Method for checking electric arc burn defect in pipeline welding process

The present invention relates to an arc welding process in line one kind of acceptance burns defects method; for generating an arc burns at least one defect, the arc burns the most serious defect burned areas compared with the base surface of the projection is removed; crude grinding, fine grinding, polishing, etching burned areas; observation and analysis, thickness measurement and inspection, ultrasonic wall thickness measuring apparatus polished steel grinding burns wherein no minimum remaining wall thickness tresidual, the minimum allowable wall thickness tmix steel, and determines should excised and re-welding; most serious burns defect management section does not require removal, the remaining defects can acceptance, only the remaining polish defects burns, tissue removed can no burn characteristics; cut and re-welded if necessary, for the line the remaining defects require a new step 1) to step 8) acceptance of the remaining burn defects; this method economical, efficient and strong on-site operational, to ensure the progress and quality of pipeline construction.