Nominal thickness of the equipment
Thread Content
Regarding the nominal thickness of the equipment cylinder, when I was studying equipment calculations, I would first use formulas to determine the calculated thickness, and then add the negative thickness deviation along with the corrosion allowance. However, by looking at some calculation documents, I found that the nominal thickness is given first, and verification is carried out thereafter. I would like to ask how this nominal thickness is determined.
What was mentioned earlier is the design calculation, while what is presented first here is the verification calculation. In other words, it’s not known in advance how thick the front part needs to be; the value is determined through calculation, while for the back part the result is given first to see whether it is feasible.
The nominal thickness is the thickness indicated on the equipment drawings. LZ is easy to understand; the calculations are not difficult
Hehe, according to c_m_1979, the nominal thickness in the standards should be the nominal minimum thickness. ;P
Hehe, “Wen Bing,” you’re being unreasonable again. When did I say that \"the nominal thickness according to the standards should be the nominal minimum thickness\"? Ugh! Dizzy! :L
Definition of nominal thickness: It refers to the thickness obtained by adding the calculated thickness, the corrosion allowance, and the negative deviation of the steel thickness, and then rounding it up to the standard specification for that steel. The thickness calculated in the calculations may not correspond to the thickness of commonly used plates; for example, if the calculated nominal thickness is 7 mm while the commonly used plate thickness is 8 mm, then 8 mm must be entered for verification. Therefore, the result displayed first shows the nominal thickness.
Calculate the relationships between thickness, design thickness, nominal thickness, effective thickness, and blank thickness: 1) Calculated thickness: the thickness obtained through formula calculation. If necessary, the thickness required for other loads should also be taken into account ； 2) Design thickness: The sum of the calculated thickness and the corrosion allowance ； 3) Nominal thickness: The design thickness plus the negative deviation of the steel thickness, rounded up to the thickness of the standard steel specification. That is, the thickness indicated on the drawing. 4) Effective thickness: Nominal thickness minus corrosion allowance and negative deviation of steel thickness. 5) Blank thickness: The actual thickness of the steel material used.
I believe that the effective thickness of a stamped head is the nominal thickness minus the corrosion allowance, the negative deviation in steel thickness, and the thinning amount of the head
The nominal thickness is the thickness obtained by adding the design thickness to the negative deviation of the steel thickness, and then rounding it up to the standard thickness specified for the steel; this is the thickness indicated on the drawings.