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 

After DCT the material retains its "new" features forever

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


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.

Can Industry
Pumps & Valves
Injection molding

Examples of industries we are active in

Machine construction
Injection Molding
Traffic & Transport
Can Industry
Pumps & Valves

Paper & Corrugated 


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Some examples of proof DCT parts in practice


Gear hobbing

metal: PM+HSS hobs with AJCrN coating


Increase of lifetime

With DCT: + 40 % more parts

before re-sharping


Turning of cement steel

hard metal inserts coated with cvd

Increase of lifetime

The number of manufactured parts with a sharp edge increased from 17 to 25

Performance of spring


metal: spring steel


Increase of lifetime

Standard : 800.000 cycles

With DCT: 1.200.000 cycles

springsDSC_0888 copy.jpeg
tube cutting.png

Tube cutting of steel tubes

metal: HSS incl. TiN saw disc


Increase of lifetime

Standard : 4000 cuts

With DCT: 8000 cuts

Hot forging of steel

Forging die 1.2344


Increase of lifetime

Standard 1430 parts average

With DCT 3550 parts before re-work

forging die .png
extrusion die.png

Steel extrusion die 1.4718

valves for automobile engines

steel 1.2365


Increase of lifetime

Average more than doubled

Die and punch cutting of magnetic steel sheets for electrical motors

Vanadis 10

Increase of lifetime

Standard : 100 %

With DCT: + 40 % more parts

die and punch.png
steel powder compaction.png

Compaction of steel powder for sintering parts

HSS punch


Increase of lifetime

lifetime doubled

Chain tree saw


Increase of lifetime

trippel before re-sharping

chain-saw-1-1024x768 copy.jpeg
cutter-knifes-2-1024x768 copy.jpeg

Knives for abattoir 

metal: 1.3343


Increase of lifetime

reduction of corrosion,

triple lifetime in use

Die and moulding parts


Increase of:

Dimension stability, no grow of material

wear resistance

 better release of material

die plates 7 copy.jpeg
cutting tools 3 copy.jpeg

Broaching tools

metal: powder metal HSS

Increase of lifetime

Significant according to the end-user

(NDA with user)

Knives for slitting cold working steel  

Increase of lifetime

Standard 6.116 meter avarage

after DCT 14.217 meters average

before re-sharping

circular-knifes-1024x576 copy.jpeg
welding tips.png

Welded union between CK15 and DD11

Copper alloy CuCoBe


Increase of lifetime

Standard 300 numbers of welding

With DCT1200 numbers of welding

Cutting and calibration of rings for bearing

M2 calibration punch


Increase of lifetime

standard number of punches 150.000

With DCT 380.000

callibration punch.png

audio cables high end

Cupper. silver and or gold


Increase of

Improvement of conductivity

and sound

metal wire cutting by friction

blades from ASP2030


Increase of lifetime

Standard 8,000 cuts

With DCT 24,000 cuts

cut of metal wire.png

Aerospace, Aluminium parts 

Reduction of stress


Above examples has been established by AZTERLAN Metallurgy Research Centre, Spain and CoolTech Austria in cooperation with their customers in France, Spain, Austria, Germany Belgium and the Netherlands