Plates designated for cylindrical pressure vessels have their edges typically beveled at an 80° angle for_________________?
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Answer: D. fullering and caulking
Explanation
Beveling plate edges at an angle forms a specific V-shaped groove for welding preparation. This specialized edge preparation allows heavy caulking and fullering tools to compress metal tightly. Forcing the metal edge against the adjacent plate creates a strong mechanical seal against leaks. Fullering involves using a blunt tool to hammer the edge of a plate into a joint. Caulking uses a pneumatic chisel to force metal tightly into crevices to achieve pressure tightness. Historically utilized before modern welding, these mechanical sealing techniques required specific plate edge geometries.
Pressure vessel fabrication demanded reliable leak-proof joints long before advanced electric arc welding existed. Beveled edges provided the exact metal volume needed for effective historical caulking and fullering operations. Modern fabrication standards have largely replaced caulking with full penetration welding for cylindrical vessels. Reducing stress concentration is achieved through smooth geometric transitions rather than sharp edge beveling. Ease of manufacture is secondary to achieving a leak-tight seal in high-pressure cylindrical vessels. Safety is a general design goal rather than the specific mechanical purpose of an 80-degree edge bevel.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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