Good performance of elbow

Stamping elbows are an important tube fitting in elbow fittings and are used in certain ways and fields, in accordance with good use and standards. The technical information on the production of stamping elbows hopes that users will pay more attention to this. The basic technology of stamping elbow forming is to first weld a polygonal ring shell with a polygonal cross section or a multi-edge fan shell closed at both ends. After the internal pressure is filled with pressure medium, internal pressure is applied, and the cross section is polygonal by internal pressure. Gradually turned into a circle, eventually becoming a circular ring shell. The punching elbow has good performance advantages in use, and its advantages are mainly reflected in the following aspects:

a) Stamping elbows are suitable for pipeline systems in the petroleum, natural gas, chemical, hydropower, construction and boiler industries.

b) No need to use the blank as raw material, which can save the cost of pipe making equipment and mold, and can obtain the elbow punching elbow of any large diameter and relatively thin wall thickness.

c) The blank is a flat plate or a developable curved surface, so the material is simple to cut, the precision is easy to ensure, and the assembly and welding are convenient.

c) The manufacturing cycle can be shortened and the production cost is greatly reduced. Because it does not require any special equipment, it is especially suitable for processing large punching elbows on site.

Because the elbow has good comprehensive performance, it is widely used in chemical engineering, construction, water supply, drainage, petroleum, light and heavy industry, refrigeration, sanitation, plumbing, fire protection, electric power, aerospace, shipbuilding and other basic projects.

It is required to control the radius of curvature of the elbow. For example, if the radius is 1.5D, the radius of curvature must be within the required tolerance. Since most of these pipes are used for welding, in order to improve the quality of the welding, the ends are all turned into bevels, leaving a certain angle with a certain edge. This requirement is also stricter, how thick the edges are, what the angle is and the range of deviation. There are provisions, the geometry is much more than the pipe fittings. The surface quality and mechanical properties of the elbow are basically the same as the tube. For the convenience of welding, the material of the steel of the pipe to be connected is the same.