5-8 September 2022
Wyndham Grand Salzburg Conference Center
Europe/Vienna timezone

Carburizing atmospheres in heat-treatment furnaces - Contribution of industrial gases for reducing the carbon footprint

7 Sep 2022, 16:05
Room 1

Room 1

Oral Presentation Energy savings (process optimization, CO2-reduction, hydrogen) HEAT TREATMENT


Georg LEHMKUHL (Air Liquide Deutschland GmbH)


The 2050 carbon emissions targets aiming to limit the global temperature increase to 1.5°C are particularly impacting the industrial sector including heat-treatment processing with high energy intensity and significant needs of industrial gases. Thus the reduction of the CO2 emissions linked to heat-treating of metals is becoming critical and the related carbon footprint must be carefully evaluated for new investments as well as for retrofitting of production equipment.

Within heat treating, carburizing is one of the most important processes, widely used for surface hardening of low carbon steels. Usually carried out in batch or continuous furnaces, the related CO2 footprint of carburizing can be assigned to furnace heating energy, cooling and quenching energy, carburizing atmosphere generation, power consumption, peripheral devices and the processing itself.

This study presents an estimation of the CO2 footprint linked to different sources of furnace atmospheres used for atmospheric carburizing, like endogas and nitrogen/methanol and for different kinds of furnaces. A comparison with the low pressure carburizing process and the related CO2 footprint of the required hydrocarbon gas supply is then performed. Several solutions developed by Air Liquide to reduce the carbon footprint of heat-treatment atmospheres will be also presented.

Speaker Country Germany
Register for the Tom Bell Young Author Award (TBYAA)? No

Primary authors

Georg LEHMKUHL (Air Liquide Deutschland GmbH) Mr Roland FEILER (Air Liquide Austria GmbH) Dr Dawid NADOLSKI (Air Liquide Forschung und Entwicklung GmbH) Mr Laurent COUDURIER (Air Liquide Deutschland GmbH) Mr Jens MIRSCHINKA (Air Liquide Deutschland GmbH)

Presentation Materials

There are no materials yet.