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Blog - Author: Bob Woods

Author: Bob Woods

Galvanizing 102

By Bob Woods
November 03, 2020 Category: Galvanizing

BLOG 2---Robert M. Woods 8/1/2020 Degreasing is an important step to ease creation of the galvanized coating your customer is paying you for. So what processes are available, and what are the general pros and cons of each? First, let us look at them broadly: Cleaning Type Mechanical Solvent Alkaline (Hot Caustic Alone, 165 F) Hydronet type acid degrease Acid-Pickle (without Hydronet D) Biological Wide Range Soils x x x Carbon Emission x x x Evergreen x x x Productivity Improvement x x Hydrogen free x x x Paint removal x x Safety x x Water savings x x x Then lets look at some of the soils that show up in galvanizing, and how the different types of cleaners that galvanziers use do against them, with 5 being the best. Cleaning Type Mechanical Solvent Alkaline

Galvanizing 101

By Bob Woods
July 02, 2020 Category: Galvanizing

From the Desk of Bob Woods: Galvanizing 101 Hot-Dip Galvanizing is the process of alloying iron and molten zinc to create a corrosion-resistant alloy coating. This coating protects steel or iron from rust, both as a barrier and with an electrochemical reaction. To get this alloying reaction to happen, though, the steel or iron surface has to be prepared; mostly, this means cleaning off the surface. The things that can be found on the work can include everything from fingerprints to cosmoline-type grease, light rust to heavy scale, and sometimes other coatings such as stencil, chalk, spray paints, etc. All of this has to come off. Most of the time, the grease and other dirt is removed with either a dip-tank full of a degreaser, often an acidic (such as Hydronet) or a caustic (such as sodium hydroxide boosted with SB Clean). The other common cleaning method is mechanical, such as a shot-blaster, grinder, or even a file. The choice of the type of cleaning is difficult, since almost every

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