Pipe processing method

Pipe processing is an organic combination of machining and metal pressure processing. Many are also in the category of machining, and the most used are stamping, forging, roller processing, rolling, bulging, stretching, bending, and combination processing.

The examples are as follows:

Bending forming method: There are three methods that are more commonly used. One method is called stretching method, the other method is called stamping method, and the third one is the roller method which is familiar to everyone. There are 3-4 rollers, two fixed rollers, one adjustment. Roller, adjust the fixed roll distance, the finished pipe is bent. This method is widely used, and if the spiral tube is produced, the curvature can be increased.

Bulging method: one is to place rubber in the tube, and the upper part is compressed by a punch to make the tube convexly formed; the other method is to form a hydraulic bulge, fill the middle of the tube with liquid, and drum the tube into the desired shape by liquid pressure. Most of the production of bellows like ours is used in this way.

Forging method: The end or part of the pipe is punched out by a swaging machine to reduce the outer diameter. The common forging machine has a rotary type, a link type and a roller type.

Stamping: The tube ends are expanded to the required size and shape with a tapered core on the press.

Roller method: The core is placed in the tube, and the outer circumference is pressed by a roller for round edge processing.

Rolling method: Generally, the mandrel is not used, and it is suitable for the inner edge of the thick-walled tube.