When the heating temperature of the metal or alloy reaches the temperature near the solidus temperature, the phenomenon that the grain boundary begins to partially melt and oxidize is called overheating. This is an internal oxidation phenomenon, over burned metals or alloys can not be restored by heat treatment or plastic deformation processing methods, can only be scrapped. Therefore, in the heat treatment process in strict accordance with the process of heating and insulation is to prevent overheating and overheating the basic requirements. What is overheating and overheating? How to prevent?
When metal or cold work die steels or alloys are heated during heat treatment, due to high temperature, long holding time and uneven furnace temperature, the grain of the steel grows so thick that the performance is significantly reduced. overheat. The overheated material can be recovered by heat treatment, such as by complete annealing to refine the grain.
When the heating temperature of the metal or alloy reaches the temperature near the solidus temperature, the phenomenon that the grain boundary begins to partially melt and oxidize is called overheating. This is an internal oxidation phenomenon, over burned metals or alloys can not be restored by heat treatment or plastic deformation processing methods, can only be scrapped. Therefore, in the heat treatment process in strict accordance with the process of heating and insulation is to prevent overheating and overheating the basic requirements.
This article is edited by Zhongshan Huashi Fushun Special Steel Technology Department. Please call for more details.
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