here are certain timeless truths when it comes to printed circuits, and the more we stray from them, the more fervent our reaction when rediscovering them. Electrochemical deposition is going through such a revelation utilizing pulse reverse waveforms.
Electroplating was developed as a combination of Direct Current (DC) and a chemical bath. It was understood that this simple waveform and bath composition had considerable limitations. Numerous innovations followed to optimize the plating process for the desired deposit characteristics. There were advances in cell geometries, anode materials, temperature controls, monitoring, instrumentation and numerous others.
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The development of modern continuous sheet galvanizing lines has led to the disappearance of most of the old manual mills for galvanizing cut sheets. There are however still some machines that galvanize cut-to-length sheets; they use chemical pretreatment sequence similar to those for wire or tube galvanizing.
At the beginning of the line, the end of one coil is welded to the start of the next coil. Then there are two basic methods for continuously galvanizing sheet which differ in the way that the strip is cleaned before galvanizing-chemically or by thermal treatments. Coils of annealed cold reduced sheet may be fed directly to the galvanizing line, or alternatively, coiled sheet is continuously heat treated in the pretreatment line. After leaving the galvanizing bath, in which strip only stays for a few seconds, the surface is wiped to remove excess zinc and may be further treated to after the surface appearance, composition, smoothness or mechanical properties.
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Updating its DOS-based software, the company introduces DynaComm II, a 32-bit, Windows-based software that operates under any of the current platforms available (95/98/NT/CE). Employing either the simple point-and-click or touch-screen technology common for Windows applications, DynaComm II provides an electroplating process control program for the PRO-Series and DC rectifiers.
This program consists of an Operator Interface (OI) for parameter entry and display and a Control Server (CS) to control and monitor the rectifiers. These two applications use a Windows socket connection to interchange data using the Internet protocol. This two-part design allows DynaComm II to be installed on a single computer for a stand alone application or to be installed on separate computers where the operator’s and rectifier’s positions can be separated by feet or miles.
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