The fatigue life of welded joints directly affects the service life of workpieces or equipment

in order to obtain high quality weld

extending the fatigue life of welds has always been a research hotspot. The concept of fatigue life is explained first

then analyzes the cause of fatigue fracture and the process of fatigue fracture. The methods

operation requirements and matters needing attention of improving the fatigue life of welded joints by adjusting key weld appearance details are emphasized. Five methods to improve the fatigue life are discussed in the paper

the ideal weld profiles

weld toe grinding

weld toe hammering

weld toe remelting

grinding the toes and hammering.