Sunday 2 September 2018

Diverse Applications for Thermal Spraying

Thermal spraying, also commonly known as metal spraying, is a coating process where a wide range of metals or ceramics can be sprayed onto the surface of another material. There are untold uses for this - here's 10 applications for starters...

1. Wind Turbines

Atmospheric corrosion causes damage to wind turbines. It's for this reason many manufacturers specify thermal sprayed zinc or zinc/aluminium alloys as a method of corrosion protection. Thermal sprayed coatings - using the arc spray process - give a resilient finish, which is less susceptible to damage than many paint coatings.

2. Oil Industry - Pipes, Risers and Structures

Oil industry pipes, risers and structures are often exposed to harsh elements and oil and gas platform structures benefit from the application of thermal sprayed aluminium (TSA). This is done using the arc or flame spray process, where the molten material is atomised by a cone of compressed air and propelled towards the pipes. This spray solidifies when it hits the surface to form a dense coating, which protects against corrosion for in excess of 20 years in the harshest of environments.

3. Bridges

There's usually heavy footfall or traffic over bridges so metal spraying them is ideal, as not only does it protects from corrosion - it also helps extend a bridge's life. The flame spray process, where the wire is fed by a driven roller system through the centre of an oxygen-fuel gas flame and is melted, is ideal for protecting bridges. This is proven to be the best protection from corrosion and can provide protection for up to 20 years to first maintenance.

4. Petro-chemical Plants

In the petro-chemical industry, Corrosion Under Insulation (CUI) - where accelerated corrosion can occur under wet insulation - consumes a significant percentage of maintenance budgets. By protecting against CUI, companies can move towards inspection-free and maintenance-free piping systems and significantly reduce maintenance costs. The spraying metal process is the ideal solution for the protection of refinery and process plant vessels, tanks and steel fabrications, as it's proven to be a very robust coating solution for protecting against CUI.

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