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  2. Solder alloys - Wikipedia

    en.wikipedia.org/wiki/Solder_alloys

    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 ...

  3. Solder - Wikipedia

    en.wikipedia.org/wiki/Solder

    When lead-free solder is used in wave soldering, a slightly modified solder pot may be desirable (e.g. titanium liners or impellers) to reduce maintenance cost due to increased tin-scavenging of high-tin solder. Lead-free solder is prohibited in critical applications, such as aerospace, military and medical projects, because joints are likely ...

  4. Jewellery cleaning - Wikipedia

    en.wikipedia.org/wiki/Jewellery_cleaning

    The cleaner would first inspect the jewelry to ensure that the gemstones are accounted for and secured. Materials that can handle it are often placed in an ultrasonic bath using a cleaning solution and later put through a steam cleaner, while more sensitive materials will go through light brushing in soapy water.

  5. How to Clean Gold Jewelry, According to a Professional Jeweler

    www.aol.com/clean-gold-jewelry-according...

    Gold jewelry is beautiful, durable and relatively easy to maintain. That said, not all gold is created equal and even the solid (i.e., not gold-plated) stuff requires an occasional polish. Without

  6. This Jewelry Cleaning Solution Has Over 13,000 Five-Star Ratings

    www.aol.com/jewelry-cleaning-solution-over-13...

    It cleans your diamond jewelry, and more, in a snap. This product has nearly 14,000 ratings on Amazon with an average of 4.7 stars—and it’s honestly as easy, if not easier, to use than putting ...

  7. Soldering - Wikipedia

    en.wikipedia.org/wiki/Soldering

    Additionally, tin is a more corrosive metal, and can eventually lead to the failure of solder baths [clarification needed]. [36] Lead-free construction has also extended to components, pins, and connectors. Most of these pins used copper frames, and either lead, tin, gold or other finishes. Tin finishes are the most popular of lead-free finishes.

  8. Wave soldering - Wikipedia

    en.wikipedia.org/wiki/Wave_soldering

    The solder is usually a mixture of metals. A typical leaded solder is composed of 50% tin, 49.5% lead, and 0.5% antimony. [1] The Restriction of Hazardous Substances Directive (RoHS) has led to an ongoing transition away from 'traditional' leaded solder in modern manufacturing in favor of lead-free alternatives. Both tin-silver-copper and tin ...

  9. RoHS - Wikipedia

    en.wikipedia.org/wiki/Lead-free

    The more common lead-free solder systems have a higher melting point, e.g. a 30 °C typical difference for tin-silver-copper alloys, but wave soldering temperatures are approximately the same at ~255 °C; [47] however at this temperature most typical lead-free solders have longer wetting times than eutectic Pb/Sn 37:63 solder. [49]

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