Coating Plating "Room Temperature Zinc Plating ZRC Method" <Case Studies Provided>

There is a proven track record of maintaining rust prevention effects for over 19 years since construction on bridges, reducing lifecycle costs.

The "Room Temperature Zinc Coating ZRC Method" is a technique for protecting steel members, such as large structures, thin sheet products, and bridge girders, from rust, where hot-dip galvanizing is difficult to apply. By applying a one-component liquid mixture called "ZRC," which contains 95% high-concentration zinc, with a dry film thickness of 81μm or more, it exhibits rust prevention equivalent to hot-dip galvanizing (JIS H8641 HDZT77). The effectiveness can be maintained over the long term, and in a survey conducted in November 2022 on part of the Kamoike Ohashi Bridge in Yokohama City, which opened in October 2003 (underneath the deck and stairs), there was no peeling or rust occurrence, and it has remained in a state that requires no repairs for over 19 years. 【Features of the Room Temperature Zinc Coating ZRC Method】 ■ No immersion in a zinc plating bath is required, allowing for application to large components in factories or on-site. ■ Since it is applied at room temperature, it can be used on thin products that may warp due to high-temperature processing. ■ Corrosion resistance performance equivalent to hot-dip galvanizing has been recognized in outdoor exposure corrosion tests (5 years in Miyako Island), etc. ■ Long-term durability is achieved through electrical conduction within the coating. Repairs, renovations, and re-galvanizing are also easy. ■ Free design options are possible with the use of specialized topcoat paints in colors like red and blue. ★ Case study materials can be viewed from the "PDF Download."

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