The quality problems occur many times in the welding of electric heater parts of nuclear power pressurizer in a certain project

such as incomplete penetration of root and pits dimensions out of tolerance. In this paper

the welding quality problems of electric heater parts in pressurizer are analyzed and studied to find out the causes of defects

so as to improve the welding process or control measures

solve and avoid the recurrence of similar quality problems and ensure product quality.