1. The price of pipe fittings is divided into forging, stamping, roller, rolling, bending forming, expansion and other methods. Now several processing methods are introduced as follows:
2. Forging method: use a swaging machine to punch the end or part of the pipe to reduce the outer diameter. Common swaging machines include rotary, connecting rod and roller.
3. Stamping method: use a taper core on the punch to expand the pipe end to the required size and shape.
4. Bulging method: one is to place rubber in the pipe and compress it with a punch above to make the pipe protrude into shape; Another method is hydraulic bulging, which fills the middle of the pipe with liquid
The bulk pressure makes the pipe bulge into the required shape. This method is mostly used in the production of bellows
5. Bending forming method: there are three commonly used methods, one is called stretching method, the other is called stamping method, and the third is roller method, which has 3-4 rollers, two fixed rollers, and one
Adjust the roll, adjust the fixed roll distance, and the finished pipe fittings are bent.
6. Roller method: place the core in the tube and press the periphery with rollers for round edge processing.
7. Rolling method: generally without mandrel, it is suitable for the inner circle of thick wall pipe