Innovations in one-step organic passivation processes for metals
This article describes one-step organic phosphating, a process for pretreatment of metal surfaces in one stage, in a minute of treatment time, using no heat and no water, and generating no solid or liquid wastes. The article provides a general description of how the pretreatment process works and indicates some drawbacks with the more traditional types of liquid-based industrial pretreatments. It then describes improvements and modifications to the one-step organic phosphating technology that have led to a new one-step organic passivation process. Test results provided indicate recent data collected on the effectiveness of the new technology.
Proper pretreatment (cleaning, degreasing, and metal passivation) of metals before applying powder coatings is fundamental to guaranteeing good performance of those coatings and, of course, of the metal products themselves as they’re put to use in the market. Many water-based industrial pretreatment processes are available, and many of them are capable of meeting a wide variety of market demands. However, some of them have drawbacks as well that must be taken into account. These include