Thermite welding uses an exothermic chemical reaction process to weld components together. A metal powder which releases a great deal of energy (highly exothermic) when reacting with oxygen, is combined with the metal oxide with a much lower heat of formation. An example of a thermite welding process; powdered mixtures of aluminum metal and iron oxide are loaded into the weld seam or joint and ignited. The aluminum strips the oxygen away from the iron oxide leaving behind a deposit of iron and aluminum oxide.
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Product innovation article explaining why Secure-ID Tamper Evidence Seals are needed for physical access security in election polling places.
Plastic strap seals and loop seals are tamper-indicating devices that are also known as lpull-tight seals and pull-up seals. Some plastic strap seals and loop seals are embossed with serial numbers.
Operational Excellence & Lean Six Sigma The designs (understandably) must be very inexpensive. The designs (understandably) cannot appreciably get in the way of the consumer being able to open the...
Wire loop seals are strong, flexible, tamper resistant seals using multi-ply wire and a crushable seal. These passive seals consist of one wire twisted around one or more wires. The wire bundle is...
Overview Using dry gas seals in a centrifugal compressor requires a support system designed to supply sealing gas to the seal as the working fluid for the running gap. These gas seal support systems...