most of the use requirements of stainless steel hemispheres are to maintain the original appearance of buildings for a long time. When determining the type of stainless steel to be selected for stainless steel heads, the main considerations are the required aesthetic standards, the corrosiveness of the local atmosphere and the cleaning system to be adopted. However, other applications are increasingly seeking structural integrity or impermeability. For example, roofs and side walls of industrial buildings. In these applications, the construction cost of the owner may be more important than aesthetics, and the surface may not be very clean. Using a conical head, since its shape is a cone, the film stress occurs at the large end of its main body under the action of internal pressure. At the joint of the cone and the cylinder part, due to geometric discontinuity and sudden change of curvature radius, a large lateral thrust will be generated at the joint, causing a large edge stress and easy bending, which needs to be strengthened.
stainless steel hemispheric crown head is a part of the spherical surface directly connected with the cylinder. Because of its simple structure and convenient manufacture, it is commonly used as the Middle Head of two independent pressure chambers in the container, it can also be used as an end cap. Since there is no corner transition at the joint between the spherical surface and the cylinder, there is considerable discontinuous stress on the head and cylinder near the joint, and the stress distribution is not reasonable. Spherical crown head is often used for intermediate head. Some pressure vessels separate the whole cylinder into independent pressure chambers in order to save the occupied area of the plane and facilitate the arrangement of process flow. The design is simple in structure and good in stress.
The classification of stainless steel hemispherical head should be a very important finished product now, especially in the classification of some heavy industries, which are widely used in heavy industries such as boilers, chemical industry and solar energy industry, the development of the head can be said to play an important role in these industries. However, at present, China's industrial development is not very balanced, often showing a multi-point and multi-piece situation. That is to say, the development of this kind of industry is continuous on the geographical level. This kind of continuity can have a good impact, or it may bring harsh competition to our enterprises.
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