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Tube mill machines convert flat strips into precision tubes through a continuous forming and welding process. At Shijiazhuang Faith Machinery Co., Ltd., the tube mill’s design focuses on mechanical rigidity and modularity. The base frame, typically constructed from welded steel beams, provides a robust foundation that resists deflection under heavy roll loads.
On top of this frame, a series of forming modules progress the material from flat to cylindrical. Each module contains upper and lower roller sets mounted on adjustable stands. These stands feature hardened guide plates and bushings to ensure precise roll alignment, vital for maintaining wall thickness uniformity and outer diameter tolerance.
The forming section’s geometry is engineered to minimize stress concentration during bending. Smooth transitions between roll stands reduce the risk of strip edge damage, while tapered guide plates facilitate gentle entry and exit.
Shijiazhuang Faith’s engineers conduct finite element analysis (FEA) during the design phase to optimize roll diameters, spacing, and support stiffness for different strip widths and thicknesses. In addition, the machine’s modular structure allows new stands to be added or removed easily, accommodating future expansions or product range changes without extensive retrofitting.
Power transmission relies on high-torque gearboxes and couplings that deliver consistent rotational force to each forming roll. Twin-shaft or multi-shaft reducer configurations can be selected based on load requirements and desired speed. For rapid changeovers, quick-release couplings and motor position encoders enable precise reconnection without re-calibration.
The tube mill’s welding section typically follows the forming line, with edge-preheating coils and induction heads synchronized to the strip speed. Welding power supplies are mounted on vibration-damped platforms to ensure stable current delivery and prolong equipment life.
Auxiliary systems—coil car, coil car loading, pinch roll units, and exit conveyors—are integrated to streamline material flow and reduce manual intervention. These units are controlled via a centralized PLC, with Ethernet-based communication linking all components. This architecture supports remote diagnostics, parameter updates, and software upgrades.
By emphasizing structural integrity, flexible configuration, and precise power transmission, Shijiazhuang Faith’s tube mill machines deliver consistent, high-precision tube production suitable for a range of industrial applications.
