I have a question: How is the roundness deviation of pressure vessels subjected to internal pressure measured? What tools are used, and what are the specific procedures?
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I’ve been working on drafting corporate standards recently, and it relates to the issue of roundness deviation in pressure vessels. I wonder how riveters measure this; my supervisor mentioned that calipers, laser rangefinders, and measuring rods are used for such purposes. I’ve never used any of these tools before. Does anyone know more about them? Could you share some detailed information?
With a template for measuring the cylinder diameter, and by measuring the difference between the maximum and minimum diameters, it’s possible to determine the roundness
Generally, the difference between the maximum and minimum diameters is measured; a tape measure is used for this, while there are standards available for measuring angles
It’s all too general – how do I tilt it, and what tools should I use?
A telescopic (sliding-rod) ruler can provide more accurate measurements
Generally, templates and a tape measure are used. The template is used more often.