Detailed Explanation of the Factory-Outgoing Commissioning Procedure for Tundish Products

Category: News and Information

Time: 2026-06-23

 

The ladle is a critical specialized piece of equipment in the metallurgical and foundry industries, used for receiving, transferring, and pouring molten iron at high temperatures. Factory commissioning is a key quality‑control step that ensures stable operation and optimal performance under operating conditions. To standardize the factory acceptance process and harmonize commissioning criteria, the four principal commissioning procedures for finished units are summarized below; all steps are conducted in strict compliance with industry‑specific acceptance and design standards for special‑purpose equipment.

 

I. Verification of the Main Body’s Structural Appearance

As the first foundational step in commissioning, this phase focuses on verifying the vessel’s shell formation, weld quality, and the dimensional accuracy of its load‑bearing components. The equipment’s tank is fabricated by integral welding of thick steel plates, requiring smooth, well‑defined arcs and flat, defect‑free surfaces—free of deformation, cracks, or surface irregularities. All welds must be full and uniform, with no lack of penetration, porosity, or slag inclusion, and transitions should be smoothly ground. The nozzle’s flow‑guiding curved surface is sleek and precisely shaped, ensuring that molten iron pours without spattering or stagnation. The upper lifting lugs are tightly fitted to the high‑strength suspension beams, with bolts securely tightened and evenly loaded; the structure exhibits no deformation or misalignment, thereby guaranteeing the equipment’s structural integrity and load‑bearing stability.

 

II. No-Load Trial Operation of the Rotary Drive System

The drive system serves as the core unit for tilting the molten‑iron ladle, featuring both manual and electric actuation modes. A full‑stroke no‑load commissioning was conducted throughout the entire process. Key components—including gears, the reduction gearbox, the rotating shaft, and bearings—were tested to ensure proper operation; the transmission must exhibit smooth meshing, uniform resistance, and seamless rotation, with no sticking, unusual noises, or vibrations. The manual handwheel offers light, responsive operation, enabling precise fine‑tuning of the tilt angle, while the electric mode provides smooth start‑stop performance and rapid response, with excellent synchronization. Both drive modes can independently execute the full rated forward and reverse tilt strokes, and all operating parameters fully comply with factory specifications.

 

III. Integrated Machine Suspension Interlocked Trial Run

A full‑machine integrated commissioning was conducted under simulated on‑site lifting conditions, with the molten iron ladle positioned at its fixture. The lifting lugs were verified to be tightly and securely mated with the lifting brackets, ensuring that the entire unit maintained a stable, upright suspended posture, with balanced load distribution and no noticeable sway. In coordination with the drive system, multiple full‑stroke tilting tests were performed; the ladle rotated smoothly and uniformly, with all components operating in synchronized harmony, free of interference or misalignment. Piping and ancillary fittings remained stable during ladle rotation, with no risk of pulling, twisting, or detachment. Overall, the machine’s integrated operability meets the demanding requirements of high‑frequency, high‑temperature operations at the worksite.

 

IV. Parameter Verification and Finished-Product Archiving

Following completion of commissioning, technicians meticulously cross‑check key parameters—such as equipment dimensions, tilt angles, drive specifications, and load‑bearing ratings—against the design drawings, verify all commissioning records, and confirm that all performance criteria have been met. They then carry out paint‑work repairs and re‑inspect all components to identify and address any issues such as looseness or wear. Next, they compile and file the complete set of quality‑inspection and commissioning documentation, establish a product traceability record, and, upon confirming that the equipment is compliant, proceed with full‑assembly and shipment for on‑site deployment.

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