hull test赫尔槽测试中文版
18页1、The Hull Cell (U.S. Patent # 2,149,344) is a miniature test cell designed to produce a plated deposit over a range of current densities. The deposit is dependent upon the condition of the plating bath (i.e. concentration of primary components, addition agents and impurities). The Hull Cell is a useful tool for varying chemical composition, determining covering power (the lowest current density at which a deposit is produced), measuringaverage cathode efficiency, average metal distribution or thr
2、owing power, and observing the effects of pH,temperature and decomposition products. A clear Lucite Hull Cell enables the operator to observe the plating onthe back of the test panel to determine relative covering power at very low current densities.赫尔槽(美国专利2149344)是一种被设计用来在一定电流密度范围内产生电镀层的小型测试槽。电镀层的状况由电镀液的状况决定(主盐成分,添加剂和杂质)。赫尔Cell是一种有用的工具,为不同的化学组成,确定覆盖能力(最低电流密度产生的镀层),测量平均电流效率,金属平均分配或分散能力,并观察pH值温度和分解产物的影响,。一个透明的合成树脂赫尔槽能够让操作者通过观察试片背面的镀层,以确定在非常低的电流密度下的相对覆盖能力。The Hull Cell was originally developed by
3、 the R. O. Hull Company, which later became the ROHCO Division ofMcGean-Rohco, and is now part of Atotech. The Hull Cell has become an integral part of plating operations everywhere. 赫尔槽最早由赫尔公司发明,该公司现在是安美特公司的一个部分,赫尔槽已经成为世界各地电镀操作的一个必须部分。ADVANTAGESThe Hull Cell enables an experienced operator to determine the following facts about a plating solution:1. Approximate Bright Current Density Range. This is accomplished by comparing the bright plated areas on the panel with current densities given in a
4、chart. If the bright or operable range is between 1-1/4” (3.2 cm) and 2-1/2 “(6.4 cm) from the left side of the panel, and the total current applied is 3 Amps,the corresponding respective current densities from a Hull Cell ruler or chart lie between 75 Amps/ft2(7.6 Amps/dm2) and 25 Amps/ft2 (2.7 amps/dm2). Since these values represent extreme limits, it doesnot follow that either of these current densities can be used in a plating bath without obtaining a poordeposit. However, some intermediate
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