flash welding
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Definition
Noun: 1. A type of butt welding process: Flash welding is a resistance welding process that joins two metal pieces end-to-end. An electric current is passed through the workpieces, and they are brought together lightly. This creates an electric arc (or "flash") at the interface, which heats the metal to a molten state. The pieces are then forced together (forged) under pressure to complete the weld.
Usage
- General Use: The term is used specifically in industrial, manufacturing, and engineering contexts to describe this precise welding technique.
- Flash welding is commonly used for joining railway rails.
- The pipeline segments were connected using flash welding.
Advanced Usage
- Technical Specification: In technical documentation, the process parameters (such as current, flashing time, and upset force) are often specified.
- The procedure calls for flash welding with an upset force of 60 kN.
Variants and Related Words
- Flash butt welding: A full, synonymous term for the same process.
- Upset welding: A closely related resistance welding process, but without the intentional flashing action; the parts are held together under pressure from the start of the current flow.
Synonyms
- Flash butt welding: The most direct synonym.
- Resistance butt welding: A broader category that includes flash welding.
Related Phrases/Idioms
(This term is a technical compound noun and is not typically used in idiomatic expressions or phrasal verbs.)
Noun
- butt welding by creating an electric arc between the two pieces which melts and joins them; used for joining segments of metal pipe