Rust is the oxidation of the iron that converts it into orange-flake iron oxide on the surface of the metal which is exposed to an open environment. For the formation of rust, the availability of oxygen is necessary. The iron reacts with oxygen in the presence of water or humidity. The presence of the rust on the surface of the metal not only makes it unsightly but also damages the metal by reducing its strength. Rust is like cancer for metal so it is important to protect the metal from corrosion. To save the metal from this problem electroplating is done but the process of electroplating is very costly and cannot be applied in every scenario. For the protection of metallic things, it is necessary to use paint to protect them from rusting. This increases their life by not letting it disintegrating into oxides.  

Almost every item around us is made of metal and requires paint to keep it safe. For example, cars, bicycles, gates, doors, and many more. If these items are not protected not only, they will turn ugly in small time but also their life is very much affected by rust. The items which are present in more humid environments are more prone to rust. 

The paint layer is applied to the metal surface to block its contact with the outside environment. The oxygen and humidity presence in the environment increase the speed of the corrosion process. So, it is necessary to cut the contact between metal and the environment to keep it safe. Rust protection paints are usually oil-based and required more than one layer. The oil-based paints require more time to dry so the metal painting process is long. While applying the paint you cannot use a roller, using a brush or a spray are the only options. The paint can be applied to any newly made metal surface immediately. If the surface is old and rusty it will take some time to prepare the surface before applying the paint layer to it. If the surface of the metal is old and not smooth the following steps should be taken before applying the paint layer. If not, the paint layer will come off very quickly and result in the endangering of the metal by exposing it to the open environment.

The surface preparation of the metal is very important for the proper sticking of the paint to the surface. Before painting, clean the surface by washing it with water to remove any kind of dirt or filth off it. The next step is to make the surface smooth, this is a critical and difficult process. All the corrosion should be removed before applying a new layer of the paint. Use different grades of sandpaper to make the surface smooth and shiny. You can grind the surface if the discontinuities do not come off with the sandpaper. This process can be exhausting if you have to do it on large scale. If the surface area to be painted is small then you can perform the task by yourself otherwise hire a professional. Make the surface completely dry before applying the paint layer.

The type of paint used depends on the type of application, some types require a primer layer before the paint layer. This is required because the threat of corrosion forming is greater so stronger protection is required. The primer layer is applied to provide a very smooth surface for the paint to stick. The protection period of the paint depends on the time for which the layer sticks to the surface. The moment the paint layer starts to come off the metal starts to lose its strength. The underwater or underground application requires a stronger paint layer because exposed metal will be destroyed at a very fast period as compared to regular applications. Similarly, metal products present in the garden or open environment are more prone to rusting as compared to the ones in a room. This is due to the increased humidity levels in the form of rain and dew. 

To save to metal from rusting keep it dry and clean and away from water. The oxygen present in the water reacts with iron to make iron oxide. This is the reason the outdoors metals are rustier than the ones indoor. Any kind of scratches should be prevented because they expose the metal surface and hold water. They start the rusting process that keeps on spreading on the whole surface of the water. The growing process of the rust is very fast so, keep an eye on it and scratch it off the surface as soon it forms and paint the surface again. Rust free paint is usually applied to the vehicles and other applications by the spraying process. You can use a brush for small applications but for large scale painting job paint is sprayed with compressed air.  

For best results and long-term protection of the metal prepare the surface very carefully, use a good quality paint, and keep an eye on it for regular maintenances. Industrial application of the metal requires more care and strong anti-corrosive paint because the metal may be exposed to some kind of chemical reaction in which rust can spoil the final results or the excess amount of oxygen is present and it is hard for paint to protect for a long time. Scratch off any rust or previous paint layer for good finish otherwise, the paint will come off in form of blisters. You can save money by painting the metal things because the paint will increase the life of the object and you do not have to buy it again anytime soon. The colour selection of the paint is not much of a difficult job so buy a colour that you like or it provides a good texture to the surroundings. If the application is tough make sure you use a primer layer first to provide a smooth surface for the paint to stick to. The only efficient way to keep the metal safe and deal with rust is to avoid it in the first place. Keep the metal dry and use paint of high quality and maintain a regular check-up to monitor the surface. 

Anti-corrosive metal paints are available in a variety of types and paint colours at www.paintoutlet.co.uk. All types of rust-free paints are available, you can buy in accordance with your application. Along with metal paints, various other pints like masonry, anti-mould, and insulation paints are available here. Good quality paint products are delivered at your doorstep at very reasonable prices.