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如何檢查除油的質量?
答:零件的除油質量按其表面被水潤濕的程度來決定。檢查的方法是:將除油后仔細沖洗過的工件，浸入冷水中，然后小心地從冷水中取出，保持垂直狀態或45度角。如果此時表面的水膜有斷裂處，即有不沾水的地方，則可知工件表面的油污未完全除凈。只有工件表面(mian)(mian)上的油污完全除凈時(shi)，整(zheng)個表面(mian)(mian)才能附上均一的水(shui)層
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