Vacuum cementing — or vacuum welding is the natural process of solidifying small objects in a hard vacuum. The most notable example is dust on the surface of the moon.This effect was reported to be a problem with the first American and Soviet satellites, as small… … Wikipedia
Welding — is a fabrication process that joins materials, usually metals or thermoplastics, by causing coalescence. This is often done by melting the workpieces and adding a filler material to form a pool of molten material (the weld puddle ) that cools to… … Wikipedia
Vacuum — This article is about empty physical space or the absence of matter. For other uses, see Vacuum (disambiguation). Free space redirects here. For other uses, see Free space (disambiguation). Pump to demonstrate vacuum In everyday usage, vacuum is… … Wikipedia
Vacuum packing — Salt baked chicken feet sold in China: vacuum packed and ready to eat Vacuum packing or vacuum packaging is a method of packaging that removes air from the package prior to sealing. It can involve both rigid and flexible types of packaging. The… … Wikipedia
vacuum diffusion welding — vakuuminis difuzinis suvirinimas statusas T sritis radioelektronika atitikmenys: angl. vacuum diffusion welding vok. Vakuumdiffusionsschweißen, n rus. вакуумная диффузионная сварка, f pranc. soudure de diffusion sous vide, f … Radioelektronikos terminų žodynas
Cold welding — An Alaska gold nugget weighing 63.8 grams. Gold nuggets are often formed through the cold welding of smaller particles which impact as they are carried along water currents Cold or contact welding is a solid state welding process in which joining … Wikipedia
Electron beam welding — (EBW) is a fusion welding process in which a beam of high velocity electrons is applied to the materials being joined. The workpieces melt as the kinetic energy of the electrons is transformed into heat upon impact, and the filler metal, if used … Wikipedia
Ultra high vacuum — (UHV) is the vacuum regime characterised by pressures lower than about 10−7 pascal or 100 nanopascals ( 10−9 torr). UHV requires the use of special materials in creating the vacuum system, extreme cleanliness to maintain the vacuum system, and… … Wikipedia
Materials for use in vacuum — are materials showing very low rate of outgassing in vacuum, and, where applicable, tolerant to the bake out temperatures. The requirements grow increasingly stringent with the desired degree of vacuum achievable in the vacuum chamber. The… … Wikipedia
Oxy-fuel welding and cutting — Oxyacetylene redirects here. For the song, see Cubanate. Side of metal, cut by oxygen propane cutting torch … Wikipedia
Laser beam welding — (LBW) is a welding technique used to join multiple pieces of metal through the use of a laser. The beam provides a concentrated heat source, allowing for narrow, deep welds and high welding rates. The process is frequently used in high volume… … Wikipedia