Coated Chromium Corundum Abrasive

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As a specialized provider of abrasive materials and technical services, Alfa Chemistry offers coated chromium corundum abrasive. We achieve this by taking premium primary chromium corundum particles and meticulously coating their surfaces with proprietary organic or inorganic auxiliary materials. This seamless encapsulation process, followed by precise heat treatment in controlled kiln environments, transforms the raw material into a highly optimized abrasive. The result is an abrasive with a uniquely rougher particle surface, engineered for an exceptionally strong bond with various bonding agents. This enhanced characteristic makes our coated chromium corundum abrasive ideally suited for meeting the rigorous demands of mid-to-high-end abrasive tool manufacturing.

Key Features

Advanced Coating Technology: Each chromium corundum particle is precisely coated with organic or inorganic additives, forming a uniform, gap-free shell that enhances surface roughness.
Improved Bonding Strength: The roughened surface significantly increases adhesion to resin binders, ensuring better grit retention and tool durability.
Enhanced Toughness: It offers higher mechanical toughness, making them ideal for blending with other abrasives to improve handling and performance.
Superior Grinding Performance: It delivers longer tool life, higher cutting efficiency, and finer surface finish compared to standard chromium corundum.

Available Grades and Applications

The HG-AB033 grade of our Coated Chromium Corundum Abrasive is a standout. Characterized by its distinctive red, multi-faceted particle shape and moderate bulk density, HG-AB033 undergoes a specialized iron red coating treatment.

When incorporated into resin cutting wheels, a strategic blend of HG-AB033 with HG-AB028 results in a notably better tactile feel during operation. For resin grinding wheels, HG-AB033 ensures excellent durability and consistently achieves a high grinding surface finish. These exceptional properties make HG-AB033 the ideal choice for the precision grinding of:

Measuring Tools
Machine Tool Spindles
Instrument Parts
Threaded Workpieces
Template Grinding

Technical Data

Chemical Composition

Al₂O₃	Na₂O	Cr₂O₃	Fe₂O₃
98.05%	0.40%	0.38%	0.50%

Physical Properties

Type	Mohs Hardness	Color	Microhardness	Melting Point	Specific Gravity	Hydrophilia (F46)	Toughness (F46)
α-Al₂O₃	8.0-9.0	Rosy	2200-2300	2050 ℃	≥3.90	240mm	60%

Bulk Density

Grain Size	HG-AB033	Grain Size	HG-AB033
F12	1.73-1.83	F54	1.71-1.81
F14	1.75-1.85	F60	1.69-1.79
F16	1.83-1.93	F70	1.67-1.77
F20	1.82-1.92	F80	1.65-1.75
F22	1.81-1.91	F90	1.63-1.73
F24	1.80-1.90	F100	1.62-1.72
F30	1.78-1.88	F120	1.60-1.70
F36	1.76-1.86	F150	1.58-1.68
F40	1.75-1.85	F180	1.56-1.66
F46	1.73-1.83	F220	1.54-1.64

Available Grit Sizes

We offer our coated chromium corundum abrasive in a comprehensive range of standard grit sizes, from F12 to F400.
We are fully equipped to provide customized enterprise grit standards to precisely match your needs.

Our commitment extends beyond providing high-quality coated chromium corundum abrasive; we also offer comprehensive technical services to help you optimize your grinding processes and achieve superior results. Partner with us for reliable abrasive solutions and professional technical support tailored to your industrial needs.