Automated processes guarantee more consistent results for production runs that need to have identically shaped outputs from start to finish. Specialty processes, such as split dies, can be customized to provide bends with an angle greater than 180°. Rotary draw bending can handle machining with tight CLR ratios, or bends with sharp angles. Mandrels are inserts that stop tubes from crimping, wrinkling, or ovalizing during the bending process to preserve the integrity of the interior shape. Other advantages of rotary draw bending include: This tube bending process can handle more complex designs and facilitates automated machining. The die uses CNC equipment to press itself against the tubing and then rotate the material into the required shape. Unlike the stationary die used in compression bending, the rotary draw bending die moves to facilitate the bending process. It also has a relatively high labor cost on low-volume production runs, where the process will most likely be conducted manually.
However, it can’t be used for complex CNC designs or designs that require mandrels. Compression bending is faster and has a lower per-unit tooling cost than many other tube bending methods. In this technique, machinery bends tubing around a stationary bending die. G&J Steel & Tubing offers the following services. There are many types of tube bending methods for different materials, environments, and designs. Most bending takes the form of elbow bends at different degrees or U-bends. Tube bending uses metal-forming techniques to bend the material into precise layouts and shapes without crimping or weakening the metal.
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