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Laser Welding Machine
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Laser Welding Machine

Views: 0     Author: HanTenCNC     Publish Time: 2021-09-24      Origin: Site

Automatic Welding MachineFaced with all kinds of laser welding machines on the market, do you feel very confused. Are you looking forward to choosing a laser welding machine that suits you so that you can easily complete your projects and plans. We will solve your confusion and take you in-depth understanding of the classification, application, selection and maintenance of laser welding machines. We will provide you with the most popular laser welding machine and customized welding machine service and after-sales service in 2021. Allows you to easily weld your materials at home to meet your laser welding machine projects and plans.


What is a laser welding machine?

Laser welding uses high-energy laser pulses to locally heat a material in a small area. The energy of laser radiation diffuses into the material through heat conduction, and the material is melted to form a specific molten pool. It is a new type of welding method, mainly for the welding of thin-walled materials and precision parts. The laser welding machine can realize spot welding, butt welding, stitch welding, sealing welding, etc. It has many advantages, such as high aspect ratio. , The width of the weld is small, the heat affected zone is small, the deformation is small, the welding speed is fast, the weld is smooth, beautiful, no treatment or simple treatment after welding, high quality of the weld, no porosity, precise control, and small focus spot , High positioning accuracy, easy to realize automation.


Classification and advantages of laser welding machine

Laser welding machines are classified into three categories according to their working principles, one is YAG laser welding machine, the second is optical fiber transmission laser welding machine, and the third is continuous laser welding machine, also known as fiber laser welding machine. The advantages and disadvantages of several welding machines are introduced below.


1. YAG laser welding machine

YAG laser welding uses high-energy pulsed lasers to weld workpieces. It uses pulsed xenon lamps as the pump source and ND: YAG as the working material for laser generation. The laser power supply first pre-ignites the pulsed xenon lamp, and discharges the pulsed xenon lamp through the laser power supply, so that the xenon lamp generates light waves of a certain frequency and pulse width. The light waves irradiate the ND: YAG laser crystal through the condenser cavity to excite the ND: YAG laser crystal to generate laser light. After passing through the resonant cavity, a pulsed laser with a wavelength of 1064nm is generated. The laser beam is expanded, reflected (or transmitted through an optical fiber), and then radiated to the surface of the workpiece, so that the workpiece is partially melted and welded. The frequency, pulse width, movement speed and direction of the pulsed laser required for welding can be controlled by PLC or industrial PC, and the laser energy can be controlled by adjusting the size of the current, the frequency of the laser, and the pulse width.


advantage:

1. The welding seam is deep and narrow, and the welding seam is bright and beautiful.

2. Due to the high power density, the melting process is extremely fast, the input heat of the workpiece is very low, the welding speed is fast, the thermal deformation is small, and the heat affected zone is small.

3. High density. In the process of weld formation, the molten pool is constantly stirred, and the gas escapes, resulting in a non-porous penetration weld. The high cooling rate after welding is easy to make the weld seam microstructure, and the weld seam strength, toughness and comprehensive performance are high.


shortcoming:

1. The energy consumption is relatively high, and the electricity is relatively expensive, and the power per hour is 16-18KW

2. The size of the solder joints is not uniform and uneven

3. The welding speed is slow

4. The laser tube needs to be replaced frequently, about once every six months.


2. optical fiber transmission laser welding machine

Optical fiber transmission laser welding machine is a kind of laser welding equipment that couples high-energy laser beam into optical fiber, and after long-distance transmission, it is collimated into parallel light by a collimator, and then focused on the workpiece to perform welding. For parts that are difficult to be welded, the flexible transmission non-contact welding is implemented, which has greater flexibility. The laser beam of the optical fiber transmission laser welding machine can realize the splitting of time and energy, and can process multiple beams at the same time, which provides conditions for more precise welding.


advantage:

1. The optical fiber transmission laser welding machine is equipped with a CCD camera monitoring system, which is convenient for observation and precise positioning.

2. The energy distribution of the welding spot of the optical fiber transmission laser welding machine is even, and it has the best spot required for welding characteristics.

3. The optical fiber transmission laser welding machine is suitable for various complicated welding seams, spot welding of various devices, and seam welding of thin plates within 1mm.

4. The optical fiber transmission laser welding machine adopts a ceramic condenser cavity imported from the UK, which is corrosion-resistant and high-temperature resistant. The cavity life is (8-10) years, and the xenon lamp life is more than 8 million times.

5. Special automated tooling fixtures can be customized to realize mass production of products.


shortcoming:

1. High energy consumption, relatively expensive electricity.

2. The welding speed is relatively slow

3. It is difficult to achieve deep welding


3.fiber laser welding machine

Fiber laser welding machine is a continuous laser directly produced by a high-power fiber laser, which is different from pulsed lasers and has stable performance. Good light


advantage:

1. The laser beam quality is excellent, the welding speed is fast, and the welding seam is firm and beautiful

2. Industrial PC control, the workpiece can move on a plane trajectory, and can be welded points, straight lines, circles, squares or any plane graphics composed of straight lines and arcs;

3. High electro-optical conversion rate, low energy consumption, long-term use can save users a lot of processing costs;

4. The equipment has high reliability and can be processed continuously and stably for 24 hours to meet the needs of industrial mass production and processing;

5. Due to the small size of the machine and the soft light path, it can be used with most of the tooling and automation equipment


shortcoming:

Compared with other welding equipment, the price is slightly higher.


According to working methods and applied materials, it can often be divided into handheld laser welding machine, automatic laser welding machine, laser spot welding machine, mold laser welding machine, jewelry laser welding machine and advertising word laser welding machine, etc.


How much is the laser welding machine

If you want to buy a cheap laser welding machine, but don't know what its price is? Or if the prices in your country are high? Please contact us, according to your needs, to provide you with the appropriate configuration, different laser power, function, appearance, the price is between 3000-20000 US dollars, of course this is not the final price, taxes, customs clearance fees and transportation costs should be included In the final price.


How to choose the right laser welding machine

1. Choose the welding machine you need according to the processing material. If you are welding jewelry, such as necklaces, rings and bracelets, it is recommended that you use a jewelry laser welding machine. If you are in the advertising industry or you need to weld advertising characters, you can choose the advertising character welding machine; if you want to perform mold repair welding, you can choose the mold laser welding machine; if you are only dealing with ordinary For steel welding, you can choose a manual laser welding machine

2. Choose according to your purpose. If you want to use it at home and have requirements for the welding beauty of the workpiece, you can choose the YAG laser welding machine. The welding seam is bright and beautiful, the heat is very low, the welding speed is fast, and the thermal deformation is small. The heat affected zone is small.

If you want to weld a large number of workpieces, it is recommended that you choose an optical fiber transmission laser welding machine, which can customize special automatic tooling fixtures to achieve mass production of products.

3. According to your budget, you can choose the most suitable machine according to your budget. If your budget is sufficient, you can choose fiber laser welding machine, which has good light speed, fast welding and stable machine. If your budget is limited, you can choose YAG laser welding machine and fiber transmission laser welding machine. Compared with fiber laser welding machine, these two laser welding machines are cheaper

If you have any questions, we look forward to your contacting us, our sales will recommend you the most suitable price machine.


How to maintain and repair laser welding machine

1. Before starting, please confirm that the water level in the water tank reaches the specified position.

2. Change the water in the water tank every 30 days to ensure that the condensing cavity is clean, otherwise it will affect the laser energy, and the injected water is pure water.

3. Clean the dust screen regularly (about 15 days). The cleaning method is to remove the net, spray it directly with compressed air, or rinse it with tap water.

4. If the filter element turns yellow or black, it should be replaced in time. The longest replacement time is 2 months.

5. When winter comes, in order to prevent freezing, the chiller can always be kept above 0 degrees Celsius. If the conditions are not met, the chiller can keep running so that the water in the pipeline can keep flowing and prevent freezing. According to the actual situation of the chiller, antifreeze can be added appropriately.

6. During holidays, if the chiller is in a shutdown state or is shut down for a long time due to a failure, the water in the water tank and pipeline of the chiller can be discharged as much as possible.

7. Check the optical components on time

Machines and equipment should be inspected for vulnerable and important parts after running for a period of time. Generally, after two weeks or a working cycle, the components in the optical path such as YAG rods, dielectric diaphragms and lens protection glass should be inspected before starting the machine. There is no dust and other pollution on the optical components. If there is any abnormality, it should be dealt with in time to avoid damage to the optical components when the machine is turned on.

8. Check the laser beam quality on time

The quality of the laser beam of the laser welding machine is very important for the operation of the machine and equipment. Operators usually use laser dimming paper to check the laser output spot condition. If the spot is uneven or the energy drops, it is necessary to adjust the resonator of the optical device and fine-tune the spot to ensure the quality of the laser beam.


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