Dear users, summer is laser cutter laser failure Gaofajijie. The statistical results show that most of the faults of high-power laser cutting machine lasers are closely related to the user's operating order and the operating environment of the equipment. Most of them are caused by high temperatures, resulting in high humidity and dew of the laser. In order to prevent this situation, The time of equipment failure and the losses it brings are reduced. The tips are as follows:
The mechanism of preventable failure
A laser is a device that converts electrical energy into laser energy. The internal composition is relatively complex and involves many disciplines and fields such as light, machine, electricity, and calculation. Although optical fiber lasers are relatively low in environmental requirements compared to other types of lasers, they must also ensure that the operating environment meets the requirements and their own protective measures can effectively play a protective role. If there are omissions in the boot order, the closure of the chassis and the setting of the water temperature, it may cause the electron and optical devices cooled by the water inside the laser to cause the surface to dew due to the temperature difference between the inside and outside, thereby reducing the performance of the laser and even damaging the laser.
This measure is mainly to prevent internal electronic or optical components from dew, which can be divided into the following points:
1. Ensure that the chassis is closed
The case of the fiber laser is a closed design and an air conditioner or dehumidifier is installed. The purpose is to ensure that the various components in the chassis are in a relatively stable and safe temperature and humidity environment. If the chassis is not in a closed state, the high-temperature, high-humidity air outside the chassis can enter the interior of the chassis. When it encounters an internal water-cooled element, it condenses on its surface, causing possible damage. Therefore, the examination of the airtight of the chassis should pay attention to the following aspects: A. whether the doors of each cabinet exist and are closed. B. Whether the lifting bolts at the top are tightened. C. Whether the protective cover of the unused communication control interface at the rear of the chassis is covered and the used is secured.
2. Boot Order
Since it is impossible for the laser chassis to be completely closed, when the power is turned off at night, the air-conditioning of the chassis stops operating. If the room is not equipped with air-conditioning or the air-conditioning does not work at night, the external hot and humid air can gradually penetrate into the chassis. Therefore, when rebooting in the morning, you need to pay attention to the following operational steps: A. Start the total power supply of the laser(without light) and let the chassis air conditioning run for about 30 minutes. B. Start the matching chiller, wait for the water temperature to be adjusted to the predetermined temperature, and the laser will emit light. Remarks: China and Russia IE and other series of equipment installed with a temperature and humidity controller, to ensure that the air is in a state of pressure, in the temperature and humidity meet the requirements, the water chiller automatically started. C. Recommendations for normal processing: If possible, under the premise of ensuring safety, the laser will not lose power at night, so that the chassis air-conditioning remains operational. Or the laser installs the air conditioning room and keeps the air conditioning running continuously and steadily(including at night)
3. Water temperature setting
The cooling water temperature has a direct influence on the electrooptic conversion efficiency, stability and condensation. Normally, the water temperature of the cooling water is set as follows: The water temperature of the tap water(cooling laser module) should be set at about 21 degrees Celsius. For lasers above 2500W, the water temperature of deionized DI water(cooling optical parts) should be set between 27 degrees and 33 degrees. This temperature should be adjusted accordingly according to the ambient temperature and humidity. Generally speaking, the higher the ambient temperature, the greater the humidity, the greater the water temperature of DI water should increase accordingly. The basic principle is that DI water temperature should be above the dew point.