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2. Lead smelting - Wikipedia

   en.wikipedia.org/wiki/Lead_smelting

   Solder, product waste and dross may also be recovered for its small lead content. Most secondary lead is used in batteries. To recover lead from a battery, the battery is broken and the components are classified. The lead containing components are processed in blast furnaces for hard lead or rotary reverberatory furnaces for fine particles.

3. Rework (electronics) - Wikipedia

   en.wikipedia.org/wiki/Rework_(electronics)

   In the 21st century, almost all soldering is carried out with lead-free solder, both on manufactured assemblies and in rework, to avoid the health and environmental hazards of lead. Where this precaution is not necessary, tin-lead solder melts at a lower temperature and is easier to work with.

4. 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 ...

5. Whisker (metallurgy) - Wikipedia

   en.wikipedia.org/wiki/Whisker_(metallurgy)

   Traditionally, lead has been added to slow down whisker growth in tin-based solders. Following the Restriction of Hazardous Substances Directive (RoHS), the European Union banned the use of lead in most consumer electronic products from 2006 due to health problems associated with lead and the "high-tech trash" problem, leading to a re-focusing ...

6. Lead poisoning - Wikipedia

   en.wikipedia.org/wiki/Lead_poisoning

   Deteriorating lead paint can produce dangerous lead levels in household dust and soil. [125] Deteriorating lead paint and lead-containing household dust are the main causes of chronic lead poisoning. [35] The lead breaks down into the dust and since children are more prone to crawling on the floor, it is easily ingested. [124]

7. Soldering - Wikipedia

   en.wikipedia.org/wiki/Soldering

   Extra-easy solder contains 56% silver and has a melting point of 618 °C (1,145 °F). Extra-hard solder has 80% silver and melts at 740 °C (1,370 °F). If multiple joints are needed, then the jeweler will start with hard or extra-hard solder and switch to lower-temperature solders for later joints.

8. Far-left Antifa activists waiting to see Trump actions. How ...

   www.aol.com/far-left-antifa-activists-waiting...

   Most of the Antifa activists interviewed for this story talked in terms of “lines being crossed” or gauntlets being thrown that could lead to protests and more. But those lines, and those ...

9. Lead (electronics) - Wikipedia

   en.wikipedia.org/wiki/Lead_(electronics)

   The lead wire is a coated copper wire, a tinned copper wire or another electrically conductive wire used to connect two locations electrically. In electronics, a lead (/ ˈ l iː d /) or pin is an electrical connector consisting of a length of wire or a metal pad (surface-mount technology) that is designed to connect two locations electrically.