surface rolling

surface rolling

[′sər·fəs ‚rōl·iŋ]
(metallurgy)
A cold-rolling process for hardening the surface of a metal.
References in periodicals archive ?
A Valleys metro is possible now though with third rail electrification, and the opportunity of using surface rolling stock that the London Underground is in the process of replacing early.
The torque is transmitted mostly by involute surface rolling, minimising the faces sliding friction.