solder preform

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Preform — A preform is material that has undergone preliminary shaping but is not yet in its final form. Fiber optics In fiber optics, a preform is a piece of glass used to draw an optical fiber.The preform may consist of several pieces of a glass with… … Wikipedia
Flux (metallurgy) — Rosin used as flux for soldering A flux pen used f … Wikipedia
Cryogenic seal — Cryogenic seals provide a mechanical containment mechanism for materials held at cryogenic temperatures, such as cryogenic fluids. Various techniques, including soldering and welding are available for creating seals, however specialized materials … Wikipedia
Brazing — This article is about the metal joining process. For the cooking technique, see braising. Brazing practice Brazing is a metal joining process whereby a filler metal is heated above and distributed between two or more close fitting parts by… … Wikipedia

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