CoolTech Industry,

specialist in Deep Cryogenic Treatment (DCT), offers,

productivity improvement extended lifespan

cost saving

benefits to your business and the

circular economy

Contributes to sustainable production and the circular economy

Complementary to the hardening and annealing process

Life time improvement

Changes the inner structure through a thermic process.

DCTs features

Processability

After DCT the material retains its "new" features forever

Deep cryogenic treated material can be processed without any adjustment to the production process

Environment

No use of chemicals or oils

No extra cleaning necessary before treatment

DCT process is low on energy

Longer life time = less use of natural resources!

What DCT offers

Improvement of abrasion resistance

Two metallurgic parameters govern the wear and tear of tools:

1. The transformation of retained austenite into martensite.

2. The structure and formation of so-called secondary carbide.

The DCT process disperses secondary carbide in a fine grain structure and distributes it more evenly throughout the workpiece. The lower the treatment temperature, the greater secondary carbide dispersion.

With hard metals such as tungsten carbide, we can see that DCT has a clear effect on the internal stress of the material. The binding agent naturally has a tensile stress. This tensile stress will be turned into compression stress by the DCT process. As a result of this change, the tungsten particles are retained better by the binding agent, escaping less easily.

Dimension stability

The DCT process stimulates the process of converting retained austenite into martensite, making the material dimensionally stable.

The conversion of retained austenite into martensite has consequences for the hardness of the material. Practice and research show that this differs per type of metal.

Increase of Conductivity

The DCT Multi stage process increases the thermal and electricity conductivity by 3 - 4 %.

Increase of HCF,

(High Cycle Fatigue)

Tests have shown that the CoolTech DCT Multi stage process increases high cycle fatigue of spring steel. It realizes an improvement of 10-15% compared to non-DCT treated spring steel

Reduction corrosion formation

During the last decade interest in deep cryogenic treatment (DCT) has grown because of successful new applications. The use of DCT treatments has a positive effect of corrosion reduction of carbonized steel, stainless steel and other materials.

For example, clients in the food processing industry, make use of DCT, not just to increase the lifespan of tools and reduce the effects of wear and tear, but also to improve their corrosion resistance. This constitutes a significant additional saving.

Reduction of stress

During the production of workpieces, components or tools, the thermal and mechanical processes create stress in the material. DCT strongly reduces stress in the material. DCT is commonly used on workpieces made of aluminium. Because it reduces stress in the workpiece, it prevents scrap of produced parts.

CoolTech treats on a regular basis Aerospace components

Process of Deep Cryogenic Treatment

With the selected programme the temperature is slowly reduced to around -180 °C. During the 15 to 24 hour process, the temperature may be

increased or decreased slightly at times to achieve the best results.

At the end the material will be returned to room temperature.

Depending on the material to be treated and any demands

of the client, it is also possible to increase the temperature up to +150°C for

a certain amount of time.

The material to be treated will not touch liquid nitrogen. We guarantee that the workpiece will not get a thermal shock.Thanks to the computer- guided and temperature-controlled process we can also guarantee a high degree of precision and repeatability.

*In cooperation with international research institutes and material suppliers, CoolTech has developed various programmes to achieve optimal DCT results for various materials.