Back Purging Stainless Steel: How to Stop Sugaring and Heat Tint
How back purging protects the root of a stainless weld, what oxygen levels to aim for, and how to fix the heat tint you could not avoid.
Sanitary Tube Welding: What 3-A and ASME BPE Expect
What 3-A Sanitary Standards and ASME BPE require from stainless tube welds: penetration, finish, purge, borescope inspection and documentation, compared side by side.
Aluminum TIG Welding: Alloys, Filler Metal and Why Aluminum Cracks
A practical guide to aluminum TIG welding: alloy families, choosing 4043 or 5356, AC balance settings, porosity control, and the main reasons aluminum welds crack.