flame hardening

(General Engineering) engineering the surface hardening of ferrous metals by heating the metal with an oxyacetylene flame followed by rapid cooling

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

References in periodicals archive

Whether one or two coats is used, the final flame hardening of the refractory must not burn the binder that anchors the paint to the layer beneath nor should the surface color change.

Troubleshooting Casting Defects in Nobake Molding

Four high energy application methods have been used in the past: flame hardening, induction heating, laser energy, and electron beams.

Heat treating: forecasting changes in heat treatment processing methods for the next decade

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