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Spark testing in the identification of stainless steel and superalloy scrap.
Larrain JM; Riley WD; Brown RD Jr.
Recycle and secondary recovery of metals: proceedings of the International Symposium on Recycle and Secondary Recovery of Metals and the Fall Extractive and Process Metallurgy Meeting, December 1-4, 1985, Fort Lauderdale, Florida. Taylor PR, Sohn HY, Jarrett N, eds. Warrendale, PA: Metallurgical Society, 1987 Feb; :365-379
The Bureau of Mines is studying methods of identification of scrap that will lead to better segregation, conservation of strategic materials, and better utilization of existing resources. Spark testing--the visual examination of the spark stream generated when a metal is struck against a grinding wheel--has been used successfully for many years in the classification of alloy steels. Research using spectrophotometric methods to determine the characteristics of the light emitted by the sparks, and a minicomputer to recall and compare spark patterns is described. The utility of this instrumental method for the rapid identification of stainless steels and superalloys is discussed.
Metals; Waste-treatment; Analytical-processes
OP; Conference/Symposia Proceedings
Taylor-PR; Sohn-HY; Jarrett-N
Recycle and secondary recovery of metals: proceedings of the International Symposium on Recycle and Secondary Recovery of Metals and the Fall Extractive and Process Metallurgy Meeting, December 1-4, 1985, Fort Lauderdale, Florida
Page last reviewed: November 12, 2021
Content source: National Institute for Occupational Safety and Health Education and Information Division