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我們知道,連續地錘击金属,可提高金属表层的强度。铁匠打镰刀就是如此。近几年,出現了一种噴弹强化零件的新工艺。它是利用旋轉的噴輪叶片或空气流,使一連
We know that hammering metal continuously can increase the strength of the metal surface. This is the case of the blacksmith smashing knife. In recent years, there has emerged a new process for the injection of reinforced parts. It is the use of rotating impeller blades or air flow to make a series of