We use a 5/16" thick 110 ksi min. yield hss material formed into a rectangle and resistance welded to form a frame rail. A pair of these tubes combined with cross members makes up a chassis. We are experiencing localized fracture in the throat of the weld initiating at the weld crown. Starts ductile and goes brittle. Looking at 350 Knoop hardness in the fusion zone. Has anyone experience such a failure?
Red Flag Submitted
Thank you for helping keep Eng-Tips Forums free from inappropriate posts. The Eng-Tips staff will check this out and take appropriate action.
Reply To This Thread
Posting in the Eng-Tips forums is a member-only feature.
Since the later 1980s, manufacturing companies have seen over 3 percent in labor output year on year, with most of this productivty enhancement occuring because of the optimization of repetitive tasks. Download Now