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Consider the following tool materials:  
1. HSS
2. Cemented carbide
3. Ceramics
4. Diamond
The correct sequence of these materials in decreasing order of their cutting speed is
  • a)
    4, 3, 1, 2
  • b)
    4, 3, 2, 1
  • c)
    3, 4, 2, 1
  • d)
    3, 4, 1, 2
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Consider the following tool materials:1. HSS2. Cemented carbide3. Cera...
Ans. (c) Why Diamond is not used in high speed? Diamond has a tendency to revert at high temperatures (700°C) to graphite and/or to oxidize in air. But ceramics are applicable upto 1300°C. So highest cutting speed with ceramics.
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Most Upvoted Answer
Consider the following tool materials:1. HSS2. Cemented carbide3. Cera...


Explanation:

1. Diamond (4): Diamond is the hardest material among the given options, making it the fastest cutting tool material. It is capable of cutting through even the hardest materials with ease, providing high cutting speeds.

2. Ceramics (3): Ceramics come next in the sequence due to their high hardness and ability to withstand high temperatures. They offer good cutting speeds and are commonly used in high-speed machining applications.

3. Cemented carbide (2): Cemented carbide is a popular tool material known for its high wear resistance and toughness. While it offers good cutting speeds, it is not as fast as diamond or ceramics.

4. HSS (1): High-Speed Steel (HSS) is the slowest among the given materials in terms of cutting speed. It is more suitable for lower speed machining operations and is not as efficient as diamond, ceramics, or cemented carbide.

Therefore, the correct sequence of these tool materials in decreasing order of cutting speed is 3 (Ceramics), 4 (Diamond), 2 (Cemented carbide), 1 (HSS).
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Consider the following tool materials:1. HSS2. Cemented carbide3. Ceramics4. DiamondThe correct sequence of these materials in decreasing order of their cutting speed isa)4, 3, 1, 2b)4, 3, 2, 1c)3, 4, 2, 1d)3, 4, 1, 2Correct answer is option 'C'. Can you explain this answer?
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