Download - EXPLOSION WELDING - AASTMT
![Page 1: EXPLOSION WELDING - AASTMT](https://reader030.vdocuments.mx/reader030/viewer/2022012508/6185a1805ae90277fe1956d3/html5/thumbnails/1.jpg)
EXPLOSION WELDING
18/07/2017 1
![Page 2: EXPLOSION WELDING - AASTMT](https://reader030.vdocuments.mx/reader030/viewer/2022012508/6185a1805ae90277fe1956d3/html5/thumbnails/2.jpg)
DEFINITION
Explosion welding is a solid-state
process that produces a high velocity
interaction of dissimilar metals by a
controlled detonation.
18/07/2017 2
![Page 3: EXPLOSION WELDING - AASTMT](https://reader030.vdocuments.mx/reader030/viewer/2022012508/6185a1805ae90277fe1956d3/html5/thumbnails/3.jpg)
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
18/07/2017 3
![Page 4: EXPLOSION WELDING - AASTMT](https://reader030.vdocuments.mx/reader030/viewer/2022012508/6185a1805ae90277fe1956d3/html5/thumbnails/4.jpg)
COMPONENTS TERMINOLOGY
Base component
Cladding metal
Flyer plate
Interlayer
Anvil
Standoff
Bond Window
Bonding Operation
18/07/2017 4
![Page 5: EXPLOSION WELDING - AASTMT](https://reader030.vdocuments.mx/reader030/viewer/2022012508/6185a1805ae90277fe1956d3/html5/thumbnails/5.jpg)
PROCESS
18/07/2017 5
![Page 6: EXPLOSION WELDING - AASTMT](https://reader030.vdocuments.mx/reader030/viewer/2022012508/6185a1805ae90277fe1956d3/html5/thumbnails/6.jpg)
PROCESS
18/07/2017 6
![Page 7: EXPLOSION WELDING - AASTMT](https://reader030.vdocuments.mx/reader030/viewer/2022012508/6185a1805ae90277fe1956d3/html5/thumbnails/7.jpg)
PROCESS
18/07/2017 7
![Page 8: EXPLOSION WELDING - AASTMT](https://reader030.vdocuments.mx/reader030/viewer/2022012508/6185a1805ae90277fe1956d3/html5/thumbnails/8.jpg)
PROCESS
18/07/2017 8
![Page 9: EXPLOSION WELDING - AASTMT](https://reader030.vdocuments.mx/reader030/viewer/2022012508/6185a1805ae90277fe1956d3/html5/thumbnails/9.jpg)
EXPLOSIVE MATERIAL
High velocity (14750-25000 ft/s)
◦ Trinitrotoluene (TNT)
◦ Cyclotrimethylenetrinitramine (RDX)
◦ Pentaerythritol Tetranitrate (PETN)
Mid-low velocity (4900-14750 ft/s)
◦ Ammonium nitrate
◦ Ammonium perchlorate
◦ Amatol
18/07/2017 9
![Page 10: EXPLOSION WELDING - AASTMT](https://reader030.vdocuments.mx/reader030/viewer/2022012508/6185a1805ae90277fe1956d3/html5/thumbnails/10.jpg)
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)
18/07/2017 10
Type 1 Type 2 Type 3
![Page 11: EXPLOSION WELDING - AASTMT](https://reader030.vdocuments.mx/reader030/viewer/2022012508/6185a1805ae90277fe1956d3/html5/thumbnails/11.jpg)
Detonation velocity is a function
of:
◦ Explosive type
◦Composition of explosive
◦Thickness of explosive layer
18/07/2017 11
WELDING PARAMETERS
![Page 12: EXPLOSION WELDING - AASTMT](https://reader030.vdocuments.mx/reader030/viewer/2022012508/6185a1805ae90277fe1956d3/html5/thumbnails/12.jpg)
APPLICATIONS
18/07/2017 12
![Page 13: EXPLOSION WELDING - AASTMT](https://reader030.vdocuments.mx/reader030/viewer/2022012508/6185a1805ae90277fe1956d3/html5/thumbnails/13.jpg)
Can weld large areas of metal
Can weld inside and outside
surfaces of pipes
Transition joints can be made
18/07/2017 13
APPLICATIONS
![Page 14: EXPLOSION WELDING - AASTMT](https://reader030.vdocuments.mx/reader030/viewer/2022012508/6185a1805ae90277fe1956d3/html5/thumbnails/14.jpg)
• Chemical Processing
Petroleum Refining
Hydrometallurgy
Aluminum Smelting
Shipbuilding
Electrochemical
Oil & Gas
Power Generation
Cryogenic Processing
Pulp & Paper
Air conditioning & Chillers
Metal Production
18/07/2017 14
APPLICATIONS
![Page 15: EXPLOSION WELDING - AASTMT](https://reader030.vdocuments.mx/reader030/viewer/2022012508/6185a1805ae90277fe1956d3/html5/thumbnails/15.jpg)
APPLICATIONS
18/07/2017 15
![Page 16: EXPLOSION WELDING - AASTMT](https://reader030.vdocuments.mx/reader030/viewer/2022012508/6185a1805ae90277fe1956d3/html5/thumbnails/16.jpg)
APPLICATION
18/07/2017 16
![Page 17: EXPLOSION WELDING - AASTMT](https://reader030.vdocuments.mx/reader030/viewer/2022012508/6185a1805ae90277fe1956d3/html5/thumbnails/17.jpg)
APPLICATIONS
18/07/2017 17
![Page 18: EXPLOSION WELDING - AASTMT](https://reader030.vdocuments.mx/reader030/viewer/2022012508/6185a1805ae90277fe1956d3/html5/thumbnails/18.jpg)
APPLICATIONS
18/07/2017 18
3” Diameter AI/SS Ring Copper/Stainless 12” UHV Assembly
![Page 19: EXPLOSION WELDING - AASTMT](https://reader030.vdocuments.mx/reader030/viewer/2022012508/6185a1805ae90277fe1956d3/html5/thumbnails/19.jpg)
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.
18/07/2017 19
![Page 20: EXPLOSION WELDING - AASTMT](https://reader030.vdocuments.mx/reader030/viewer/2022012508/6185a1805ae90277fe1956d3/html5/thumbnails/20.jpg)
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.
18/07/2017 20