Method of hermetical joining of ultra-thin metal foil to vacuum flange

Photo: Ing. Jaroslav Bruncko, PhD.

The solution is based on indirect laser welding, where ultra-thin metal foils are welded to the vacuum flange by the laser beam indirectly through the cover ring which is substantially thicker than the ultra-thin metal foil.

Competitive advantage

  • weld strength – the laser weld is narrow with a favorable depth-to-width ratio and higher strength;
  • heat affected zone – the heat affected zone is limited and due to the rapid coolingthe surrounding material is not annealed;
  • precision of use – small dimensions and precise manipulation with the concentrated laser beam enables precise welding of miniature products;
  • contactless technology – there is no contact between the material and the laser source;
  • one-sided welding – laser welding can replace spot resistance welding, while it needs access to the weld only from one side;
  • waste – laser welding is easy to control and produces minimal waste.

Use of technology

  • in the production of fine medical instruments and implants, electronic components with special magnetic properties, elements of pressure detectors, targets in nuclear physics and other related fields.

Protection of intellectual property

  • Registered utility model: (SK)