what is the main reason of cracks
what is the main reason of cracks
(OP)
we find some cracks on tapered zone of welding neck flanges during hydrotest, what is the reason of cracks, it seams that the during forging of flanges there was lamination, how can we find the exact reason?
Thank you
Thank you





RE: what is the main reason of cracks
Laminations are manufacturing defects.
Weld cracks are often the result of incorrect welding procedures, poor welding material selections, welding incompatiable thicknesses, or incorrect pre/post heat & cooling control.
RE: what is the main reason of cracks
RE: what is the main reason of cracks
RE: what is the main reason of cracks
Forging defects can arise from either the ingot production stage (shrinkage, inclusions, segregations and laps), from the forging operation itself (bursts and laps) or from heat treatment (hairline cracks). Thermal stress cracks may be caused by inadequate degassing, improper heat treatment or localised heating during grinding. Positive I.D. of the cause of detected indications is the remit of the metallurgical laboratory.
RE: what is the main reason of cracks
Cheers
Adam Potter
Axiom Engineering Associates Ltd
www.ax-ea.co.uk
Adam Potter MEng CEng MIMechE
www.ax-ea.co.uk