Dish-shaped head is also known as a hem-shaped spherical head, it consists of a spherical surface, a straight side of a cylinder of a certain height, and a transition portion connecting the above two portions with a radius of curvature smaller than the radius of the spherical surface. The dish-shaped head is a continuous curved surface. At the three-part joint, the curvature radius of the warp is abrupt, and there is a bending stress due to the curvature change. The result of the superposition of bending stress and tensile stress causes the stress of this part to protrude from other parts.
Dish Head/Eliptical Head /Hemispherical Head/Conical Head /Flat Bottom Head/Special Shape Head