Flanging process
The operation after the dish shape is to shape the edges, which will weld the dish end to the tank body to support internal pressure. During the folding operation, the edge of the board is formed by the folding roller, which moves relative to the radius of the forming roller. Two rollers rotate and bend the material with the required radius. This operation may result in board lamination. The best quality machine should be powerful enough to perform flanging with the least number of passes, thus minimizing the thinning of the disc-shaped end.
Minimizing thinning is one of the biggest challenges faced by flanging operators, as there are very strict tolerances for the disc-shaped end, especially when there is high pressure inside the tank. Reducing the thickness of sheet metal means higher production profits for manufacturers, as they do not need to use thicker sheets to ensure minimum thickness.
To reduce lamination, it is important to have a machine with the correct geometric shape, sufficient rotational power, and good control over the movement of the flanging roller. Modern machines should be equipped with pressure control devices to assist operators by preventing the squeezing of plates. With efficient gap control CNC, this type of machine can even allow inexperienced operators to perform flanging with the least number of passes.
A good flanging machine should also have a control device that always allows optimal contact between the rolling mill and the sheet metal. This includes the ability to tilt the flange and shape the roller. Electric and hydraulic devices are the difference between high-quality and low-quality flanging machines. The hydraulic unit must allow for proportional and synchronous movement; For example, it is very important to quickly move the bracket that fixes the disc-shaped end to the rest of the shaft.
The disc-shaped end can be flanged with or without a central hole. Based on this, the flanging machine can have different configurations: with or without a closed structure. A disc-shaped end flanging machine without a central hole has a closed structure that allows two clamping cylinders to block the disc. In order to ensure smooth movement of the small cars of these flanging machines, regardless of the clamping force, they must be equipped with the latest generation of frictionless technology, including ball guides for small car movement and ball screw positioning for precise movement.
Once a disc-shaped end is formed, the manufacturer must match the tolerances for circumference and depth. The flanging machine can be equipped with a processing arm to chamfer the edges of the sheet and adjust the height of the disc-shaped end. The most advanced machines have a precise system to measure the circumference of the disc-shaped end, making it easier for operators to provide perfect products.
Disc and flanging machines are machines with many important technical aspects and should be appropriately evaluated. Choosing the right machine can determine the success or failure of a business.
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