File Edit View Window Help.OpenQ11QUIZ 2023.pdf - Adobe Reader1107%ToolsFill & SignCommenta-Write five advantages and two disadvantages of welded joints over riveted joints.b- Define gas welding.Q2/ A plate, 75 mm wide and 10 mm thick, is joined with another steel plate by means of singletransverse and double parallel fillet welds, as shown in Figl. The joint is subjected to a maximumtensile force of 55 kN. The permissible shear stresses in the weld material is 50 N/mm2 respectively.Determine the required length of each parallel filet weld. (Neglect the tensile stress in the parallelwelding lines and Design based on the shear stresses only)sarmad. u. s22P 75OfDPUpdate is available xClick here for details.WPRENG12:553/14/2023DENKA

(1)(a) Advantages and Disadvantages of Welded Joints over Riveted JointsAdvantages:Higher…

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Welding: Principles and Applications (MindTap Course List)

8th Edition

ISBN:9781305494695

Author:Larry Jeffus

Publisher:Larry Jeffus

Chapter22: Welding Joint Design And Welding Symbols

Section: Chapter Questions

Problem 1R: List the five joint types used in welding.

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4. Design a welded connection to resist the loading shown below (service load). A double angle tension member, 2 L5x5x5/16, is connected to a 3/8 inch thick gusset plate with fillet welding. Fy = 50 ksi for the angles and Fy = 36 ksi for the gusset plate. Compute the size and length of welding on the side of angles based on LRFD and indicate the information on the sketch. 1 = %" 2L5 x 5 x h6 D = 30 k L= 75 k
An axially-loaded welded angular connection is shown SD-002 . The angular section 150 x 100 x 10 mm having an area of 2400 mm? is welded to a gusset plate having a thickness of 10 mm. All steel is A 36 (Fy = 248 MPa, Fu = 400 MPa) and E (70) electrodes (Fu = 484 MPa) is used. Using the shielded metal-arc welding process. Compute the value of "a" if T = 500 kN. (Please do not round-off to whole number the required thickness, use the exact (2 decimal) value.) 150 mm SD-002
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
1. What do you understand by the term welded joint? How it differs from riveted joint? 2. Sketch and discuss the various types of welded joints used in pressure vessels. What are the consider- ations involved? 3. State the basic difference between manual welding, semi-automatic welding and automatic welding. 4. What are the assumptions made in the design of welded joint? 5. Explain joint preparation with particular reference to butt welding of plates by arc welding. 6. Discuss the standard location of elements of a welding symbol. 7. Explain the procedure for designing an axially loaded unsymmetrical welded section. 8. What is an eccentric loaded welded joint ? Discuss the procedure for designing such a joint. 9. Show that the normal stress in case of an annular fillet weld subjected to bending is given by 5.66 M O = Lsd2 where M= Bending moment; s = Weld size and d= Diameter of cylindrical element welded to flat %3D %3D surface.
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…
T3.2.2 The bracket shown below supports an 18 kN load. The fillet weld extends for full 100 mm length on both sides. What weld size is required to give a safety factor of 3.0 if E60 series welding is used? [Ans. 10 mm] 100 mm 18kN 75 mm Note: There are two 100 mm welds. 1
A bracket to be welded into a steel channel using E-60 electrode 345 Mpa) Two welding sets are suggested as shown in Fig. (1)Based on maximum shear stress failure theory and safety factor of (2.5) (a) Find the weld size for each set. (b) Which set would you recommend A or B ?
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A continuous fillet wild is used to weld two pieces of 7.0-mm-thick austenitic stainless steel plate in an arc-welding operation. The plates are joined at a 90° angle using an inside fillet corner joint. The velocity of the welding head is 6 mm/sec. Assume the cross section of the weld bead approximates a right angle isosceles triangle (a right triangle with the two legs and their corresponding angles equal) with a leg length of 4.5 mm. The length of the weld = 230 mm. The melting factor of the setup = 0.65, the heat transfer factor = 0.90, and the Tm for austenitic stainless steel = 1670°K. Determine (a) The amount of heat (in joules) required to melt the volume of metal in (b) The heat that , (c) The rate of heat generation required at the welding source to accomplish the weld this weld (filler metal plus base metal) must be generated at the heat source
Assume that two 1.5-mm thick steel sheets are being spot welded at a current of 4000 A and current-flow time is 0.3 s. Using electrodes 5 mm in diameter, estimate the amount of heat generated and the amount of heat required to melt the weld nugget. Use an effective resistance of 350 un. Take u= 9,7 Joule/mm Which one of the following are correct? O a. If the electrodes were 7 mm diameter, the amount of heat generated would decrease b. The amount of heat generated by the equipment is between 1600 to 1700 Joules c. The equipment has enough power to weld the steel sheets. d. The equipment does not have enough power to weld the steel sheets e. The amount of heat required is between 700 and 750 Joules
5. A steel cylindrical air receiver with 5 feet diameter and pressure load of 180 psi, design stress of 9500 psi maximum. The pressure vessel is to be provided with a 1.5 in diameter drain valve installed at the bottom of the vessel and a safety pressure relief valve is installed either at the topmost or at the side with a pop-out rating of 200 psi. Assume a 100% weld joint efficiency. The lap welding tensile strength is 65,000 psi. Determine the bursting pressure of this air receiver. psi
Select an appropriate weld technique and joint design for welding 150mm of thick material.

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