Imported Zirconia Alumina Flap Disc

Product Overview

Imported zirconia alumina flap discs are high-performance coated abrasives for high-intensity, heavy-duty grinding. Their abrasive is produced by eutectic arc fusion of alumina and zirconia above 2000℃, combining alumina hardness with zirconia toughness. Imported abrasives, such as the Saint-Gobain NV series, use specialized smelting processes to achieve fewer internal defects and finer, more uniform grains.

The discs provide high grinding efficiency and long service life while helping prevent workpiece burning and discoloration under heavy loads, making them suitable for professional metal finishing and heavy-duty grinding.

Diameters range from 100 mm (4″) to 180 mm (7″), fitting common angle grinders.

Product Parameters

Core Performance Advantages

High toughness and substantially improved wear resistance

Zirconia alumina is approximately 13-15 times tougher than brown fused alumina, resisting fracture and shedding under high impact. Imported premium grades, such as those containing 40% zirconia, perform particularly well in heavy-duty grinding.

Good self-sharpening and high grinding efficiency

Under grinding impact, microcracks propagate along grain boundaries and release small fragments, continually exposing fresh, sharp cutting edges for sustained grinding efficiency.

Low thermal conductivity helps prevent workpiece burning

Zirconia alumina has approximately one-tenth the thermal conductivity of brown fused alumina, limiting heat transfer to the workpiece. Together with the ventilated flap structure, this helps reduce sparks, surface burning and darkening on heat-sensitive stainless steel, titanium and aluminum alloys.

Long service life and good overall value

Imported zirconia alumina flap discs offer over 20% better performance than conventional products in abrasive-belt grinding applications. Compared with conventional abrasives, zirconia alumina provides longer service life and better value, reducing replacement frequency and improving productivity.

Good flexibility and low noise

Flexible abrasive cloth flaps conform to curved surfaces and weld profiles, providing low-noise operation and smooth handling.

Typical Applications

Application areas and specific uses

Stainless steel: weld grinding and surface finishing of sheets and pipes with reduced darkening and marks

Heavy-duty metalworking: grinding billets, cleaning castings, removing slag and dressing flash and burrs

Shipbuilding: grinding hull steelwork and finishing welds

Automotive manufacturing: sheet-metal grinding, surface preparation and weld-spot cleaning

General maintenance: rust removal, casting cleaning and stripping old coatings

Applicable Materials

Material type and suitability

Stainless steel: particularly suitable; low heat discoloration and high surface finish

Heat-resistant steels / high-temperature alloys: particularly suitable for heavy-duty grinding

Titanium / nickel alloys: particularly suitable; low thermal conductivity helps prevent workpiece deformation

Carbon steel: suitable for efficient slag and burr removal

Aluminum alloys: suitable; resists loading and dissipates heat well

Cast iron: suitable for aggressive scale removal

Copper and copper alloys: suitable for fine surface finishing

Wood / stone: suitable for moderate grinding requirements

Selection Guide

Check that the outside diameter (100-180 mm) and bore (16 or 22.23 mm) match the angle grinder.

Choose grit size for the application:

Coarse grinding (40#-60#): heavy stock removal, initial weld grinding and casting cleaning

Intermediate grinding (80#): general grinding and surface finishing

Fine grinding (120# and finer): fine polishing and surface finishing

Choose the disc type:

T27 (flat): suitable for flat-surface grinding

T29 (conical): suitable for welds, edges, bevels and contoured surfaces

Product Specifications

Safe Use Instructions

Ensure the product's maximum rated speed is at least equal to the angle grinder speed and mount it correctly.

Wear personal protective equipment, including protective goggles, a face shield, earplugs and a dust mask.

Do not remove the angle grinder guard.

Check for cracks or missing flaps before use. Do not use a damaged flap disc.

Apply even, moderate pressure. Excessive force can damage the disc or workpiece.

Storage

Store in a cool, dry place away from moisture.

Avoid direct sunlight to prevent adhesive aging.

Store flat and avoid heavy pressure that could cause deformation.