MANUFACTURING TECHNOLOGY - I UNIT-1 TWO MARKS

Transcription

1 MANUFACTURING TECHNOLOGY - I UNIT-1 TWO MARKS 1. Define foundry? 2. Define casting. 3. Define mould. 4. Define pattern 5. Name the various pattern materials? 6. How is distortion allowances is made on the pattern? 7. When do you make cores? 8. What do you understand by core setting? 9. Explain the core making process? 10. What are the requirements of core sand? 11. Name the different types of core binder? 12. State the various types of core boxes? 13. Mention the main use of core baking ovens? 14. Name the various types of cores? 15. Where the balanced core is generally used? 16. Mention the specific advantages of carbon di oxide process? 17. what are the properties of good moulding sand? 18. What are the different types of moulding sand? 19. What are the ingredients of moulding sand? 20. What is used for mixing of moulding sand? 21. What is meant by tempering of sand? 22. List out any five moulding tools 23. State the various methods for testing moulding sand? 24. Define AFS grain fineness number? 25. Define deformation. 26. State the different types of moulding process? 27. what are the types of crucible furnace? 28. State the main function of tuyeres in cupola furnace?

2 29. What is die casting? 30. Name the coating of investment casting and its constituents? 31. Mention any two applications of investment casting? 32. Name any two cast products of shell mould? 33. Mention any two disadvantage of permanent mould cating? 34. Name four different casting defects? 35. How casting defects are identified? 36. Give four reasons for casting defects `Hot tear` 37. State any two limitations of full mould casting? 38. State the purpose of giving lubricating casting in a gravity die casting? 39. What are the types of alloys cast in cold chamber die casting machines 40. List the factors to be considered in the choice of metal melting furnaces? PART B 1. Describe the various types of pattern materials in detail? 2. Explain the types of pattern in details? 3. Explain the skeleton pattern briefly with a neat sketch? and compare with sweep pattern? 4. What are pattern allowances? Explain briefly each? 5. Discuss the properties of moulding sand? 6. What are the essential qualities of core? And explain each? 7. Explain something about core sand preparation? 8. What are the different types of cores? Explain any three? 9. List out the various stages in core making process? 10. Mention various tests for testing the moulding sand. Explain any three in detail. 11. Write short notes on core sand testing? 12. What are the constituents of moulding sand? Give its details. 13. Name the various ingredients? Explain briefly. 14. With a neat sketch of cupola furnace, explain its operation?

3 15. Explain induction furnace. Mention application and advantage? 16. Describe the various types of casting process? 17. Explain investment casting. What are its advantages? 18. Compare die casting over sand casting process. 19. Explain with a neat sketch the gravity die casting process. 20. Explain the continuous casting process with a neat sketch. UNIT 2 PART A 1. Define welding process. 2. What are the applications of welding process? 3. State the classification of welding process. 4. Define fusion welding. 5. How does the plastic welding differ from fusion welding? 6. List out the different metal joining process. 7. What are the different methods of welding you know? 8. Define autogeneous. 9. Mention the gap between work piece and electrode? 10. What are the functions of flux in the welding electrodes? 11. Define arc crater. 12. What is arc length? 13. Mention any two advantages of D.C and A.C welding. 14. What do you understand by straight polarity? 15. What is the straight polarity used for arc welding? 16. What are the two types of electrodes? 17. What are the three main types of consumable electrodes? 18. Define bare electrode. 19. Which type of electrode is used in TIG Welding? 20. State any two advantages of TIG welding?

4 21. State any two advantages of MIG welding? 22. Define Resistance Welding. 23. Mention the various types of resistance welding? 24. State any two applications of seam welding. 25. What is the function of welding torch? 26. What is the purpose of using flux in gas welding? 27. What are the two types of oxy acetylene system? 28. How the acetylene is stored in cylinder? 29. What is the main use of gas cylinder? 30. State the function of pressure gauges. 31. Why we have to use goggles and gloves? 32. What are the various types of flames? 33. How the neutral flame can be obtained? 34. How many cones will occur carburizing flame? 35. How the oxidizing flame is obtained? 36. What are the two types of lasers? 37. How is electron beam focused? 38. What is the power density in EBW? 39. What is the power rating in EBW? 40. Define plasma arc welding? PART B 1. Explain the method of laser beam welding and give the applications. 2. Explain the method of electron beam welding and give the applications. 3. Describe plasma arc welding and give the applications. 4. Describe ultra sonic welding and give the applications. 5. Describe thermit welding and give the applications. 6. What is friction welding give the advantages and limitations? 7. Distinguish between brazing, soldering and welding. 8. Give briefly on testing and inspection.

5 9. What are the welding of defects and give the remedies. 10. Describe brazing process. 11. Write short notes on soldering process. 12. Describe filler and flux materials used in brazing and soldering process. 13. What is adhesive bonding? Mention its types. 14. What are the advantages, disadvantages and limitations of adhesive bonding? UNIT 3 PART A 1. Define cold working of metals? 2. Define re crystallization temperature. 3. Define the process of mechanical working of metals? 4. Give some examples for mechanical working of metals? 5. Define hot working of metals? 6. What are the advantages of hot working over cold working? 7. Name the two metals having re crystallization temperature below room temperature? 8. What are the advantages of cold working over hot working? 9. What is the starting material for mechanical working of metals? 10. Give the classification of Rolling mills? 11. What are the two common methods of thread rolling? 12. What is meant by semi or warm hot working? 13. What are the advantages of cold rolling? 14. Define forging? 15. Give some basic forging operation? 16. What are the classification of forging process? 17. Define open die forging? 18. Define closed die forging?

6 19. Define press forging? 20. Define upsetting? 21. What are the types of force weld? 22. Define extrusion process? 23. Define extrusion ratio? 24. Give some cold extrusion process? 25. What is meant by cold spinning? 26. Define hot spinning? 27. Define impact extrusion? 28. What is tube drawing? 29. Define wire drawing? 30. What are the classifications of tube drawing process? 31. Define degree of drawing? 32. Name four different press working of operation? 33. What are the types of hammer used in forging operation? 34. What is meant deep drawing? 35. Define slab, plate, sheet, strip. 36. Define foil, bar wire. 37. Explain isothermal forging? 38. Define orbital forging? 39. What are the shape rolling operations? 40. Define gatorizing? PART B 1. Explain the hot working and cold working with suitable examples. 2. Discuss the various forging operations. 3. Discuss closed die and open die forging. 4. Define rolling and discuss according to the classification? 5. Give the advantages of press forging over drop forging? 6. What are the defects in forging? Explain it.

7 7. Define extrusion and explain the various classification. 8. How the pipe and tube are manufactured. 9. Define drawing and discuss the classification. 10. What are the various press working operations. 11. Explain the bending terminology. 12. Differentiate between press forging and hammer forging. 13. Explain the working of some drawing equipments. 14. Explain the flat strip rolling process. 15. Explain the shape rolling operation. 16. What do you understand about thread rolling? Explain. 17. What are the defects in rolled parts. UNIT 4 Part-A (2 Marks) 1. What is sheet metal work? 2. write down any four sheet metal characteristics 3. What is meant by clearance? 4. What is stretching? 5. Define the term spring back. 6. How force exerted on the form block is calculated 7. What are the formability test methods? 8. What is super plasticity of metals? 9. Enumerate the various typical applications of electro magnetic forming process. 10. Name any 4 four high power explosive used in explosive forming? 11. List out major functions which affect the performance in electromagnetic forming? 12. List out and 2 advantages of explosive forming? 13. Give the applications of electro hydraulic forming? 14. What is high energy rate forming process? 15. Mention the few applications of HERF

8 16. Classify the high energy rate forming process? 17. What are materials used for making dies in explosive forming? 18. What is the principle of magnetic pulse forming? 19. What is the basic principle of dynapak machine? 20. What are the types of sheet metal joining tools? 21. What are the type s characteristics of sheet metals? 22. Part-B (16 Marks) 1. Describe shearing operations in a sheet metal work with a neat sketch 2. Describe various types of bending operations with its neat sketches 3. Explain any one method of stretch forming operation with a neat sketch 4. Explain hydro forming process with its neat sketches. State their advantage and applications 5. Explain the power spinning process with a neat sketch.give their applications 6. How magnetic pulse forming process is carried out on sheet metal? 7. Explain peen forming process with a neat sketch 8. What is super plastic of metal? how this process is carried out on sheet metals? UINT-V PART-A (2 Marks) 1. How the plastic is defined? 2. Give some examples of additives 3. Give some examples for thermosetting plastics. 4. Give some example of thermo plastics. 5. Give some additives added to the manufacturing of rubber. 6. What are the processes of thermoplastics? 7. What are the two types of injection moulding? 8. What are the types of compression moulding? 9. define co polymerization 10. What are the foamed plastics?

9 11. Classify the types of plastics 12. What are the characteristics of thermosetting plastics? 13. Give some example for thermosetting plastics. 14. What are the types of injection mouldings? 15. What is extrusion? 16. List the parts used in the transfer moulding. 17. What is the use of torpedo and hopper? 18. What is the use of rotational moulding? 19. What is calendaring? 20. What is Parison? 21. List the types of joining of plastics. 22. Define - solvent welding. Part-B (16 Marks) 1. What are the characteristics of the forming and shaping processes? 2. What are the types of moulding and thermoplastics? 3. Explain the working principles and application of a. injection moulding b. blow moulding c. rotational moulding d. film blowing 4. Explain the thermoforming process 5. Explain induction and ultrasonic methods. 6. Explain working and principle of applications of a. compression moulding b. transfer moulding