304 SS bulging
304 SS bulging
(OP)
Hello everyone,
Vertical plates which supports downwards trend of the flow in digester (pulp and paper making) has been bulged. Those bulges are quite large. The plates made of 304L SS. The temperature in this area falls between 300 - 320 F. Can anyone tell me what was cause for bulging to occur?
Thanks
Vertical plates which supports downwards trend of the flow in digester (pulp and paper making) has been bulged. Those bulges are quite large. The plates made of 304L SS. The temperature in this area falls between 300 - 320 F. Can anyone tell me what was cause for bulging to occur?
Thanks





RE: 304 SS bulging
RE: 304 SS bulging
And 304 has a large thermal expansion.
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P.E. Metallurgy, Plymouth Tube
RE: 304 SS bulging
RE: 304 SS bulging
RE: 304 SS bulging
RE: 304 SS bulging
RE: 304 SS bulging
"Nobody expects the Spanish Inquisition!"
RE: 304 SS bulging
Dirty slides or assemblies in the hangers or supports mean expansion joints that used to work jammed.
As mentioned, a transient or over-temp due to error or failure in another system (controller, pump, burner, flow meter, sensor, etc.) Things break that old.
RE: 304 SS bulging
My hunch in that either crud or a mild deformation caused binding, and then thermal expansion took over.
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P.E. Metallurgy, Plymouth Tube
RE: 304 SS bulging