Electronically controlled flame hardening method used by Hammon Precision Equipment Co, Oakland, Calif, and designed to treat rails of various lengths, including welded strings is described; production of flame-hardening plant is amounting to 24 double rail lengths per 8-hr day.
Automated process `case-hardens' rails with natural gas
Ry Track Structures
Railway Track and Structures ; 60 , n 9
1965
2 pages
Article (Journal)
English
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