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Brazing Fixtures

Precision brazing fixtures for thermally stable joining results

LOT-TEK positioning tools ensure exact alignment before, during and after brazing

In high-temperature brazing processes, precise alignment of the components is essential for the quality of the joint. Brazing fixtures from LOT-TEK ensure maximum positional accuracy—from initial placement to final cooling. Especially in series production and complex assemblies, our fixtures reliably keep joining partners in their exact position. We use materials such as graphite or aluminum oxide, which are highly resistant to temperature and have minimal thermal expansion.

The closer the thermal expansion coefficient of the fixture matches that of the joining components, the more stable the assembly remains throughout the entire temperature cycle. This results in repeatable and process-reliable results, reducing both rejects and rework. Whether for vacuum brazing, protective atmosphere or induction soldering, our fixtures meet the highest demands for dimensional stability, material compatibility and industrial repeatability.

Learn more about our solutions in automotive, electrical engineering or aerospace and discover how LOT-TEK supports your application with precision fixture design.

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Reliable alignment – even under thermal stress

How LOT-TEK brazing fixtures secure geometry throughout the entire process

In high-temperature brazing or vacuum soldering, intense heat is applied not only to melt the alloy but also to affect the physical dimensions of the components. Especially in complex assemblies, it is essential that all parts maintain their exact predefined positions—during heating as well as cooling. LOT-TEK brazing fixtures are designed to ensure this alignment and prevent shifting of the joining partners.

The choice of material for the fixture is critical: materials like graphite and aluminum oxide offer excellent heat resistance and chemical inertness toward flux and solder. Just as important is their thermal expansion coefficient, which should match the parts being joined. This minimizes deformation or stress during the brazing cycle and secures reliable, repeatable results.

Our fixtures are manufactured according to precise technical drawings or developed individually to meet customer specifications. They combine thermal durability, geometric stability and practical usability—even for high-volume series production. This reduces misalignment risks and significantly cuts rework effort.

LOT-TEK brazing fixtures are used in various sectors, including medical technology, electronics and aerospace. Wherever reproducible joint quality matters, our fixture systems provide a decisive competitive edge.

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Application-specific materials for long-lasting performance

How the right fixture material improves accuracy and lifecycle

Selecting the appropriate fixture material is essential for brazing process reliability. Not all materials are suitable for high temperatures, aggressive fluxes or sensitive part geometries. At LOT-TEK, we rely on thermally stable and chemically resistant materials tailored to the application—such as graphite for high-heat applications and aluminum oxide for rigid, precise support structures.

By closely matching the thermal expansion coefficient between the fixture and the joining partners, mechanical stress and misalignment are minimized. This ensures repeatable brazing results and consistent quality, even in high-volume production. In addition to thermal stability, our fixtures are designed for multiple use cycles—providing long-term economic and process benefits.

Typical fields of application include automotive engineering, industrial tooling, medical devices and vacuum tube systems. In all these industries, dimensional tolerance, process consistency and minimal scrap rates are essential—and that’s exactly what LOT-TEK fixtures deliver.

We work closely with our clients to develop practical solutions that integrate seamlessly into existing workflows—whether for individual prototypes or full-scale production.

Contact LOT-TEK now to request your custom brazing fixture solution »