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The technological iteration of the interactive double-mandrel cold drawing machine helps improve the quality and efficiency of precision pipe processing
Mar 31,2026
In the field of seamless pipe and precision bar processing, cold drawing technology has become the core process for the production of high-end metal profiles, thanks to its advantages of chipless processing, precise dimensions and high surface finish. As a new generation of precision cold drawing equipment, the interactive double-core bar cold drawing machine has broken through the technical limitations of traditional single-core bar cold drawing equipment. With the technical advantages of bidirectional coordination, precise controllability and wide adaptability, it is widely used in the fine processing of stainless steel tubes, alloy tubes and precision bars, promoting the upgrading of the tube processing industry towards high precision, high efficiency and low loss.
Traditional cold drawing equipment mostly adopts a single-core rod structure. During the cold drawing process of tubes, problems such as uneven tube wall thickness, large inner diameter deviation, and insufficient straightness of profiles are prone to occur. Moreover, the difficulty of single processing and forming is high, requiring repeated drawing multiple times. This not only leads to low production efficiency but also causes raw material loss. It is difficult to meet the high-precision pipe material demands in fields such as aerospace, oil and gas transportation, and new energy equipment. The interactive double-mandrod cold drawing machine innovatively adopts a double-mandrod collaborative working structure. Through the dynamic interactive positioning of the front and rear double-mandrods, it realizes the synchronous shaping of the inner and outer walls of the pipe, fundamentally solving the industry pain point of insufficient processing accuracy of traditional equipment.
The core advantage of this equipment lies in its dynamic adaptive collaborative control system. The dual mandrels can adjust the positioning spacing and support strength in real time according to the pipe specifications, material hardness and drawing speed, completing the precise plastic deformation of the metal billet at room temperature and effectively optimizing the inner diameter, wall thickness and roundness parameters of the pipe. Compared with traditional equipment, the dimensional deviation of the processed pipes can be controlled at the micrometer level, the uniformity of the pipe wall is greatly improved, and the surface finish can reach the standard of high-end products without secondary grinding. Meanwhile, relying on the cold working hardening process, the equipment can enhance the hardness and tensile strength of the pipe without additional heat treatment, significantly optimizing the mechanical properties of the profiles.
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