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Article #11522Re: Soldering using flux!
From: John Whitmore
Date: Wed, 14 Oct 1992 01:01
Date: Wed, 14 Oct 1992 01:01
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In article <1992Oct13.194943.27623@mnemosyne.cs.du.edu> rbanksjr@nyx.cs.du.edu (Richard E. Banks Jr.) writes: >I was more than half way finished with a project that I was building >before I realized how much better solder works when you use flux. >Anyway, what is flux made of and why does it work so well? Metal surfaces are almost always dirty/oily/covered with oxide. Flux is a mixture of soaplike surfactants and reducing agents (which reverse oxidation), occasionally with some etchant (to clean metal throughly, it's convenient to just dissolve the top layer). Of course, the flux operates at high temperature; at room temperature, it's pretty innocuous stuff. Rosin (pitch from trees) and zinc chloride and borax are typical flux components. For stainless steel, add sulphuric acid to the list... All the fluxes I'm familiar with are proprietary mixes. John Whitmore
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arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!usenet.coe.montana.edu!news.u.washington.edu!milton.u.washington.edu!whitReferences:
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Newsgroups: sci.electronics Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!usenet.coe.montana.edu!news.u.washington.edu!milton.u.washington.edu!whit From: whit@milton.u.washington.edu (John Whitmore) Subject: Re: Soldering using flux! Message-ID: <1992Oct14.010119.6107@u.washington.edu> Summary: simple chemistry Sender: news@u.washington.edu (USENET News System) Organization: University of Washington, Seattle References: <1992Oct13.194943.27623@mnemosyne.cs.du.edu> Date: Wed, 14 Oct 1992 01:01:19 GMT Lines: 22