Crack in flange side when weld Flange CuNi to Tee CuNi
Crack in flange side when weld Flange CuNi to Tee CuNi
(OP)
Hi Friends,
Our project had serious problem. All weld joint between Pipe-CuNi to Flange-CuNi had defect crack in Flange side (Pipe side no problem). I would like give you some information to you give me advice:
Base: CuNi
Thickness: 7 mm
Welding Process: GTAW
Welding Consumable: ER CuNi, Lincoln LNT CuNi30
Backing Gas: 100% Agron
Preheat: Ambient (30 degree)
Max Interpass: 85 Degree
Heat input: 1-1.5 (Kj/mm)
PWHT: No
Parameter: 87-90 A, 10-13 V
Our project had serious problem. All weld joint between Pipe-CuNi to Flange-CuNi had defect crack in Flange side (Pipe side no problem). I would like give you some information to you give me advice:
Base: CuNi
Thickness: 7 mm
Welding Process: GTAW
Welding Consumable: ER CuNi, Lincoln LNT CuNi30
Backing Gas: 100% Agron
Preheat: Ambient (30 degree)
Max Interpass: 85 Degree
Heat input: 1-1.5 (Kj/mm)
PWHT: No
Parameter: 87-90 A, 10-13 V





RE: Crack in flange side when weld Flange CuNi to Tee CuNi
PipeTee-CuNi to Flange-CuNiRE: Crack in flange side when weld Flange CuNi to Tee CuNi
RE: Crack in flange side when weld Flange CuNi to Tee CuNi
http://www.lordtk.com/Flange/Flange-Flat-Flange-Tr...
RE: Crack in flange side when weld Flange CuNi to Tee CuNi
This is weld neck flange. Attach picture for you refer
RE: Crack in flange side when weld Flange CuNi to Tee CuNi
RE: Crack in flange side when weld Flange CuNi to Tee CuNi