Welding: Principles and Applications (MindTap Course List)
8th Edition
ISBN: 9781305494695
Author: Larry Jeffus
Publisher: Cengage Learning
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Textbook Question
Chapter 5, Problem 4R
Describe the differences between pipe and tubing.
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Q4/ A compressor is driven motor by mean of a flat belt of thickness 10 mm and a width of
250 mm. The motor pulley is 300 mm diameter and run at 900 rpm and the compressor
pulley is 1500 mm diameter. The shaft center distance is 1.5 m. The angle of contact of
the smaller pulley is 220° and on the larger pulley is 270°. The coefficient of friction
between the belt and the small pulley is 0.3, and between the belt and the large pulley is
0.25. The maximum allowable belt stress is 2 MPa and the belt density is 970 kg/m³.
(a) What is the power capacity of the drive and (b) If the small pulley replaced by
V-grooved pulley of diameter 300 mm, grooved angle of 34° and the coefficient of
friction between belt and grooved pulley is 0.35. What will be the power capacity in this
case, assuming that the diameter of the large pulley remain the same of 1500 mm.
You are tasked with designing a power drive system to transmit power between a motor and a conveyor belt in a manufacturing facility as illustrated in figure.
The design must ensure efficient power transmission, reliability, and safety. Given the following specifications and constraints, design drive system for this application:
Specifications:
Motor Power: The electric motor provides 10 kW of power at 1,500 RPM.
Output Speed: The output shaft should rotate at 150 rpm.
Design Decisions:
Transmission ratio: Determine the necessary drive ratio for the system.
Shaft Diameter: Design the shafts for both the motor and the conveyor end.
Material Selection: Choose appropriate materials for the gears, shafts.
Bearings: Select suitable rolling element bearings.
Constraints:
Space Limitation:
The available space for the gear drive system is limited to a 1-meter-long section.
Attribute 4 of CEP
Depth of knowledge required
Fundamentals-based, first principles analytical approach…
Chapter 5 Solutions
Welding: Principles and Applications (MindTap Course List)
Ch. 5 - List some applications that use low-pressure...Ch. 5 - List some applications that use medium-pressure...Ch. 5 - List some applications that use high-pressure...Ch. 5 - Describe the differences between pipe and tubing.Ch. 5 - What are the advantages of welded piping systems...Ch. 5 - Why must the ends of pipe be beveled before being...Ch. 5 - How can the ends of a pipe be beveled?Ch. 5 - Why is the end of a pipe beveled at a 371/2 angle?Ch. 5 - What causes root suck-back or a concave root face?Ch. 5 - Why are arc strikes outside the welding zone...
Ch. 5 - What are the purposes of backing rings?Ch. 5 - What is the purpose of a hot pass?Ch. 5 - Why must the weld crater be cleaned before...Ch. 5 - What is the maximum width of the cover pass? Why?Ch. 5 - When is the 1G welding position used?Ch. 5 - What can make welding in the 2G vertical fixed...Ch. 5 - What supports the welds on a 2G pipe joint?Ch. 5 - On 5G welds, what usually determines the direction...Ch. 5 - What angle is the pipe at in the 6G position?Ch. 5 - In addition to continuously changing the weld...
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