The pushing process of pipe elbow
Pipe elbow is a kind of pipe fittings which mainly used to connect two pipes.Pipe elbow can change the liquid or gas flowing direction in the piping system.According to the curvature radius of elbow,it can be divided into LR(long radius) elbow and SR(short radius) elbow.The elbows include 45 degrees,90 degrees and 180 degrees.Pushing elbow is made by push technology,and push process is the most important production process of pipe elbow molding.Pushing elbow forming process has the characteristics of beautiful appearance,uniform wall thickness and continuous operation,and is suitable for mass production.
There is the pushing process of pipe elbows:
First,the material is hot pushed, the pusher is a horn-shaped core or mandrel,the core rod is thickened and thickened,and the process of pushing the elbow is a process of expanding the diameter of the belt,and there is support at the back.The material pipe section penetrates the mandrel,and there is a archway frame at the back to fix the mandrel.There is a small car in the middle.Some of the cars are driven by hydraulic pressure, some are driven by mechanical transmission,that is,screw drive,and then the trolley is pushed forward, and the trolley pushes the pipe along the core.The stick goes forward,there is an induction coil outside the mandrel,the tube is heated and heated, and then the trolley pushes the tube down and processes one.
Second,the finishing process,after shot peening,removes the scale of the inner and outer surfaces of the elbow,and treats both ends with a groove to facilitate welding.
Third,we must first select the specifications,and propose the pipe material,for example,a 90-degree elbow.Through its curvature,it can be calculated that the long material can be machined with a 90° elbow,and then cut with the length as the fixed length.
Fourth,after the push,the elbow should be shaped in this hot state,because some elbows will be distorted after improper handling,which is not allowed.In addition,after the head is pushed, the outer diameter of the front end is generally large,and it is shaped by a shaping die.The shaping die is actually a press.It must have a set of molds,two semi-circular arcs, one on each side.The outer diameter after shaping is up to the size of the finished product.
Haihao Group manufacture high quality pipe elbows,which contain:45/90/180 degree elbow and elbow in any degree,long/short/customised radius elbow etc.The elbow we can produce size is 1/2inch-48inch.We can produce according the elbow to standards:AMSE/ANSI B16.9,ASME/ANSI B16.28,AMSE/ANSI B16.11,BS 4504,DIN,EN 10253-2,ISO 3419,JIS,GOST 17375,MSS SP-75,MSS SP-43 etc.The products materials can be carbon steel,stainless steel and alloy steel.If you need elbows,please feel free to contact us:email@example.com