SAN Fiber Laser Cutting Machine

With the continuous development of industrial technology, mold laser welding machine has become an indispensable and important technology in modern industry. Laser welding technology has many advantages such as fast welding speed, high welding efficiency and good welding quality, and has become the mainstream technology used in modern mold manufacturing industry. Regarding the use of mold laser welding machine, this article will introduce it in detail from the following aspects.

1. Machine preparation

Before using the mold laser welding machine, you must first prepare the machine.

First, clean the dust and debris outside and inside the machine to ensure that the welding process will not be disturbed. Then check the water and electrical systems to confirm that all connectors and lines are connected and working properly. Finally, make sure that the gas and liquid in the machine are ready to ensure that the machine can work properly.

2. Confirm the welding material

The mold laser welding machine can weld different types of materials, such as aluminum alloy, stainless steel, magnesium alloy, etc. Before welding, you must first confirm what the material to be welded is, and try to choose the appropriate welding material. When choosing materials, you should choose according to the specific situation.

3. Machine debugging

Before welding, the machine should be debugged to confirm that all parameters are set correctly. Including laser power, welding speed, workbench height, weld width, weld depth, and other parameters. During the debugging process, we should be vigilant to prevent improper debugging from causing problems during welding.

4. Welding operation

When performing welding operations, we should make choices based on actual conditions. Among them, welding distance, welding time, workbench position, gas flow rate, and work site need to be selected according to actual conditions. During operation, the operation should be carried out in accordance with the operating instructions to ensure welding quality and safety.

5. Machine maintenance

The mold laser welding machine needs regular maintenance to ensure long-term stable operation of the machine. Maintenance work includes cleaning and maintenance, parts replacement, and regular inspection. During maintenance operations, attention should be paid to safety principles to ensure the safety of operators and the normal operation of the machine.

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Mold laser welding machine is a subclassification of laser welding machine, also known as mold laser repair welding machine. Its main principle is to use high-energy laser pulses to perform laser spot welding, laser repair welding and other methods to locally heat the tiny area. This is a new type of precision laser welding method. Therefore, the adjustment of the microscope has a great influence on the welding effect. When operating the mold laser welding machine, how to adjust the microscope to achieve the best effect?

1. Before the laser repair welding operation, turn the clarity adjustment knob on the outside of the eyepiece barrel of the microscope clockwise to the bottom so that the two eyepiece barrels are at the same height. The purpose is to keep the clarity seen by the two glasses consistent when observing the workpiece.

2. During operation, place the workpiece on the workbench, move the workbench up and down, and observe the workpiece in the microscope to make the workpiece in the best clear state in the field of view of the microscope. When laser repair welding any workpiece, the workpiece must be in a clear state. One is to ensure that the focal length is met by clarity, and the other is that the eyes can clearly see the laser repair welding process to ensure whether the repair welding quality is ok.

3. When laser welding, customers are strongly required to use two eyes to observe the workpiece at the same time when using a microscope. The eyes should not be close to the eyepiece or far away from the eyepiece. It is best to keep about 5 to 10 mm. When the sight lines cannot overlap, the two eyepiece seats of the microscope can be adjusted to make the workpiece we see three-dimensional. The high and low positions on the workpiece can be seen, especially the small positions of precision parts can be seen clearly. And the workpiece after welding can be checked to observe whether the welding position is bitten or burned to ensure that the welding position and height meet the requirements.

The mold laser welding machine and repair machine repair and weld cracks, broken corners, touch edges and damaged sealing edges of hard materials such as molds, precision injection molding, die casting, stamping, stainless steel, etc. at a temperature of 50-60 Rockwell; the accuracy is high, and the diameter of the laser welding point is only 0.2mm~1.5mm; the heating area is small, and the workpiece will not be deformed; after welding, it can be etched without affecting the effect.

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As one of the two basic modes of laser welding (the other is heat conduction welding), laser deep penetration welding is increasingly widely used. In order to obtain higher laser deep penetration welding benefits, this article summarizes the main influencing factors of this welding method, including laser power density, welding speed, focal position, shielding gas, workpiece joint assembly gap, material nature and other aspects, to help users to seek benefits and avoid harm, and make the best use of lasers and laser equipment.

1 Laser power density

The premise of deep penetration welding is to focus the laser spot so that it has a sufficiently high power density, so the laser power density has a decisive influence on the weld formation. The laser power controls the penetration depth and welding speed at the same time. For a laser beam of a certain diameter, when the laser power is increased, the penetration depth deepens and the welding speed increases.

There is generally a critical value for the laser power that reaches a certain welding penetration depth. When this critical value is reached, the molten pool boils violently, and when it exceeds the critical value, the penetration depth will decrease sharply. In addition, due to the force of metal vapor, small holes will be formed in the molten pool, and small holes are the key to deep penetration welding.

The focal spot power density is not only proportional to the laser power, but also related to the laser beam and focusing optical path parameters.

2 Welding speed

During deep penetration welding, the welding speed is inversely proportional to the penetration depth. If the welding speed is increased while keeping the laser power unchanged, the heat input will decrease and the penetration depth will also decrease. Therefore, appropriately reducing the welding speed can increase the penetration depth, but too low a speed will cause excessive melting of the material and weld penetration of the workpiece. Therefore, for a specific laser power and a specific thickness and type of material, there is a suitable welding speed range for obtaining the maximum penetration depth.

3 Focus position

During deep penetration welding, the focus position is crucial to maintain sufficient power density. The change in the relative position of the focus and the workpiece surface directly affects the width and depth of the weld. Only when the focus is located at a suitable position on the workpiece surface can the weld form a parallel section and obtain the maximum penetration depth.

4 Shielding gas

The shielding gas has two functions: 1) Exclude the air in the local welding area to protect the working surface from oxidation; 2) Suppress the generation of plasma clouds during high-power laser welding.

5 Workpiece joint gap

The gap between workpieces and the assembly gap are directly related to the penetration depth and weld width of the welded workpiece. In deep-melting welding, if the joint gap exceeds the spot size, welding cannot be performed; if the joint gap is too small, sometimes the process will produce undesirable effects such as overlapping plates and difficult fusion; if the joint gap is too large, it is very easy to weld through; slow welding can make up for some weld defects caused by too large gaps, while high-speed welding narrows the weld and has stricter assembly requirements.

6 Material nature

The absorption of laser by the workpiece material determines the efficiency of laser welding. There are two factors that affect the absorption rate of the material to the laser: 1) Material resistivity. After measuring the absorption rate of the polished surface of different materials, it is found that the absorption rate of the material to the laser is proportional to the square root of the resistivity, and the resistivity changes with the temperature; 2) The surface state of the material has a more important influence on the beam absorption rate, and thus has a significant effect on the welding effect.

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With the rapid development of science and technology today, laser marking machines have made great achievements in industrial production, artistic creation and other fields with their high precision and high efficiency. For many beginners and cross-border creators, it is a headache to know what file formats laser marking machines can support. Today, let's discuss what file formats laser marking machines can use

First of all, we must make it clear that laser marking machines mainly support vector graphics files. This is because vector graphics have the characteristics of infinite magnification without distortion, which is very suitable for laser marking machines, which require high-precision engraving. Among them, the most common vector graphics file formats include AI, EPS, DXF, PLT, etc.

AI files are a special format for Adobe Illustrator software. It supports rich graphic effects and editing functions and is one of the file formats commonly used by designers. EPS files are a cross-platform vector graphics format that can be opened and edited in a variety of design software. DXF files are a common data exchange format for CAD software. They contain rich graphic information and attribute data, which is very suitable for laser marking machine processing. The PLT file is a special format for HP plotters. Although it is relatively professional, it is also widely used in certain specific fields.

In addition to these common vector graphics file formats, laser marking machines also support some bitmap image formats, such as BMP, JPG, PNG, etc. Although bitmap images will be distorted when enlarged, their color richness and detail expression are incomparable to vector graphics. Therefore, in some occasions where color and texture need to be expressed, bitmap images are also a good choice.

Of course, different brands and models of laser marking machines may support different file formats. Therefore, when choosing a laser marking machine, we need to choose a model that supports the required file format according to our actual needs and usage scenarios. At the same time, we can also learn more about the details of the file format support of the laser marking machine by consulting the equipment manual or consulting the manufacturer's technicians.

In short, the file formats supported by the laser marking machine are rich and varied, including both vector graphics files and bitmap image files. As long as we master the characteristics and usage methods of these file formats, we can give full play to the advantages of the laser marking machine and create more exquisite and unique works.

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Mold laser welding machine and repair machine repair and weld cracks, broken corners, edges and damaged sealing edges of hard materials such as molds, precision injection molding, die casting, stamping, stainless steel, etc. at a temperature of 50-60 Rockwell; high accuracy, laser welding spot diameter is only 0.2mm~1.5mm; small heating area, workpiece will not deform; etching can be done after welding without affecting the effect.

Mold laser welding machine configuration and processing technology:

When the mold laser welding machine is repairing the mold, attention should be paid to how to meet the repair accuracy and repair quality. The control system of the mold laser welding machine plays a key role.

1. The mold laser welding machine should be monitored and operated with a 10X or 15X microscope.

2. The power supply of the mold laser welding machine can adopt a waveform adjustable function, which is suitable for welding different materials. Such as: mold steel, stainless steel, beryllium copper, aluminum, etc.

3. CCD system (camera system) can be used for monitoring. The function is: in addition to the operator observing from the microscope, non-operating personnel can watch the entire welding process through the display screen of the camera system. This device is beneficial to the technical training and exhibition demonstration of non-operating personnel, and has a good promotion effect on the promotion of laser welding technology.

4. It can melt welding wires of different diameters, from 0.2-0.8 in diameter.

5. The mold laser welding machine must use argon protection, and the program must be set to first emit argon and then laser to prevent the first pulse laser from oxidizing during continuous processing.

6. The parameters that can be set for the power supply of TFLASER mold laser welding machine are: current 50-400A, pulse width 0.1-20MS, frequency 0-50. The processing parameters for normal mold welding are as follows: current: 90-120; pulse width: 4-6; frequency 5-10. When welding beryllium copper and aluminum, the current increases by 30-50A

7. When laser welding molds, the most common problem is bite marks around the welding area. Laser blanking should be used to blank the welding area to cover the changes that may cause bite marks to prevent the appearance of bite marks. The spot can exceed the edge of the welding position by 0.1mm.

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