GB elbow manufacturing and use process

GB elbow manufacturing and use process

Hebei national standard elbow manufacturers mainly produce a variety of different materials and models of national standard elbow, national standard elbow is mainly used for the bend in the process of pipe installation, type pipe in the installation process to do 45 degrees.90 degrees.180 degrees in the installation of commonly used Angle, according to customer needs to produce 60 degrees and other angles of the national standard elbow.GB elbow material is divided into: stainless steel, alloy steel, carbon steel and other colored books and plastics.GB elbow and pipe understanding of the way, direct welding, flange connection and other commonly used connection.

The basic process of GB elbow is: first of all, a polygonal annular shell or polygonal fan-shaped shell closed at both ends is welded. After the internal pressure is filled with pressure media, internal pressure is applied. Under the action of internal pressure, the cross-section gradually becomes a circle from the polygon and finally becomes a circular annular shell.According to the need, a circular annular shell can be cut into 4 90° elbows or 6 60° elbows or other specifications of the elbow, the process is suitable for making the middle diameter of the elbow and the inner diameter of the elbow ratio is more than 1.5 times of any specification of large elbow, is an ideal way to manufacture large carbon steel elbow.

GB elbow: GB elbow is a kind of pipe fitting used for pipe turning.In the whole pipe fittings used in the pipeline system, it accounts for a large proportion, about 80%.Usually, different forming processes are selected for elbow of different materials or wall thickness.Manufacturer commonly used seamless elbow forming process are hot push, stamping, extrusion and so on.

Hot push forming: hot push elbow forming process is the use of commonly used elbow pushing machine, core die and heating device, so that the billet on the mold under the push of the machine to move forward, in the movement is heated, expanded 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.

Hot push elbow forming