METAL FLAW CORRECTION METHOD Russian patent published in 2006 - IPC B23P6/04 B23K15/08 

FIELD: metal working, namely correction of flaws of metals such as aluminum and its alloys, possibly in nuclear industry branch at making fuel elements, in machine engineering.

SUBSTANCE: method comprises steps of fusing flaw by means of electron beam along path in the form of eight-end star; providing variable according to cyclogram electric current values of beam, time periods of acting upon surface, frequency and amplitude of scanning. Decision unit provides control of said parameters according to demands for welding zone parameters such as depth of welding through, width of welded seam, depth of shrinkage recess in center of seam, trend of seam to occurring of shrinkage cracking. It is realized with use of model equations for each parameters of welding zone.

EFFECT: enhanced stability of quality characteristics, increased strength of welded seam, lowered number of rejections caused by welding process, flexible control in case of changing demands to welded seam.

2 cl, 5 dwg, 1 tbl, 1 ex