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Cutting tool is much harder than the workpiece.Yet the tool wears out during the tool-work interaction, because
[ME 2014,Set-3]
- a)extra hardness is imparted to the workpiece due to coolant used
- b)oxide layers on the workpiece surface impart extra hardness to it
- c)extra hardness is imparted to the workpiece due to severe rate of strain
- d)vibration of induced in the machine tool
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
Cutting tool is much harder than the workpiece.Yet the tool wears out ...
Metal cutting takes place in plastic deformation zone where work hardening takes place as chip get strained.
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Cutting tool is much harder than the workpiece.Yet the tool wears out ...
Answer:
Introduction:
In the process of cutting, the cutting tool is much harder than the workpiece. However, the cutting tool wears out during the tool-work interaction. This can be attributed to several factors such as the presence of a coolant, oxide layers on the workpiece surface, the severe rate of strain imparted to the workpiece, and the vibrations induced in the machine tool. Among these factors, the correct option is C, which suggests that the extra hardness is imparted to the workpiece due to the severe rate of strain.
Explanation:
1. Extra Hardness due to Coolant:
Coolants are generally used during the cutting process to reduce the heat generated at the tool-work interface. They help in maintaining the temperature and lubricating the cutting tool. However, coolants do not impart extra hardness to the workpiece. Instead, they help in reducing the wear of the cutting tool.
2. Oxide Layers on Workpiece Surface:
Oxide layers can form on the surface of the workpiece due to various reasons such as exposure to air or high-temperature processing. These oxide layers can increase the hardness of the workpiece. However, they do not contribute significantly to the wear of the cutting tool. In fact, oxide layers can sometimes act as a protective barrier, reducing the tool wear.
3. Severe Rate of Strain:
During the cutting process, the workpiece material experiences severe deformation and strain. The cutting tool applies a large force, causing the workpiece material to undergo plastic deformation. This severe rate of strain leads to work hardening, which increases the hardness of the workpiece. As a result, the cutting tool experiences more wear due to the increased hardness of the workpiece.
4. Vibration Induced in the Machine Tool:
Vibrations induced in the machine tool can have detrimental effects on the cutting process. They can lead to tool chatter, poor surface finish, and increased tool wear. However, vibrations do not directly contribute to the extra hardness imparted to the workpiece. Therefore, option D is not the correct answer.
Conclusion:
Among the given options, the correct answer is C. The extra hardness imparted to the workpiece is primarily due to the severe rate of strain experienced during the cutting process. This severe deformation and strain causes work hardening, increasing the hardness of the workpiece. Consequently, the cutting tool wears out during the tool-work interaction.
Introduction:
In the process of cutting, the cutting tool is much harder than the workpiece. However, the cutting tool wears out during the tool-work interaction. This can be attributed to several factors such as the presence of a coolant, oxide layers on the workpiece surface, the severe rate of strain imparted to the workpiece, and the vibrations induced in the machine tool. Among these factors, the correct option is C, which suggests that the extra hardness is imparted to the workpiece due to the severe rate of strain.
Explanation:
1. Extra Hardness due to Coolant:
Coolants are generally used during the cutting process to reduce the heat generated at the tool-work interface. They help in maintaining the temperature and lubricating the cutting tool. However, coolants do not impart extra hardness to the workpiece. Instead, they help in reducing the wear of the cutting tool.
2. Oxide Layers on Workpiece Surface:
Oxide layers can form on the surface of the workpiece due to various reasons such as exposure to air or high-temperature processing. These oxide layers can increase the hardness of the workpiece. However, they do not contribute significantly to the wear of the cutting tool. In fact, oxide layers can sometimes act as a protective barrier, reducing the tool wear.
3. Severe Rate of Strain:
During the cutting process, the workpiece material experiences severe deformation and strain. The cutting tool applies a large force, causing the workpiece material to undergo plastic deformation. This severe rate of strain leads to work hardening, which increases the hardness of the workpiece. As a result, the cutting tool experiences more wear due to the increased hardness of the workpiece.
4. Vibration Induced in the Machine Tool:
Vibrations induced in the machine tool can have detrimental effects on the cutting process. They can lead to tool chatter, poor surface finish, and increased tool wear. However, vibrations do not directly contribute to the extra hardness imparted to the workpiece. Therefore, option D is not the correct answer.
Conclusion:
Among the given options, the correct answer is C. The extra hardness imparted to the workpiece is primarily due to the severe rate of strain experienced during the cutting process. This severe deformation and strain causes work hardening, increasing the hardness of the workpiece. Consequently, the cutting tool wears out during the tool-work interaction.
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Cutting tool is much harder than the workpiece.Yet the tool wears out during the tool-work interaction, because[ME 2014,Set-3]a)extra hardness is imparted to the workpiece due to coolant usedb)oxide layers on the workpiece surface impart extra hardness to itc)extra hardness is imparted to the workpiece due to severe rate of straind)vibration of induced in the machine toolCorrect answer is option 'C'. Can you explain this answer?
Question Description
Cutting tool is much harder than the workpiece.Yet the tool wears out during the tool-work interaction, because[ME 2014,Set-3]a)extra hardness is imparted to the workpiece due to coolant usedb)oxide layers on the workpiece surface impart extra hardness to itc)extra hardness is imparted to the workpiece due to severe rate of straind)vibration of induced in the machine toolCorrect answer is option 'C'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Cutting tool is much harder than the workpiece.Yet the tool wears out during the tool-work interaction, because[ME 2014,Set-3]a)extra hardness is imparted to the workpiece due to coolant usedb)oxide layers on the workpiece surface impart extra hardness to itc)extra hardness is imparted to the workpiece due to severe rate of straind)vibration of induced in the machine toolCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Cutting tool is much harder than the workpiece.Yet the tool wears out during the tool-work interaction, because[ME 2014,Set-3]a)extra hardness is imparted to the workpiece due to coolant usedb)oxide layers on the workpiece surface impart extra hardness to itc)extra hardness is imparted to the workpiece due to severe rate of straind)vibration of induced in the machine toolCorrect answer is option 'C'. Can you explain this answer?.
Cutting tool is much harder than the workpiece.Yet the tool wears out during the tool-work interaction, because[ME 2014,Set-3]a)extra hardness is imparted to the workpiece due to coolant usedb)oxide layers on the workpiece surface impart extra hardness to itc)extra hardness is imparted to the workpiece due to severe rate of straind)vibration of induced in the machine toolCorrect answer is option 'C'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Cutting tool is much harder than the workpiece.Yet the tool wears out during the tool-work interaction, because[ME 2014,Set-3]a)extra hardness is imparted to the workpiece due to coolant usedb)oxide layers on the workpiece surface impart extra hardness to itc)extra hardness is imparted to the workpiece due to severe rate of straind)vibration of induced in the machine toolCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Cutting tool is much harder than the workpiece.Yet the tool wears out during the tool-work interaction, because[ME 2014,Set-3]a)extra hardness is imparted to the workpiece due to coolant usedb)oxide layers on the workpiece surface impart extra hardness to itc)extra hardness is imparted to the workpiece due to severe rate of straind)vibration of induced in the machine toolCorrect answer is option 'C'. Can you explain this answer?.
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