Seamless elbow: Elbow is a pipe fitting used at bends in pipes. In the pipeline system used in all pipe fittings, accounted for the largest proportion of about 80%. Usually, different forming processes are selected for elbows of different materials or wall thickness. Manufacturers commonly used seamless elbow forming process has hot push, stamping, extrusion
Push hot forming:
Hot push elbow forming process is the use of special elbow push machine, core die and heating device, so that the billet set on the mold in the push of the machine to move forward, in the movement of heating, expanding and bending forming process. Hot push bend deformation characteristics are based on volume before and after plastic deformation rule of metal materials determine the pipe diameter, pipe diameter bend diameter, through the core module and control the deformation of the process, make the inner arc compressed metal flow, the compensation to other parts of the thinned by hole diameter, wall thickness uniform Angle is obtained.
Stamping forming:
Stamping elbow is the earliest forming technology used in mass production of seamless elbow. At present, it has been replaced by hot push method or other forming technology in the production of common specifications of elbow. However, in some specifications of elbow, the production quantity is small, the wall thickness is too thick or too thin.
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