by | Mar 24, 2023 | Drilling

Have you ever wondered, “What is phosphating?” It’s a pretreatment method for corrosion protection with organic coatings such as paints and polymer films. Facilitation of these coatings typically includes iron zinc or manganese crystals. The layer of phosphate coating gives the metal corrosion resistance. 

Phosphating is a surface preparation method for ferrous metals before coating or painting. It increases corrosion prevention and also helps improve anti-friction properties. In addition, the process precedes powder coating, which involves metal removal. This guide explores the basics of phosphating and its relevance.

What is phosphating? Discover what it is, its benefits, and the types of phosphating you should know. Click To Tweet

What is it?

Phosphating is a corrosion prevention method applied to carbon steel, low-alloy steel, and cast iron as a pretreatment before coating or painting. It converts a steel surface to iron phosphate, which most people use with another corrosion protective method. We do this to our BOPs to provide extra durability.

Phosphating Benefits

These types of coating provide strong adhesion and prevent corrosion. It also improves the friction properties of sliding components, prevents galling, and inhibits rust characteristics. Some of these coatings are functional on military equipment, like ammunition, to help them withstand harsh weather conditions, but we use them mainly for our blowout preventers and other equipment

Types of Phosphating

 Three types of phosphating are iron, zinc phosphate, and manganese phosphating.

  • Iron phosphating: Protects against oxidation and increases paint adherence and resistance. Although this method offers the least corrosion resistance, it is the most commonly used on parts not subjected to high levels of corrosion because of its low cost.
  • Zinc phosphating is common in the automotive industry and mainly protects ferrous metals. This method increases lubricity and carries paint, oils, and waxes.
  • Manganese phosphating: is the most absorbent and wear-resistant and prevents metal-to-metal contact. However, it’s not highly corrosion-resistant like zinc phosphating. This coating type also provides excellent adhesion and electric isolation. 

Let BOP Products Help

Now that you can answer the question, “What is phosphating?” choosing the right type depending on your needs is more effortless. However, working with professionals and choosing the right products will give the best results. To be safer, select BOP Products because we offer high-performance and high-quality equipment.

Contact us today to help you discover more about this process and blowout preventers.

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