When the temperature of the laser cutting machine working environment is below 0 ℃, the liquid water solidification volume becomes larger may cause irreversible damage to the pipelines, joints and components in the water cooling system. If the water cooling system components freeze, will bring unnecessary trouble to the work.
Now the following warm tips for winter below 0 ℃ anti-freeze protection measures, please read carefully, so as not to cause unnecessary losses.
1、Do not add antifreeze
If the working environment will not be blacked out and the user does not consider the cost of electricity, the water cooler is not turned off at night to ensure that the cooling water is in circulation and the temperature is not lower than the freezing point.
2、Use antifreeze as coolant
If there is a power outage in winter and the condition of emptying coolant every day is not available, then antifreeze must be used.
The base liquid of antifreeze is generally composed of alcohol and water, which requires high boiling and flash points, high specific heat and conduction capacity, low temperature viscosity, low blistering, and no corrosion of metal parts and rubber hoses. When choosing or blending antifreeze, its freezing point should be 5℃ lower than the minimum temperature of the use environment.
3、The choice of antifreeze
Add professional brand antifreeze in the water-cooled machine, such as Clariant’s AntifrogenN antifreeze, the minimum ratio is 3:7 (antifreeze 3, water 7), after adding antifreeze can resist -15℃ without freezing.
4、The ratio of adding antifreeze
|Antifreeze ratio||Water ratio||Working environment temperature|
5、Cautions on the use of antifreeze
Any antifreeze can not completely replace deionized water and can not be used for a long time throughout the year. After the winter passes and the temperature rises, you must use deionized water or pure water to clean the pipeline and resume the use of deionized water or pure water as a coolant. At the same time, during the holiday period or laser borrowing its long power outage does not work, please completely empty the water inside the laser, water cooler, machine tool pipeline.