Maintenance and Troubleshooting of Second-hand Welded Pipe Equipment: Extend Service Life and Ensure Stable Production

During long-term operation, second-hand welded pipe equipment is prone to various failures due to factors such as wear, aging and improper operation, which not only affect production efficiency but also shorten the service life of the equipment. Proper daily maintenance and rapid troubleshooting of common faults are the keys to ensuring the stable operation and extending the service life of second-hand welded pipe equipment. For pipe processing enterprises, establishing a comprehensive maintenance and fault handling system can effectively reduce downtime losses and improve production continuity.

I. Daily Preventive Maintenance: Reduce the Probability of Failures

Daily maintenance is the foundation of fault prevention, and standardized maintenance procedures need to be established. It is necessary to check the wear of forming rolls and guide rolls every day, and timely clean up iron filings and sundries on the equipment; inspect the oil level and oil quality of the lubrication system, regularly replenish or replace lubricating oil to reduce component wear; check the water volume and water quality of the cooling system to prevent overheating of the high-frequency welding main unit caused by poor heat dissipation; examine the connection of electrical circuits to avoid poor contact or short circuit caused by loose and aging lines. Through daily basic maintenance, most potential hidden troubles can be eliminated in the bud.

II. Rapid Troubleshooting of Common Faults: Cut Down Downtime

In the operation of second-hand welded pipe equipment, some faults are common and frequent. Mastering rapid troubleshooting methods can greatly reduce downtime.

• Weld Defect Faults: In case of cold welding, missed welding, weld cracking and other problems, first check whether the power of the high-frequency welding power supply is stable, whether the welding coils and contacts are worn or displaced, and meanwhile inspect the butt joint quality and forming accuracy of steel strips. Most problems can be solved by adjusting welding parameters or replacing worn parts.

• Pipe Size Deviation: When finished pipes suffer from insufficient roundness, uneven wall thickness or excessive length error, it is required to check the wear condition and installation position of forming rolls and sizing rolls, and recalibrate the accuracy of the roll system; in addition, inspect the positioning sensors of the fixed-length cutting mechanism to ensure the cutting accuracy meets relevant requirements.

• Abnormal Noise and Vibration of Equipment: Abnormal noise or severe vibration during equipment operation is mostly caused by bearing wear, loose bolts or unbalanced transmission components. It is essential to shut down the equipment to inspect bearings, gears and chains of the transmission system, fasten loose parts or replace worn accessories.

III. Regular In-depth Maintenance: Investigate Potential Hidden Dangers

In addition to daily maintenance, regular in-depth maintenance shall be carried out on second-hand welded pipe equipment. Conduct oil testing and filtration of the hydraulic system every quarter, and replace aging seals to prevent hydraulic leakage; perform comprehensive inspection on the electrical control system every six months, remove dust from PLCs and inverters, and test the insulation performance of lines; fully calibrate the equipment frame and roll system every year, check whether structural parts have fatigue deformation, and carry out correction or reinforcement when necessary. In-depth maintenance can effectively identify potential hidden dangers that are difficult to detect in daily inspections and prevent major failures.

IV. Establish Fault Handling Files: Optimize Maintenance Management

Enterprises are recommended to establish fault handling files for second-hand welded pipe equipment, recording the phenomenon, causes, solutions and maintenance time of each fault. By analyzing fault data, summarize the rules of frequent faults and formulate targeted preventive measures in advance. Meanwhile, stock up on commonly used wearing parts such as bearings, seals and welding coils to avoid prolonged downtime caused by waiting for accessories.
Through sound daily maintenance, rapid fault elimination and regular in-depth upkeep, second-hand welded pipe equipment can maintain stable production performance for a long time and create sustainable economic benefits for enterprises.

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