A construction worker was killed Wednesday when a welding torch apparently ignited his clothes while he was working inside a steel drainage pipe at a construction site at Highway 29 in Napa. The man, ...

Engineers at OC Robotics and TWI built a snakebot capable of welding damaged or deteriorated pipes from the inside. Plenty of snake-inspired bots already exist—surgical bots are a good example—but ...

When welding large pieces of reactive metal, trailing shields keep the heat-affected zone under an argon shield. Welding titanium, stainless steel, and other reactive metals releases gases that cause ...