Explosive welding

Type of technology

Joining techniques

Development phase

advanced

Level of innovation

enterprise level

Scale of production

unit

Technology readiness level TRL

Description of the technology

Purpose of use

joining materials that cannot be joined by using any other method

Use in industry

chemical industry, energy (including nuclear power) industry, electrometallurgy, electrochemistry,

General characteristics

Explosive welding is a pressure welding process in which the surfaces of workpieces are joined by rapid contact using the energy of explosives or other sources of high specific energy. The method allows the joining of metals that cannot be joined by other methods (e.g. stainless steel and silver, copper and silver, etc.).

Alternative technologies
  • none

Visualisation

Advantages and disadvantages

Advantages

  • joining different metals
  • no heat-affected zone
  • versatility of application
  • environmentally friendly

Disadvantages

  • high cost
  • limited use
  • production constraints due to the use of explosive detonation energy

Workpiece material types

  • all material groups
  • ferrous metals
  • non-ferrous metals
  • non-ferrous metals alloys

Examples of products

  • connections of steel ship decks with aluminum superstructures
  • electrical cable connections
  • screen bottoms of heat exchangers
  • current contacts

Implementation of technology

Required resources

  • vacuum chamber
  • firing ground

Required competences

  • knowledge of materials science and chemistry

Environmental aspects

Water consumption

Energy consumption

Waste generated

Expert evaluation

Competitiveness

Usability

Environmental impact

Development centers

  • AGH University of Krakow
  • Opole University of Technology
  • Czestochowa University of Technology
  • Military University of Technology
  • Institute of Metallurgy and Materials Science of Polish Academy of Sciences
  • Warsaw University of Technology

Legal conditions

  • permission to use explosives
  • permission to use a firing ground

Companies using technology

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