE GERO with Type B instrumentation meet the requirements of AMS 2750F Class 1 when used with an Inconel or Haynes 230 retort. Various sizes are available (Laboratory Furnace CWF 13/65 or Industrial Furnace GPC 13/131, 13/200, 13/300, 13/350 & 13/405) with capacities for between 1 and 4 build plates which are ideal for those involved in DMLS Additive Manufacturing.

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