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    Article
    钢材预处理线中除锈的等级
    Hachieve| Time2011/12/14 8:47:21
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    钢材预处理线中喷射和抛射除锈该项国家标准设有四个除锈等级，每一等级的文字定义如下：
    Sa1 轻度的抛射或喷射除锈，钢材表面应无可见的油脂和污垢，并且没有附着不老的氧化皮、铁锈和油漆涂层等附着物。
    Sa2 彻底的喷射和抛射除锈，钢材表面应无可见的油脂和污垢，并且氧化皮铁锈和油漆涂层等附着物已基本清除，其残留物应是牢固附着的。
    Sa2.5 非常彻底的喷射或抛射除锈，钢材表面应无可见的油脂、污垢、氧化皮、铁锈和油漆涂层等附着物，任何残留的痕迹应仅是点状或条纹状的轻微色斑。
    Sa3 使钢材表面洁净的喷射或抛射除锈，钢材表面应无可见的油脂、污垢、氧化皮、铁锈和油漆涂层等附着物，该表面应显示均匀的金属色泽。

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