Mechanical Engineering Exam > Mechanical Engineering Questions > Consider the following actions:1. Mechanical ...
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Consider the following actions:
1. Mechanical abrasion
2. Diffusion
3. Plastic deformation
4. Oxidation
Which of the above are the causes of tool wear?
1. Mechanical abrasion
2. Diffusion
3. Plastic deformation
4. Oxidation
Which of the above are the causes of tool wear?
- a)2 and 3
- b)l and 2
- c)1, 2 and 4
- d)1 and 3
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Consider the following actions:1. Mechanical abrasion2. Diffusion3. Pl...
Answer should be 1, 2 and 3 but the best answer among available option is (b). Causes of wear are abrasion, sliding, maximum temperature, diffusion and plastic deformation (chipping).
Most Upvoted Answer
Consider the following actions:1. Mechanical abrasion2. Diffusion3. Pl...
The causes of tool wear in machining processes can be attributed to various factors. Among them, the actions mentioned in the question are potential causes of tool wear. Let's discuss each action and its role in tool wear.
1. Mechanical abrasion:
Mechanical abrasion refers to the process of wearing down a material's surface due to the frictional forces generated during machining. When a tool comes into contact with the workpiece, the cutting edges experience rubbing against the workpiece material, leading to abrasion. This abrasive action gradually wears away the tool material and reduces its effectiveness over time.
2. Diffusion:
Diffusion is the process of intermixing atoms between two materials in contact. During machining, the high temperatures generated at the tool-workpiece interface can cause diffusion between the tool material and the workpiece material. This diffusion of atoms across the interface can lead to tool wear as the tool material undergoes chemical changes, alloying, or formation of compounds with the workpiece material.
3. Plastic deformation:
Plastic deformation occurs when a material undergoes permanent shape change due to the applied forces. In machining, the cutting forces exerted on the tool can cause plastic deformation of the tool material. This deformation can result in the formation of wear flats or wear patterns on the tool surface, reducing its cutting efficiency and lifespan.
4. Oxidation:
Oxidation is a chemical reaction that occurs when a material reacts with oxygen. During machining, the high temperatures generated at the tool-workpiece interface can promote oxidation of the tool material. This oxidation process can result in the formation of oxides on the tool surface, leading to increased friction and wear.
Based on the above explanations, it is evident that both actions 1 and 2 contribute to tool wear. Mechanical abrasion (action 1) causes wear through rubbing and friction between the tool and workpiece, while diffusion (action 2) leads to chemical changes and interdiffusion between the tool and workpiece materials. Therefore, the correct answer is option B, which includes actions 1 and 2 as the causes of tool wear.
1. Mechanical abrasion:
Mechanical abrasion refers to the process of wearing down a material's surface due to the frictional forces generated during machining. When a tool comes into contact with the workpiece, the cutting edges experience rubbing against the workpiece material, leading to abrasion. This abrasive action gradually wears away the tool material and reduces its effectiveness over time.
2. Diffusion:
Diffusion is the process of intermixing atoms between two materials in contact. During machining, the high temperatures generated at the tool-workpiece interface can cause diffusion between the tool material and the workpiece material. This diffusion of atoms across the interface can lead to tool wear as the tool material undergoes chemical changes, alloying, or formation of compounds with the workpiece material.
3. Plastic deformation:
Plastic deformation occurs when a material undergoes permanent shape change due to the applied forces. In machining, the cutting forces exerted on the tool can cause plastic deformation of the tool material. This deformation can result in the formation of wear flats or wear patterns on the tool surface, reducing its cutting efficiency and lifespan.
4. Oxidation:
Oxidation is a chemical reaction that occurs when a material reacts with oxygen. During machining, the high temperatures generated at the tool-workpiece interface can promote oxidation of the tool material. This oxidation process can result in the formation of oxides on the tool surface, leading to increased friction and wear.
Based on the above explanations, it is evident that both actions 1 and 2 contribute to tool wear. Mechanical abrasion (action 1) causes wear through rubbing and friction between the tool and workpiece, while diffusion (action 2) leads to chemical changes and interdiffusion between the tool and workpiece materials. Therefore, the correct answer is option B, which includes actions 1 and 2 as the causes of tool wear.
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Consider the following actions:1. Mechanical abrasion2. Diffusion3. Plastic deformation4. OxidationWhich of the above are the causes of tool wear?a)2 and 3b)l and 2c)1, 2 and 4d)1 and 3Correct answer is option 'B'. Can you explain this answer? for Mechanical Engineering 2025 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Consider the following actions:1. Mechanical abrasion2. Diffusion3. Plastic deformation4. OxidationWhich of the above are the causes of tool wear?a)2 and 3b)l and 2c)1, 2 and 4d)1 and 3Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following actions:1. Mechanical abrasion2. Diffusion3. Plastic deformation4. OxidationWhich of the above are the causes of tool wear?a)2 and 3b)l and 2c)1, 2 and 4d)1 and 3Correct answer is option 'B'. Can you explain this answer?.
Consider the following actions:1. Mechanical abrasion2. Diffusion3. Plastic deformation4. OxidationWhich of the above are the causes of tool wear?a)2 and 3b)l and 2c)1, 2 and 4d)1 and 3Correct answer is option 'B'. Can you explain this answer? for Mechanical Engineering 2025 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Consider the following actions:1. Mechanical abrasion2. Diffusion3. Plastic deformation4. OxidationWhich of the above are the causes of tool wear?a)2 and 3b)l and 2c)1, 2 and 4d)1 and 3Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following actions:1. Mechanical abrasion2. Diffusion3. Plastic deformation4. OxidationWhich of the above are the causes of tool wear?a)2 and 3b)l and 2c)1, 2 and 4d)1 and 3Correct answer is option 'B'. Can you explain this answer?.
Solutions for Consider the following actions:1. Mechanical abrasion2. Diffusion3. Plastic deformation4. OxidationWhich of the above are the causes of tool wear?a)2 and 3b)l and 2c)1, 2 and 4d)1 and 3Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering.
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