4) The primary issue in fusion welding of material having high coefficient of thermal expansion is O High energy requirement Wider heat affected zone Type-IV cracking High residual stress and distortion
Q: Briefly, Explain the oxy acetylene welding. 2. Explain, oxy acetylene welding equipment's and uses.…
A: 1.Oxy Acetylene Gas Welding (also known as Oxy Fuel Gas Welding or Gas Welding) is a method of…
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Q: 3. What are the characteristics of the different welding rods use in oxy-acetylene welding? Please…
A: given; what are the characteristics of the different welding rods use in oxy-acetylene welding?…
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A: Answer :- Option (d)
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A: What happened in reverse polarity welding
Q: 2. Is it important that base metal and filler rod have the same melting point or made of the same…
A: No, it is not important that base metal and filler rod have the same melting point or are made of…
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A: Quality of flame used in gas welding
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A:
Q: 8 mm thick plates of S275 steel will be welded by SMAW, SAW, GTAW, GMAW and PAW processes. Evaluate…
A: Data given- 8 mm thick plates of S275 steel needs to be welded Processes - SMAW, GTAW, GMAW PAW…
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A: Plasma Arc Welding (PAW) is an arc welding process similar to gas tungsten arc welding(GTAW).
Q: Using illustrations mention the types of flames in the Oxyacetylend Welding.
A: Oxyacetylene weld is a gas weld process where acetylene is burn with the help of oxygen to produce…
Q: 2. What is oxy-acetylene welding flux? Is there a welding rod coated already with flux? What is the…
A: Oxy acetylene welding is the welding process in which mixture of oxygen and acetylene gas is used…
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A: There are three primary flame types: neutral (balanced), excess acetylene (carburizing), and excess…
Q: Question No 15. Which of these method is suitable for joining an air tight or liguid tight container…
A: Option d is correct.
Q: Please answer the attach file
A: *Due to Bartleby policy, only one question can be answered in case of multiple question. If you need…
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A: Several industrial and production operations rely heavily on the welding process. Metals of all…
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A: It is required to choose correct option
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A: what is metal inert gas welding?? answer-In this type of welding consumable type of electrode used.…
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A: Solution:
Q: Illustrate the schematic diagram of shielded metal-arc welding process.
A: To illustrate the schematic diagram of shielded metal arc welding process.
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Q: A type of welding flows, which is the result of a perfect proportion and mixture of acetylene and…
A: Option A is the correct answer.
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A: Note: As per our guidelines we are supposed to answer only the first 3 sub-parts. Kindly repost…
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A: In the submerged arc, welding flux acts as an oxygen barrier by creating a coating for the surface…
Q: What is the purpose of oxy-acetylene welding, and how this process differ from arc welding?
A: Oxy-acetylene welding or gas welding: A joining or welding process which is done by combustion of…
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A: The given question is on the concept of stud welding
Q: 1. In your opinion which of the two welding techniques do you refer? Left hand or Righthand?
A: I always refer right hand welding technique, because it is more efficient than left hand welding…
Q: Gas welding is an example of Seam welding Spot welding Pressure welding Fusion welding
A:
Q: Select TWO (2) types of arc welding processes that are suitable for welding hot passes quickly and…
A:
Q: Select TWO (2) arc welding processes that are suitable for performing rapid welding task especially…
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A:
Q: 9) Which of the following joining- techniques are referred as dual shield welding process? O PAW O…
A:
Q: 16)The ratio of aluminum and iron oxide in thermit welding is: O1.5:1 O 2:1 O 2.5:1 O 3:1
A: As per given question We have find ratio between aluminium and iron in thermit welding
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A: This question is based on the concept of welding.
Q: TIG welding is characterized as
A: Given: TIG Welding To determine: TIG welding characterize as
Q: 21 Which statement is false for Laser beam welding?
A:
Q: Which of the following processes isn't related to the fusion welding? a. electron beam welding O b.…
A: Correct option: (c) diffusion welding
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- 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 jointWhat are the parameters of inert gas welding process?Q4 (a) Discuss the differences between fusion and solid state welding.
- 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.What is metal inert gas welding and the effect of metal inert gas welding process parameters? Diagrams?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.
- 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 temperatureConsider t fcowing parameters in a steady state gas metal arc welding with DC positive electrode polarity: Welding speed:8 m/min Welding voltage : 40V Electrode diameter : 1.5 mm Electrode feed rate : 14 m/min Density of electrode : 8000 kg/m3 Specific heat of electrode : 600 J/kg-K Melting temperature of electrode : 1580°C Latent heat of electrode : 265.6 kJ/kg Ambient temperature : 30°C Electrical efficiency : 65% Melting efficiency : 40% The required welding current is (a) 620 Amp (b) 295 Amp (c) 482 Amp (d) 380 AmpA fas tungsten arc welding operation is performed using a current 300 A and arc voltage of 25 V at a welding speed 10 mm/s. Assuming that the arc efficiency is 60%. Determine the net heat input per unit length of the weld.
- 2.8 Advantages of Submerged Arc Welding Cost per unit length of joint is relatively low The arc is under a blanket of flux, which virtually eliminates arc flash, spatter, and fume. • Extremely high deposition rates and welding speeds are possible. • Sound welds are readily made (with good process design and control). High current densities increase weld penetration and decrease the need for edge preparation. High speed welding of thin sheet steels at over 2.5 m/min is possible. Can be easily Automated Minimum welder training is required (relatively unskilled welders can be employed). • Low hydrogen weld deposits can be produced. • The flux acts as a scavenger and deoxidizer to remove contaminants such as oxygen, nitrogen, and sulphur from the molten weld pool. This helps to produce sound welds with excellent mechanical properties. 26 2.9 Limitations of Submerged Arc Welding Initial cost of wire feeder, power supply, controls, and flux-handling equipment is high. Limited to ferrous…Q1-A shielded metal arc welding operation is performed on steel at E = 30 volts and I = 225 amps. The heat transfer efficiency fi= 0.85 and melting efficiency f₂=0.75. The unit melting energy for steel Um = 10.2 J/mm3. Solve for: (a) the rate of heat generation at the weld and (b) the volume rate of metal weldedSelect an appropriate electrode and flux of Submerged Arc Welding (SAW) process for nickel alloy steel.