Conversion to new nonphosphate pretreatment technology
A study in the proper approach to convert a powder line from iron phosphate to fluorozirconic, or TMC, metal preparation
In the September 2006 issue of Powder Coating, we introduced a new development in pretreatment with the first part of a two-part article “Dry-in-place conversion coatings creating excitement in finishing—part I.” Part II was published in the February 2007 issue. In 2010, we followed up with “History and development of TMC and new conversion technology.” In this issue, we offer an actual metal finisher of national acclaim who took that advice and went further in its own testing to prove out and implement a transition metal conversion (TMC). This is how the company did it and benefitted from doing it correctly with the assistance of Circle-Prosco, a specialty chemical company.