How to Calculate Torque in PSI for a Welding Application?

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SUMMARY

The discussion focuses on calculating torque in PSI for a welding application, specifically converting 250 ft-lbs of torque to PSI. The setup involves a cylindrical feature being welded, with a 0.75" cylinder and an air compressor set at 50 PSI. The bar length is approximately 1 ft, and the part is constrained with pins in a fixture, allowing for rotational movement. Participants are seeking a formula to facilitate this conversion for effective welding operations.

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  • Understanding of torque calculations in mechanical systems
  • Familiarity with pneumatic systems and PSI measurements
  • Knowledge of welding applications and requirements
  • Basic principles of rotational mechanics
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Welders, mechanical engineers, and technicians involved in welding applications requiring precise torque calculations and pressure settings.

Aldumoul
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The customer's print calls out 250 ft-lbs mininum on a weld. There was a gage built some time ago... The weld is used to mend a cylindrical feature after forming/stamping the part. There is a bar inserted into the part (part is constrained with pins into a fixture). And the other end of the part is pushed up with a 0.75" Cylinder. An air compressor is set at 50 PSI (someone previously converted to this). The length of the bar is 1 ft (close enough). The part is obviously on a rotational axis. Any ideas as to how one would set up a formula to convert the 250 ft-lbs to PSI?

PART-------------------
(bar) |---|
|_____|
(Cylinder)
 
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My "illustration" didn't turn out correctly. The cylinder is at the end of the bar.
 

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