English Views: 0
The operational workflow of an ERW tube mill for carbon steel is a coordinated sequence of mechanical and electrical processes. Shijiazhuang Faith Machinery Co., Ltd builds these lines with a focus on operational logic, ease of maintenance, and adherence to safety protocols. A thorough understanding of this workflow is essential for efficient and safe production.
Operation begins with setting up the steel coil on the decoiler. The strip is then threaded through the various stations: the leveller, the butt-welder, the forming section, and past the welding unit. Once the lead end of the strip reaches the saw, the main drive is engaged, and the mill begins continuous operation. Key operational parameters that require monitoring and adjustment include the line speed, the HF weld power and frequency, the pressure of the squeeze rolls, and the cooling water flow rate. The mill operator uses the central control panel to oversee these variables and make necessary adjustments to maintain product quality.
Routine maintenance is a critical aspect of sustained operation. This includes periodic inspection and lubrication of all bearings and gearboxes, checking for wear on forming and sizing rolls, and verifying the alignment of all roll stands. The welding electrodes or induction coil must be kept clean and properly adjusted. A preventive maintenance schedule, based on operating hours, helps prevent unplanned downtime.
Safety is integrated into the mill's design. Physical guards enclose all moving parts such as rolls, drive shafts, and the flying saw. Emergency stop buttons are strategically located along the length of the line. Electrical cabinets are interlocked to cut power when opened, and the high-frequency welding unit is housed within a shielded enclosure to prevent electromagnetic interference. Proper training for all personnel on lockout-tagout procedures and safe threading practices is fundamental to creating a secure working environment around this heavy industrial equipment.
