QCW Fiber Laser Welding Machine

Fiber Welding Machine Features

1.The energy density is high, the heat input is low, the amount of thermal deformation is small, and the melting zone and the heat-affected zone are narrow and deep.

2.High cooling rate, which can weld fine weld structure and good joint performance.

3.Compared with contact welding, laser welding eliminates the need for electrodes, reducing daily maintenance costs and greatly increasing work efficiency.

4.The weld seam is thin, the penetration depth is large, the taper is small, the precision is high, the appearance is smooth, flat and beautiful.

5.No consumables, small size, flexible processing, low operating and maintenance costs.

6.The laser is transmitted through fiber optics and can be used in conjunction with a pipeline or robot.

Advantages of handheld laser welding machine

1. wide welding range: handheld welding head equipped with 5m-10M original optical fiber, to overcome the limitations of the table space, outdoor welding, long-distance welding.

2. Easy to use and flexible: handheld laser welding is equipped with moving pulleys, comfortable grip, adjustable work position at any time, no need to fix the work position, free and flexible, suitable for a variety of work environment scenarios.

3. A variety of welding methods: can achieve any angle of welding: stacked welding, butt welding, vertical welding, flat angle welding, internal angle welding, external angle welding, etc., can be a variety of complex welding seams of the workpiece, larger workpiece irregular shape welding. Achieve any angle of welding. In addition, it can also complete the cutting, welding cutting free switch, just change the welding copper nozzle for cutting copper nozzle can be very convenient.

4. Good welding effect: handheld laser welding is thermal fusion welding, compared to traditional welding, laser welding has a higher energy density, can achieve better welding effect, welding area heat impact is small, not easy to deformation, blackening, back traces of the problem, welding depth, full melting, solid and reliable, the strength of the weld reaches or even exceeds the parent material itself, which is not guaranteed by ordinary welding machine.

5. The weld does not need to be polished: after traditional welding, the weld joint needs to be polished to ensure that it is smooth and not rough. Hand-held laser welding is exactly the same as the processing effect of more advantages: continuous welding, smooth and no fish scale pattern, beautiful and no scars, less subsequent grinding process.

6. Welding without consumables: in most people's impression of welding operations are "left hand goggles, right hand clip welding wire". But with the handheld laser welding machine can easily complete the welding, more reduce the cost of materials on the production process.

7. With a number of safety alarms, the welding nozzle only when touching the metal touch switch is effective, remove the workpiece automatically lock light, and touch switch with body temperature sensor. High safety, to protect the safety of the operator during work.

8. Save labor costs: compared with electric arc welding, processing costs can be reduced by about 30%. The operation is simple and easy to learn to get started quickly, the technical threshold of the operator is not high, ordinary workers can be on the job after a short training, can easily achieve high-quality welding results.

What is a handheld fiber laser welding machine?

Handheld fiber laser welding machine is a new generation of laser welding equipment, non-contact welding, the operation process does not require pressure, its working principle is the high energy intensity of the laser beam directly irradiated on the surface of the material, through the interaction between the laser and the material, so that the internal melting of the material, followed by cooling crystallization to form a weld.

Handheld fiber laser welding machine to fill the laser equipment industry handheld welding gaps, overturning the traditional laser welding machine work mode, handheld instead of the previous fixed optical path, flexible and convenient, long welding distance, but also make laser welding in outdoor operation becomes possible.

Handheld welding is mainly aimed at carrying out long-distance, large workpiece laser welding, to overcome the limitations of the table travel space, welding heat affected area is small, will not lead to work deformation, blackening, back traces of the problem, and the welding depth, welding solid, dissolved fully, not only can achieve thermal conduction welding, but also continuous deep fusion welding, spot welding, butt welding, stack welding, sealing welding, seam welding, etc..

This process overturns the traditional working mode of laser welding machine, with the advantages of simple operation, beautiful weld seam, fast welding speed, no consumables, in the thin stainless steel plate, iron plate, galvanized plate and other metal materials welding, can perfectly replace the traditional argon arc welding, stainless steel plate, iron plate, aluminum plate and other metal materials welding.

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Laser welding machine protective gas types and role

Laser welding machines often use an inert gas to protect the solution cell during use, which can be disregarded when the material to be welded does not have surface oxidation. But most cases still need to use protective gas. Then the following Chuyuan photoelectricity for everyone to introduce the types of laser welding machine protective gas and role.

The types of laser welding machine protective gas are:

◆Helium, more expensive, but the best effect, so that the laser is not blocked, directly through, to the surface of the workpiece.

◆Argon, cheaper, denser, better protection, smoother surface of the welded part than helium, but susceptible to ionisation by high temperature metal plasma, which will block part of the beam to the workpiece, reducing the effective power of the weld and hindering the welding speed and depth of melt.

◆Nitrogen, the cheapest, is not suitable for welding certain stainless steels.

The role of the laser welding machine protective gas are:

1, to protect the workpiece in the welding process was oxidation, laser welding machine using protective gas, to set the protective gas, and then out of the laser, can prevent the laser welding machine in the continuous processing process, the pulse laser oxidation phenomenon.

2, to protect the focusing lens from metal vapour pollution and spattering of liquid molten droplets, especially high power welding, as the ejecta is very powerful, so it is necessary to protect the lens.

3, Protective gas can disperse the plasma shielding produced by high power laser welding. The metal vapour absorbs the laser beam and ionises into a plasma cloud, the shielding gas around the metal vapour is also ionised by the heat, increasing the compound rate of electrons by increasing the number of electrons and ions and neutral atomic three-body collisions to reduce the electron density in the plasma. Helium gas works best.

These are the types of protective gases used in laser welding machines and their role. In the actual use of the process, according to the actual situation to choose the protective gas, the general use of argon, but the argon protection effect is also good.

Laser welding industry development status and market size analysis in 2022

Laser processing is an efficient and precise processing method. Thanks to the full localization of fiber lasers, laser processing has been rapidly developing and popularizing in China in recent years. "Non-contact processing" and "high energy density" are important features of laser processing, making it compared to traditional processing methods, with high efficiency, high precision, low energy consumption, small material deformation, easy to control and other inherent advantages. Laser processing equipment is a wide range of traditional processing equipment to replace, such as laser marking machine instead of inkjet printer, laser cutting machine instead of flame cutting equipment, laser welding machine instead of traditional welding equipment. In the panel, semiconductor, lithium and other emerging manufacturing industries, laser equipment is also being increasingly used. The U.S. Office of Science and Technology Policy has statistics, in 2010, 50% of the U.S. GDP related to the application and expansion of laser technology, the domestic ratio of about 10%-15%, the industry growth space is still broad.

After years of development, especially with the breakthrough of localization of core components such as upstream lasers, the domestic laser industry now has a relatively complete industry chain, from upstream laser chips, active optical fibers, light-emitting crystals, to various lasers, control systems, and various laser equipment, all of which can find excellent suppliers in China. As a representative of emerging technologies, the laser industry has shown significant growth over the past decade.

The proportion of all laser equipment used for industrial processing is about 60%. Welding is one of the main scenarios for laser industrial applications and is an efficient and precise welding method using a high energy density laser beam as a heat source. From the path of technological breakthrough, China's laser equipment along the marking, sheet metal cutting, welding, micro and nano processing breakthrough direction, marking and sheet metal cutting equipment technology has been relatively mature, technology iteration has slowed down; welding and micro and nano processing, will be the next phase of laser processing technology technology iteration of the main direction. Compared with laser cutting and laser marking, laser welding non-standardized properties are more obvious, the processing accuracy and motion control requirements are higher, there is a deeper technical know-how.

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