Is it feasible to use lock-bottom butt welding between the large flange of the equipment and the cylinder?
Thread Content
When examining the external drawings (the diagram above shows the dimensions of the two types of equipment), it was found that the welding of the equipment’s large flange to the cylinder body followed the lock-bottom butt welding pattern used in flat cover welding; the equipment’s large flange and the flange cover were connected using blind hole bolts. The design pressure and temperature of the equipment are 2 MPa and 150°C. The original document has been processed for certification and stamped! I would like to ask how to calculate such large flanges and flange covers for welding? Is there any calculation model that can be used as a reference? Since the flanged flange is a structural element on the head, calculation seems not feasible.
Bottom lock butt welding is a viable method for connecting large flanges to the cylinder; this welding technique provides strong joint strength and good sealing properties, making it suitable for applications under high pressure and high temperature conditions. However, the specific feasibility still requires consideration of factors such as materials, thickness, and operating conditions. It is recommended to conduct a detailed engineering analysis and design evaluation. .
Yes, but the flange needs to be calculated as a reverse flange
It’s okay with the reverse flange, but there’s a lack of a transition section, which is a bit concerning.