The simplest is hardness test and replica
From: Ali Asghari [asghariali@rocketmail.com]
Sent: 10/03/2010 20:32 PST
To: materials-welding@googlegroups.com
Subject: [MW:4530] evaluation of detrimental effect of straightening
Dear All
in my project a girder is fabricated from S355 K2+N(normallized heat treated for fine grain). after welding, a permanent distortion occured in it.
now distortion fixed with heating up to 300 c & hydrollic jack.
i know ,this temperature doesn't have significant effect. but how can i evaluate how much mechanical working affect on quality of plates & welds(especially on toughness & ductility& fatigue strength)?
another informations:
1- the type joint between web& flange is double bevel
2-thickness of web:20,thickness of flange:35
3-plate girder is used in primary frame
regards
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