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Penetration control system for TIG welding

Connect, no.86, May 1997, p.3

Thermal image of a weld

A novel method of analysing the thermal profile of autogenous TIG welds using an infrared sensor is being developed at TWI.

Work has shown that a top face monitoring and control system can compensate for changes in plate thickness from 1 to 3mm and can also detect misalignment and poor seam tracking.

This system is now ready to be developed from a prototype into a manufacturing tool.

Any company wishing to join the project can contact the Structural Integrity Dept at TWI. ( sid@twi.co.uk ).

For more information please email:


contactus@twi.co.uk