Low-cost supply Wuxi head 135-811-44625

Head head advantage by half ellipsoidal and short cylinder of straight edge segments action is to avoid the connection weld head and cylinder appears mutated to a radius of curvature to improve the situation by force welds . Since the head of the ellipsoid part warp curvature changes smoothly and continuously, so the stress is more evenly distributed, and the oval-shaped head much less depth than the domed, easy to press molding, is one of the more head currently used low-pressure vessel . butterfly head as a continuous surface, at the junction of three parts, the radius of curvature of the warp mutations, due to changes in the curvature, therefore there is bending stress. Bending stress and tensile stress superposition result, the stress this part protruding from the rest. Compared with the oval-shaped head, not as good as their uniform stress distribution, but the processing than likely, therefore use in engineering is not ideal. But when the oval-shaped head of the mold is difficult, then replaced with a dished head. Butterfly head, also known as a spherical head with a folding. Consists of a sphere, a cylinder of a straight edge height and radius of curvature of connecting these two portions is substantially less than the radius of the spherical part of the composition of the transition. The main advantage of the butterfly head as follows: (1) if the device has been specified shape total length, then use the increased capacity by 10% dished head than with standard elliptical head when. (2), due to a 10% dished head surface ratio of 2: 1 elliptical flat surface, so easy in the head with mounting plate and bracket, etc., and high efficiency. (3), due to the processing of 10% of the head dished head than standard oval seal is small, so forming good quality and beautiful appearance 10% of the production of large-diameter thin-walled dished head. (4) butterfly head if it is the same inner diameter of the same thickness of the head, 10% smaller than the standard oval dish-shaped head of the sizes of materials, material savings