TRI-ALLIANCE FABRICATING subcontracted VSR TECHNOLOGY to stress relieve a 28′ x 8′ x 1.5′ mild steel, welded Trunnion Base. The workpiece fabrication consisted of two (2) heavy-walled, rigid, 28′ beams joined by three (3) much lighter structural cross members. Such workpieces require more than one VSR Treatment to assure dimensional stability, since the two high-rigidity segments respond independently when vibrated.

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