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Heat Treatment

Controlled heat treatment for maximum safety

Heat treatment

Precision through heat treatment

Heat treatment is a precise process for specifically influencing material properties. Controlled temperature control can reduce stresses, stabilize the structure, and sustainably increase the service life of components.
Preparation & Analysis

Selection of the appropriate process, determination of temperature ranges and adaptation to material, area of ​​application and technical requirements.

Controlled warm-up & holding phase

Precise temperature control ensures defined changes in the material structure. The duration and intensity of the heat are precisely monitored.

Cooling & quality control

Targeted cooling processes ensure the desired material properties. Finally, the results are checked according to established standards.

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Heat Treatment Overview

Heat treatment includes various processes that are used specifically depending on the requirements.
More Details
Overall reduction of internal tension

Heat treatment can prevent cracks, warping and material damage.

Optimized material properties and characteristics

Strength, toughness and dimensional stability are specifically adjusted.

Increased process reliability and efficiency

Precise temperature control ensures reproducible and standard-compliant results.

Longer service life

Components remain resilient and reliable in use over the long term.

Standard conformity

All procedures are carried out according to recognized standards and guidelines.

Wide range of applications

Heat treatment can be used flexibly in industry, plant and pipeline construction.

Why Weldotherm WTD

Heat treatment for optimized material properties, safe processes and maximum component service life.

Preheating
The targeted heating ensures optimal preparation and reliable support of the welding process
Preheating
To accompany the welding process, we heat the material to the required temperature. For special steel alloys and specific application scenarios involving the components to be welded, accompanying, process-safe preheating is absolutely essential.
Stress relieving annealing (PWHT
Stress relieving annealing (PWHT) is used to reduce internal stresses in the workpiece, especially after welding.
Stress relieving annealing
To reduce the thermal stresses introduced by the welding process, we stress-relieve the affected components. Stress-relieving restores the structural properties required for the component's use and reduces the increased hardness values ​​caused by the welding process.
Hydrogen soaking
Soaking enables the reduction or elimination of hydrogen embrittlement in the workpiece.
Hydrogen soaking
To eliminate hydrogen embrittlement in the component, we heat the components to 200°C–300°C in a controlled manner and maintain this temperature for several hours. This is used to remove harmful hydrogen introduced during welding or galvanizing through heat treatment.
Normalizing
Normalizing is used to produce a uniform, fine-grained, rounded microstructure.
Normalizing
For steel castings, forgings, or welded structures, normalizing or normalizing annealing may be necessary to eliminate structural irregularities. The slow but controlled heating and cooling processes are monitored and carried out smoothly using our high-quality equipment.
Trace heating
Trace heating involves heating pipes with electrical heating cables to improve the flow properties of the medium.
Trace heating
In the process industry, various media transported through pipelines for further processing must be continuously and safely maintained at a certain temperature. With our process-safe equipment, we ensure that cooling and the associated potential damage do not occur.
Dehydration
Drying is used to remove residual moisture in working rooms and systems lined with fireproof material.
Dehydration
Whether combustion chambers, concrete-lined pipe joints, or other refractory linings – controlled drying is crucial for durability. We typically dry all components with our high-velocity gas burners.
Shrinking
Shrinking is the force-fitting connection and joining of two workpieces according to the principle of thermal expansion.
Shrinking
Components that are assembled with a planned interference fit during assembly are shrunk. Through the controlled application of heat, the outer component expands and can thus be bonded to the inner component. This ensures that the applied component sits tightly against the inner component.
Individual Requests
Together, we find a customized solution for our customers. Feel free to contact us!
Individual Requests
Beyond the conventional applications of various heat treatment methods, we find customized solutions for our customers. Whether it's the controlled and continuously monitored heating of large halls, ensuring the required ambient temperature for specific concrete projects, or even experimental work.
Contact us and receive individual advice!
Why heat treatment is used

Basic principle of heat treatment

Heat treatment enables the targeted adjustment of material properties through precisely controlled temperature cycles. This allows internal stresses to be reduced, microstructures to be influenced, and mechanical strength to be significantly improved. Since each material and weldment has different requirements, selecting the correct parameters requires many years of experience and in-depth expertise, as this is the only way to ensure reproducible results and maximum process reliability.

Heat treatment with responsibility and know-how for over 50 years.

Resistance, induction, or gas. We deliver the right solution for every geometry, every size, and every requirement.