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Brief introduction of Chrome corundum
Chrome corundum（ α- Al2o3-cr2o3) is a solid formed by melting industrial aluminum oxide powder, chromium oxide powder and a small amount of spinel (or) at a high temperature of 2200 ° C.
Features of Chrome corundum
- Resistance to re corrosion and high temperature chemical corrosion
- Toughness is better than white corundum, with similar hardness and low impurity content
- Chromium corundum has the characteristics of high hardness, good wear resistance and good self sharpening
- Chromium corundum has excellent thermal stability, excellent thermal conductivity and low calorific value
- Heat shock resistance, low linear expansion rate, good thermal conductivity, high temperature resistance, high strength under high temperature conditions
Details of Chrome corundum
Chromium corundum abrasive is one of the best quality abrasives. It is used to polish some hard alloy, metal and non-metallic materials. It has the advantages of less impurities, no pollution and high finish. Chromium diamond is also used to manufacture some abrasive products, such as chromium diamond abrasive tools, chromium diamond abrasive tools, etc., and is used to polish and grind some alloy steel, carbon steel, high-speed steel and other high-strength materials. Its cutting efficiency and glossiness are superior to those of white diamond.
Technical Parameter of Chrome corundum
| Physical and chemical indicators | Reference |
| Reference value | Pink, rose red, dark red crystals |
| Main component | α-Al2O3-Cr2O3 solid miscible |
| Crystal size | 600-2000μm |
| Al2O3 content | 97% – 98.5% |
| Cr2O3 content | 0.2% – 2.0% |
| Na2O content | 0.5% – 0.7% |
| True density (specific gravity) | ≥3.9g/cm³ |
| Bulk density | 1.4-1.9g/cm³ |
| Mohs hardness | 9.0 |
| Microhardness | 2200-2300kg/mm² |
| Operating temperature | Operating temperature |
| Softening temperature under load | ＞1700℃ |
| Particle size range | W1.5-W40, F4-F2000, P12-P2500 |