Personnel Training for Operating the Japanese-Made 25 Used Tube Mill

Implementing a rigorous and precision-focused training program is paramount for the safe, efficient, and high-quality operation of the Japanese-made 25 used tube mill. Given its specialization in manufacturing small-diameter, thin-walled tubing (e.g., round Φ9.53–25mm, thickness 0.3–1.2mm), training must extend beyond general procedures to instill a mindset of meticulous attention to detail, an understanding of precision mechanics, and specific considerations for operating a pre-owned, high-precision system.

1. Foundational Theoretical and Precision Awareness Training:
The program must begin with comprehensive theoretical instruction. Trainees require a clear understanding of the complete production sequence and the specific role of each component: the head uncoiler and accumulator for tension control, the forming section (8 horizontal, 7 vertical stands plus press roller) for progressive shaping, the solid-state high-frequency welder for joining, the sizing section (4 horizontal, 4 vertical stands with 40mm/20mm shafts) for final calibration, and the cold saw with run-out table. Crucially, the curriculum must cover the principles of welding thin-gauge materials and the critical importance of the specific mold sets (e.g., for Φ12.7, 16x16mm, or flat oval 18x8mm) in achieving exact final dimensions. A dedicated module must address the unique aspects of a used tube mill, focusing on how to identify signs of wear in precision components that could affect tolerances. Safety training must emphasize hazards specific to high-frequency welding and high-speed handling of thin strip steel.

2. Hands-On Practical and Setup Training:
Supervised, hands-on practice is indispensable for building competency. This phase should be segmented into precise modules:

• Pre-Operation Inspection and Setup: Trainees must master a detailed checklist tailored for a precision used tube mill. This includes verifying the condition and alignment of the specific installed molds, checking for minimal play in the roll stands, inspecting weld contacts for wear, ensuring the accumulator provides smooth tension control, and confirming the cold saw blade is sharp and correctly aligned for clean cuts on thin-walled tube.

• Startup, Running, and Shutdown Sequences: Under close supervision, trainees practice the complete operational sequence, with emphasis on achieving and maintaining stable conditions for thin-material processing. Key skills include threading the thin strip without damage, establishing a stable and precise weld parameter, monitoring the forming process for any minute misalignment, and executing a controlled shutdown.

• Tooling Changeover and Calibration: Given the wide range of tube sizes and profiles (from Φ9.53mm round to 20x14mm square), efficient and meticulous procedures for changing mold sets and recalibrating the mill must be practiced repeatedly, following strict Lockout-Tagout (LOTO) protocols.

3. Troubleshooting for Thin-Wall Production and Maintenance Ethics:
Operators must be trained to recognize subtle signs of issues common in precision used equipment. This includes identifying causes of dimensional drift, surface scratches from worn guides or rolls, irregularities in the weld bead on thin material, and vibrations affecting cut quality. Training should provide a systematic troubleshooting approach for thin-wall production challenges. Furthermore, personnel must be instilled with the importance of "precision maintenance" – meticulous cleaning, proper lubrication of guide components, and the absolute necessity of accurately logging all setup parameters, production observations, and any minor deviations. This detailed record-keeping is vital for diagnosing trends and maintaining the consistent performance of a high-precision asset.

In conclusion, effective training for this used tube mill must blend deep theoretical knowledge with extensive, careful practical application, all within a framework of precision and safety. It should specifically cultivate the skills and awareness needed to operate and maintain a refurbished, precision machine to its full potential, ensuring reliable production of high-quality small-diameter tubing and protecting the long-term value of the equipment.

For more information, please pay attention to the website of Jinyujie Mechanical and Electrical Used Pipe Mill Supplier：www.usedpipemill.com.