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logo Stirweld France 2021
  • Stirweld Products
    • FSW HEADS
      • FSW standard head V3
      • FSW head with retractable pin
      • FSW Spindle for robot
      • Stirweld FSW machine
    • FSW TOOLS
      • High strength aluminium
      • Standard aluminium
      • Aluminium silicon
      • Aluminium steel
      • Aluminium copper
      • Stirweld Tool Holder
      • FSW tools catalogue
    • FSW ACCESSORIES
      • Temperature measurement
  • FSW Services
    • FSW prototyping
    • FSW clamping system
  • FSW Technology
    • FSW process
    • Principles & Trends
  • FSW Applications
    • Liquid cold plates
    • Heat sinks for e-mobility
    • Aluminium tank
    • Copper applications
    • FSW stiffened panels
    • Other FSW applications
    • FSW Applications
  • FSW resources
    • ARTICLES
      • FSW: a cost-killer in the aeronautics industry
      • How to choose FSW tool for my application
      • 4 essential elements for high quality FSW welding
      • More
    • WHITE PAPERS
      • Thermal Management: FSW liquide cold plate
      • FSW x Rheocasting
      • FSW Water heat sink for e-mobility
      • More
    • WEBINARS
      • FSW: all you need to know about aluminium welding
      • Thermal management: liquid cold plate & FSW
      • FSW: die casting heat sink for e-mobility
      • More
    • VIDEOS
      • FSW spindle for robot
      • Liquid cold plates welded by FSW
      • Satellite thermal Management
      • More
  • About
    • Who is Stirweld
    • FAQ
  • Contact
  • EnglishEnglish
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FSW CLAMPING JIG

want to know more

FSW clamping jig

Clamping system has a huge impact on your weld quality and production rate, so we offer you our know-how for jig design.
Each clamping jig is unique, and requires a high expertise that we are able to provide.

How to clamp your parts during a FSW process?

clamping jig for friction stir welding

We first design and manufacture a backing (anvil) that is placed under the part during FSW to support FSW vertical load.
Then we design and manufacture the clamping system to hold the part during welding, providing a 3-axis blocking: a good clamping system permits to avoid part opening, dragging and lifting, which is essential for a good weld quality.

Interested in finding out how it works in detail?

Read our article on Clamping System

Read now

There is a risk that the parts can break or collapse if the forging force is not well handled. The backing of the clamping jig must resist the heat generated by the welding. The right choice of the backing material is key.

The mechanical stops are designed in order to avoid the parts to slip and/or diverge during the Friction Stir Welding process. Moreover, specifics clamps also are put in place to deal with the eventual lifting of the parts.

clamping jig in FSW

Example of welding jig (6 mm 5186)

Clamping jig FSW machine

Example of clamping system on a special FSW machine designed for large thicknesses

A clamping system designed to conceive a 12 mm thick, 3 metre long workpiece by FSW. Three parts are clamped on the clamping jig, which is clamped to the machine table, then two welds are carried out.

The two main elements of the clamping system are:

Welded mechanical bridges

They allow the part to be pressed against the anvil and the jig during welding.

We have a bridge on each side to press on the part at the level of the 2 welds to be made.

Mechanical stops

These hold the parts on the sides to prevent them from moving in the x- and y-axis and avoid gaps between the parts during friction stir welding.

There are two clamping system types :

Manual

Small batches and prototypes

Automatic

Large series

friction stir welding: automatic jig design

Automatic jig

Interested in learning more about clamping jigs?

Follow our webinar on clamping jig design

Contact now

FSW is now accessible


More than an FSW supplier, Stirweld is also a partner for your FSW projects: studies, qualifications, training, FSW heads for MOCN & tools. Expertise and advice in addition. We accompany you all over the world and help you to implement this new technology. Contact us Stirweld sur Linked in Stirweld sur Twitter Youtube Stirweld
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