How to choose the appropriate power for laser cutting machine? This is the first question asked by many customers who are preparing to purchase laser equipment. Power is one of the core parameters of a laser cutting machine, which directly determines what materials the equipment can cut, how thick it can cut, whether it cuts quickly or not, and also directly affects the procurement budget and long-term operating costs. The power selection is too small, the equipment capacity is insufficient, and many orders cannot be accepted; If the power is chosen too high, the investment will be wasted, and the daily electricity and maintenance costs will also increase accordingly. This article combines industry experience to help you clarify the idea of power selection.
1、 What does power ultimately determine?
The impact of power on laser cutting machines can be summarized into four aspects:
Cutting ability: The higher the power, the thicker and wider the material range that can be cut. This is the most direct manifestation of power.
Cutting speed: With the same material and thickness, the higher the power, the faster the cutting speed, and the higher the unit time production capacity, which is particularly important for mass production.
Cutting quality: When cutting thin plates with high power, higher speeds can be used, resulting in a smaller heat affected zone, smoother cross-sections, fewer burrs, and better verticality.
Operating costs: The higher the power, the higher the equipment purchase price, power consumption, auxiliary gas consumption, and subsequent maintenance costs.
So, the essence of choosing power is to find a balance between processing requirements and overall costs, rather than simply pursuing the bigger the better.
2、 Select power based on material and thickness
The type and thickness of the commonly cut material are the most critical starting points when selecting power. Taking metal cutting as an example, the industry can usually refer to the following scope:
Material thickness reference power
Carbon steel below 6mm 1000-1500W
Carbon steel 6-12mm 1500-3000W
Carbon steel 12-20mm 3000-6000W
Carbon steel above 20mm, 6000W and above
Stainless steel/aluminum alloy below 3mm, starting at 1500W
Stainless steel/aluminum alloy 3-8mm 3000-6000W
Stainless steel/aluminum alloy 8mm or above, 6000W or above
It should be noted that the above is a general reference for metal cutting. If the processing object is non-metallic or thin film materials, the power selection logic is completely different. Usually, such high power is not required, but more emphasis is placed on cutting accuracy and operational stability.
3、 Select power according to business mode
Mainly focused on precision processing of thin plates (such as sheet metal chassis, kitchenware, advertising words): The core of the business is efficiency and accuracy. Equipment with a power of 1000-3000W has fast cutting speed, low energy consumption, and the highest return on investment when cutting 1-5mm plates.
Involving the processing of medium and thick plates (such as engineering machinery, steel structures, and agricultural machinery parts): The bottleneck lies in the cutting ability. Equipment ranging from 6000-12000W can significantly improve the processing capacity of plates over 12mm and broaden the business scope.
Diversified and mass production (such as large contract factories): Orders are variable and large in quantity, and high-power equipment with a capacity of over 12000W has stronger adaptability, which can accommodate thin, medium, and thick plates, achieving multi-purpose use of one machine.
Start up enterprises or small processing shops: mainly engaged in thin plate and stainless steel processing, occasionally accepting orders of medium thickness. 3000-6000W is a cost-effective and flexible choice.
4、 Power selection in precision manufacturing scenarios
In precision manufacturing fields such as semiconductors, perovskite photovoltaics, and OLED displays, laser cutting often targets flexible materials such as PE films, protective films, and functional thin films. The power requirements for this type of process are completely different from those for metal cutting - the power usually does not need to be very high, but the requirements for cutting accuracy, repeatability, and thermal impact control are extremely demanding. Taking Baode Automation's laser cutting machine as an example, this equipment is specifically designed for the post cutting process of perovskite solar photovoltaic films. The cutting accuracy can reach ± 0.1mm, the repeatability accuracy is ± 0.02mm, and the product qualification rate is ≥ 99%. This indicates that in the field of precision thin films, the appropriate power is not necessarily the greater the better, but rather needs to be matched with material characteristics, process pace, and yield requirements.
5、 Common Misconceptions
Misconception 1: The higher the power, the better. Power is just one of the parameters, and the stability of the machine tool, the accuracy of the guide rail, and the servo system are equally critical. High power with low precision machine tools cannot produce good products.
Misconception 2: Only focus on the maximum cutting thickness. The maximum cutting thickness advertised by manufacturers is often the limit value that can be barely cut through at low speeds and high gas consumption. The cross-sectional quality is poor and does not have practical production value. Therefore, attention should be paid to high-quality cutting thickness.
Misconception 3: Ignoring long-term costs. In addition to the purchase price, it is also necessary to calculate the electricity cost, auxiliary gas, consumables such as lens nozzles, and maintenance costs. The higher the power, the greater these expenses are usually.
Misconception 4: Only focus on price without considering service. Equipment is a long-term investment, and after-sales response, technical support, and operation training are equally important to avoid buying equipment without anyone taking care of it.
Conclusion
There is no universal standard answer for selecting power, the one that is most suitable for one's own business is the best. It is recommended to bring actual material samples to the manufacturer for on-site sampling, and speak with real cutting effects. If you are struggling with how to choose the power of a laser cutting machine, please feel free to contact Baode Automation. Our engineering team can provide professional selection suggestions based on your material, process, and production capacity needs, and help you choose the truly suitable equipment.
