Science of Successfully Anodizing Die Cast Substrate | Products Finishing

Die castings pose some of the most challenging problems in anodizing. This paper provides some explanations by tying together metallurgical science with anodizing practice. Die castings pose some of the most challenging problems in anodizing.  The finish can be too thin, non-uniform and/or have an unfavorable appearance.  These are common problems with a variety of practical solutions; they are easy to recognize, but in many instances, the source for the problem remains unknown.  Critical to solving the problems of anodizing die castings is understanding the die cast substrate and the impact of surface condition, alloy composition, casting quality and microstructure on the anodizing process. Substrate quality issues are just as important, maybe more so, than anodizing conditions and technique.  Certain optimum anodizing conditions may be used in some cases to help overcome less than advantageous metallurgical conditions.  These include well known processing tools such as various pretreatment chemistries, higher anodizing bath concentration, and higher bath temperatures. These, and other recommended solutions are not successful in every case; sometimes trial and error testing on ...

Vegadif 85 is a universal, differential pressure transmitter for measuring liquids, gases and vapors that comes

Vegadif 85 is a universal, differential pressure transmitter for measuring liquids, gases and vapors that comes standard with an additional absolute pressure sensor on the low pressure side, providing the option to measure differential and static pressure simultaneously with one device. Having both available as digital or 4-20mA outputs provides more information for all applications. Designed with functional safety in mind, Vegadif 85′s electronics inside are intrinsically safe and flameproof. It was developed according to IEC 61508 for SIL2, and can be homogeneously redundant for SIL3 applications. It also has an option for Bluetooth communication and display capabilities. Vegadif 85′s compact design uses less oil behind the diaphragms, giving operators a faster reaction time and a measurement accuracy of 0.065% at full scale. It can be configured to meet application needs with multiple measuring ranges from 0.15 psi up to 240 psi. It can also be assembled in different configurations for easier mounting, and has optional brackets and valve manifolds. Micropilot FMR5X free-space radar and FMP5X Levelflex guided radar level transmitters have added Heartbeat onboard di...