Non-standard equipment flange design calculation questions T_T
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As shown in the picture, in a small company, the leader demands to save money, save money, and save money! You are required to design the container flange yourself. By adjusting the three values marked in the picture, ensure that the nuts and washers can fit, and ensure that the calculation is qualified. Then... as shown in the picture, the straight side of the flange root is 32mm long, 25mm thick, and the butt cylinder is 16mm. The solution for the butt weld between the flange and the cylinder is NBT47020, 6.5.1, Figure 2, direct surfacing transition. It feels so random, and I don’t feel confident at all. Tell us what you think :'(
What method does the author plan to use to design this non-standard flange? sw6 or finite element
This post was last edited by fzujunru on 2018-12-31 19:47 If the thickness of the small end of the flange neck is calculated as 16, there is no problem, because the thickness difference between 25 and 16 is 9, and 32 is greater than 9X3=27 If the thickness of the small end of the flange neck is calculated as 25, then you need to regard 25 as the thickness of the large end and 16 as the thickness of the small end. Determine h according to Figure 7-7 of GB/T150.3. Ensure that f=1, so that the length of the straight edge segment (that is, the 32 in your picture) is not less than h. This is safer, otherwise the stress on the circumferential weld between the flange and the cylinder will be greater, which is a hidden danger.
:victory: Thank you, I will study it at work tomorrow. Happy New Year hahaha
This post was last written by gn_1984 edited on 2019-1-4 14:50 The dimensions shown by the original poster obviously do not conform to the e-picture, and should be able to follow the f-picture. The minimum requirement for structural size should still meet GB150.
Thank you. I didn’t pay attention before. It turns out that the length of the straight edge is also regulated: victory: