Handheld laser welding machines are portable fiber laser delivery machines capable of welding various metal materials within seconds. They comprise a main unit that houses the laser source and amplifier, connected to a handheld gun-like unit called the laser welding head.
Portability and Versatility
This machine is compact and lightweight. They are ideal for heavy equipment and hard-to-reach parts that may be difficult for heavy welding machines. Furthermore, the size of the machine does not limit its capability. Because of their weight, they are suitable for a variety of applications. They are a valuable tool for manufacturing and repairing operations.
Efficiency
The technologies and software that come with handheld laser marking systems are advanced. When comparing the machine to the welding machine, there is higher production efficiency, precision, speed, and cost efficiency. Furthermore, handheld laser welding machine do not generate much waste.
These portable devices consume relatively low energy. This is an additional means to reduce a company's operating costs while contributing to environmental sustainability.
Small Heat-Affected Zone
They have a small heat-affected zone, which ensures that the welded joint is as accurate and has little heat impact on areas adjacent to the welding joint. The laser beam of a handheld welding machine is adequately focused on the material joint, which limits the amount of heat that gets transferred. This property makes them applicable for use in the manufacturing industries. They are the go-to machine to weld small and delicate pieces that are heat sensitive.
User-friendly
The machines have an intuitive user interface, making them easier for people of different technical minds. With a single button push, the handheld laser welding machine can adjust the laser parameters to suit your project needs. This reduces the chance of occupational hazards and promotes operator satisfaction.
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No matter what kind of flap disc/ wheel forming, cutting and grinding wheel & packaging machinery, based on our extensive experience, we can manufacture it. In particular, we could provide control system for the whole production line, which makes the final selection abrasive machine can be distinguished from the vast majority of machine on the market.
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Laser source
The laser source is the most important component of a handheld laser welding machine, and it directly affects the machine's final weld area and life span. Both emit high-power laser beams and can weld thicker materials. They are more compact and provide higher welding speeds.
Optical Cavity
The optical cavity surrounds the laser source. It consists of two reflective mirrors placed above and below the gain medium. The mirror surfaces serve as an amplifying system for the laser beam. As the laser beam bounces back and forth, they increase the length of the gain medium.
Furthermore, the degree of reflectivity varies between both mirrors. The first mirror reflects all light into the laser cavity. However, the mirror on the opposite side permits a small beam to exit the cavity to interact with the material.
Cooling System
Laser welding is heat intensive. If heat is not removed or appropriately dissipated, it deforms thin materials. As a result, a cooling system is a critical part of the machine.
Experts use two main types of cooling systems when welding: liquid cooling and air cooling. Liquid cooling uses coolants, including water and other coolant fluids, which are transported directly to the parts generating heat. This provides a more efficient cooling medium.
Power Supply
The electrical system provides the power that runs a handheld laser welding machine. The electrical current gets transformed into laser light that interacts with the materials. Controlling and monitoring the power density is important during welding as any change (even minute) can irreversibly damage the laser optics.
Furthermore, some handheld laser welding machines can be battery-operated. The battery type may vary based on the design of the welding equipment.
Protective Housing
The laser welding machines must have protective housing to guarantee the operator's safety. It ensures that the laser radiation in contact with the operator is within the MPE level.
Additionally, protective housing combines shielding windows, physical barriers, ventilation, and safety interlocks. They adequately contain the welding area and laser beam delivery system while granting the welder access to the entire welding operation.
Welding Head
The welding head is responsible for delivering a highly concentrated laser beam to the welding joint for welding to take place. It comprises a focusing lens, shielding gas, and a protective nozzle which should come from highly durable material. It is also possible to adjust the machine parameters laser welding head to control heat input and distribution during the welding.
Gas Supply System
The gas supply system ensures a smooth run of this heat-conduction welding process. This system provides gas, including helium and argon, that protects the welding area from unintended reactions with atmospheric content. When the atmospheric mixture reacts with the molten material, nitrogen embrittlement and oxidation can occur. The gasses also prevent weld contamination by removing impurities from the material surface.
Factors to Consider When Choosing a Handheld Laser Welding Machine
Power Output
The power output of a laser welding machine is one of the most important factors to consider. It determines the machine's ability to weld different materials and thicknesses. Higher power output allows for deeper penetration and faster welding speeds. Common power ranges for handheld laser welders are between 500W and 3000W.
● For Thin Materials: A lower power output (500W-1000W) may be sufficient.
● For Thicker Materials: Higher power output (1500W-3000W) is recommended.
Laser Source
The laser source is the core component of the welding machine, which is responsible for generating the laser beam. There are two primary types of laser sources:
● Fiber Lasers: Known for their efficiency, durability, and ability to produce a consistent beam quality. Fiber lasers are ideal for precision welding tasks and are the most common type used in handheld machines.
● CO2 Lasers: Typically used for non-metal materials like plastics and certain ceramics. However, CO2 lasers are less common in handheld devices due to their bulkier setup and limited material compatibility.
For most metal welding applications, fiber lasers are the preferred choice due to their high performance and adaptability.
Cooling System
Laser welding generates significant heat, and an efficient cooling system is necessary to prevent overheating and ensure consistent performance. There are two types of cooling systems:
● Air Cooling: Suitable for lower-power machines, air cooling is simpler but less effective for continuous, high-intensity welding tasks.
● Water Cooling: More effective at dissipating heat, making it ideal for higher power machines and prolonged use.
For industrial applications, a water-cooled system is usually more reliable and efficient.
Welding Speed
Welding speed is another crucial factor, especially in production environments where time is money. The speed at which a handheld laser welding machine operates is influenced by its power output, the material being welded, and the machine's overall design.
● High-Speed Welding: Important for high-volume production settings.
● Adjustable Speed: Look for machines that offer adjustable welding speeds to accommodate different tasks and materials.
Beam Quality
The quality of the laser beam affects the precision and finish of the weld. Beam quality is determined by beam spot size, consistency, and stability. A high-quality beam produces cleaner, more accurate welds with minimal post-processing required.
Ease of Use and Ergonomics
Given that handheld laser welders are operated manually, their design and ease of use are critical. Look for machines with:
● Ergonomic Handles: Comfortable to hold and operate for extended periods.
● User-Friendly Interface: Easy-to-use controls and settings adjustments.
● Lightweight Design: Portable enough for various applications without causing operator fatigue.
Safety Features
Laser welding involves high-intensity light and heat, so safety is a top priority. Essential safety features to look for include:
● Protective Housing: To shield the operator from accidental exposure to the laser beam.
● Safety Interlocks: Automatically disable the laser when the device is not in use or if there's a malfunction.
● Eye Protection: Built-in or provided with the machine, protecting against harmful laser radiation.
Material Compatibility
Different handheld laser welding machines are compatible with various materials. Ensure the machine you choose can handle the specific materials you work with, such as:
● Metals: Stainless steel, aluminum, titanium, copper, etc.
● Plastics: Certain laser welders can also handle plastic materials.
● Composite Materials: Some machines are designed for advanced composites used in aerospace and automotive industries.
Maintenance and Durability
Consider the long-term maintenance requirements of the machine. Fiber lasers generally require less maintenance compared to CO2 lasers. Durability is also essential, especially if the machine will be used in harsh environments. Look for features like:
● Dust and Water Resistance: Machines with IP ratings are more durable in challenging environments.
● Service and Support: Choose manufacturers that offer good after-sales support, including maintenance services and spare parts availability.
What Are The Precautions For The Safe Use Of Handheld Laser Welding Machines?
When using a hand-held laser welding machine, the operator must undergo strict training before working on the job. The laser cannot hit people or surrounding objects, otherwise it may bring very serious consequences. , such as burns, or fires, this is very dangerous, everyone must pay special attention to safety.
Although the welding process of the handheld laser welding machine is operated against the workpiece, it will still produce high-brightness reflections. Therefore, the operator must be equipped with special protective light goggles to protect their eyes. If they do not wear goggles, It is not allowed to operate a handheld laser welding machine.
When using a handheld laser welding machine, regularly check the wiring part of the power wiring. At the positions of the input side and the output side, as well as the wiring parts of the external wiring and the wiring parts of the internal wiring, etc., it is necessary to carefully check whether there is any looseness of the wiring screws. If rust is found, the rust should be promptly removed. Remove to maintain good electrical conductivity and prevent electric shock accidents.
Put on the insulating ferrule. The use of a handheld laser welding machine also requires an insulating ferrule, so that the gas can flow out evenly, otherwise the welding torch may burn out due to a short circuit.
How to Maintain the Handheld Laser Welding Machine?
Regular inspection
Operators should regularly check the following aspects:
1. Check whether the cooling fan rotates smoothly when the power is turned on;
2. Check for gas leakage;
3. Check whether there is looseness or peeling between the welding wire connector and the insulation;
4. Check whether the welding cable and each wiring part have abnormal heating.
Internal dust cleaning
Since the handheld laser welding machine is air-cooled, it is easy to suck the surrounding dust into the body. The operator should regularly use compressed air to blow off the dust inside the welding machine. Especially in transformers of equipment, gaps between coils, power semiconductors, etc.
Parts Repair or Replacement
Long-term use will deform the shell of the machine due to collisions, and the internal parts will also wear out. Therefore, during regular inspections, the operator should replace defective parts in time. The shell and damaged insulation parts should be comprehensively repaired. If there is rust, the operator should make the welding machine conduct electricity well by removing the rust. These measures can ensure better performance of the laser welding machine.
Company Introduction
Zhengzhou HG Abrasive Tech.Co.,Ltd. is a high-tech enterprise that independently designs,develops,produces and sell the automation abrasive flap disc production line.
It was established in 2015 and its wholly owned subsidiary is Zhengzhou Kaway Automation Tech.Co.,Ltd.. With total assents of 80 million yuan and more than 150 employees, the company Chinese market ranks the second .
HG Abrasive attaches great importance to product technology research and development for the beginning. It has successfully developed seven series of abrasive flap disc machines .Our production equipment is advanced and management is customized.
Good products must have good services. HG Abrasive has a complete marketing service network, with nearly 100 existing marketing and service personnel, which can meet customer needs in the first time.
After many years development, our productions have spread all over the country. And are exported to Mexico ,South Korea, Japan, Russia, Thailand, Vietnam, Ukraine and some other countries.
If you are looking for any related products and machines ,or want to become the sole agent in your country ,please contact us at ZHENGZHOU HG ABRASIVE TECH.CO.LTD.. We warmly welcome new and old customers to visit our company . We look forward to working with you.
