Furnace Annealing

Reliable annealing processes for components of any size

Furnace Annealing

Mature processes can be used worldwide

With over 50 years of experience, WTD offers flexible solutions for furnace annealing – from stationary heat treatment in Essen to mobile use worldwide, supported by gas and electric heating technology.

Technical Versatility

Use of high-speed gas burners and optional electric heating elements for controlled temperature management.

Stationary or Mobile

Heat treatment of large individual parts or many small parts – either at the Essen plant or flexibly worldwide using modular annealing furnaces.

Years of Experience

Over 50 years of expertise in temporary furnace construction and customized annealing processes.

Our Services - Your advantage

Furnace annealing

Furnace annealing offers numerous advantages that enable precise, flexible and efficient heat treatment of components of any size.

Flexible use

Components can be efficiently annealed either stationary in the factory or mobile worldwide.

Precise temperature control

State-of-the-art measurement and control technology ensures consistent heat treatment.

Universal applicability

The process is suitable for both large individual components and series of smaller parts.

Modular furnace construction

The systems can be installed quickly and flexibly adapted to different geometries.

Reliable procedures

Over 50 years of experience guarantee the highest process reliability.

Energy-efficient technology

The combination of gas and electric heating systems enables resource-saving processes.

Why Weldotherm WTD

Furnace annealing with experience, precision and flexible solutions – applicable worldwide.

Complete annealing

Furnace annealing for simple complete annealing of large individual components or large quantities of small components.

Complete Annealing

Complete annealing uses modern furnace technology to ensure uniform heating and controlled cooling of large or multiple small components. This reduces internal stresses, prevents material distortion, and ensures consistently high quality.

In-House in Essen

Stationary furnace annealing is possible at our Essen plant and offers precise heat treatment for components of any size.

In-House in Essen

In Essen, we anneal components weighing up to 7 tons in a 10 m³ furnace. High-speed burners ensure consistent temperatures, and flexible delivery allows for fast processing with complete documentation.

Mobile directly on site

Our individually assembled, temporary annealing furnaces are mobile and can be used directly on-site worldwide

Mobile direkt on site

The mobile annealing furnace is assembled on-site at your location. The furnace's modular design allows for variable size adjustments to suit the dimensions of the component to be treated. Furthermore, the furnace's modular design ensures quick assembly and disassembly by our experienced personnel.

Individual annealing medium

We perform annealing in the furnace using our high-velocity gas burners. In special cases, we also use electric heating elements.

Individual annealing medium

The furnace is operated using high-velocity gas combustion, which reaches a maximum operating temperature of 1200°C. Both propane and natural gas can be used as the fuel. Should a stationary gas supply not be possible, we can also arrange for the furnace to operate independently.

Modular oven

Our modular annealing furnace is used for the quick installation of even large furnace rooms – flexible, efficient and ideal for precise furnace annealing.

Modular oven

The modular and mobile annealing furnace is characterized by its high flexibility and can be individually assembled directly on-site. Thanks to its scalability, it can be precisely tailored to the dimensions and requirements of the respective component.

Extensive experience

With over 50 years of experience in temporary furnace construction, we offer customized furnace annealing solutions for every component size – no workpiece is too large or too complex.

Extensive Experience

With our many years of experience, we develop customized solutions for temporary furnace construction directly on-site. Depending on the requirements, we use electric heating elements or gas burners and reliably realize even large or complex workpieces using modular furnace systems and additional scaffolding.

What is possible with our annealing furnace

Furnace annealing - just the way you need it

Whether in-house at our Essen plant or stationary at the customer's site – our modular, mobile annealing furnace enables flexible and precise heat treatment on-site.

At our Essen plant, large components weighing up to 7 tons can be fully annealed. The 10 m³ furnace chamber offers sufficient capacity to process multiple workpieces simultaneously. Annealing is carried out using powerful high-velocity gas burners, which ensure precise and consistent temperature control. Components can be delivered flexibly by low-loader, freight forwarder, or by our own employees. Structured processes ensure fast processing, including complete documentation. Furthermore, each order is individually planned and implemented according to our customers' requirements.

Temporary furnace construction at our customers' sites is individually tailored to their specific requirements and enables precise on-site heat treatment. Depending on the situation and component, annealing is carried out either with electric heating elements or powerful gas burners. Even very large workpieces can be reliably treated using modular furnace systems or additional scaffolding. Integration into ongoing processes is guaranteed, as is rapid processing with complete documentation. Each order is planned and implemented precisely according to our customers' wishes.

The modular and mobile annealing furnace is characterized by its high flexibility and can be individually assembled and erected directly on site. Thanks to its scalability, it can be precisely tailored to the dimensions and requirements of the respective component. The individual modules, measuring 2.3 m × 2.3 m, allow for variable configuration and thus optimal adaptation to different geometries. It is operated using powerful high-velocity gas burners, with both natural gas and propane being suitable as energy sources. All components are delivered in standardized sea freight containers for transport, ensuring straightforward logistics. If required, we can also provide the complete gas supply – including vaporizers, gas tanks, and other infrastructure – directly on site.

The mobile annealing furnace is assembled on-site. The furnace's modular design allows for variable size adjustments to suit the dimensions of the component to be treated. In addition, the modular design of the furnace ensures quick assembly and disassembly by our experienced staff. The furnace is powered by high-velocity gas combustion, which reaches a maximum operating temperature of 1200°C. Both propane and natural gas can be used as the fuel. If a stationary gas supply is not possible, we can also ensure stand-alone operation of the furnace using a dedicated vaporizer and gas tank.

Why furnace annealing is used

Basic principle of furnace annealing

Furnace annealing is used for the targeted heat treatment of metallic materials to reduce internal stresses through defined temperature control and controlled cooling. This enables structural transformations that improve the homogeneity and toughness of the material. At the same time, hardness and strength can be specifically adjusted, formability increased, and the dimensional accuracy of components ensured. The process is therefore an essential process step for adapting material properties to the specific requirements of production and operation.

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.