APPARATUS FOR RELEASING STRESSES OF WELDED JOINTS OF CARRYING STRUCTURES OF MACHINES AND FOR INCREASING THEIR STRENGTH Russian patent published in 1999 - IPC

FIELD: welded joint treatment. SUBSTANCE: apparatus includes housing with percussion action drive unit for reciprocation motion. Drive unit is connected with striker block. Adjacent strikers of block are arranged at constant lateral contact one with another and with possibility of independent motion of each striker. Ratio of rounding radius of working end of each striker to its cross section radius or radius of circle described around its cross section is 1.5-10. Ratio of area of striker block cross section to striker cross section area is no less than 7. EFFECT: enhanced efficiency of apparatus, optimization of working time period, high quality of welded joint treatment. 2 dwg