Grinding materials with exceptionally high tensile strength is best achieved using which abrasive ?
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Answer: C. Aluminium oxide
Explanation
Aluminium oxide is well-suited for grinding materials with high tensile strength properties. It provides the necessary toughness and fracture resistance needed for steel grinding wheels. This abrasive cuts carbon steels effectively without breaking down prematurely under heavy loads. Grinding wheels use hard abrasive grains bonded together to remove material from workpieces. Abrasive selection depends directly on the mechanical tensile strength of the metal being ground. Aluminium oxide (corundum) is a tough synthetic abrasive manufactured for metalworking.
Tool and die makers use aluminium oxide wheels to sharpen high-tensile steel machine components. Manufacturing workshops stock various abrasive wheels tailored to specific metal hardness levels. Choosing the correct grinding wheel prevents workpiece burn and excessive abrasive wear. Silicon carbide is typically used for grinding low-tensile materials like cast iron and non-metals. Corundum is chemically aluminium oxide, but specific grades are engineered for distinct applications. Boron carbide is extremely hard and expensive, usually reserved for specialized lapping tasks.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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