Dia. 4mm-12mm Blue Corundum Grinding Head 3mm Shank Mounted Polishing Points for Steel Molds Rust Removal Repairing

Blue Corundum Mounted Grinding Points (3mm Shank)

Formulated with an advanced titanium-doped aluminum oxide (blue corundum) composite matrix, offering higher alumina purity and enhanced crystal toughness compared to conventional brown fused alumina. Engineered with a durable vitrified ceramic bond that resists grain loading and wheel clogging during heavy-duty metal grinding, deburring, and surface finishing.

Technical Specifications

• Product Type: Mounted Abrasive Grinding Points / Rotary Stone Bits
• Abrasive Material: Blue Corundum (Titanium Oxide-Modified Aluminum Oxide / High-Purity Alumina)
• Bond Type: Vitrified Ceramic Bond
• Sanding & Grinding Applications: Quenched steel grinding, stainless steel weld seam removal, internal bore deburring, and precision mold contouring
• Suitable Materials: Quenched and tempered steel, high-manganese steel, alloy tool steel, stainless steel, cast iron, and hardened metals
• Shank Diameter: 3 mm (approx. 1/8 inch) high-concentricity steel mandrel
• Head Diameters: 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, 12 mm
• Head Profiles: Cylindrical (Flat End) and Bullet (Pointed Tree)
• Tool Compatibility: High-speed die grinders, rotary tools, Dremel-compatible collets, pneumatic micro air grinders, and drill chucks

Head Shapes & Selection Guide

• Cylinder Shape: Best for flat surface leveling, internal cylindrical grinding, edge deburring, and clean right-angle work.
• Bullet / Pointed Shape: Ideal for tight radii, curved mold recesses, fillet weld cleaning, hole chamfering, and intricate contours.

Key Characteristics

• Superior Hardness & Toughness: Titanium-reinforced crystalline structure delivers aggressive cutting rates and extended tool life on tough alloy steels.
• Cool Grinding & Anti-Clogging: Uniform porous vitrified matrix rapidly dissipates heat, preventing thermal cracking and workpiece annealing.
• Vibration-Free Concentricity: Precision-mounted on hardened 3mm steel shanks for smooth, chattering-free operation at high rotary speeds.

Recommended Applications

• Tool & Die Maintenance: Precision dressing, repairing, and cavity blending on injection molds, stamping dies, and quenched workpieces.
• Weld Seam Leveling: Grinding and smoothing welds on stainless steel tanks, piping, and architectural hardware.
• Deburring & Finishing: Precision deburring of drilled holes, machined cast parts, turbine blades, and automotive components.