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Spectral characteristics of grinding sparks used for identification of scrap metals.

Authors
Riley WD; Dunning BW Jr.; Soboroff DM
Source
MISSING :13 pages
Link
NIOSHTIC No.
10005666
Abstract
The Bureau of Mines is conducting research on methods for the rapid identification and sorting of mixed scrap metals and alloys so that domestic scrap resources can be fully utilized. One method, spark testing, is the examination of the pattern of sparks that results when a metal or alloy is ground on an abrasive wheel. This technique requires experienced sorters. Bureau researchers have shown that spectrophotometric methods can be used in lieu of the highly skilled sorter. The spectra of mild steel, a high-strength low-alloy steel, several stainless steels, and four nickel-base alloys have been measured. Differences in the spectra that are sufficient for identification are apparent.
Publication Date
19850101
Document Type
IH; Report of Investigations
Fiscal Year
1985
Identifying No.
RI 8932
NIOSH Division
AVRC;
Source Name
MISSING
Page last reviewed: November 19, 2021
Content source: National Institute for Occupational Safety and Health Education and Information Division