The document discusses explosion welding, which uses a controlled detonation to join dissimilar metals at high velocity. It has advantages over conventional welding like minimizing heat-affected zones and melting. The process involves detonating an explosive between a base component and cladding metal, using a flyer plate and anvil. Parameters like explosive type and thickness affect the detonation velocity. Explosion welding has applications in various industries for tasks like pipe welding. A brief history is also provided.
How to Manage Notification Preferences in the Odoo 17
Explosion Welding
1. EXPLOSION WELDING
Group Member:
Yoddy A. Nuhgraha, 23711301
Roy Faizal, 23711007
Ethys Pranoto, 23111024
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2. WARNING
• These slides have not been extensively proof-read,
and therefore may contain errors.
• If you note a mistake or a missing citation, please let
us know and we will correct it.
• We hope to add commentary in the notes section of
these slides, offering additional details. However,
these notes are incomplete so far.
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3. DEFINITION
Explosion welding is a solid-
state process that produces a
high velocity interaction of
dissimilar metals by a
controlled detonation
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4. ADVANTAGES
• No heat-affected zone (HAZ)
• Only minor melting
• Material melting temperatures and
coefficients of thermal expansion
differences do not affect the final product
• The shock front compresses and heats the
explosive material which exceeds the
sonic velocity of undetonated explosives
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5. COMPONENTS TERMINOLOGY
• Base component
• Cladding metal
• Flyer plate
• Interlayer
• Anvil
• Standoff
• Bond Window
• Bonding Operation
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11. DETONATION TYPES
– Shock wave develops if sonic velocity is greater than 120%
of material sonic velocity (type 1)
– Detached shock wave results when detonation velocity is
between 100% and 120% of material sonic velocity (type 2)
– No shock wave is produced if detonation velocity is less
than material sonic velocity (type 3)
Type 1 Type 2 Type 3
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12. WELDING PARAMETER
• Detonation velocity is a function of
–Explosive type
–Composition of explosive
–Thickness of explosive layer
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20. HISTORY
• Arnold Holtzman and a team at DuPont in Delaware put a lot
of research into developing the process.
• Holtzman filed for a US patent in 1962 for explosion welding,
received the patent in 1964 and began commercial production
of bi-metallic explosion welded clad in 1965.
• Detaclad licensed the process and was bought by Dynamic
Materials Corporation (DMC).
• Other companies have merged with DMC and acquired the
current name DMC Groupe SNPE making them a worldwide
company.
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21. References
• Keith Powell, Michael Fernandez, Staton Burrell,
“Explosion Welding” the slide, University of South
Carolina
• Brigitte Blechinger, ‘’Clad Pipe’’, Butting.
• Ulrich Kruger, ‘’Talat Lecture 4400’’, TALAT.
• G. Young, ‘’Explosion Welding, Technical Growth &
Commercial History’’, Dynamic Materials Corporation,
USA.
• Henry Tan, ‘’Explosive Welding ’’.
• ASM Metals Handbook, Vol 06 “Welding, Brazing, and
Soldering”
• David Cutter, “What You Can Do With Explosion
Welding”, Welding Journal.
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Editor's Notes
Base component Joined to cladderRemains stationarySupported by anvilCladding metalThin plate in direct contact with explosivesCan be shielded by flyer plateFlyer plateSacrificial plate placed between explosive material and cladder plateUsed to protect cladder metalInterlayerThin metal layerEnhances joining of cladder to base plateAnvilSurface of which the backer rests during explosionStandoffDistance between cladder and base plate before explosionBond WindowA range of variable in process such as velocity, dynamic bend, and standoff distance that result in successful weldBonding OperationDetonation of explosives that result in a weld
Type 1Material behind shock wave is compressed to peak pressure and densityCreates significant plastic deformation locally and results in considerable ‘shock hardening’Type 2 & 3Pressure is generated ahead of collision point of metalsWhen subject to large pressures, metal ahead of collision point flows into spaces between plates and takes form of high-velocity jetEffaces material and removes unwanted oxides and other unwanted surface filmsNo bulk diffusion and only localized melting