Bundle: Welding: Principles and Applications, 8th + MindTap Welding, 4 terms (24 months) Printed Access Card
8th Edition
ISBN: 9781337219426
Author: Larry Jeffus
Publisher: Cengage Learning
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Textbook Question
Chapter 18, Problem 1R
What types of industries require GTAW-quality pipe welds?
Expert Solution & Answer
To determine
Types of industries require gas tungsten arc welding quality pipe welds.
Explanation of Solution
Gas tungsten arc welding (GTA) for pipe is used where joint has high degree of integrity. Integrity of weld is the type of weld which is strong and defect free. Many industries are using these types of joints in pipe. Some of industries name are given as follows:
- Oil industry.
- Gas industry.
- Nuclear industry.
- Chemical industry.
Gas tungsten arc welding gives the welding joint as industries needed. High skilled person required to this GTAW for pipe in industries.
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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 18 Solutions
Bundle: Welding: Principles and Applications, 8th + MindTap Welding, 4 terms (24 months) Printed Access Card
Ch. 18 - What types of industries require GTAW-quality pipe...Ch. 18 - What are the grooves most often used for welding...Ch. 18 - What condition must the prepared edges of a pipe...Ch. 18 - How is the depth of root penetration measured?Ch. 18 - What problem can incomplete fusion cause?Ch. 18 - What are the common causes of a concave root...Ch. 18 - What problems can excessive root reinforcement...Ch. 18 - Prob. 8RCh. 18 - What gases are used as backing gases?Ch. 18 - How long would it take to purge a 15-ft section of...
Ch. 18 - How long would it take to purge a 10-mm section of...Ch. 18 - How can filler metal be added to make a root pass?Ch. 18 - Prob. 13RCh. 18 - How is the tack weld ended so that it will not...Ch. 18 - What is the 1G pipe position?Ch. 18 - After the weld is set up and ready to begin, how...Ch. 18 - What type of weld can be made using the nozzle...Ch. 18 - What two problems can be corrected by a hot pass?Ch. 18 - Why must you brace yourself when making a weld?Ch. 18 - What can happen to the weld pool if the torch...Ch. 18 - What technique should be used when stopping a...Ch. 18 - What is the maximum width that a weave pattern...Ch. 18 - Why should the filler pass penetration be limited...Ch. 18 - How much filler metal should be added to a filler...Ch. 18 - What is the 5G pipe position?Ch. 18 - How should the torch be held to allow good...Ch. 18 - Why are stringer beads in the 6G position kept...
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