crack in flange during welding
crack in flange during welding
(OP)
during welding of the following flange with A106 pipe, crack produces on flange with E/6010/7010 electrode, why?
flange isentification is
H/N G5247
ADO S/L 09147-2
3"-1/8 API 5K R-35X2-27 MIN BORE
XXS
P/N 142349-01-03-01 REV03 PAK
6A PS TUDD-NL EE-NL PSL1
6A-0553
04/09
flange isentification is
H/N G5247
ADO S/L 09147-2
3"-1/8 API 5K R-35X2-27 MIN BORE
XXS
P/N 142349-01-03-01 REV03 PAK
6A PS TUDD-NL EE-NL PSL1
6A-0553
04/09





RE: crack in flange during welding
Uneven heating produced thermal stresses and bingo
RE: crack in flange during welding
About all you can do with an existing flange is pre-heat pretty high ,like 400F or more.
The higher rated equipment (10,000/ 20,000 psi) was always a challange to mate to pipeline materials.
RE: crack in flange during welding
RE: crack in flange during welding
RE: crack in flange during welding
ps; did they come from a 3rd-world country????
RE: crack in flange during welding
dear friends
can any but tell me all these requirement like preheating by the refernce of code and standard and i want to know its chemical composition
regards
Jam Nauman
Moody International
RE: crack in flange during welding
RE: crack in flange during welding
"Thickness" of flange needs to be measured 'generously', i.e. tape measure thru hub on a slip-on flange; to include the Raised Face and the welding hub height. That's the actual amount of 'cold' steel giving your weld a cooling rate so fast that the weld is ripping itself apart.
RE: crack in flange during welding
Steels may also be mixed. We recently received some AISI 52100 alloy in lieu of carbon steel ordered and as marked from Vietnam. Needless to say, I scrapped the material.
RE: crack in flange during welding
thanks for your attemt to solve the issue
now as asking about wps, we have only a wps for p1 material
and i dont have MTC of these flange
i dont know about the classification of this material
so i want to know about this material either it is covering in P1 material or not
only the identification found on the flange is mentioned on the 1st top section of this page
see on the top
regards
Jam Nauman Anjum
RE: crack in flange during welding
Since you have their API License number, just search thru API's Composite list.
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