Metal Forming and Welding Tests

1. Rubber forming is a type of forming process in which polyurethane is used as a die material.

2. Cold rolling process only affects the tensile strength of the material which being rolled.

3. Which of the following are not operated in impression die forging?

4. For how long is the heated steel held in full annealing process?

5. Roll velocity is lesser than exiting velocity.

6. Up to what thickness, can steel be welded using spot welding process?

7. The flow of material in die cavity solely depends on the flow-ability of material.

8. Which of the following methods of heat treatment is best suitable for treating the output of cold rolling?

9. In the hot working of steel material, steel metal may lose its strength due to carbon loss.

10. In the given figure of thermit welding apparatus, what does the question mark represents which part?

11. Oxy-acetylene process is most suited for which of the following process of joining?

12. What is the forging temperature of bronze?

13. After the achievement of welding temperature, electrical connections are established to complete the weld.

14. Which of the following property is considered for controlling the porosity of the metal?

15. Which of the following hammers is also called a gravity hammer?

16. Cold forging causes a reduction in strength of material.

17. In thread rolling, the rolling speed only depends on the tensile strength of the material being rolled.

18. Low carbon steels can be started to forge at what temperature?

19. How is the strength of the material, which is to be rolled, reduced?

20. The following figure represents which rivet head?

21. In the given figure of thermit welding apparatus, what does the question mark represents which part?

22. In crystalline materials, the plastic deformation occurs when the group of atoms or molecules slides past each other.

23. What is the minimum strength of mild steel arc welds on addition of microelements in the slag?

24. In stretch forming, spring-back is a very complicated problem which causes trouble in operating machines during the process.

25. What are the number of opening available in the cutting torch used in oxygen cutting process?

26. High alloys steels are preheated up to what temperature?

27. Cementite is a brittle material.

28. The process of drawing a tube without the use of any mandrel is called as tube sinking.

29. Semi-synthetic fluid is a type of lubricant which is generally insoluble in water.

30. Necking is a localized elongation through which the load carrying capacity of material increases beyond its tensile strength.

31. What is the flame temperature of city gas?

32. In rod drawing, a bearing is used which causes frictional drag on the metallic bar.

33. Elastic deformation can disappear completely when the load is removed from the metal.

34. Which of the following stresses is takes place during performing the wire drawing operation?

35. What is the Vicker's hardness of steel before the HPF process?

36. In rod drawing process, intermediate annealing is required for improving the ductility of material.

37. How many rollers are used in four high rolling mill?

38. Thread rolling has a lot of chip formation.

39. Shearing is a cutting operation in which material or work piece is subjected to shear stresses.

40. Forming dies are generally used in the blanking and piercing operations.

41. Which of the following is not made using extrusion?

42. In two high rolling mill, if the direction of the rollers is reversed, what is it called?

43. The following figure represents which hand tool appliance?

44. Which of the following forming processes is suitable for making utensils and cup shaped objects?

45. Arc welding machine uses only D.C. supply.

46. In the hot working of materials, porosity may increase in the material rather than decrease.

47. In a neutral flame, what is the temperature in the inner core?

48. Which of the following parts is used for holding the metal sheet during blanking operation?

49. Stainless steels are annealed at what temperature?

50. The following figure represents which rivet head?