Can Laser Cleaning of Molds Operate Continuously For 24 Hours?

In large injection molding plants, die casting plants, and tire mold workshops, mold maintenance tasks are heavy and production lines need to be kept running continuously. Many users are concerned about whether laser cleaning machines can operate continuously for 24 hours without interruption. This article provides a clear answer and gives the necessary conditions, parameter settings, inspection points, and risk avoidance solutions for 24-hour continuous operation.

qualified industrial-grade pulsed laser cleaning machine for molds can support 24-hour continuous operation, provided that it meets the requirements for heat dissipation, power supply, operation and maintenance, and working conditions. However, not all models are suitable for all-weather operation: small air-cooled portable models, low-configuration assembled machines, and off-brand equipment are not recommended to work continuously for a long time, as they are prone to triggering high temperature protection, unstable power, and optical path failure.

Which equipment can operate continuously for 24 hours?

Stable 24-hour operation is possible.

Water-cooled pulsed fiber laser cleaning machine

Standard configuration includes an industrial constant-temperature chiller, providing strong heat dissipation. Temperature control of the laser, galvanometer, and optical components is stable, with no significant power drift even after prolonged operation.

The laser uses an industrial-grade fiber optic module with a design life of ≥100,000 hours, supporting long-term full-load output.

The entire machine’s circuitry, airflow, and structure are designed for continuous industrial operation, suitable for high-intensity use in mold workshops.

Applicable scenarios: Centralized maintenance in large factories, automated robotic arm cleaning, night shift work.

Not recommended for 24-hour continuous operation.

Pure air-cooled small portable laser cleaning machine

Relies on natural fan cooling, which has limited efficiency. After 4-6 hours of continuous operation, the machine body and laser temperature continue to rise, triggering high-temperature power reduction and automatic shutdown protection. Prolonged overload will accelerate light source aging. It is recommended that each operation last ≤6 hours, with a minimum 30-minute downtime for cooling.

Low-configuration assembled machines and refurbished equipment:

The cooling system, circuitry, and optical components are of poor quality, making them prone to overheating, lens ablation, and galvanometer jamming during prolonged operation, significantly increasing the failure rate.

Continuous wave laser cleaning machines:

High heat output and rapid temperature rise not only make the equipment prone to failure but also easily damage mold coatings and nitriding layers. They are also unsuitable for long-term cleaning of coated molds.

Five essential prerequisites for 24-hour continuous operation

Cooling System Operates Normally Throughout

Water-cooled Models: Use deionized water/dedicated coolant; tap water is strictly prohibited (it easily forms scale and clogs pipes); check water level, flow, and temperature daily, maintaining a standard water temperature between 20℃ and 28℃; regularly clean the water tank, filter, and pipes to remove scale.

The chiller must be placed in a well-ventilated area, away from heat sources, and the ambient temperature should not exceed 35℃; install exhaust ventilation equipment in enclosed workshops.

Stable Power Supply System

High-power models (1500W and above) are recommended to have a dedicated power line, not sharing a circuit with high-power equipment such as welding machines, air compressors, and die-casting machines; voltage fluctuations should be controlled within ±5%. Unstable voltage will cause power fluctuations, affecting cleaning effectiveness and damaging the power module.

Air Source and Dust Removal System Operate Normally

The adjustable air blowing device and negative pressure dust removal system should be kept running throughout the process: on the one hand, to promptly remove high-temperature dust and prevent residue from burning the lenses and molds; on the other hand, to prevent large amounts of dust from entering the equipment and contaminating the optical path and circuit boards. Regularly drain and clean the air circuit filter to ensure stable air pressure between 0.2 and 0.35 MPa.

Set process parameters appropriately to avoid overloading

Continuous 24-hour operation at full power is not recommended: For routine carbon buildup and oil stains: set power at 50% to 70% of the rated value, leaving a performance margin; When dealing only with heavy and stubborn stains, briefly increase power, and appropriately reduce power during breaks for no-load operation to dissipate heat; For high-reflectivity aluminum molds, copper molds, and molds with coatings, use conservative parameters throughout to prevent mold damage and cumulative heat load on the equipment.

Regular inspections and rotating shifts

Implement two/three shifts of personnel to prevent unattended operation of the machine for extended periods:
Inspect every 1-2 hours: check water temperature, equipment alarms, lens condition, and abnormal machine noises; If the protective lens is found to be dirty or fogged, immediately stop the machine and replace it; continuous operation with dirty lenses is prohibited; Perform simple dust removal on the machine body and cooling filter every 8 hours.

FAQ

Cleaning power weakens after several hours of operation

Causes: Increased water temperature, clogged cooling filter, dust accumulation on lenses; Solution: Clean the filter, check water circulation, replace dirty lenses, and if necessary, temporarily stop the machine to cool down for 15-20 minutes.

Frequent high-temperature alarms and shutdowns

Causes: Insufficient cooling water/poor water quality, excessively high ambient temperature, chiller malfunction; Solution: Replenish or change water, improve workshop ventilation, and inspect the chiller pump and piping.

Aberrant light spot, uneven cleaning

Causes: Prolonged high temperature causing galvanometer temperature drift and lens thermal deformation; Solution: After shutdown and cooling, recalibrate the galvanometer and red light, and replace aged lenses promptly.

Frequent whitening and discoloration of mold coating

Causes: Continuous high temperature of the equipment + excessively high parameters, resulting in heat accumulation; Solution: Reduce power, increase scanning speed, and increase the number of layer cleaning cycles.

Conclusion

Our industrial water-cooled laser cleaning machines are fully designed for 24-hour continuous operation, ideal for large mold factories and automated production lines. If you need equipment for non-stop working or full set of operation guidelines, please contact us anytime.