Product Description
Product Introduction
The handheld fiber laser welding machine produced by our factory adopts a new generation of fiber laser generators, high-power chillers, and intelligent wire feeders. We have also independently developed a laser welding system and dual swing welding heads, filling the gap in the handheld welding industry in the laser industry.
Working principle
The essence of laser welding is the thermal interaction process between laser energy and materials, mainly divided into two modes:
Working principle
Principle: When the energy of the laser beam is low, it only melts the surface layer of the material. The heat diffuses into the interior through heat conduction, forming a shallow and wide weld seam (depth ≤1mm).
Features: Suitable for thin materials (such as 0.1-2mm metal sheets), stable welding process, and small heat-affected zone.
Deep penetration welding (small hole welding)
Principle: A high-power-density laser beam instantly vaporizes the material, creating a "small hole" several millimeters deep. The laser energy directly acts on the deep layer of the material through the small hole. After the molten pool cools down, a weld seam with a high depth-to-width ratio is formed (the depth can reach over 10mm).
Features: Fast welding speed (up to several meters per minute), large penetration depth, suitable for thick plates and high-strength welding (such as automotive frames, aviation structural components).
Main types and characteristics
According to the type of laser and application scenarios, laser welding machines can be classified into the following categories:
Fiber laser welding machine
Light source: Fiber laser (wavelength 1064nm, near-infrared light).
Features:
Energy concentration: High beam quality (M²≤1.1), the focused spot diameter can be below 20μm, suitable for precision welding.
Flexible transmission: By guiding light through optical fibers, it can be flexibly adapted to automated robotic arms to achieve complex path welding.
High efficiency: The electro-optical conversion efficiency is over 30%, and the energy consumption under the same power is only 1/3 of that of CO laser.
Application scenarios: Welding of power batteries (such as lithium battery tabs), electronic components (such as USB interfaces), medical devices (such as heart stents).
2. CO laser welding machine
Light source: CO gas laser (wavelength 10.6μm, far-infrared light).
Features:
High power output: The single-mode power can reach over 20kW, making it suitable for thick plate welding (such as in ships and pressure vessels).
Material compatibility: It has certain welding capabilities for non-metals (such as ceramics and glass), but its welding efficiency for metals is lower than that of fiber lasers.
Application scenarios: Steel industry (steel plate splicing), aerospace (aluminum alloy structural components), diamond tool welding.
3. Disc laser welding machine
Light source: Disc solid-state laser (wavelength 1030nm).
Features:
High beam quality: Suitable for high-demand deep penetration welding, with a weld depth-to-width ratio up to 10:1.
Continuous and stable output: The average power can reach several kilowatts, suitable for large-scale industrial production.
Application scenarios: Welding of automotive body-in-white, repair of aero engine blades.
4. Pulsed laser welding machine
Light source: Solid-state laser (such as Nd:YAG) or fiber laser, which outputs energy in pulsed mode.
Features:
Controllable heat input: Single-pulse energy is adjustable (0.1-100J), suitable for extremely thin materials (such as 0.05mm foil) or heat-sensitive materials (such as thermistors).
Fast welding speed: The repetition frequency can reach several thousand Hz, making it suitable for high-speed spot welding (such as the soldering of electronic component pins).
Application scenarios: Precision watch parts, microelectronic packaging, jewelry welding.
5. Ultraviolet laser welding machine
Light source: Ultraviolet laser (wavelength 355nm, ultraviolet light).
Features:
Cold working characteristics: Non-thermal effect welding, almost no thermal deformation, suitable for flexible electronics (such as FPC flexible boards) and transparent materials (such as PMMA plastic).
High precision: Spot diameter ≤50μm, capable of welding micron-level structures (such as MEMS devices).
Application scenarios: Sealing of medical catheters, bonding of optical lenses, semiconductor packaging.
Selection and process key points
Key factors for selection
Material type and thickness
Thin plate (< 1mm) : Pulsed laser or fiber laser (low power).
Thick plates (> 5mm) : High-power CO or disc laser (with preheating or double-sided welding required).
High-reflective materials (such as copper and aluminum) : Choose high-power fiber lasers (> 3000W) or green lasers (532nm, with higher absorption rates).
Welding quality requirements
Airtight welding (such as sensors) : Preferred pulsed laser spot welding, combined with helium gas leak detection.
Aesthetic requirements (such as for jewelry) : Select optical fibers or ultraviolet lasers with fine light spots, and the weld width should be less than 0.2mm.
Demand for production efficiency
Mass production: Integrated robot + galvanometer scanning welding system to achieve multi-station synchronous operation.
Key points of process optimization
Spot positioning accuracy: The welding position is calibrated in real time using a visual guidance system (such as a CCD camera), with an error of ≤±0.02mm.
Protective gas control: The gas flow rate should be matched with the welding speed (for example, when the welding speed is 1m/min, the argon gas flow rate is approximately 15L/min) to avoid the introduction of oxidation by turbulence.
Post-weld treatment: In high-demand scenarios, annealing (stress relief) or surface polishing is required (such as post-weld X-ray flaw detection of aviation components).
Product advantages
1. The welding speed is fast, 3-10 times faster than traditional argon arc welding, saving 3 welders per machine.
2. Multiple welding modes to choose from: point, horizontal bar, hollow circle, concentric circle, triangle, double triangle; The width of the weld seam can reach 5 millimeters.
3. Easy to operate, no training required, beautiful welds, fast speed, no welding marks, no discoloration, no need for later polishing.
4. The system constantly monitors the operating status, monitors and collects the operating status of the laser, chiller, and control board.
5. Perfectly replace traditional argon arc welding and electric welding in welding metal materials such as thin stainless steel plates, iron plates, aluminum plates, galvanized plates, etc.
6. The welding gun is lightweight, small in size, and ergonomically designed for comfortable grip.
7. The fully sealed structure has built-in water and air channels, with strong anti-interference ability.
Laser welding wire feeder
main features
1.This wire feeder is an automatic driven mechanized wire feeder device with a lightweight design and simple operation.
2.The control system adopts computer control, high-precision fully enclosed low-speed motor, and dual drive wire feeding structure to make wire feeding more powerful without jamming, with high wire feeding accuracy and good repeatability.
3.Mainly used for automatic wire feeding in laser handheld welding.
4.Can send 0.8mm, 1.0mm, 1.2mm, and 1.6mm welding wires.
5.Wire feeding speed: 0-60mm/min
6.Wire feeding length: 5 meters
7.Suitable for carbon steel welding wire, stainless steel welding wire, aluminum welding wire
Safety and operation norms
Laser protection
The equipment should be equipped with a closed protective cabin, and the operators need to wear laser protective glasses of the corresponding wavelength (such as infrared protective glasses for fiber lasers).
Electrical safety
Ensure good grounding, avoid exposing high-voltage components, and regularly inspect the circuit system.
Ventilation and heat dissipation
High-power equipment should be equipped with a cooling system (such as a chiller), and the working environment should be kept well-ventilated to prevent the laser from overheating.
Product Parameters
| Project name |
Parameter |
| working voltage |
AC220V/50Hz |
| Input power |
7.0KW |
| wavelength |
1070nm |
| Fiber Length |
10m |
| Welding speed |
0-120mm/s |
| Welding material |
Stainless steel/carbon steel/aluminum |
| Swinging method |
Two modes |
| Swing width |
0.1-5mm |
| ambient temperature |
-10ºC~+40ºC |
| relative humidity |
≤95%No condensation |
| Welding gas |
Argon or nitrogen: purity ≥ 99.9%, protecting lenses and workpieces from oxidation. |
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Basic Info
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