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Electrical solder with an integrated rosin core, visible as a dark spot in the cut end of the solder wire. Main article: Flux (metallurgy) Flux is a reducing agent designed to help reduce (return oxidized metals to their metallic state) metal oxides at the points of contact to improve the electrical connection and mechanical strength.
Solder itself, which is generally composed of low melting temperature metals and adjunctives, as well as the various components used during the act of soldering, including flux, rosin, [3] and the various coatings found on solderable materials, like Polytetrafluoroethylene together present a substantial occupational health hazard. [2]
The solder used in the process can vary in composition, with different alloys used for different applications. Common solder alloys include tin-lead, tin-silver, and tin-copper, among others. Lead-free solder has also become more widely used in recent years due to health and environmental concerns associated with the use of lead.
Rosin used as flux for soldering A flux pen used for electronics rework Multicore solder containing flux Wire freshly coated with solder, held above molten rosin flux. In metallurgy, a flux is a chemical reducing agent, flowing agent, or purifying agent. Fluxes may have more than one function at a time.
A reference designator unambiguously identifies the location of a component within an electrical schematic or on a printed circuit board.The reference designator usually consists of one or two letters followed by a number, e.g. C3, D1, R4, U15.
I work at an electronics repair workshop and we refuse to use lead free solder and I believe most other workshops do as well. Hobby stores here do not stock lead-free solder. Only a small percentage of new appliances I see contain lead-free solder and it's a pain in the ass to work with. --Spuzzdawg 03:49, 4 May 2008 (UTC)
Soldering copper pipes using a propane torch and a lead-free solder. Solder is a metallic material that is used to connect metal workpieces. The choice of specific solder alloys depends on their melting point, chemical reactivity, mechanical properties, toxicity, and other properties. Hence a wide range of solder alloys exist, and only major ...
A solder paste is essentially powdered solder suspended in flux paste. The tackiness of the flux holds components in place until the soldering reflow process melts the solder. As a result of environmental legislation, most solders today, including solder pastes, are made of lead-free alloys [citation needed].