WHAT'S NEW at APC? 30% Energy Savings Realized in Green HVAC Controls Initiative - By integrating state-of-the art PLC controls with Artistic’s existing advanced fiber optic SCADA control network a savings of over 30% in overall energy usage was experienced this past winter season. Expansion in Commercial and Precision Passivation Services Coming May 2010 - Due to continued growth in the demand for passivation services Artistic Plating is adding an additional processing line to provide expanded capacity in both heated and room temperature citric and nitric acid systems including the AAA Method of passivation. Find Artistic Plating on LinkedIn - If you would like to network with Artistic Plating we would encourage you to visit our account on Linked In.
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Hydrogen Embrittlement And BakingWhat is hydrogen embrittlement and how is it prevented? Hydrogen embrittlement results from the simultaneous codeposition of the primary metal and hydrogen on the surface of the work piece (cathode). The hydrogen is available from the water in aqueous plating bath chemistries. Because the hydrogen atom is much smaller in size than the metal of the deposit, it is able to migrate into the crystal lattice of the basis metal, and reside interstitially between the individual metal atoms. The interstitial hydrogen can greatly amplify the stress of applied forces within the basis metal which can produce catastrophic fracture at loadings much lower than the typical yield strength of the material. Hardened steels (> 40 Rc) are particularly susceptible to this phenomena and as such are generally required to be baked after plating to protect against hydrogen embrittlement. Hydrogen codeposition can occur in the plating process either during the actual electrolytic deposition or during the cleaning and acid pickles preceding the plating bath. It is readily removed from the metal lattice by baking the product immediately after plating. The requirement for baking is a time-at-temperature cycle that is generally specified on the part print or within a plating specification. A typical cycle is to bake at 375ºF for 4 hours within 1 hour after plating. |
FINISH SELECTOR Gold Plating |
