Solving the problems encountered in the ball-passing test for furnace tubes with internal fins. Ah, experts!
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Questions: 1. What material should the balls be made of (the furnace tubes are high-alloy ones)? 2. How should the diameter of the balls be calculated? 3. What pressure is appropriate for blowing these balls, and what medium should be used for blowing? 4. If there is a blockage, how can one determine its location? Experts, please help!
Tube with internal fins shouldn’t be ball-passable, right?
It seems there’s a standard stating that it should be unobstructed; however, when calculating the ball diameter, the height of the internal fins needs to be taken into account