explosion welding
DESCRIPTION
Explosion welding is a solid-state process that produces a high velocity interaction of dissimilar metals by a controlled detonationTRANSCRIPT
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EXPLOSION WELDING
Group Member:Yoddy A. Nuhgraha, 23711301
Roy Faizal, 23711007Ethys Pranoto, 23111024
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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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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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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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COMPONENTS TERMINOLOGY
• Base component• Cladding metal• Flyer plate• Interlayer• Anvil• Standoff• Bond Window• Bonding Operation10/04/2023 5
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PROCESS
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PROCESS
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PROCESS
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PROCESS
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EXPLOSIVE MATERIAL
• High velocity (14750-25000 ft/s)– Trinitrotoluene (TNT)– Cyclotrimethylenetrinitramine (RDX)– Pentaerythritol Tetranitrate (PETN)
• Mid-low velocity (4900-47500 ft/s)– Ammonium nitrate– Ammonium perchlorate– Amatol
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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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• Detonation velocity is a function of–Explosive type–Composition of explosive–Thickness of explosive layer
WELDING PARAMETER
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APPLICATION
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• Can weld large areas of metal• Can weld inside and outside surfaces
of pipes• Transition joints can be made
APPLICATION
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• Chemical Processing• Petroleum Refining• Hydrometallurgy• Aluminum Smelting• Shipbuilding• Electrochemical• Oil & Gas
• Power Generation• Cryogenic Processing• Pulp & Paper• Air conditioning &
Chillers• Metal Production
APPLICATION
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APPLICATION
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APPLICATION
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APPLICATION
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APPLICATION
3” Diameter AI/SS Ring Copper/Stainless 12” UHV Assembly
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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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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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