关键词: 侧弯, 冲击值, 内耗, 振动调制

Abstract: The vibratory welding conditioning process is investigated in the electroslag welding of blast furnace steel. The metallographs show that a refined joint is produced. The residual stress, side bend property, tension and impact tests are carried out in different vibratory conditions (0g, 0.3g and 0.6g). The results of the test have fully proved that vibratory conditioning technology can effectively reduce residual stress and improve the comprehensive properties of weld joints. Especially, in the 0.6g vibratory condition, the qualification rate of side bend performance is up to 100%. The impact values at two vibratory accelerations (0.3g and 0.6g) are compared and the changing mechanism is discussed. The internal friction test indicates that the internal friction SKK (Snoek-Ke-Koster) peak of the weld metal has good correlation with the impact value of the weld.

Key words: Impact value Internal friction, Side bend, Vibratory conditioning