The shape of the carbon steel large-diameter thick-walled oval head head surface can be divided into a convex shape, a tapered shape, a flat plate shape and a combined shape. A convex head refers to a head having a convex outer surface, such as a hemispherical shape, an elliptical shape, a dish shape, and a non-folded spherical head. Some cylinders use a convex-inward-facing combined bottom seal to ensure strength and meet the requirements of safe use. The mechanical properties of the elliptical head are second only to the hemisphere head, but superior to the dish head. Since the depth of the elliptical head is between the hemispherical shape and the dish-shaped head, the requirements and manufacturing difficulty of the stamping equipment and the mold are also between the two, that is, it is easier than the hemispherical head and more difficult than the dish-shaped head. In recent years, the use of a spinning manufacturing process has facilitated the manufacture of a large-diameter elliptical head. Elliptical heads are widely used in medium and low pressure vessels due to their better overall performance. Elliptical heads are widely used in petroleum, electronics, chemical, pharmaceutical, textile, food, machinery, construction, nuclear power, aerospace, military and so on.
Carbon steel large-diameter thick-walled oval heads are a component of a container that is joined to the barrel by welding. According to different geometric shapes, it can be divided into spherical, elliptical, dish, spherical crown, cone shell and flat cover, among which spherical, elliptical, dish, and spherical crowns are collectively referred to as convex heads. . In the welding, it is divided into a butt welding head and a socket welding head. The head is welded to the pipe end or to the external thread of the pipe end to cover the pipe fitting. Used to close the pipeline and function the same as the pipe plug. The form of the blind plate is similar, except that the blind plate is detachable and the welded cap is not removable. The cap includes a convex cap, a conical shell, a variable diameter section, a flat cap, and a constricted opening.
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