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淬火quench，To cool (hot metal) by thrusting into water or other liquid.回火temper，To harden or strengthen (metal or glass) by application of heat or by heating and cooling.退火anneal，To subject (glass or metal) to a process of heating and slow cooling in order to toughen and reduce brittlen正火normalizing，Normalizing is a type of heat treatment applicable to ferrous metals only. It differs from annealing in that the metal is heated to a higher temperature and then removed from the furnace for air cooling.
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