I. Hawking  residual stress relief is the most complete elimination of residual stress and stress produce the ideal way of limitation, other limitation methods to eliminate the residual stress as follows:

1 30 ~ 60% of the VSR

(2) thermally aged 35 to 80%

3 Haoke time 80 ~ 100%)

Two. Haoke welding residual stress stress relief of welded structure for the elimination of residual stress, fatigue strength of welded joints can be increased by 50% -120%, and 5-100 times to extend the fatigue life of metal resistance in corrosive environments corrosion