Galvanizing On-Site

Posted on: May 15, 2019, by :

Galvanized steel is valued in industry for its corrosion-resistant properties, particularly for use in automobiles, plumbing and construction. Iron and steel manufacturers often turn to dedicated galvanizing plants for this, focusing their own plants on the base product. However, there is an alternative for businesses that prefer to handle the supply chain in-house.

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The Galvanizing Process

Today, galvanized iron and steel are most often created via hot-dip galvanizing. The steel surface is first cleansed to remove dirt, organic residue, oxidation and mill scale to allow effective bonding. Once clean, a galvanizing kettle or furnace heats high-grade zinc to melting, and the steel parts are immersed in the liquid zinc. A diffusion reaction between iron and zinc binds the two metals. The galvanized parts may then be quenched for reinforcement, and grinding removes any irregularities.

Why On-Site Galvanizing?

Often, a manufacturer relies on contractor services to handle parts of the supply chain for a completed product so that their own facilities and capital can be dedicated to a specific step or component of the product. Some manufacturers instead prefer to own most or all of the supply chain for better control over distribution. In this case, installing hot-dip galvanizing equipment on-site makes that full ownership possible.

Setting Up

Some fabrication plants and companies produce and sell galvanizing kettles and furnaces to other manufacturers that want to install their own infrastructure for this purpose. The size of the equipment varies based on the scope of production and the parts to be treated. Depending on the business and product, the kettle may be constructed and then shipped to the manufacturer’s site, or it may be fabricated in pieces and then assembled there. The latter can also include equipment necessary to connect to gas and power lines, including regulators and safety shut-off valves.

For iron and steel manufacturers seeking to consolidate their production line, an in-house galvanizing plant can be a vital step.