Brown corundum can be used to grind metal plates, and due to its high hardness, good wear resistance and high toughness, it is particularly suitable for rough grinding, deburring, polishing and other treatments on metal surfaces123. The following are specific applications and advantages:
1. Applicable metal plate types
Brown corundum is suitable for grinding a variety of metal plates, including:
Stainless steel (deoxidation layer, polishing)
Carbon steel (rust removal, surface rough grinding)
Aluminum alloy (deburring, surface treatment)
Brass, bronze (polishing, deoxidation layer)5
2. Specific application methods
(1) Sandblasting
Use: Remove oxide scale, rust, and old coating on the surface of metal plates, increase surface roughness to enhance coating adhesion.
Recommended particle size: F80-F150 (medium coarse particle size, suitable for quick cleaning)16.
Advantages: More durable than quartz sand and does not pose a risk of silicosis4.
(2) Bonded abrasives (grinding wheels, abrasive belts)
Resin/ceramic grinding wheels: used for surface grinding and edge chamfering of metal plates.
Abrasive belts/sandpaper: used for manual or mechanical polishing, such as mirror finishing of stainless steel plates27.
(3) Free grinding (grinding stones, polishing media)
Spherical grinding stones: used for deburring and chamfering, suitable for precision metal parts3.
Vibration/drum polishing: used with brown corundum abrasives to batch process small metal plates3.
3. Advantages
High hardness (Mohs 9.0): harder than metal, can efficiently cut surfaces16.
High temperature resistance (1850℃): suitable for high-speed grinding, not prone to failure due to heat1.
Good toughness: more impact-resistant than white corundum, suitable for coarse grinding5.
Low cost: more economical than silicon carbide and diamond abrasives5.
4. Notes
Grit selection:
Coarse grinding (F36-F80): fast material removal.
Fine grinding (F150-F220): Improve surface finish by 16.
Binder selection:
Resin binder: Suitable for precision polishing.
Vitrified binder: Used for high-precision grinding7.
Environmental protection and safety: Dust removal equipment is required during sandblasting to avoid dust pollution