How do you get those old surface from scratches to super shiny? If you want to enter into the world of metal polishing, you need a little know-how and the right power tools. This article will teach you the fundamentals of metal polishing, encompassing materials such as aluminum, steel, and stainless steel. When you do it right, the results are sure to impress you！
1.Chemical rust removal
Immerse metal components in an acid solution to chemically eliminate rust, oxide scale, and other corrosive compounds from the metal surface. Hydrochloric acid, sulfuric acid, phosphoric acid, nitric acid, and hydrofluoric acid are all common pickling acids. In most industries, chemical processes are utilized.
What should you do if you have rusty metal goods at home such as knives, locks, and keys? Here are a few do-it-yourself rust removal techniques.
- Make use of white vinegar. Vinegar has the ability to chemically react
with rust on metal, breaking it down. You may remove the rust by soaking the metal in white vinegar for a few hours and then wiping it down.
- Make use of lime and salt. Squeeze the lime juice over the corroded
area after completely coating it with salt. Use as much lime juice as possible and leave it to sit for 2 to 3 hours before cleaning away the combination.
2.Manual Rust Removal
You can use iron sandpaper, a scraper, a spatula, a wire brush for rust removal, and other hand tools. This method is labor-intensive and has a poor production efficiency, but it is simple and adaptable to use, and it is still in use today.
For those raw extruded or cast metals such as aluminum and stainless steel, grinding is a critical first step in achieving a mirror polishing. You can use wire cup wheel or angle grinder flap disc to remove rust. If you’re using relatively smooth metal, you probably don’t need to sand. Remember that sanding never makes it shinier, but it can save you time and make the surface flatter.
Tips For Polishing With Sandpaper
Begin with coarser grains and work your way up to 1,500-2,000 grains in 200-grain increments. When hand sanding, waterproof abrasive paper is more efficient. To begin, evaluate casting lines or scratches to establish the abrasive size of the sandpaper. In general, use P320 sandpaper if you can feel the scratches. It will undoubtedly make effective use of your time. Begin with coarse sandpaper and work your way up to 1500-2000 high grit sandpaper or a sanding disc in 200 grit increments. This can significantly reduce your polishing time while producing a polishing effect that will satisfy even the most demanding customers. Click BINIC ABRASIVE, you can find wet sandpaper in various grains and sizes here. Last but not least, try to keep the sandpaper as moist as possible to avoid clogging. This is especially important when you’re polishing aluminum.
3.Power Tool Rust Removal
Power tools or tools powered by compressed air, such as electric grinders, pneumatic grinders, and other tools, can be used to drive grinding wheels, sanding discs, wire cup wheels, and so on. Power tools can typically remove all loose scale, rust, old paint film, and other potentially hazardous particles, but they cannot remove firmly adherent oxide scale, rust, and old paint film on the steel surface.
4.High-Pressure Water Rust Removal
Using water as the medium, high pressure is generated by the high-pressure producing device and immediately expelled from the nozzle; the water jet produces a highly concentrated energy that strikes and grinds the cleaned metal surface like a water arrow. The ultra-high pressure water jet is inserted as a wedge between the scale layer and the metal surface, removing oxide scale, old coating, and other contaminants from the workpiece’s surface, as well as very hard corrosion products. When the abrasive is mixed into the water, the action is enhanced.
Apart from the tips just mentioned, others option for surface preparing – are Sand blasting, flame rust removal and so on. You can search the BINIC Abrasive to find the abrasive and shape that is right for your work piece. BINIC-steel cutting disc factory and wire wheel manufacturers.