What are some reasons that can cause a cutting tool to lose its cutting capacity and therefore its useful life? a) Temperature and breakage. b) T...

The answer is (b), temperature and progressive wear.

A cutting tool loses its cutting capacity and therefore its useful life due to a number of factors, including:

• Temperature: As the cutting tool cuts, it heats up. The heat can cause the tool to soften, making it less sharp and less able to cut effectively.
• Progressive wear: As the cutting tool cuts, it wears down. The wear can cause the tool to become dull, making it less able to cut effectively.
• Breakage: The cutting tool can break if it is subjected to too much stress.

The combination of temperature and progressive wear is the most common cause of cutting tool failure. The heat from cutting softens the tool, making it more susceptible to wear. The wear then causes the tool to become dull, making it less able to cut effectively. This can lead to a vicious cycle, where the tool becomes duller and duller, until it eventually breaks.

To prevent cutting tool failure, it is important to use the correct cutting tool for the job. The cutting tool should be made of a material that is resistant to heat and wear. The cutting tool should also be sharpened regularly to keep it sharp.

In addition to temperature and progressive wear, other factors that can cause cutting tool failure include:

• Contamination: Contamination from the workpiece, coolant, or other sources can dull the cutting tool and lead to failure.
• Vibration: Vibration can cause the cutting tool to wear unevenly and lead to failure.
• Improper lubrication: Improper lubrication can cause the cutting tool to heat up and wear prematurely.

By understanding the factors that can cause cutting tool failure, it is possible to prevent failures and extend the life of cutting tools.