Causes of Rust
Rust is a natural chemical process that occurs when iron or steel comes into contact with oxygen and moisture in the air or other substances. It begins with a reaction between iron and oxygen that forms iron oxide, commonly known as rust. The rust then progresses further as it continually reacts with oxygen and water. Some of the most common causes of rust include exposure to moisture in the outdoor environment, coastal or salty air, chemical spills or improperly stored chemicals, lack of a protective coating like paint. Rust can form on anything made of iron or steel like cars, appliances, tools, furniture or metal infrastructure if they are not properly maintained and protected from rust-causing elements.
Homemade Rust Removers
For mild surface rust on objects around the home, an effective homemade rust remover can do the job without expensive store-bought products. Vinegar is a staple ingredient that can be used to tackle rust. Soak a cloth in distilled white vinegar and lay it on Rust Remover for several hours. The acetic acid in vinegar reacts with the iron oxide to break down the rust. You can also make a paste using baking soda and vinegar. Apply this abrasive paste to the rusty area using an old toothbrush or steel wool pad. The chemical reaction removes rust while the baking soda acts as a mild abrasive. For stubborn stains, make a thicker paste using lemon juice or cream of tartar instead of vinegar. Leave it on overnight before scrubbing off the rust in the morning.
Commercial Rust Removers
When rust is more severe or extensive, commercial rust removers are often a better option to save time and effort. Gel-based rust removers are easy to use, requiring no scrubbing. Simply apply the gel liberally to the rusty area and allow it to dwell for the recommended time. The chemical reaction works to dissolve rust without damaging the underlying metal. For tough cases, look for removers with oxalic acid which is highly effective at rust removal. Always wear protective gloves and follow the product instructions carefully when using chemical rust removers. While gel products are mess-free, paste or liquid rust removers work faster on large surface areas but require scrubbing for best results. Rust converters can also be used to chemically convert rust into a protective coating that stops further rusting.
Surface preparation for rust removal
Proper surface preparation is important for effective rust removal, whether using homemade cleaners or commercial products. First, remove any loose rust scales gently with a wire brush or steel wool. This allows the remover better access to embed into rust crevices. thoroughly degrease the surface using mineral spirits if there is grease, oil or grime inhibiting rust removal. For badly rusted areas, mechanical tools like a needle scaler, scraper or wire brush may be needed to remove heavy rust deposits before chemical treatment. This saves product and effort. It is also best to start rust removal from the outer edges and work towards the center to prevent moving loose rust residue to clean areas
Additional protection after rust removal
Once rust is removed, the surface needs protective treatment to prevent rust from recurring. For metal long-term exposure to elements, primer and paint provide the best protection. Look for rust-inhibitive primers containing zinc or other sealers formulated for corrosion resistance. Apply in thin coats, allowing proper drying time in between. Top with a high-quality latex or oil-based enamel paint suited for exterior or interior use as needed. Other good options are rust converters that form a rust-resistant patina, drying oils like linseed oil offering natural protection, or car wax for short-term anti-corrosion. Reapply protectively coated surfaces as per manufacturer instructions to maintain effectiveness against rust. Proper surface preparation and timely reapplication are vital to make rust removal lasting.
Comparison of rust removal methods
Both homemade remedies and commercial rust removers have merits depending on the level of rust and surface area to be treated. Here is a comparison:
– Homemade removers using vinegar or citrus are inexpensive but work slowly. They require overnight soaking or repeated applications.
– Commercial removers work much faster usually within hours for light-moderate rust. Gel types are no-scrub while paste or liquid need scrubbing.
– For very heavy rust layers, mechanical tools may be needed before any chemical treatment can work efficiently.
– Vinegar or citric pastes are gentle on metal but not very effective on severe rusting. Strong acid-based commercial strippers work best in such cases.
– Large rusted equipment or metal structures are best tackled with paste or liquid removers using a pressure washer for thorough removal.
– Home remedies suffice small patches but extensive rust jobs are time-saving with commercial strippers.
In both DIY and store-bought rust removers have their place. Choosing the right product depends on the rust severity, surface material and area to be treated for quick and effective removal while protecting the base metal.