Longitudinal seam welding determines whether a shell, tank or pipe spool holds pressure and keeps its roundness. In the failures I have investigated, the cause usually appears before welding begins: uneven root gap, a drifted tack line, or a carriage that does not travel straight under load. For buyers and welding engineers planning pressure vessels, […]
American Welding Society standards shape how welding procedures, welder qualifications, and equipment parameters are written across structural, pressure vessel, and pipeline work. The AWS publishes consensus documents that define acceptable joint design, filler metal selection, inspection rules, and qualification records. Too many equipment buyers treat AWS compliance as a paper checkbox, but the practical question […]
Weld.com has grown into a substantial online resource for welders, fabricators, and welding supervisors. It combines video demonstrations, interviews, written articles, and podcast discussions that cover processes, equipment, career paths, and shop techniques. I have used parts of that library in my own work as an industrial welding automation engineer, not as a substitute for […]
A thin oxide film can stop filler metal from wetting a joint, and that is why liquid flux still has a place in welding, brazing, and soldering work. I have seen line operators reach for it as a quick fix, but the better approach is to treat it as a process control variable. Liquid flux […]
Laser beam welding process performance turns on power density. Once a focused beam exceeds roughly 1 x 10^6 W/cm², it forms a keyhole: a small vapor cavity surrounded by molten metal, which collapses behind the advancing beam and leaves a deep, narrow fusion zone. I have seen shops produce excellent battery enclosure welds with fiber […]
Flux core MIG welding earns its keep on the jobs where solid wire falls short: field repair, rusty plate, and structural work in open air. The process runs a tubular wire filled with flux, so the arc gets shielding without an external gas cylinder. I have seen shops overcomplicate this method, but the decision usually […]
Most homebuilt mini spot welders are built around a reused microwave oven transformer, and the first version either melts through the nickel strip or cannot hold a weld. I have seen the same pattern repeatedly: the current is there, but the control is not. A safe and useful spot welder needs three things: a controllable […]
Colored chalk for welding still earns its place on the cutting table because it marks fast, costs almost nothing, and disappears cleanly during welding. Over twelve years I have watched marking failures add more rework than bad welds. The difference comes down to formulation, surface preparation, and storage. This article breaks down colored chalk types, […]
Electro slag welding rarely gets the attention of arc based processes, yet for heavy vertical joints it changes the entire production calculation. I have watched shops struggle with multiple passes, distortion, and slow fit up on pressure vessel and storage tank work when a single pass ESW setup would have cut days from the schedule. […]
Used MIG welders for sale can cut startup costs, but the purchase decision should turn on duty cycle, repair history, and output stability rather than the asking price or a clean cabinet. The machines that fail after purchase are usually the ones that were inspected with a visual checklist instead of a load test. My […]