Increasing Bath Life and Quality of Trivalent Passivates on Zinc Plate

As published in Products Finishing Magazine, April 2019 issue. Q: What is the best way to increase the bath life and quality of trivalent passivates on zinc plate? A: One of the more significant developments of the last 20 years in the metal finishing industry is the commercial development and application of trivalent passivates on zinc electroplate. These developments have allowed applicators to eliminate the use of toxic hexavalent-chromate conversion coatings, thereby safeguarding the health of all involved in the handling and processing of zinc-plated parts. Further, these trivalent … [Read more...]

It’s All About Plating

Plating is one of our specialties at Asterion. It's a big deal for our manufacturing clients and is often the most important part of their production process. Are you aware of all the different ways metal can be plated onto different media? There are also many different plating solutions for each unique and custom parts manufacturing job. Here are a few of our favorite posts on various plating methods and outcomes: Hard Chrome Plating The process of hard chrome plating has been used since the early part of the 20th century. It is a process that is used in nearly every aspect of manufacturing … [Read more...]

Zinc Plating

Years ago zinc plating was used for corrosion protection and was mainly applied using a cyanide based process.  The process of plating zinc from an Acid Bath brought with it brighter deposit and Zinc Plating became a cosmetic finish as well as corrosion protective finish.  In recent years the process of plating Zinc from an Alkaline Non Cyanide solution has been perfected.  Today nearly all Zinc is plated from either the Acid Zinc or the Alkaline Non Cyanide processes. Each process has its positive and negative points.  Acid Zinc produces a bright, level, Chrome like finish.  The Alkaline … [Read more...]

Why Zinc Plating?

Most people you talk to about zinc electroplating, have very little knowledge of what  that process means, or why you would want to perform it. As you go a little deeper into the explanation of what zinc electroplating entails, they begin to see the picture. Looking at a car, there are many parts that will corrode from exposure to water and salt from the roads. The corrosion leads to part failure if left unchecked. The next question that comes to mind is, how do you protect these parts? Answer: You add a coating on top of the parts to slow down or prevent corrosion. There are a variety of … [Read more...]

Functional Zinc Processes

Zinc is one of the most widely used functional sacrificial coatings to inhibit corrosion of ferrous metals. Over the years a variety of Zinc plating and post treatment chemistries (chromates –hexavalent and trivalent-- and seals) have been developed to improve the aesthetics and functionality of zinc coatings. Over the years there have been three types of zinc processes: Cyanide based chemistry – seldom used today because of safety issues, waste treatment and disposal cost—but still it is needed in some applications. These processes were very forgiving and easy to control. Environmental … [Read more...]