一.决定冷却速度快慢和冷却均匀性的两个新要素物理学上把蒸发、热传导、对流和热辐射列为热传递的基本方式。在油(水)中淬火所获得的快冷,得益于这四种方式的共同作用。关于蒸发:从蒸汽膜外侧液面蒸发出来的气体首先是进入蒸汽膜内,而不是直接排放到淬火液中。蒸汽膜附着在工件上。蒸汽膜内的气体会发生流动,流动有自己的规律性。按规律对气体流动状况加以控制,可以调节工件冷却的快慢和冷却的均匀性。 I. Two new elements that determine the rate of cooling and the uniformity of cooling Physically, evaporation, heat conduction, convection, and thermal radiation are listed as the basic modes of heat transfer. Quenching in oil (water) obtained by the fast cooling, thanks to the synergy of these four ways. About evaporation: The vapor that evaporates from the outside of the vapor membrane first enters the vapor membrane instead of directly into the quench liquid. Steam film attached to the workpiece. The gas in the vapor film will flow, and the flow will have its own regularity. Regularly control the gas flow conditions, you can adjust the workpiece cooling speed and cooling uniformity.