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Laser Cutting Machine Temperature Problems: Causes, Effects and Solutions
Time:2024-11-08     
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During the working process, the laser cutting machine temperature control is very important. High temperature may affect the cutting quality and the service life of the equipment. The characteristics of the cutting material, laser power, cooling system, cutting speed, gas assist and ambient temperature are all key points to control the temperature of the laser cutting machine. By reasonably adjusting the settings of the laser cutting machine, the temperature during the cutting process can be effectively controlled, thereby improving the cutting quality and the service life of the equipment.

 

1. Importance of laser cutting temperature control


Fiber Laser Cutting Machine


Temperature control of laser cutting machines is very important for the following reasons:

 

Cutting quality:

Appropriate temperature ensures smooth and neat cutting edges. If the temperature is too high, it may cause the material to burn and deform, affecting the cutting effect.

 

Equipment life:

High temperature will accelerate the wear of the laser and other components and shorten the service life of the equipment. Temperature control can reduce the failure rate and maintenance costs.

 

Material damage:

Different materials have different sensitivities to temperature. Excessive temperature may cause some materials to melt, become brittle or deform, affecting subsequent processing.

 

Safety:

Overheating may cause fire or other safety hazards. Good temperature control helps to ensure the safety of operators and equipment.

 

Production efficiency:

Temperatures that are too high or too low may affect the cutting speed. Reasonable temperature control helps to improve production efficiency and reduce production costs.

 

In summary, good temperature control has an important impact on the quality of laser cutting, equipment maintenance and safety.

 

2. Working temperature of laser cutting machine


Working temperature of laser cutting machine


1) Suitable working temperature range of laser cutting machine

The suitable working temperature of laser cutting machine is generally between 15-30 degrees Celsius. If the temperature is too low or too high, it will affect the operation and cutting effect of laser cutting machine. Too low temperature can easily damage the parts of the equipment, and too high temperature can cause the cutting quality to decline.

 

2) The working temperature of laser cutting machine should not be too low

If the ambient temperature is low, the laser cutting machine should be heated to make it work at a suitable temperature. Generally speaking, when the room temperature is below 10 degrees Celsius, it needs to be heated. Too low temperature can cause water condensation in the machine processing taste, freezing and cracking of machine parts, and in severe cases, it will also affect the life of the machine.

 

3) The working temperature of laser cutting machine should not be too high

If the ambient temperature is too high, the internal temperature of the laser cutting machine will rise, which is easy to cause machine failure, and the moisture absorption of the added materials will be affected, which may cause the performance of the product to decline. Therefore, it is recommended to control the room temperature within a suitable range when using the laser cutting machine, and check the machine status frequently to ensure the normal operation of the machine.

 

In short, the laser cutting machine is a high-tech equipment that needs to work at a suitable temperature to ensure the quality of the processing effect and the stability of the machine. Different machine factories may have different requirements. It is recommended to read the manual carefully before using the laser cutting machine and follow the operating requirements specified by the equipment.

 

3. What are the factors that affect laser cutting machine temperature?


Temperature control is a very important factor in the operation of the laser cutting machine. There are many factors that affect the temperature of the laser cutting machine. The following is a detailed description of some of the main factors:

 

Laser power:

The output power of the laser cutting machine directly affects the heat generated during the cutting process. Too high power will cause overheating, while insufficient power may not be able to complete the cutting task.

 

Cutting speed:

The slower the cutting speed, the longer the material stays under the laser beam, and the more heat accumulates, which may cause overheating and material damage. The appropriate cutting speed can effectively control the temperature.

 

Material type:

Different materials have different thermal conductivity and melting points. For example, metal materials usually require higher temperatures for cutting, while plastics and wood can be cut at lower temperatures. The thickness of the material will also affect the temperature control during cutting.

 

Focus position:

The position of the laser focus has a great influence on the heat concentration during the cutting process. Too high or too low a focus position will affect the distribution of heat, resulting in poor cutting results.

 

Auxiliary gas:

The type of auxiliary gas used (such as oxygen, nitrogen or air) and the flow rate will affect the temperature during cutting. Different gases can affect the degree of oxidation and heat dissipation of the material.

 

Ambient temperature:

The temperature and humidity of the cutting environment will affect the cooling effect of the equipment and the heat treatment of the material. In a high temperature environment, the heat dissipation effect of the equipment may decrease, resulting in an increase in temperature.

 

Cooling system:

The cooling system (such as water cooling or air cooling) equipped with the laser cutting machine is essential for controlling the temperature of the laser head and other components. The performance of the cooling system directly affects the overall temperature of the equipment.

 

Reflection and heat dissipation:

The surface finish and reflectivity of the cutting material will also affect the absorption and dissipation of heat. Materials with rough surfaces or high reflectivity may cause heat to not be effectively conducted.

 

Equipment status:

The maintenance status of the laser cutting machine, such as the cleanliness of the laser head and the condition of the optical components, will affect the conduction and dissipation of heat, thereby affecting the overall temperature.

 

By taking these factors into consideration, the operator can better control the temperature of the laser cutting machine and improve the cutting quality and equipment efficiency.

 

4. What are the effects of temperature on laser cutting accuracy?


Laser Cutting Temperature


The effects of temperature on cutting accuracy of laser cutting machines are mainly reflected in the following aspects:

 

- Material deformation:

High temperature may cause thermal expansion or deformation of materials, especially thin plate materials, which will affect the cutting accuracy.

 

- Cutting edge quality:

Excessive cutting temperature will cause the material to melt or evaporate too quickly, resulting in rough cutting edges and increased burrs, affecting the quality of the final product.

 

- Laser beam stability:

The operating temperature of the laser will affect the stability and quality of the laser beam. Uneven temperature may cause changes in the shape and size of the spot, affecting the cutting accuracy.

 

- Heat-affected zone:

The heat generated during the cutting process will form a heat-affected zone. Excessive heat-affected zone may cause changes in the properties of the surrounding material, such as decreased hardness or embrittlement.

 

- Cutting speed:

High temperature may soften the material, affect the cutting speed and energy transfer during the cutting process, resulting in reduced cutting accuracy.

 

In order to maintain cutting accuracy, it is recommended to monitor and control the temperature during the cutting process and adjust the cutting parameters according to the characteristics of different materials.

 

In addition, if the cutting material is greatly affected by heat or has extremely high precision requirements, we recommend that customers use high-precision CNC shearing machines for cutting at room temperature.

 

SC high-precision shearing machine has an accuracy range of 0.03mm/m, and the sheared plates are suitable for laser welding. Laser welding has very high requirements for the straightness of the sheared plates, and ordinary laser cutting machines and shearing machines are far from meeting the requirements.


Shenchong high-precision shearing machine has a single-sided shearing straightness of 0.03mm, which is much larger than the 0.1mm required for laser welding. Therefore, it has become a high-quality precision shearing supplier for laser flux-free welding of automotive sheet metal.

 

5. The influence of laser cutting temperature on cutting quality


The laser cutting machine temperature problem has the following effects on cutting quality:

 

Material heat affected zone:

High temperature will cause the material to melt or burn during the cutting process, resulting in a larger heat affected zone, affecting the flatness and smoothness of the cutting edge.

 

Cutting speed:

Excessive temperature will cause the material to overheat, thus affecting the cutting speed. Excessive cutting speed may result in incomplete cutting, burrs or notches.

 

Gas assisted cutting:

In laser cutting, the temperature and pressure of gas (such as oxygen or nitrogen) are crucial to the cutting quality. Inappropriate temperature may lead to insufficient gas assistance, affect the discharge of slag, and cause rough cutting surface.

 

Focusing of laser beam:

Temperature changes may affect the performance of the laser, resulting in inaccurate focusing of the laser beam, thereby affecting the precision and quality of cutting.

 

Material deformation:

High temperature may cause thermal deformation of some materials, affecting the accuracy and dimensional stability of cutting.

 

Cutting marks:

Excessive temperature may cause scorching marks or color changes on the cutting surface, affecting the appearance of the finished product.

 

Therefore, controlling the laser cutting machine temperature is the key to ensuring the cutting quality, and it needs to be reasonably adjusted according to different materials and cutting requirements.

 

6. How to control the temperature of the laser cutting machine?



Controlling the temperature of the laser cutting machine is an important part of ensuring cutting quality and equipment safety. Here are some detailed measures:

 

Cooling system:

- Use a water cooling system to ensure that the temperature of the laser and cutting head remains in the appropriate range.

- Check the level and temperature of the coolant regularly and replace the coolant when necessary.

 

Ambient temperature control:

- Operate the laser cutting machine in a well-ventilated environment and avoid high temperature environments.

- Use air conditioning or other ventilation equipment to adjust the temperature of the working area.

 

Material selection:

- Choose suitable cutting materials, avoid using materials that are prone to overheating, and reduce thermal effects.

 

Cutting parameter optimization:

- Adjust the laser power, cutting speed, and focus position according to the material type and thickness to reduce overheating.

- Perform trial cutting to find the best cutting parameters.

 

Regular maintenance:

- Regularly check the components of the laser cutting machine, including the lens and lens, to ensure that they are not dirty or damaged, affecting heat dispersion.

- Clean the cutting head and guide rails to keep them in good operating condition.

 

Use temperature sensor:

- Install temperature sensor to monitor the temperature of cutting machine in real time and set overheat alarm system.

- Adjust operating parameters according to sensor feedback to avoid overheating.

 

Appropriate cutting interval:

- When cutting for a long time, increase the cutting interval appropriately to give the equipment time to cool down.

 

Laser selection:

- Choose high-efficiency laser with good heat dissipation design and temperature control system.

 

Through the above measures, the laser cutting machine temperature can be effectively controlled, cutting efficiency and quality can be improved, and the service life of the equipment can be extended.

 

7. Specific measures to solve the high temperature of the laser cutting machine


SC 3015 CNC Fiber Laser Cutting Machine


- Check the water pump:

Make sure the water pump is working properly, there is enough water in the water tank, and check for blockages or debris.

- Check the radiator:

Clean the radiator and make sure it is not blocked by dirt or debris.

- Check the cooling fan:

Confirm that the cooling fan is operating normally and clean the fan blades.

 

- Check the thermostat:

Make sure the thermostat is set correctly and working properly.

 

- Check for leaks:

Check for signs of leaks in the cooling system, repair leaks and replace damaged parts.

 

- Regular maintenance:

Clean the radiator and condenser regularly, check the water quality and water level in the water tank, and check the joints and pipes of the water system.

- Use refrigeration equipment:

Use a dedicated laser refrigeration water tank or a refrigerator with a compressor to control the water temperature.

Preventive measures and suggestions

- Choose equipment with good heat dissipation:

Buy fiber laser cutting machine with good heat dissipation equipment to reduce maintenance workload.

 

- ‌Regular inspection‌:

Regularly inspect and maintain equipment to avoid problems caused by equipment aging or blockage.

 

- ‌Use professional tools‌:

Use tools such as a multimeter to regularly check circuits and power supplies to ensure the normal operation of the equipment.

 

Different materials have different sensitivities to temperature. Controlling the cutting temperature can avoid overheating or burning of the material and ensure the cutting effect. Through temperature control, the application range of laser cutting can be expanded to a wider range of materials and thicknesses.

 

Appropriate temperature can improve the smoothness of the cutting edge, reduce burrs and deformation, and thus improve the quality of the finished product. Reasonable temperature control can optimize the use of laser energy, improve cutting efficiency, and reduce energy consumption.

 

Excessive temperature may cause fire or other safety hazards. Controlling temperature can ensure safe operation. Appropriate temperature can reduce the wear and failure rate of laser cutting equipment and extend the service life of the equipment.

 

In summary, controlling the laser cutting machine temperature is crucial to improving cutting effects, protecting equipment, and ensuring safety.


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