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Assertion (A): Close dimensional tolerances are NOT possible with isostatic pressing of metal powder in powder metallurgy technique.
Reason (R): In the process of isostatic pressing, the pressure is equal in all directions which permits uniform density of the metal powder.
- a)Both A and R are true and R is the correct explanation of A
- b)Both A and R arc true but R is NOT the correct explanation of A
- c)A is true hut R is false
- d)A is false but R is true
Correct answer is option 'D'. Can you explain this answer?
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Assertion (A): Close dimensional tolerances are NOT possible with isos...
A is false. Closed dimensional tolerances are possible with isostatic pressing of metal power in powder metallurgy technique.
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Assertion (A): Close dimensional tolerances are NOT possible with isos...
Close dimensional tolerances are NOT possible with isostatic pressing of metal powder in powder metallurgy technique because the process of isostatic pressing involves applying pressure equally in all directions, which allows for uniform density of the metal powder.
Isostatic pressing is a powder compaction technique that involves subjecting the metal powder to high pressure in a sealed container. The pressure is applied uniformly in all directions, which allows the metal powder to be compressed and take the shape of the mold.
However, despite the uniform density achieved through isostatic pressing, close dimensional tolerances cannot be achieved. This is because the pressure applied in all directions does not provide any control over the movement or flow of the metal powder particles. As a result, there can be variations in the final dimensions of the pressed part.
The lack of control over the movement of powder particles during isostatic pressing can lead to several factors that contribute to the inability to achieve close dimensional tolerances. These factors include:
1. Particle rearrangement: The high pressure applied during isostatic pressing causes the metal powder particles to rearrange themselves. This rearrangement can lead to variations in the density and packing of the particles, which in turn can affect the final dimensions of the pressed part.
2. Elastic recovery: After the pressure is released, the metal powder particles may undergo elastic recovery, causing the part to spring back slightly. This can result in dimensional changes and deviations from the desired tolerances.
3. Mold deformation: The high pressure applied during isostatic pressing can cause the mold to deform slightly. This deformation can also contribute to dimensional variations in the final part.
Overall, while isostatic pressing is an effective method for achieving uniform density in powder metallurgy, it is not suitable for achieving close dimensional tolerances. Other powder compaction techniques, such as die pressing or injection molding, are typically used when dimensional precision is required.
Isostatic pressing is a powder compaction technique that involves subjecting the metal powder to high pressure in a sealed container. The pressure is applied uniformly in all directions, which allows the metal powder to be compressed and take the shape of the mold.
However, despite the uniform density achieved through isostatic pressing, close dimensional tolerances cannot be achieved. This is because the pressure applied in all directions does not provide any control over the movement or flow of the metal powder particles. As a result, there can be variations in the final dimensions of the pressed part.
The lack of control over the movement of powder particles during isostatic pressing can lead to several factors that contribute to the inability to achieve close dimensional tolerances. These factors include:
1. Particle rearrangement: The high pressure applied during isostatic pressing causes the metal powder particles to rearrange themselves. This rearrangement can lead to variations in the density and packing of the particles, which in turn can affect the final dimensions of the pressed part.
2. Elastic recovery: After the pressure is released, the metal powder particles may undergo elastic recovery, causing the part to spring back slightly. This can result in dimensional changes and deviations from the desired tolerances.
3. Mold deformation: The high pressure applied during isostatic pressing can cause the mold to deform slightly. This deformation can also contribute to dimensional variations in the final part.
Overall, while isostatic pressing is an effective method for achieving uniform density in powder metallurgy, it is not suitable for achieving close dimensional tolerances. Other powder compaction techniques, such as die pressing or injection molding, are typically used when dimensional precision is required.
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Assertion (A): Close dimensional tolerances are NOT possible with isostatic pressing of metal powder in powder metallurgy technique. Reason (R): In the process of isostatic pressing, the pressure is equal in all directions which permits uniform density of the metal powder.a)Both A and R are true and R is the correct explanation of Ab)Both A and R arc true but R is NOT the correct explanation of Ac)A is true hut R is falsed)A is false but R is trueCorrect answer is option 'D'. Can you explain this answer?
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Assertion (A): Close dimensional tolerances are NOT possible with isostatic pressing of metal powder in powder metallurgy technique. Reason (R): In the process of isostatic pressing, the pressure is equal in all directions which permits uniform density of the metal powder.a)Both A and R are true and R is the correct explanation of Ab)Both A and R arc true but R is NOT the correct explanation of Ac)A is true hut R is falsed)A is false but R is trueCorrect answer is option 'D'. 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 Assertion (A): Close dimensional tolerances are NOT possible with isostatic pressing of metal powder in powder metallurgy technique. Reason (R): In the process of isostatic pressing, the pressure is equal in all directions which permits uniform density of the metal powder.a)Both A and R are true and R is the correct explanation of Ab)Both A and R arc true but R is NOT the correct explanation of Ac)A is true hut R is falsed)A is false but R is trueCorrect answer is option 'D'. 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 Assertion (A): Close dimensional tolerances are NOT possible with isostatic pressing of metal powder in powder metallurgy technique. Reason (R): In the process of isostatic pressing, the pressure is equal in all directions which permits uniform density of the metal powder.a)Both A and R are true and R is the correct explanation of Ab)Both A and R arc true but R is NOT the correct explanation of Ac)A is true hut R is falsed)A is false but R is trueCorrect answer is option 'D'. Can you explain this answer?.
Assertion (A): Close dimensional tolerances are NOT possible with isostatic pressing of metal powder in powder metallurgy technique. Reason (R): In the process of isostatic pressing, the pressure is equal in all directions which permits uniform density of the metal powder.a)Both A and R are true and R is the correct explanation of Ab)Both A and R arc true but R is NOT the correct explanation of Ac)A is true hut R is falsed)A is false but R is trueCorrect answer is option 'D'. 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 Assertion (A): Close dimensional tolerances are NOT possible with isostatic pressing of metal powder in powder metallurgy technique. Reason (R): In the process of isostatic pressing, the pressure is equal in all directions which permits uniform density of the metal powder.a)Both A and R are true and R is the correct explanation of Ab)Both A and R arc true but R is NOT the correct explanation of Ac)A is true hut R is falsed)A is false but R is trueCorrect answer is option 'D'. 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 Assertion (A): Close dimensional tolerances are NOT possible with isostatic pressing of metal powder in powder metallurgy technique. Reason (R): In the process of isostatic pressing, the pressure is equal in all directions which permits uniform density of the metal powder.a)Both A and R are true and R is the correct explanation of Ab)Both A and R arc true but R is NOT the correct explanation of Ac)A is true hut R is falsed)A is false but R is trueCorrect answer is option 'D'. Can you explain this answer?.
Solutions for Assertion (A): Close dimensional tolerances are NOT possible with isostatic pressing of metal powder in powder metallurgy technique. Reason (R): In the process of isostatic pressing, the pressure is equal in all directions which permits uniform density of the metal powder.a)Both A and R are true and R is the correct explanation of Ab)Both A and R arc true but R is NOT the correct explanation of Ac)A is true hut R is falsed)A is false but R is trueCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering.
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Here you can find the meaning of Assertion (A): Close dimensional tolerances are NOT possible with isostatic pressing of metal powder in powder metallurgy technique. Reason (R): In the process of isostatic pressing, the pressure is equal in all directions which permits uniform density of the metal powder.a)Both A and R are true and R is the correct explanation of Ab)Both A and R arc true but R is NOT the correct explanation of Ac)A is true hut R is falsed)A is false but R is trueCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
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ample number of questions to practice Assertion (A): Close dimensional tolerances are NOT possible with isostatic pressing of metal powder in powder metallurgy technique. Reason (R): In the process of isostatic pressing, the pressure is equal in all directions which permits uniform density of the metal powder.a)Both A and R are true and R is the correct explanation of Ab)Both A and R arc true but R is NOT the correct explanation of Ac)A is true hut R is falsed)A is false but R is trueCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
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