MIG weld for impact test @ -50 F
MIG weld for impact test @ -50 F
(OP)
Does someone has experience of using MIG weld ( ER70S-6 wire ) to make a coupon to pass impact test @ - 50F? I know that MIG is NOT usually used for low temperature pressure vessel. Did someone ever try it? Using what kind of shielding gas? Thanks.





RE: MIG weld for impact test @ -50 F
RE: MIG weld for impact test @ -50 F
RE: MIG weld for impact test @ -50 F
RE: MIG weld for impact test @ -50 F
To answer your question, yes I think some batches would make the test at -50, but consistanly, no they wont or the manufacture would have listed it as such.
Just my opinion.
RE: MIG weld for impact test @ -50 F
Do not attempt to use a filler metal at a MDMT less than the test temperature listed in the SFA specification, to which consumables must be certified.
"If you don't have time to do the job right the first time, when are you going to find time to repair it?"
RE: MIG weld for impact test @ -50 F
RE: MIG weld for impact test @ -50 F
Consider welding several fillet weld samples that are easily evaluated to ensure proper fusion to the base metal and between weld beads is ensured. Use those values to qualify the groove test assembly. Limit the welding parameters listed by the WPS to those that produce properly fused and acceptable welds.
Best regards - Al
RE: MIG weld for impact test @ -50 F
RE: MIG weld for impact test @ -50 F
RE: MIG weld for impact test @ -50 F
Could you please tell me more info regarding to your welding procedures using ER70S-6 at -50 F with the GMAW process, such as shielding gas for GMAW-S and GMAW-P, heat input etc... Thank you.
Best regards - Ken
RE: MIG weld for impact test @ -50 F
RE: MIG weld for impact test @ -50 F
Also, Could you please tell me same info using ER80S-Ni1. Thank you.
Best regards - Ken
RE: MIG weld for impact test @ -50 F
RE: MIG weld for impact test @ -50 F
But for short arc root, heat input should be much lower than 36 KJ/in, is it right?