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钢材锻造加工后,往在晶粒粗大,以致机械性能变坏,加工性能不良,因此锻件需正火处理,以细化晶粒。然而,在正火过程中由于种种原因经常出现晶粒未完全细化,在使用过程中便可能形成缺陷或断裂,严重影响产品质量,降低使用寿命。采用传统的金相
Forged steel processing, to die in the coarse, resulting in deterioration of mechanical properties, poor processing performance, so the forging to be normalized to refine the grain. However, in the normalizing process, due to various reasons, the grain is often not fully refined, defects or breaks may be formed during use, seriously affecting the product quality and reducing the service life. Using traditional metallography