We are very pleased that our customer "Firma Rudolf Rieker GmbH" has won the Environmental Innovation Award of the German Federal Ministry for the Environment, Nature Conservation, Nuclear Safety and Consumer Protection (BMVU for short) for the steel hardening process we have developed with ultra-low temperatures of up to -80 °C. This process is also environmentally friendly.
What's more, this process is environmentally friendly and does not require the considerable energy input in production, transport and storage that the current industrial standard does.
Here, our solution can save between 50% and 70% energy compared to conventional processes while maintaining the same quality.
Currently, in a cryogenic treatment process of steel, liquid nitrogen is sprayed into a cold chamber and heated in the same furnace. This means that the entire mass of the furnace is always re-tempered. Our process uses a separate furnace for cooling and recovers the cold energy from the finished charge. In addition, instead of liquid nitrogen, we used Mirai Intex's MC22 O/W cold air chiller, which is many times more efficient than nitrogen at the temperatures.
According to Christian Kühn, Parliamentary State Secretary at BMVU, this promoted process can make an important contribution to greenhouse gas reduction, as well as avoiding nitrogen emissions.
In this article, the Cooling Post, you can read about our cooperation.