Inside Zinc and Zinc-Nickel Post-Plating Protective Finishes

As published in Products Finishing Magazine, August 2020 Issue. When I began my career in metal finishing in the mid-1980s, the industry took an introspective view of where it came from and in what direction it was going. It is interesting to look back at that time and remember all of the changes that began occurring as we entered the 1990s. Environmental concerns dominated the industry. I can specifically remember the market being flooded with new technology and equipment to deal with environmental concerns about the plating process. This was followed by developments in plating … [Read more...]

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...]