Laser Welding Machine
What is a handheld fiber laser welding machine?
The handheld fiber laser welding machine is a new generation of laser welding equipment, which belongs to non-contact welding. The operation process does not need to be pressurized. Its working principle is to directly irradiate a high-energy intensity laser beam on the surface of the material through the interaction of the laser and the material. , The material is melted inside, and then cooled and crystallized to form a weld.
The hand-held fiber laser welding machine fills the gap of hand-held welding in the laser equipment industry, subverts the working mode of the traditional laser welding machine, and replaces the previous fixed optical path with a hand-held type. It is flexible and convenient, and the welding distance is long. It also makes the operation of laser welding in outdoor changes. Made possible.
Hand-held welding is mainly aimed at laser welding of long-distance and large workpieces. It overcomes the limitation of the worktable's stroke space. The heat-affected area during welding is small, and it will not cause work deformation, blackening, and traces on the back. The welding depth is large. It is firm and fully melted. It can not only realize thermal conductivity welding, but also continuous deep penetration welding, spot welding, butt welding, stitch welding, sealing welding, seam welding, etc.
This process overturns the working mode of the traditional laser welding machine. It has the advantages of simple operation, beautiful welding seam, fast welding speed, and no consumables. It can be perfect for welding thin stainless steel plates, iron plates, galvanized plates and other metal materials. It replaces traditional argon arc welding, stainless steel plate, iron plate, aluminum plate and other metal materials welding.
How many types of laser welding are there?
Related parameters of laser welding machine
1. Output power: The output power refers to the energy output by the laser welding machine. The higher the power, the greater the energy of the laser welding machine, which determines the working efficiency and welding depth of laser welding.
2. Pulse frequency: Pulse frequency refers to the number of effective discharges per unit time, that is, how many pulses the laser can emit per unit time.
3. Pulse energy: Pulse energy refers to the radiation energy contained in a pulse, which determines the maximum energy that the laser can output.
4. Spot diameter: The diameter of the focused spot represents the working range of the laser. The spot diameter can be measured by methods or equipment such as trepanning, knife-edge method, and CCD.
5. Welding speed: Welding speed refers to the heat input per unit time. If the welding speed is slow, the heat input will be large, which will cause the workpiece to burn through; if the welding speed is fast, the heat input will be small, and the workpiece will not be able to penetrate.
Laser welding machine classification
Classification I.
According to the welding principle, it is divided into heat conduction welding machine and laser deep penetration welding machine.
1. The heat conduction welding machine performs welding through heat conduction, and uses laser to generate heat to diffuse into the interior of the workpiece and melt to form a specific molten pool. This welding method has shallow penetration and small depth and width.
2. The laser deep penetration welding machine uses a continuous laser beam to carry out welding. The workpiece evaporates under high-power-density laser irradiation to form small holes and melts the surrounding metal. The molten metal then fills the gaps in the small holes, and then forms a weld. Seam, this welding method has a large penetration depth and a large depth and width.
Classification II.
According to the working method, it is divided into common types such as handheld welding machine, automatic laser welding machine, laser spot welding machine and galvanometer laser welding machine.
1. Handheld laser welding equipment is mostly used for manual welding and mold repair.
2. The automatic laser welding machine is suitable for automatic welding of metal workpieces.
3. The laser spot welding machine has high welding efficiency, does not need to add wire, can weld gold, silver, platinum, titanium and other materials, and can be used for precision welding of various tiny products.
4. The galvanometer laser welding machine performs welding by controlling the moving direction of the laser through the galvanometer.
Classification III.
It is divided into pulse and continuous laser welding machines according to the output energy mode.
1. The pulse laser welding machine is more suitable for spot welding and seam welding of thin-walled workpieces, and the deformation of the workpiece is small.
2. The continuous laser welding machine is more suitable for continuous sealing welding, which can be carried out continuously for a long time, and the working state is stable.
Classification IV:
According to the installed lasers, it is divided into optical fiber, YAG, and semiconductor laser welding machines.
1. The fiber laser welding machine has huge energy, stable performance and precise welding.
2. YAG laser welding machine has large spot, narrow pulse and large processing range.
3. The semiconductor laser welding machine has a long working life and requires water cooling when the power is high.
The advantages of hand-held laser welding machine
Generally speaking, the hand-held welding gun replaces the traditional fixed light path welding. Hand-held welding is understood literally: hand-held welding, it is flexible and convenient, and the welding distance is free and unlimited. Welding effect: laser welding has a large depth and firm welding; it is not easy to deform, easy to polish, and solves the problems of weld penetration, weld bumps, welding quality, etc. that occur using argon arc welding; it is also suitable for various complex welds and points of various devices weld.
1. Simple operation, can easily achieve high-quality welding results.
2. Convenient and flexible to use: Hand-held laser welding is equipped with movable pulleys, which is comfortable to hold, and can adjust the station at any time. It does not require a fixed-point station. It is free and flexible. It is suitable for various working environment scenes and occupies a small space. It is aimed at the diversification of welding products. The product shape is flexible, and the laser hand-held welding machine can fully meet the needs of this kind of production.
3. Low maintenance cost: There is no need to add welding wire when hand-held laser welding, basically no consumable costs. The life of the pump source is more than 100,000 hours, and the daily maintenance is basically free, which saves effort and worry.
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4. Wide welding range: The handheld welding head is equipped with 5m-10M original optical fiber, which overcomes the limitation of the workbench space, and can be welded outdoors and long-distance welding;
5. Multiple welding methods: Welding at any angle can be realized: overlap welding, butt welding, vertical welding, flat fillet welding, internal fillet welding, external fillet welding, etc., and can weld various complex welded workpieces and large workpieces with irregular shapes. Realize welding at any angle. In addition, it can also complete the cutting, welding and cutting can be switched freely, just change the welding copper nozzle to the cutting copper nozzle, which is very convenient.
6. Good welding effect: Hand-held laser welding is thermal fusion welding. Compared with traditional welding, laser welding has a higher energy density and can achieve better welding results. The welding area has little thermal influence, is not easy to deform, black, and has traces on the back. , The welding depth is large, the melting is sufficient, firm and reliable, and the weld strength reaches or exceeds the base metal itself, which cannot be guaranteed by ordinary welding machines.
7. The welding seam does not need to be polished: after traditional welding, the welding point needs to be polished to ensure that it is smooth and not rough. The hand-held laser welding precisely reflects more advantages in the processing effect: continuous welding, smooth and no fish scales, beautiful and no scars, and fewer subsequent polishing procedures.
8. Welding without consumables: In most people's minds, the welding operation is "left hand goggles, right hand clamp welding wire". But with a handheld laser welding machine, welding can be done easily, which reduces the cost of materials in production and processing.
9. With multiple safety alarms, the welding tip is only effective when the switch is touched when it touches the metal, and the light is automatically locked after the workpiece is removed, and the touch switch has body temperature sensing. The safety is high to ensure the safety of the operator during work.
10. Save labor cost: Compared with arc welding, the processing cost can be reduced by about 30%. The operation is simple, easy to learn, and quick to get started. The technical threshold of operators is not high. Ordinary workers can take up their posts after a short training, which can easily achieve high-quality welding results.
Application field of handheld laser welding machine
Mainly for the fixed position of large and medium-sized sheet metal, cabinets, chassis, aluminum alloy door and window frames, stainless steel wash basins and other large workpieces, such as inner right angle, outer right angle, and flat weld welding. The heat-affected area during welding is small, the deformation is small, and the welding depth is small. Large, strong welding. Widely used in the kitchen and bathroom industry, home appliance industry, advertising industry, mold industry, stainless steel products industry, stainless steel engineering industry, doors and windows industry, handicraft industry, household goods industry, furniture industry, auto parts industry, etc.
1. Cabinet kitchen and bathroom
Laser sealing welding of kitchen, bathroom and wash basin hardware;
At present, people often need to use a variety of cabinets, kitchens and bathrooms, including some stainless steel cabinets and kitchenware. Stainless steel cabinets and kitchen utensils are usually made by splicing various plates during the production process, and the plates naturally need to be cut during the production process, and most of the cutting is done with a handheld laser welding machine.
2. Stairs and elevators
In the process of making elevators and stairs, especially some corners and corners need to be welded with an easy-to-operate handheld laser welding machine to ensure that every corner can be welded in place and ensure the aesthetics of the stairs and elevators, so the evaluation is high The application of handheld laser welding machines in stair elevators is also relatively common.
3. In terms of door and window guardrail
In the process of modern home decoration, more and more stainless steel materials are used, including some stainless steel doors, windows and guardrails, and stainless steel doors, windows and guardrails also need to be welded by welding equipment in the process of building. The well-received handheld laser welding machine plays such a role to ensure that the display effect of doors, windows and guardrails will not be affected after welding.
4. Laser welding of sheet metal, chassis and water tank
5. All kinds of hardware lamp laser welding
6. Laser welding of billboards and advertising characters
To sum up, the formal handheld laser welding machine is mainly used for cabinets, kitchens, stair elevators, and door and window guardrails. In addition, the cost-effective handheld laser welding machine can ensure the welding performance due to the fast welding speed and the simple welding process and easy operation. The effect is more beautiful, so this highly evaluated handheld laser welding machine can also be widely used in many common industries such as food packaging, electronic components and jewelry.
