The correct method of expanding a generating...

Question 1 / 270705eccefa0bacbc34ba4d46ca3

Question 1 of 270705eccefa0bacbc34ba4d46ca3

The correct method of expanding a generating tube at the boiler drum tube sheet is to roll __________.

Question 1 of 27070

The correct method of expanding a generating tube at the boiler drum tube sheet is to roll __________.

🔍 Key Concepts

• Purpose of tube rolling in a boiler drum tube sheet (what does rolling actually do to the tube and the sheet?) • Relationship between rolling depth and the thickness of the drum tube sheet • How over-rolling vs. under-rolling affects tube strength, sealing, and risk of damage to the sheet

💭 Think About

• Think about what you want the joint to do before welding: create a tight mechanical seal without thinning or cutting the tube excessively. • If you roll too shallow or too deep relative to the sheet thickness, what could happen to the metal at the point of highest stress? • Which choice best balances getting a good seal and support while avoiding distortion or cracking of the tube sheet or tube?:

✅ Before You Answer

• Compare how each option affects the stress concentration in the tube and tube sheet. • Ask: Would this method risk weakening the tube or enlarging the tube hole in the drum tube sheet? • Verify which approach is most consistent with standard boiler practice to prevent leaks and maintain tube support.

Question 1 of 27070

The correct method of expanding a generating tube at the boiler drum tube sheet is to roll __________.

slightly at the tube end prior to welding the tube to the drum tube sheet

heavily at the tube end prior to welding the tube to the drum tube sheet

to a depth less than the thickness of the drum tube sheet

to a depth greater than the thickness of the drum tube sheet

Question 1 / 270705eccefa0bacbc34ba4d46ca3

Question 1 of 270705eccefa0bacbc34ba4d46ca3

The correct method of expanding a generating tube at the boiler drum tube sheet is to roll __________.

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Question 1 of 27070

The correct method of expanding a generating tube at the boiler drum tube sheet is to roll __________.