What is ‘Friction Welding (FW)’

What is ‘Friction Welding (FW)’?

The two workpieces are clamped to the friction welding machine. One is left fixed while the other is rotated at high speed, causing friction. Then, the friction surface becomes a state for bonding because of high heat (nearly 1,200℃). Then, the rotation is suddenly stopped and welded with pressure. It’s a brand-new solid state-bonding approach.

In conventional fusion welding, gas is mixed, generating bubbles in the weld joint. However, friction welding does not cause such defect because frictional heat and pressure are only used
  • 1 Clamp the workpieces to the spindle and table.
  • 2 Run the spindle at high speed and unclamp the table.
  • 3 Initiate material contact and generate friction heat.
  • 4 Stop the spindle and upset-press.
  • 5 Cut (option) the weld beads (flash) generated during hot pressing.
  • 6 Done

Realize the highest bonding strength among current welding technologies at low costs – Friction Welding

Critical welding in modern industry

The friction welding which has been praised as ‘cutting-edge technology’ in machine, metal, electric and electronic engineering has already been admitted as innovative welding technology in advanced countries such as the U.S., Japan and Germany. In the Republic of Korea as well, it’s been used in the production of automotive and heavy equipment parts, tools and machine parts.

With diverse friction welding facilities and accumulated knowhow, A.F.W is pioneering friction welding in domestic market.

Five features and advantages of friction welding

  • High-strength bonding

    Realizes high-strength bonding by perfectly bonding the two workpieces from their center to the outside with just a source of frictional heat

  • non-ferrous and dissimilar metal bonding

    Able to bond dissimilar metals and even non-ferrous and dissimilar materials in regular welding

  • Precision / Eco-friendly

    Automatable and high-welding accuracy with great weld reproducibility Eco-friendly with low CO2emissions

  • Diverse applications

    Applicable across industries including automobile, industrial machine, electric conductor, medical device, construction & civil engineering, aerospace and green energy

  • Cost reduction

    Able to reduce costs, using dissimilar materials and lower material costs through hollow workpiece welding