Step-by-step TIG welding methods: dissimilar metals, purge setup, heat input and cleanroom practice.
Sugaring is crusty oxidation on the inside of a stainless weld. It cuts corrosion resistance and fails sanitary inspection. Here is the physics, the oxygen targets, a step-by-step argon back-purge setup, and the equipment list.
UHP gas lines need electropolished 316L tube, autogenous orbital welds and a clean purge. Here is what Class 100 means today and how manual and orbital TIG compare.
Thin stainless warps because it holds heat and expands more than carbon steel. Here is how to set amperage, calculate heat input and use chill blocks, pulse TIG and stitch welding to keep parts flat.
Use ER309L. Here is why its extra chromium and nickel survive dilution, how expansion and galvanic corrosion affect the joint, and a step-by-step TIG setup.
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