Effect of Heat Input Rate on the Weld Defect Formation during High Frequency Electric Resistance Welding

고주파 전기 저항 용접부의 용접 결함 발생 빈도에 미치는 용접 입열 속도의 영향

In this study, effect of welding parameters on the defect density in the weldments produced by high frequency electric resistance welding process. The defect density measured by X-ray radiography showed a W-type curve as a function of heat input rate. The mechanisms of the such behavior were discussed based on the chemical compositions of the oxides formed at the weldments.