The study on the effect of electrical contact positions on the thickness of electroplated film with Hull Cell Test
Decorative coating on Acrylonitrile Butadiene Styrene (ABS) copolymer is widely used for exterior parts of automotives. The coating thickness distribution is very important for not only appearance but also corrosion resistance. Too thin coating layer will not give enough corrosion resistance. On the other hands too thick coating layer will give dull appearance and will cause the crack.In order to electroplate some materials on ABS, electroless nickel plating is performed firstly because ABS is insulator. After this process, however, surface electrical resistance is quite high because the thickness of electroless nickel is under the 0.5. Therefore the location of electrical contact of rack which supplies the electricity to an object affects uniformity of plating thickness through the surface of object. This paper analyzed the distribution of plating thickness on specimen with Hull Cell experiment and with computer simulation as well. The experiments and simulations are carried out by changing the location of electrical contact. Both results of experiments and computer simulations are compared respectively. The following figures show results that the locations of electrical contact are in high current density and in low current density respectively. The experiment results are very similar with the results of computer simulations. This paper conclude that the location of electrical contact is very important for obtaining the uniform film thickness on the ABS parts and the computer simulation can be used to figure out optimal position of electrical contact with little experimental effort.
Acrylonitrile Butadiene Styrene Automobile decoration Electrical Contact Hull Cell Plated Layer Current Density Electroless Ni
Woo-Seong Che Yang-Jin Hwang
Dept.of Mechatronics Engineering, Tongmyong University, Busan, Korea
国际会议
郑州
英文
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）