VAcuum brazing

Brazing using silver, copper and nickel based solders

Brazing is a process that meets the advanced challenges of joining metallic and non-metallic parts. In brazing, the components are joined by heating the filler metal above its melting point which then forms a joint as it solidifies. Soldering provides unique advantages over other joining methods, including:

  • ability to join different combinations of materials (including metal to ceramic),
  • combination of materials with limited microstructural evolution,
  • forming joints of relatively high strength with high thermal and electrical conductivity.

Our group has extensive experience with vacuum brazing, such as silver, copper and nickel-based solders. We have also introduced brazing with ductile active solders (with titanium content) to join metals with brittle non-metallic materials. We have two vacuum furnaces with the technical parameters listed below.

Additional services

As part of contractual research, we provide the following additional services:

  • Leak detection of brazed components using the helium detector HLT 270 for joints.
  • Destructive defectoscopy of performed joints
  • Elemental analysis of EDX and SEM imaging in cooperation with Electron microscopy laboratories in ISI.

Equipment

Velká vakuová pec

Vacuum furnace PZ 810

Modernized vacuum furnace PZ 810 produced by fromer Tesla Rožnov. It is a vertical cylindrical furnace with a hydraulically raised recipient.

Malá vakuová pec

Laboratory vacuum furnace

In-house built laboratory furnace suitable for soldering and heat treatment of smaller components.

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