Brass Wire Plating
In a method of continuously coating a conductive substrate such as brass wire to produce a desired cross-sectional size of coated material, the wire is drawn through a first die to produce an oversize wire, electroplate in a bath, and then drawn through a final die to reduce its area to the desired size and produce a controlled surface finish. Difficulties arise where continuous plating has to achieve a particular overall cross-sectional size for the end product and the invention is of particular importance in such processes.
In this process De Nora’s DSA® anodes offer a cost effective and superior product quality for processing brass wire plating. This process is used for many applications where wire or tape must be plated on its external surface such as for the protection or insulation of wire baskets, wire shelves or wire frames for storage.
Acid Copper Plating Anodes
One of the most basic and widely practiced forms of plating is acid copper plating. De Nora has been a leader in developing and patenting anode structures and specialized coatings for this diversified industry. From the copper foil industry to the rotogravure printing industry, De Nora has been on the forefront of technological innovation.
Aluminium Anodizing Anodes
De Nora supplies the majority of aluminum anodizing anodes, which are primarily used for the anodizing of aluminum sheet in a continuous process line. Anodizing aluminum sheet prepares the sheet for use as printing plates in the newspaper, packaging, photographic paper industries.
Pickling Anodes
In recent years DSA® anodes have been successfully used as a direct replacement of conventional anodes made of Lead (Pb) cladding over copper or steel substrates. The use of De Nora ’s inert DSA® type anodes eliminates the risk of any additional toxic or hazardous substances being introduced to the process line. This thereby reduces or eliminates costs associated with hazardous waste disposal and the worries of Lead contamination on the finished product.
E-coat
E-coat is a term that stands for electrolytic coating. In other words, a coating that is deposited onto a substrate by passing a DC current between the anode and the structure to be coated or the cathode. The most common anode material used in the e-coat process is stainless steel. Although stainless steel is inexpensive and readily available the by-product of the anodic dissolution process is iron oxide or rust. The release of these iron oxides can cause problems.
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