Q1: What are brown aluminum oxide and white aluminum oxide?
Brown fused alumina is an abrasive made of bauxite as the main raw material and smelted at high temperature. Its main component is aluminum oxide (Al₂O₃), with a content of more than 94%, and contains a small amount of iron oxide and silicon oxide. White fused alumina is a high-purity abrasive, and its main component is also aluminum oxide, but with a higher purity (about 99%) and almost no impurities.
Q2: What is the difference between brown aluminum oxide and white aluminum oxide in hardness and toughness?
Hardness: White fused alumina has higher hardness than brown fused alumina, so it is suitable for processing high hardness materials.
Toughness: Brown corundum has higher toughness than white corundum, and is suitable for scenes with high requirements for impact resistance, such as rough grinding or heavy grinding.
Q3: What are the main application areas of brown aluminum oxide?
Due to its high toughness and moderate hardness, brown fused alumina is mainly used in: high-intensity grinding scenarios such as rough grinding and heavy grinding. Processing of materials with moderate hardness such as steel, castings, and wood. Polishing and sandblasting, especially surface roughening.
Q4: What are the typical applications of white aluminum oxide?
Due to its high hardness and high purity, white fused alumina is often used for: precision grinding and polishing, such as processing of high-hardness metals and stainless steel. Processing of electronic components and ceramics with high surface requirements. High-precision processing fields such as medical equipment and optical instruments.
Q5: In what cases can brown aluminum oxide replace white aluminum oxide?
Scenarios where brown fused alumina can replace white fused alumina include: The hardness of the processed material is low and the abrasive hardness does not need to be particularly high. The processing accuracy requirements are not high, such as surface rough grinding or deburring. When economic costs are limited, using brown corundum can significantly reduce expenses.
Q6: In what cases can white aluminum oxide not be replaced by brown aluminum oxide?
White fused alumina cannot be replaced by brown fused alumina in the following cases: Precision machining of high-hardness materials, such as high-carbon steel and stainless steel. Processing scenarios with extremely high surface requirements, such as optical mirror polishing. Applications that are sensitive to abrasive impurities, such as medical equipment or semiconductor processing.
Q7: What is the difference in cost between brown aluminum oxide and white aluminum oxide?
The main raw materials of brown fused alumina and white fused alumina are both aluminum stone; but due to different processing methods, the production cost of brown corundum is lower, so the price is significantly lower than that of white corundum. For projects with limited budgets, choosing brown corundum is a more economical solution.
Q8: In summary, how to choose the right abrasive?
The choice of brown fused alumina or white fused alumina should be determined according to specific needs:
If your processing needs tend to be rough grinding or cost control, it is recommended to use brown corundum. If the processing accuracy requirements are high and the processing object is a metal with high hardness or precision parts, white corundum should be selected. By reasonably analyzing the characteristics of the two, the best balance between performance and cost can be found.
