I need the answer as soon as possible 1) In an arc welding process, which of thefollowing parameters has mostinfluence on the material flow's magnitude anddirection within a small weld pool?a. Arc pressureb. Marangoni stressc. Buoyancy forced. Electromagnetic force

Explanation Marangoni effect: Due to marangoni effect thetransfer of mass take place at the…

Answered: In an arc welding process, which of the…

In an arc welding process, which of the following parameters has most influence on the material flow's magnitude anc direction within a small weld pool?

Welding: Principles and Applications (MindTap Course List)

8th Edition

ISBN:9781305494695

Author:Larry Jeffus

Publisher:Larry Jeffus

Chapter10: Gas Metal Arc Welding Equipment, Setup, And Operation

Section: Chapter Questions

Problem 4R: In short-circuiting transfer, what type of current alloys the liquid metal at the electrode tip to...

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Answer by true (T) or false (F) for the folling sentences 1. Fusion welding means that the two surfaces to be joined and the filler metal are meling during welding and then solidifying in similar menner to local casting process. 2. In oxyacetylene welding process, the welding is done using oxidizing flame only. 3. Explusive welding process produces strong joints of dissimilar materials that are not weldable by are. 4. Hot working leads to eliminating the porosity in the metal and increasing the strength and hardness. 5. Work hardening is a characteristic induced in the processing part because of the heat treatment.
5) The type of environment that offers best protection to the molten weld pool during fusion welding is Inert gas Vacuum Inactive gas O Molten flux
8) The correct ways to control liquation cracking tendency in fusion weld joint are I. Use of filler metal that solidifies before the partially melted zone I. Use of single pass welding with higher net heat input instead of multipass welding III. Use of high energy density processes IV. Preheating the substrates V. Use of base metals with fine grain structure OI, II, and III II, and IV OII, IV, and V O II, III and IV
QUESTION 3 Welding is a material joining process in which two or more parts are fused at their contacting surfaces by a suitable heat and/or pressure application. Several techniques of welding process are significant to join thin components at high precision and minimum defects. Select the best welding process to join aluminium sheets to produce floor panels in the Airbus military transport aircraft. Discuss in detail the chosen process, including the schematic diagram and justify the reason for choosing the selected process. Justify other possible applications of the process.
6) Residual stresses in the GMAW joint can be reduced through Use of low coefficient of thermal expansion and low yield strength filler metal O Increasing the weld metal volume Increasing welding current O Developing continuous multiple pass weld beads
d) A shielded metal arc-welding operation is performed at a current of 175A and voltage of 20V. The melting factor f; = 0.5 and the power can be transferred to the work surface with a heat transfer factor fi= 0.9. The metal to be welded is low carbon steel, with a melting temperature of 1760K. A continuous fillet weld is to be made with a cross-sectional area of 20 mm². Determine: i) The power required in this arc-welding operation, ii) The rate of heat generation at the weld, iii) The Volume rate of metal welded, iv) The travel speed at which the welding operation can be accomplished.
» A Moving to another question will save this response. uèstion 18 In 'reverse polarity' of arc welding O A Electrode is connected to + and most of the heat is generated at the electrode O B. Electrode is connected to - and most of the heat is generated at the workpiece O C. Work piece is connected to + and most of the heat is generated at the workpiece O D. Work piece/is connected to-jandimost of the heat is generated at the workpiece Windows buau licyl Jäil e IT:ET T-T/-E//V ENG 4) %2:
9) State true or false "Electro-slag welding offers better weld properties of medium carbon steel plate weld joints as compared to electro-gas welding in terms of grain structure" True False
Arc welding is a pressure welding process. Select one: True False
I need the answer as soon as possible
8) Consider the following statements regarding the Resistance micro-welding: A: Higher contact resistance is observed in resistance micro-welding compared to large- scale resistance welding. R: The electrode pressure is much lower in micro-welding. a. Both A and Rare correct, and R is the correct reasoning of A. b. Both A and R are correct, and R is not the correct reasoning of A. c. Only A is correct, and R is incorrect. d. Only R is correct, and A is incorrect.
esponse. Quèstion 13 In 'reverse polarity' of arc welding O A. Electrode is connected to + and most of the heat is generated at the electrode B. Electrode is connected to - and most of the heat is generated at the workpiece C. Work piece is connected to + and most of the heat is generated at the workpiece O D. Work piece is connected to and most of the heat is generated at the workpiece A Moving to another question will save this response. Cop