9) State true or false"Electro-slag welding offers better weld propertiesof medium carbon steel plate weld joints ascompared to electro-gas welding in terms of grainstructure"TrueFalse

Given problem is based on manufacturing.

Answered: 9) State true or false "Electro-slag…

Welding: Principles and Applications (MindTap Course List)

8th Edition

ISBN:9781305494695

Author:Larry Jeffus

Publisher:Larry Jeffus

Chapter27: Weldability Of Metals

Section: Chapter Questions

Problem 19R: What problems can occur to stainless steel as it is allowed to form carbide precipitation during...

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What are some of the problems that oxygen can cause in welds?
What are the major atmospheric contaminations of the molten weld metal?
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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
3) Improper cleaning of faying surfaces during fusion welding of carbon steels will primarily lead to Wider heat affected zone O Higher residual stresses Entrapment of gases and formation of inclusions O Higher fracture toughness of weld joint
9) The peak temperature experienced by the partially refined grain zone during welding of medium carbon steel is Higher than liquidus temperature In between liquidus and solidus temperature In between upper and lower critical temperature O Lower than lower critical temperature
QUESTION 1 In an arc welding operation, a groove weld has a cross-sectional area=0.055 in² and is 24 in long. (Round your final answers to 1 decimal place) (a) What quantity of heat (in Btu) is required to accomplish the weld, if the metal to be welded is aluminum? Btu (b) How much heat must be generated at the welding source, if the heat transfer factor = 90% and the melting factor = 60%? H= Btu
8 mm thick plates of S275 steel will be welded by SMAW, SAW, GTAW, GMAW and PAW processes. Evaluate weld groove preparation, welding parameters, welding consumables (electrode, shielding gas etc. ) heat input range, process advantages and economy for each welding process.
Your boss requests a recommendation on which process to use to weld the high strength structural steel rail tank cars hull section. You have this additional information: P-GMAW Productivity is substantially lower. However, you have welders already qualified to do manual p-GMAW welding. Labor is 80% of total cost HYPERFILLⓇ® Productivity gains are important, and the volume of the product is sufficient on the rail tank cars to justify capital investment. With confidence, you respond: Use process because .(Give process and short explanation for why you want to use that process)
Select an appropriate electrode and flux of Submerged Arc Welding (SAW) process for nickel alloy steel.
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4. why Filler metals are used in fusion welding process?

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