Carbon steel elbow production process

Carbon steel elbow production process  

The basic process of carbon steel elbow is: first welding a polygonal polygonal polygonal ring shell or closed at both ends of the polygonal fan shell, the internal pressure is filled with pressure medium, the internal pressure under the action of the cross section from polygon gradually become a circle, and finally become a circular ring shell.  One round shell can be cut into 4 90° elbows or 6 60° elbows or other elbows as required. This process is suitable for manufacturing any large elbows with the ratio of middle diameter to inner diameter of elbows greater than 1.5 times. It is an ideal method for manufacturing large carbon steel elbows at present.  

Seamless elbow: Elbow is a pipe fitting used for bending.  For different materials or wall thickness of the elbow, generally choose different forming technology.  The forming process of seamless elbow commonly used by manufacturers includes hot pressing, stamping, extrusion, etc., which accounts for a large proportion of all pipe fittings used in the pipeline system, accounting for about 80%.  

Hot push forming process: hot push elbow forming process is the use of special elbow push machine, core die and heating device, so that the mold billet under the push rod to move forward and heated process, in expansion and bending.  The tube blank diameter is smaller than the elbow diameter.  The deformation process of the blank is controlled by the mandrel. The deformation characteristic of the hot push elbow is to determine the diameter of the blank according to the law that the volume of the metal material remains unchanged before and after plastic deformation.  The metal flow compressed at the inner arc is compensated to the other parts that are thinned by the enlargement, thus obtaining an elbow with uniform wall thickness.  Therefore, it has become the main forming method of carbon steel, alloy steel elbow, also suitable for large-scale production.  The heating methods of forming process include medium frequency or high frequency induction heating, flame heating and reflector heating.  

Stamping forming process: stamping forming elbow is a forming process of batch production of carbon steel elbow.  Stamping elbows are divided into cold stamping and hot stamping.  In the production of ordinary elbow, it is replaced by thermal push or other forming process.  The forming process of cold extrusion elbow is to use the common bending machine to put the tube blank into the outer die. After the upper die and the lower die are closed, the blank moves along the gap between the inner and outer die to complete the forming process.  

The company mainly produces carbon steel elbow pipe fittings, through the above introduction of carbon steel elbow pipe fittings products, if you do not understand our company welcome to inquire!