Welding: Principles and Applications (MindTap Course List)
8th Edition
ISBN: 9781305494695
Author: Larry Jeffus
Publisher: Cengage Learning
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Textbook Question
Chapter 17, Problem 24R
What can cause undercutting on a 3F tee joint?
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Students have asked these similar questions
Q1: Determine the length, angle of contact, and width of a 9.75 mm thick
leather belt required to transmit 15 kW from a motor running at 900 r.p.m. The
diameter of the driving pulley of the motor is 300 mm. The driven pulley runs at
300 r.p.m. and the distance between the centers of two pulleys is 3 meters. The
density of the leather is 1000 kg/m³. The maximum allowable stress in the
leather is 2.5 MPa. The coefficient of friction between the leather and pulley is
0.3. Assume open belt drive.
5. A 15 kW and 1200 r.p.m. motor drives a compressor at 300 r.p.m. through a pair of spur gears having
20° stub teeth. The centre to centre distance between the shafts is 400 mm. The motor pinion is made
of forged steel having an allowable static stress as 210 MPa, while the gear is made of cast steel
having allowable static stress as 140 MPa. Assuming that the drive operates 8 to 10 hours per day
under light shock conditions, find from the standpoint of strength,
1. Module; 2. Face width and 3. Number of teeth and pitch circle diameter of each gear.
Check the gears thus designed from the consideration of wear. The surface endurance limit may be
taken as 700 MPa. [Ans. m = 6 mm; b= 60 mm; Tp=24; T=96; Dp = 144mm; DG = 576 mm]
4.
G
A micarta pinion rotating at 1200 r.p.m. is to transmit 1 kW to a cast iron gear at a speed of 192 r.p.m.
Assuming a starting overload of 20% and using 20° full depth involute teeth, determine the module,
number of teeth on the pinion and gear and face width. Take allowable static strength for micarta as 40
MPa and for cast iron as 53 MPa. Check the pair in wear.
Chapter 17 Solutions
Welding: Principles and Applications (MindTap Course List)
Ch. 17 - What effect does torch angle have on the shielding...Ch. 17 - Why must the end of the filler rod be kept in the...Ch. 17 - What can cause tungsten contamination?Ch. 17 - What determines the correct current setting for a...Ch. 17 - What is the lowest acceptable amperage setting for...Ch. 17 - List the factors that affect the gas flow setting...Ch. 17 - When should the minimum gas flow rates be...Ch. 17 - What is the minimum gas flow rate for a nozzle...Ch. 17 - What is the maximum gas flow rate for a nozzle...Ch. 17 - Which incorrect welding parameters does stainless...
Ch. 17 - Using Table 17-4, determine the approximate...Ch. 17 - Using Table 17-3, Table 17-5, and Table 17-6, list...Ch. 17 - Why is it possible to control a large aluminum...Ch. 17 - What may happen to the end of the aluminum welding...Ch. 17 - What should be done if someone comes in contact...Ch. 17 - Using Table 17-7, determine the suggested setting...Ch. 17 - What can be done to limit oxide formation on...Ch. 17 - How should the filler metal be added to the molten...Ch. 17 - How can the rod be freed if it sticks to the...Ch. 17 - How is an outside corner joint assembled?Ch. 17 - What must be done with the weld craters when back...Ch. 17 - What can prevent both sides of a stainless steel...Ch. 17 - How is the filler metal added for a 3F weld?Ch. 17 - What can cause undercutting on a 3F tee joint?Ch. 17 - What helps hold the weld in place on a 2F lap...Ch. 17 - What helps hold the weld in place on a 4G weld?
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- : +0 العنوان use only Two rods fins) having same dimensions, one made orass (k = 85 Wm K) and the mer of copper (k = 375 W/m K), having of their ends inserted into a furna. At a section 10.5 cm a way from furnace, the temperature of brass rod 120 Find the distance at which the ame temperature would be reached in the per rod ? both ends are ex osed to the same environment. ns 2.05 ۲/۱ ostrararrow_forwardFor the beam show below, draw A.F.D, S.F.D, B.M.D 6 kN/m 1 M B. 3 M Marrow_forward1. Two long rods of the same diameter-one made of brass (k=85w/m.k) and the other made of copper (k=375 w/m.k) have one of their ends inserted into a furnace (as shown in the following figure). Both rods are exposed to the same environment. At a distance of 105 mm from the furnace, the temperature of the brass rod is 120°C. At what distance from the furnace will the same temperature be reached in the copper rod? Furnace 105 mm T₁ Brass rod ⑪ h Too- x2- Ti Copper rodarrow_forward
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