Technical heat treatment

We have been offering various heat treatment technologies since 1940. Our experienced, professional team masters a wide range of production processes. We process series and individual parts and support customers with engineering as well as with new products and projects.

Wärmebehandlung Klingnau AG emerged from the former local Full Service business unit of ABB Schweiz AG (formerly BBC) and the former Unifer. The legal entity Wärmebehandlung Klingnau AG was founded on December 1, 2016.

Our range of services includes the heat treatment of metals and non-ferrous metals according to individual customer requirements.

Hardening and tempering, annealing

Technical heat treatment of steel optimizes its hardness and strength through targeted temperature control. Klingnau Heat Treatment AG offers specialized processes for this purpose using inert gas.

Aluminum tempering

Aluminum impresses with its low weight, high strength, and good thermal conductivity, particularly in the aerospace and automotive industries. Targeted heat treatment processes can optimize mechanical properties such as hardness, strength, and corrosion resistance – from solution annealing to quenching and hardening.

Surface treatment nitrocarburizing

Nitrocarburizing and nitriding are proven processes for surface hardening steel and improve wear resistance, corrosion resistance, and sliding properties. Particularly in mechanical engineering and toolmaking, they ensure long-lasting, resilient components with minimal distortion.

Vacuum technology - soldering

Our high-vacuum furnace system enables oxidation-free annealing, hardening, and high-temperature brazing without flux. Thanks to precise process control, we create mechanically highly resilient and vacuum-tight joints – ideal for materials such as copper, stainless steel, and ceramics.