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Consider the following ingredients used in moulding
1. Dry silica sand
2. Clay
3. Phenol formaldehyde
4. Sodium silicate
Q. These used for shell moulding include
1. Dry silica sand
2. Clay
3. Phenol formaldehyde
4. Sodium silicate
Q. These used for shell moulding include
- a)1, 2 and 4
- b)2, 3 and 4
- c)1 and 3
- d)1, 2, 3 and 4
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Consider the following ingredients used in moulding1. Dry silica sand2...
- Dry silica sand: This is the primary base material in shell molding. It provides the structure and strength to the mold.
- Phenol formaldehyde: This is a thermosetting resin binder used in shell molding. When mixed with a catalyst, it reacts and cures to form a strong bond between the sand grains, creating the shell.
Most Upvoted Answer
Consider the following ingredients used in moulding1. Dry silica sand2...
Shell Moulding and its Ingredients
Introduction:
Shell moulding is a casting process that involves the use of a pattern made from a mixture of dry silica sand and a thermosetting resin binder. This process is widely used in foundry industries for producing complex and accurate castings.
Ingredients used in Shell Moulding:
1. Dry Silica Sand:
Dry silica sand is one of the main ingredients used in shell moulding. It is used as a refractory material to create the shell around the pattern. Silica sand is preferred due to its high refractoriness and thermal stability.
2. Clay:
Clay is another important ingredient used in shell moulding. It is added to the sand mixture to provide better cohesiveness and strength to the shell. Clay acts as a binder and helps in retaining the shape of the shell during the casting process.
3. Phenol Formaldehyde:
Phenol formaldehyde, also known as phenolic resin, is a thermosetting resin binder used in shell moulding. It is mixed with the sand and clay mixture to provide strength and rigidity to the shell. Phenol formaldehyde undergoes a chemical reaction when heated, forming a strong and durable shell.
4. Sodium Silicate:
Sodium silicate, commonly known as water glass, is another ingredient used in shell moulding. It is added to the sand mixture to create a thin, hard shell around the pattern. Sodium silicate acts as a binder and helps in improving the collapsibility of the shell during the casting process.
Conclusion:
Based on the given options, the correct answer is option 'C' (1 and 3). Dry silica sand is used as a refractory material, and phenol formaldehyde is used as a thermosetting resin binder in shell moulding. These two ingredients play crucial roles in the formation of the shell and ensuring the accuracy and quality of the castings produced.
Introduction:
Shell moulding is a casting process that involves the use of a pattern made from a mixture of dry silica sand and a thermosetting resin binder. This process is widely used in foundry industries for producing complex and accurate castings.
Ingredients used in Shell Moulding:
1. Dry Silica Sand:
Dry silica sand is one of the main ingredients used in shell moulding. It is used as a refractory material to create the shell around the pattern. Silica sand is preferred due to its high refractoriness and thermal stability.
2. Clay:
Clay is another important ingredient used in shell moulding. It is added to the sand mixture to provide better cohesiveness and strength to the shell. Clay acts as a binder and helps in retaining the shape of the shell during the casting process.
3. Phenol Formaldehyde:
Phenol formaldehyde, also known as phenolic resin, is a thermosetting resin binder used in shell moulding. It is mixed with the sand and clay mixture to provide strength and rigidity to the shell. Phenol formaldehyde undergoes a chemical reaction when heated, forming a strong and durable shell.
4. Sodium Silicate:
Sodium silicate, commonly known as water glass, is another ingredient used in shell moulding. It is added to the sand mixture to create a thin, hard shell around the pattern. Sodium silicate acts as a binder and helps in improving the collapsibility of the shell during the casting process.
Conclusion:
Based on the given options, the correct answer is option 'C' (1 and 3). Dry silica sand is used as a refractory material, and phenol formaldehyde is used as a thermosetting resin binder in shell moulding. These two ingredients play crucial roles in the formation of the shell and ensuring the accuracy and quality of the castings produced.
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Consider the following ingredients used in moulding1. Dry silica sand2.Clay3.Phenol formaldehyde4.Sodium silicateQ.These used for shell moulding includea)1, 2 and 4b)2, 3 and 4c)1 and 3d)1, 2, 3 and 4Correct answer is option 'C'. 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 ingredients used in moulding1. Dry silica sand2.Clay3.Phenol formaldehyde4.Sodium silicateQ.These used for shell moulding includea)1, 2 and 4b)2, 3 and 4c)1 and 3d)1, 2, 3 and 4Correct answer is option 'C'. 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 ingredients used in moulding1. Dry silica sand2.Clay3.Phenol formaldehyde4.Sodium silicateQ.These used for shell moulding includea)1, 2 and 4b)2, 3 and 4c)1 and 3d)1, 2, 3 and 4Correct answer is option 'C'. Can you explain this answer?.
Consider the following ingredients used in moulding1. Dry silica sand2.Clay3.Phenol formaldehyde4.Sodium silicateQ.These used for shell moulding includea)1, 2 and 4b)2, 3 and 4c)1 and 3d)1, 2, 3 and 4Correct answer is option 'C'. 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 ingredients used in moulding1. Dry silica sand2.Clay3.Phenol formaldehyde4.Sodium silicateQ.These used for shell moulding includea)1, 2 and 4b)2, 3 and 4c)1 and 3d)1, 2, 3 and 4Correct answer is option 'C'. 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 ingredients used in moulding1. Dry silica sand2.Clay3.Phenol formaldehyde4.Sodium silicateQ.These used for shell moulding includea)1, 2 and 4b)2, 3 and 4c)1 and 3d)1, 2, 3 and 4Correct answer is option 'C'. Can you explain this answer?.
Solutions for Consider the following ingredients used in moulding1. Dry silica sand2.Clay3.Phenol formaldehyde4.Sodium silicateQ.These used for shell moulding includea)1, 2 and 4b)2, 3 and 4c)1 and 3d)1, 2, 3 and 4Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering.
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