STRESS-STRAIN STATE OF WELDED JOINTS ON POLYMER PIPES PRODUCED BY BUTT WELDING AT AN ANGLE

摘要

The stress-strain state of butt welded joints made at different angles was studied, and distribution of equivalent stresses across the weld section was calculated. The ranges of angles to the lower generatrix in butt welding were determined, within which it is necessary to mount additional hold-down devices to level the existing gradient of stresses in the weld. A new technological solution was found in the form of a device for welding thermoplastic pipes, for which a patent of Ukraine was granted.