Di-rect quenching of work piece through precooling can reduce hot deformation and improve strength and toughness of the core, It prevents ...

• 结果还表明，工件预冷直接淬火可以减小热处理变形，还能提高心部强韧性，防止表面局部氧化脱碳，有利于提高点接触疲劳寿命。