Click to see the process video (courtesy of PhilGav)
Chemistry for outstanding finish.
Throughout the years, MCT have developed the R&D capabilities to introduce products that redefined the HDG process to a whole new level. A good HDG process includes a perfectly balanced chemistry in each of its pre-treatment process as well as the metallurgy of the zinc bath. MCT strives to achieve in both areas, providing various ingenious product for cleaning of the steel articles, degreasing; both alkaline and acid, pickling process and also fluxing.
Our portfolios also include additives for zinc bath, a brain-child of our CEO and scientist as a well as environmental-friendly passivation chemicals, ones that of course not in yellow/orange shade.
What experts say about chemicals used in HDG?
We communicate with you constantly – so you can stay up-to-date on ways to get your process right, and stay right.
Each galvanizer optimizes their cleaning chemicals to give them the best results at cleaning the steel or iron and achieving a high-quality hot-dip galvanized coating. There are some materials the cleaning chemicals used prior to galvanizing cannot remove or have great difficulty removing; very heavy or extremely adherent mill scale, oil-based paints and markers, very heavy or thick deposits of wax or grease and more. – Bernardo A. Duran III, American Galvanizers Association
Alkaline degreaser has very good degreasing performance (at minimum 50° and removal of paint and grease is possible. The cost of chemical is also relatively lower than acid degreaser and lower consumption compared to acid degreaser. – Jürgen Kader, Stockmeier Chemie GmBH & Co. KG, German
Advantages of acidic degreasing baths are that the pickling process already starts during the degreasing and, more importantly, that grease does not dissolve in the bath, thus has virtually unlimited service life. – Vlastimil Kuklík, Jan Kudláček, in Hot-Dip Galvanizing of Steel Structures, 2016
Most of your zinc will end up on the parts as the final product to be sold, but there is no need to give away free zinc to the customer beyond the minimum specification requirements. However, reactive and/or thick steels can be problematic as zinc pickup is often high or excessive for these materials. To optimize coating thickness, you should address steel chemistry, the cocoon effect, withdraw rates, and the use of bath alloying elements. – Alana Fossa, American Galvanizers Association
Product Range
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