Reasons for deformation of parts cut by laser cutting machine

Why does the laser cutting machine sometimes deform parts?

First of all, let's check whether the machine is not properly adjusted. Secondly, analyze what raw materials are used for cutting, and the reflective properties and metal properties of raw materials may affect the cutting effect. If it is cutting metal sheet, laser cutting belongs to thermal cutting, and thermal cutting will definitely deform. The deformation is relatively small compared with flame cutting machine and plasma cutting machine. However, there is still deformation. The size of deformation is closely related to the cutting material, the shape of the part, the cutting thickness, and the laser processing technology. The shape of the part largely determines the size of deformation. For example, if you cut a square, the thermal deformation will not be too large. But if you cut a long and narrow rectangle (10 * 2000mm), the deformation will be great. The reason for the deformation is that the heat expansion and contraction caused by uneven heating lead to the change of the switch.
 

Why does the laser cutting machine cut corners? How to deal with it?

Because metal laser cutting machine is a motor controlled lead screw. In this case, the laser cutting machine manufacturer believes that the end point and the starting point cannot return to the same position, which may be due to the problem of the drawing or the problem of the machine structure. The treatment method can be started from the following three aspects.

1. Turn acceleration and power should be adjusted properly

2. The figure is guaranteed to be round

3. Check whether your mechanical structure is accurate enough.

To sum up, similar phenomena are also common. If the motor is difficult to control, it is recommended to ask professional laser cutting machine manufacturer for technical guidance.

Maintenance and precautions of laser cutting machine in summer

In summer, the air humidity is high due to the rising temperature. The scientific maintenance of laser cutting machine can prevent many small problems in use, which are summarized as follows:

1. The cooling water temperature should not be too different from the air temperature. The laser and optical lens of the laser cutting machine are both cooled by water. Because the water in the air will condense into water when it is cold. When the cooling water temperature is lower than 5-7 degrees of room temperature, there will be condensation on the surface of the laser and optical lens, which greatly affects the light output efficiency of the laser and the transmission of the optical lens, It has a great impact on the laser energy and the service life of optical components. It is recommended that the majority of laser cutting machine users set the water temperature to 30-32 degrees, and control the temperature difference between cooling water and room temperature to be greater than 7 degrees.

2. When the temperature rises in summer, the working pressure of the cooling system of the laser cutting machine increases. It is recommended to check and maintain the internal moderate pressure of the cooling machine before the high temperature comes. The equipment pressure of different manufacturers is also different. It is recommended to consult the specific parameters of the equipment manufacturer before maintenance.

3. Due to the high temperature in summer, the deterioration rate of cooling water will also be accelerated. It is recommended that users of laser cutting machine use regular distilled water or pure water and regularly clean the scale to avoid the scale attached to the laser and the pipe affecting the laser power. Different types of laser cutting machines have different methods for cleaning scale. Please operate under the guidance of the equipment manufacturer.

4. Since the dust of the metal laser cutting machine is mainly metal powder, it is recommended to clean the dust in the gas cabinet of the laser cutting machine regularly and check the working condition of the cooling fan.

Safety Problem

In the process of using metal laser cutting machine, we often produce some dust that affects our eyes. For the sake of safety, we suggest that dust removal equipment must be installed, which is good for human health and machines. It is suggested that you master the following three points to protect your body.

1) The laser is invisible, and the laser beam is invisible to the naked eye. If you open the hood during maintenance, you must pay attention. Don't accidentally touch the light path. It's not fun to meet.

2) The harmful elements in the focus lens of the laser cutting machine should not be in frequent contact with the lens. The discarded lens should be specially treated and should not be thrown away.

3) We should pay attention to the material when processing. If it is carbon steel or stainless steel, it is not a problem. If aluminum alloy is processed in large quantities, the cutting dust will be suspended in the air and harmful to human body after inhalation. There is also a strong reflection when cutting aluminum plates. The cutting head needs a protective device, otherwise it is easy to break down.

According to years of experience in laser equipment research and development, laser cutting is much more environmentally friendly than plasma cutting and flame cutting. There is a large amount of dust, smoke and strong light when the plasma cutting machine is cutting, which requires a matching dust removal device. The laser cutting machine produces less dust, light is not very strong, and noise is also very small, which is relatively environmentally friendly.

Summary: scientific and orderly maintenance can effectively avoid some small problems in the use of laser cutting machine, effectively improve the performance and service life of some parts, and virtually improve the efficiency of work.

About HGTECH: HGTECH is the pioneer and leader of laser industrial application in China, and the authoritative provider of global laser processing solutions. We have comprehensively arranged laser intelligent machine, measurement and automation production lines, and smart factory construction to provide overall solutions for intelligent manufacturing.