15.

Body Breaking – Fracture Traveling In An Angular Direction

The fracture originates in the gullet and immediately travels in an angular direction into the backing of band.
Probable Cause :

1. An excessive twist type of stress existed.
2. Guide arms spread to capacity causing excessive twist from band wheel to guides.
3. Guide arms spread too wide while cutting small cross sections.
4. Excessive back-up guide "preload".

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BACK TO BUTT WELD BREAKAGE