cold-weld: meaning, definition, pronunciation and examples
LowTechnical/Specialist
Quick answer
What does “cold-weld” mean?
To join two metals together by applying pressure without heating.
Audio
Pronunciation
Definition
Meaning and Definition
To join two metals together by applying pressure without heating.
The process or result of joining clean metallic surfaces through high pressure and plastic deformation at room temperature, which allows atoms to bond across the interface.
Dialectal Variation
British vs American Usage
Differences
Both variants use the hyphenated form 'cold-weld'. Spelling is identical. The term is equally technical in both dialects.
Connotations
Purely technical. No significant difference in connotation.
Frequency
Equally rare and specialised in both varieties. Primarily encountered in engineering, metallurgy, and space technology contexts.
Grammar
How to Use “cold-weld” in a Sentence
to cold-weld [metal surfaces] together[surfaces] cold-weld under pressurethe tendency of [materials] to cold-weldVocabulary
Collocations
Examples
Examples of “cold-weld” in a Sentence
verb
British English
- In a vacuum, aluminium components can cold-weld if they come into contact.
- The design prevents the gears from cold-welding together.
American English
- The satellites were carefully designed so that moving parts wouldn't cold-weld in orbit.
- They managed to cold-weld the copper plates using immense pressure.
adjective
British English
- A cold-weld joint was achieved between the two ultra-clean surfaces.
- The cold-weld phenomenon is a significant risk in space mechanisms.
American English
- The cold-weld bond proved stronger than the base metal itself.
- They performed a cold-weld test on the gold-plated connectors.
Usage
Meaning in Context
Business
Extremely rare. Possibly used metaphorically in high-stakes negotiations or mergers ('The two companies cold-welded their operations').
Academic
Used in materials science, engineering, and physics papers discussing metallurgical bonding or space hardware design.
Everyday
Virtually never used. Would require explanation.
Technical
Primary domain. Used precisely to describe a specific joining process, especially relevant in vacuum environments (e.g., satellite mechanisms, microelectronics).
Watch out
Common Mistakes When Using “cold-weld”
- Using it to mean any weld done on cold metal (it's a specific process).
- Confusing with 'cold solder', which is a faulty solder joint.
- Omitting the hyphen, making it ambiguous.
FAQ
Frequently Asked Questions
Yes, it is a true solid-state welding process where atoms bond across the interface. It is not adhesion or mechanical fastening.
In space technology (satellites, space stations) because the vacuum prevents oxide layer reformation, making metal surfaces prone to cold-welding on contact.
No. The pressures required for significant cold-welding between typical metals are extremely high, far beyond hand pressure, and surfaces must be impeccably clean.
No. The phenomenon has been known for centuries (e.g., in gold beating), but its understanding and technical application, especially for space, developed in the mid-20th century.
To join two metals together by applying pressure without heating.
Cold-weld is usually technical/specialist in register.
Cold-weld: in British English it is pronounced /ˌkəʊld ˈwɛld/, and in American English it is pronounced /ˌkoʊld ˈwɛld/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “(Metaphorical) Their partnership was like a cold-weld - formed under pressure, unbreakable.”
Learning
Memory Aids
Mnemonic
Imagine two pieces of metal in the COLD of space, being pressed (WELDed) together by a giant's hand.
Conceptual Metaphor
INTIMATE CONNECTION IS A PHYSICAL BOND; PERMANENT UNION IS WELDING.
Practice
Quiz
What is the primary condition required for cold-welding to occur?