Ignition of Methane by Frictional Sparks Between Metals and Rusty Steel.
Desy-DH; Risbeck-JS; Neumeier-LA
Pres At Ann Mtg SME AIME Chicago Illinois SME Preprint 73-F-29 1973 Feb; :8 pages
This research was undertaken to establish the incendivity of aluminum alloys against rusty steel under frictional impact conditions at typical coal mine fan speeds, to determine any differences in incendivity among various aluminum alloys, and to investigate less incendive materials as substitutes for aluminum alloys. With a specially designed apparatus, three aluminum casting alloys and three constructional steels were tested for incendivity in frictional impact against rusted steel in flammable methane-air mixtures. Although varying in degree, all aluminum alloys investigated exhibited a high ignition probability under the test conditions; none of the steel specimens tested caused any ignitions under the same conditions.
Pres. At Ann. Mtg. SME AIME, Chicago, Illinois, SME Preprint 73-F-29, Feb. 25-Mar. 1, 1973