Stainless steel seamless elbows are pipe fittings used in pipe bends, so they are called elbows. The material and wall thickness of the stainless steel seamless elbow are not the same, so there are differences in the forming process. Let’s understand the forming method of the stainless steel seamless elbow.
1. Forging method
The pipe end or part is punched and stretched with a swaging machine to reduce the outer diameter. Commonly used swage forging machines are rotary, connecting rod, and roller.
2. Rolling method
Rolling usually does not use a mandrel. It is suitable for the inner round edge of thick-walled tubes. A core is placed in the tube, and the outer circumference is pushed by rollers for round edge processing.
3. Stamping method
That is, use a tapered core on the punching machine to expand the tube end to the required size and shape.
4. Bending
There are three commonly used methods for bending forming, one is the stretching method, the other is the stamping method, and the other is the roller method. There are 3-4 rollers, 2 fixed rollers, and 1 adjustment roller, which are used to adjust the distance between the fixed rollers. The finished pipe is bent.
Five, inflation method
1. Put rubber in the tube and compress it with a punch to make the tube protrude.
2. Hydraulic bulging forming, filling the middle of the tube with liquid, and the pressure of the liquid will bulge the tube into the desired shape.
The above is the introduction of the forming process of stainless steel seamless elbow.