solidifiction crack and lower impct value
solidifiction crack and lower impct value
(OP)
Hello all, now i have facing problem of solidiction crack and lower impact value. we have pipe order of 36inch dia and 44mm thickness . our process of sawpipe welding is first doing gmaw on od longitudinaly then three wire tandam saw welding in inside and then outside of pipe longitudinally and impact requirment at -20c avg 105 in api 5l x65m grade pipe. we are facing problem of solidifiction crack and lower impact about 40j. and we are weld same grade pipe with same consumable of thick 23mm we geting 164j impact at -20c and no solidification crack. how it possible?..





RE: solidifiction crack and lower impct value
RE: solidifiction crack and lower impct value
RE: solidifiction crack and lower impct value
RE: solidifiction crack and lower impct value
Because we prepare double v bevel groov so first we done inside saw three wir tandam welding and then we do outside of pipe. distance between inside and outside welding machine is 36meter.
so max I can achieve is 130c.
RE: solidifiction crack and lower impct value
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
All answers are personal opinions only and are in no way connected with any employer.
RE: solidifiction crack and lower impct value
RE: solidifiction crack and lower impct value
thanks for ur guidances.