Скачать или смотреть PWHT Explained – Part 2 | How Post Weld Heat Treatment Reduces Residual Stresses

Did you know that even the strongest welds can secretly hide dangerous internal forces?
In today’s video, we’ll talk about how PWHT helps reduce residual stresses — and why that matters more than you think.

"During welding, the metal heats up, expands, and then suddenly shrinks as it cools.
But this doesn’t happen evenly — and the result is internal stress trapped inside the metal.

"These residual stresses might be invisible, but they’re dangerous.
They can cause cracks, distortion, or even catastrophic failure over time — especially under pressure or in harsh environments

"Post Weld Heat Treatment is a controlled heating process.
We bring the metal to a specific temperature and hold it — this allows the trapped stresses to relax and redistribute

"The result? A more stable, safer material — free from dangerous residual forces.
It’s stronger, more reliable, and ready for real-world service

"Residual stress is a silent threat — but PWHT is the solution.

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