Behind the scenes at an explosion welding plant

Explosion welding is a process most often used to join two large sheets of metal in a stack. It does so with chemical explosives. This video shows and explains the fascinating process…

From Wikipedia…

Explosion welding…does not melt either metal. Instead it plasticizes the surfaces of both metals, causing them to come into intimate contact sufficient to create a weld…. Large areas can be bonded extremely quickly and the weld itself is very clean, due to the fact that the surface material of both metals is violently expelled during the reaction.

A major disadvantage of this method is that an expansive knowledge of explosives is needed before the procedure may be attempted.

Read more: http://twentytwowords.com/behind-the-scenes-at-an-explosion-welding-plant/

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4 responses to “Behind the scenes at an explosion welding plant”

  1. Rigby the Shepherd says:

    I was wondering the same question- sure it welds metals that don’t bond with other methods, but then what are the bonded metal sheets used for?? From the Wiki page I have gathered that the most frequent use of this method is to plate carbon steel with a corrosion resistant surface- ok, but what is the newly fused metal used for? I know that many chisels, plane blades, cutter heads, knives, and even swords are made out of two metals fused together for unique properties- the cutting edge will be a harder metal, but it tends to be more brittle and prone to cracking or chipping. The secondary metal is softer and thus wouldn’t create as good of a cutting edge, but it will absorb impact to reduce the risk of shattering the harder metal. Yet I don’t really think this is the method used for fusing those metals together- the application of using two varying metals for these tools definitely predates explosion welding.

  2. Cris says:

    The May issue of American Rifleman had an article about this. Handgun manufacturers use it to weld a heavy metal that can handle wear to a softer, lighter metal. They uses the hard side for things that are subject to wear and the soft side for structural strength. This makes for a pistol that is lighter but just as durable as solid metal.

  3. Alex says:

    Does anyone know a few typical applications?

  4. Matt says:

    Usually welding dissimilar metals that can’t be welded by conventional welding.