Definitionn. impure zinc containing about three percent lead and other impurities
Last update: October 9, 2015
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The spelter used must therefore be of a good grade, and the lead is usually first refined in a reverberatory furnace (the softening furnace). [Please select]
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Spelter is variously composed of alloys containing copper, zinc, tin and antimony, the mixture employed depending on the work to be done. [Please select]
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_--The metal that is melted into the joint is called spelter. [Please select]
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This hard spelter melts at about 1650° and is correspondingly difficult to handle. [Please select]
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The heat should be continued only long enough to cause the spelter to flow into place and no longer. [Please select]
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Copper wire may also be used for this purpose, the spaces being filled with melted spelter. [Please select]
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The hardest grade of spelter is made from three-fourths copper with one-fourth zinc and is used for working on malleable and cast iron and for steel. [Please select]
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A spelter suitable for working with copper is made from equal parts of copper and zinc, melting at about 1400° Fahrenheit, 500° below the melting point of the copper itself. [Please select]
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