Carbon steel head introduces three influencing fac

Carbon steel head introduces three influencing factors

Carbon steel head manufacturers briefly introduce the three factors of the head is what: one is the influence of stiffness: carbon steel head under pressure at the same time itself should have a certain stiffness, so as not to deformation and damage. Therefore, it is stipulated that the lower limit thickness of carbon steel and low alloy steel containers excluding corrosion is not less than 3mm; Minimum thickness not less than 2mm for high alloy steel containers excluding corrosion.

The second is the effect of pressure load: carbon steel head is under certain pressure of pressure parts, the first is to meet the pressure load, whether it is under internal pressure or the head of external pressure load can be obtained through the related calculation formula of calculation the thickness of head, among them, the calculated thickness + corrosion allowance = design thickness, the thickness of this design is single head from the pressure load into consideration and the thickness of the need.

The third is the influence of internal pressure instability: under the action of internal pressure, circumferential compression stress can be seen from the stress distribution at the bottom edge of the head, where the head is prone to circumferential instability. In order to prevent the stability of the elliptical head under internal pressure, it is stipulated that the effective thickness of the oval head with Di/ 2HI ≤2 should not be less than 0.15% of the inner diameter of the head, and the effective thickness of the oval head with Di/ 2HI > 2 should not be less than 0.30% of the inner diameter of the head. Although the above limit is the effective thickness, it is also indirectly limit the lower limit thickness of head forming. The above is a simple introduction to the three influencing factors of carbon steel head thickness, if you do not understand timely consult us!