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Welder Practice Test: Weldability of Steel
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Steel's weldability is its ability to be welded without cold cracking. It's inversely proportional to steel's hardenability.

Welder Practice Test: Weldability of Steel
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25 Questions

1. What type of gas flame is used to weld 2mm mild steel by brazing method?
2. Which size of filler rod should be used to weld 2mm thick MS sheet?
3. What is the pre-heating temperature of cast iron?
4. What is the angle of pipe axis with the base for making an elbow joint?
5. What is the type of distortion shown?
6. What makes for the buckling of weld joint, in stainless steel during cooling?
7. What is the name of the flame shown in figure?
8. What is the effect of expansion and contraction due to heat in welding?
9. Which type of cast iron possess higher compressive strength?
10. What is the 6’o clock position in CW pipe welding refers to in 5G position?
11. What benefit we get out of a carburising flame?
12. Which type of stainless steel is weldable?
13. What size of CCMS filler rod is used for finish run of ɸ 50mm pipe root welded using ɸ1.65mm filler?
14. Which heat treatment process causes the reduction of brittleness in the steel?
15. What is the current range required for 3.15mm dia MS electrode in arc welding?
16. What should be the bevel angle for edge preparation of 6mm thick pipe welding?
17. What size of electrode is used to weld 5 mm wall thickness pipe?
18. Which process causes the increase in the strength of part after fabrication?
19. Which one of the following methods of welding is not a method used to control distortion?
20. What is the purpose of copper coating on mild steel filler rod used in gas welding?
21. What procedure is followed in welding pipe in 5 G position?
22. What is the name of the part ‘x’ shown of a portable cutting machine?
23. What is the welding defect in base metal gets melted and a groove formed along the toe of the weld?
24. What is the method of controlling method of distortion shown?
25. What is the cause of hair line separation in the bead in arc welding?

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