Application areas of some welding methods are given below. Match the welding method with the given application areas. A Tungsten Inert Gas Source At the source of the wind turbine towers B Friction Welding Welding of aerospace materials with high heat resistance C Electron Beam Source At the truck chassis weld D Vibration Source In plastic CD box bottom cover assembly E Submerged Arc Welding Spot welding of sheet metal plates F Flywheel Driven Friction Welding In the connection of the automobile axle to the differential box G Gas Welding Thin-Walled Pipe welding H Point source For thin-walled steel pipe welding I Welded Resistance Welding In the production of bi-material valves J Laser Beam Source Root pass welding of reactive materials

Application areas of some welding methods are given below. Match the welding method with the given application areas. A Tungsten Inert Gas Source At the source of the wind turbine towers B Friction Welding Welding of aerospace materials with high heat resistance C Electron Beam Source At the truck chassis weld D Vibration Source In plastic CD box bottom cover assembly E Submerged Arc Welding Spot welding of sheet metal plates F Flywheel Driven Friction Welding In the connection of the automobile axle to the differential box G Gas Welding Thin-Walled Pipe welding H Point source For thin-walled steel pipe welding I Welded Resistance Welding In the production of bi-material valves J Laser Beam Source Root pass welding of reactive materials

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter7: Tubing And Piping

Section: Chapter Questions

Problem 14RQ: When soldering, a flux is used to A. minimize oxidation while the joint is being heated. B. allow...

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A welding operation on an aluminum alloy makes a groove weld. The cross-sectional area of the weld is 30.0 mm2. The welding velocity is 4.0 mm/sec. The heat transfer factor is 0.92 and the melting factor is 0.48. The melting temperature of the aluminum alloy is 650°C. Determine the rate of heat generation required at the welding source to accomplish this weld.
The welding parameters to be used to butt weld a metal alloy are being evaluated. In order to set up the welding machine, the melting factor for the metal (f2) has to be determined. The welding machine can deliver 4000 watts of power and the heat transfer factor for the welding process (f1) is 0.9. The final weld bead consists of 8 0% filler metal and 40% parent metal. The melting temperature of the filler metal and the parent metal is the same 2540 deg F. The cross-sectional area of the weld bead is 0.5 sq inches. The rate at which filler metal is added to the weld is 1 cu inch per min. Conversion factor 1 Btu = 1055 J and 0 deg F = 460 deg R Calculate the melting factor.
A GTAW operation is performed on low carbon steel, whose unit melting energy is 10.3 J/mm3. The welding voltage is 22 volts and the current is 135 amps. The heat transfer factor is 0.7 and the melting factor is 0.65. If filler metal wire of 3.5 mm diameter is added to the operation, the final weld bead is composed of 60% volume of filler and 40% volume base metal. If the travel speed in the operation is 5 mm/sec, determine (a) cross-sectional area of the weld bead, and (b) the feed rate (mm/sec) at which the filler wire must be supplied.
Calculate the allowable duty cycle of Tungsten Inert Gas (TIG) welding machine when a power source of a rated output 300A and a rated duty cycle 60% is used at 200A of maximum welding current usage.
Calculate the heat input of welded Truss if the welding current is 215 amperages, its arc voltage is 21 volts, and 15cm/min. of welding travel speed usage.
State three engineering assumptions to calculate kinematics and dynamic properties of themixture of air-welding fume
The function of gas regulators in the cylinders of gas welding is to: Increase the flow of the gas Control the flames intensity Reduce the hissing sound in wilding operation Keep the proportion of the gases constant
Discuss briefly resistance welding give it area of application and it's merits
a) Why is good eye protection far more important when arc welding rather than gas welding? b) Explain the two dangers that occur from arc welding in confined spaces.
An angle iron made of AISI 1040 CD steel is welded to metal as shown and loaded with a dynamic load varying between +40kN and +60kN. E70XX (Sut = 482MPa, Sy = 393MPa) will be used as the welding electrode. Find the factor of safety of the weld zone. Note: that both static and dynamic loads are applied to the source.
When soldering, a flux is used to A. minimize oxidation while the joint is being heated. B. allow the fitting to fit easily onto the tubing. C. keep the filler metal from dropping on the floor. D. help the tubing and fitting to heat faster.
Why are the chances of receiving arc burns much higher with the shielded metal arc welding process?