Various industrial tools and machines are made of metal, which means they are prone to rust. Since rust can easily spread and lead to expensive repairs, prevention is essential. This article explores 12 best practices for preventing rust on machines and tools.
Why Metal Rusts
Metal can be made of a variety of materials, including steel, iron, and aluminum. Rust is an iron oxide with corrosive properties that forms when metal comes in contact with oxygen and water or moisture, which can damage these materials. Additionally, metals are more susceptible to rust in environments with high acidity or salinity, as these corrode the metal faster. For most metals that contain iron, when the iron in the metal is exposed to the elements, it begins to oxidize and form rust. This oxidation process weakens the metal's strength. Here are some tips to prevent rust:01
Use stainless steel: Stainless steel is an alloy of iron and chromium, with a high percentage of chromium forming a barrier that prevents oxygen and moisture from corroding the metal, making stainless steel a great preventative choice for metals exposed to the elements.02
Apply a coating: Coatings can prevent rust by providing a physical barrier between the iron and oxygen, which stops oxidation from occurring. There are a variety of coatings available, from oil-based to synthetic resin coatings, so it's important to choose the right coating for your metal to prevent corrosion and rust.
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Avoid moisture: Rust is caused by oxygen and moisture, so keep metal away from humid environments and cover the metal to prevent it from coming into contact with moisture. 04
Cathode protection: Cathodic protection is a preventative technique that uses an electric current to prevent corrosion. It works by using a sacrificial anode, which essentially acts as an electrical current sink and creates an electrochemical reaction that prevents rust from forming. This is often used on machinery or tools that are exposed to water or other elements, such as: fuel lines, storage tanks, water heaters, and boat hulls. 05
Regular maintenance: Inspecting metal for rust and taking steps to immediately address any rust you find can prevent it from spreading and causing further damage. It's also a good idea to clean your metal regularly, as any dirt or debris will prevent the coating from properly protecting the metal. 06
Use rust-resistant paint: Rust-resistant paints are often specially formulated to prevent metal from corroding. These paints come in a variety of colors and textures and contain additives that prevent metal from corroding. They can be applied to many different types of metals and can help keep your machine or tool rust-free for longer. 07
Bluing Technology: Bluing is a preventative technology that uses a chemical solution to prevent rust. The technology works by forming a blue to black protective layer composed of magnetic iron oxide (Fe3O4) on the metal, which prevents oxygen from coming into contact with the iron and prevents oxidation. This is a passivation process commonly used on guns, tools, and other machines to prevent rust.
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Using Galvanized Metal: Galvanized metal is a metal that has been treated with zinc oxide to prevent rust. The zinc oxide forms a protective layer on the iron that prevents rust. This is an excellent preventative choice for machines and tools that may come into contact with moisture or other elements. Galvanized steel can last for decades, up to 50 years. 09
Using Weathering Steel: Weathering steel is an alloy containing several metals, such as copper, chromium, nickel, and zinc. This metal is extremely corrosion resistant and can prevent rust on machines or tools that are exposed to the elements. Weathering steel has very few pores compared to regular steel, which is composed of tiny pores, a property that significantly increases its corrosion resistance.
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Proper Storage: Metals should be stored in a cool, dry area away from any sources of moisture or other elements that can cause corrosion. Additionally, any metal that is stored outdoors should be covered to protect it from the elements. Before transporting metal for storage, it is important to ensure that the metal is thoroughly clean and free of any dirt or debris as well as any moisture.
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VCI Packaging: VCI packaging is a preventative technology that uses vapor corrosion inhibitors to prevent rust. VCI packaging works by releasing molecules into the air that prevent rust from forming. This technology can be used for small metal tools or tools that are being shipped, as the molecules prevent rust from forming during transportation.
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Proper Precautions: When designing a metal machine or tool, it is important to consider precautions. Metals should be designed to prevent moisture from coming into contact with the metal as much as possible. This can include ensuring that any exposed parts are sealed, away from moisture or other elements, and using rust-resistant materials.
The life of metal tools and equipment can be extended when you take extra steps to prevent rust. By following these preventative tips, you will be able to keep your machines and tools in good condition and avoid any costly repairs.
