radio-frequency preheating

radio-frequency preheating

[′rād·ē·ō ¦frē·kwən·sē ¦prē′hēd·iŋ]
(engineering)
Preheating of plastics-molding materials by radio frequencies of 10-100 megahertz per second to facilitate the molding operation or to reduce the molding-cycle time. Abbreviated rf preheating.
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