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商业仓库储存的金属制品,往往由于受自然条件的影响而发生锈蚀,严重的会变成废品,造成经济损失。因此,有些仓库采取涂油的方法预防锈蚀的发生。对一些结构简单、表面比较粗糙的小件金属制品,涂油是一种经济、适用的防锈方法,其作用在于:通过油层的密封作用,隔离空气中的水蒸气及氧、二氧化碳、二氧化硫、硫化氢等有害气体与金属表面的接触,保护金属免受侵蚀。可是,目前常用的凡士林油等矿物油脂也有其弱点,不仅抵抗空气中的氧和水蒸汽的能力很弱,而且油脂本身还会随着时间的推移而逐渐酸败,产生游离酸等物质,促使金属锈蚀。
Metal wares stored in commercial warehouses are often corroded due to natural conditions and become seriously scrapped, resulting in economic losses. Therefore, some depots oiling methods to prevent the occurrence of corrosion. For some small metal products with simple structure and rough surface, oiling is an economical and applicable antirust method. The function of oiling is to seal off the water vapor and oxygen, carbon dioxide, sulfur dioxide, Hydrogen sulfide and other harmful gases and metal surface contact, protect the metal from erosion. However, the commonly used Vaseline oil and other mineral fats also have their weaknesses, not only to resist the ability of oxygen and water vapor in the air is very weak, and the grease itself will gradually rancid over time, resulting in free acid and other substances, prompting the metal Corrosion.