Birchwood Technologies’ MicroLok MZN finish is said to produce attractive, durable protection for iron and steel parts. It is a fine-grained zinc phosphate coating designed to withstand as much as 1,400°F protection for high heat applications such as brake components.
The coating is a 20-minute process that requires five steps for processing. According to the company, it is safe to apply at a temperature of 140-160°F with no boiling or splattering, and bath maintenance requires a titration procedure to monitor the concentration with ease.
It is a well-suited finish for tooling and machine components, piston/cylinder assemblies, rotors and calipers, oil-field equipment or any part that does not require a dark black finish, but does require robust corrosion protection. The finish complies with MIL-DTL-16232G, Type Z, Classes 1, 2 and 3.
The company says there are no technical or costly conversion challenges switching from an existing cold process with existing tank facilities, so finishers with existing lines can convert to the process. New tank lines are available in any size from modest cost, ranging from small-scale manually operated lines to large-volume CNC operated systems.