Title: Welding

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Q: Welding is a fabrication process that permanently joins materials, typically metals or thermoplastics, by using high heat, [...], or both to melt and fuse them together. A filler material may be added to strengthen the bond, and a shielding gas or flux protects the [...] from contamination. The result is a single, solid component with uniform mechanical properties, used in diverse industries from [...] and aerospace to DIY projects
A: pressure; molten metal; manufacturing