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交变盐雾试验箱
交变盐雾试验箱喷雾器应满足的要求
盐雾沉降量做为交变盐雾试验箱的核心指标,其影响盐雾沉降量的主要原因是喷雾器,那盐雾试验箱的喷雾器应满足:
一、应选择能产生细微、润湿和密集雾粒的喷雾器。制造喷雾器的材料应不与盐溶液发生反应。
二、喷雾后的盐溶液除挡板挡回的以外不得重复使用。
三、若喷雾采用压缩空气,则要求:
1、进入喷雾器的压缩空气必须先清除杂质,例如油污和沙尘等。
2、适当调整喷雾压力,使盐雾沉降量满足:在试验连续雾化8h后,有效空间的任意位置,用水平面为80cm2的干净收集器,所收集的盐雾溶液每小时平均应为1.0至2.0ml。收集器的数量至少为2个,其安放位置不应受到试验样品的遮盖,并应防止任何其他来源的凝聚液进入收集器的规定。
3、为了防止结晶盐堵塞喷雾口,喷雾口的空气相对湿度应不低于85%。为此,可让空气以小气泡的形式通过一个装有水的净化补湿器。水温不得低于试验温度。
Cyclic salt fog test box sprayer shall meet the requirements of
Do the core indicators for alternating salt fog test box of salt fog settlement, the main reason that affects the settlement is salt mist sprayer, spray the salt fog test box should meet:
One, should be selected to produce fine, wetting and dense fog particle sprayer. Manufacturing spray material shall not react with salt solution.
Salt solution spray after two, in addition to not return repeated use outside baffle.
Three, if the spray using compressed air, then the request:
Compressed air 1, enters the sprayer must first remove impurities, such as oil pollution and dust etc..
2, properly adjust the spray pressure, so that the salt fog settlement meet: the test of continuous atomization 8h, any position available space, with a horizontal surface is 80cm2 clean collector, salt spray solution collected hourly average should be 1 to 2.0ml. The collector number at least 2, its position should not be covered by the test samples, and should prevent the condensed liquid into the collector of the provisions of any other source.
3, in order to prevent crystallization salt plugging spray spray mouth, mouth of the air relative humidity should not be less than 85%. Therefore, can make the air in the form of small bubbles through a purification with water moisture apparatus. The water temperature not lower than the test temperature.