What is Laser Cold Welding Machine
A laser cold welding machine is welding equipment that uses a fibre laser to connect sections of metal or thermoplastics. The laser beam fibre supplies a focused heating system used for the spot weld, edge of the cord, joint of the lap, seam, kissing welding button, deep welding, high levels narrower solders. In automation applications such as the automotive industry, the process is also used in high volumes.
Benefits of Laser Cold Welding Machine
The required amount of heat can be reduced to a minimum, the metallographic change range of the heat affected zone is small, and the deformation due to heat conduction is also the lowest.
The welding process parameters of single pass welding of 32mm plate thickness have been qualified, which can reduce the time required for welding of thick plates and even save the use of filler metals.
No need to use electrodes, no worry about electrode contamination or damage. And because it is not a contact welding process, the wear and deformation of the machine can be reduced to a minimum.
The laser beam is easy to focus, align, and guided by optical instruments. It can be placed at an appropriate distance from the workpiece, and can be re-guided between the tools or obstacles around the workpiece. Other welding methods are limited by the above space restrictions. Unable to play.
The workpiece can be placed in a closed space (under vacuum or internal gas environment under control).
The laser beam can be focused on a small area and can weld small and closely spaced components.
The range of weldable materials is wide, and various heterogeneous materials can also be joined to each other.
It is easy to automate high-speed welding, and it can also be controlled by digital or computer.
When welding thin or thin-diameter wire, it will not be as susceptible to melting back as arc welding.
Not affected by the magnetic field (arc welding and electron beam welding are easy), can accurately align the weldment.
Two metals with different physical properties (such as different resistance) can be welded.
No vacuum or X-ray protection is required.
Fast speed, large depth and small deformation.
If welding by perforation, the depth-to-width ratio of the weld bead can reach 10:1.
The device can be switched to transmit the laser beam to multiple workstations.
Related Products
1. Max. 6,000 watts of laser power
2. Welding speed up to 50 m/min
3. Working area 300 mm x 300 mm or customized
4. Laser wavelength 1.06 μm 5. Spot size 0.2 mm - 2 mm
1. High-power laser system capable of delivering up to 200 joules of energy
2. High-precision microscope and CCD camera system for a clear view of the welding process
3. User-friendly control interface for easy setup and operation
1. High-power laser system capable of delivering up to 200 watts of laser power
2. Fiber optic laser beam for precise welding
3. High-precision scanning system for accurate welding
4. Designed for repairing small areas and precise welding
5. Equipped with a microscope for clear visualization of the welding area
Quality Assurance
Guosheng Laser obtained the certification of ISO9001:2015, ISO14001:2015, ISO45001:2018.
Cutting-edge Technology
Guosheng Laser has strong technical resources, abundant research and development forces, advanced production technology, fast delivery cycle, flexible technical services, provides customers with cost-effective products and services.
Customer Service
The company offers excellent customer service and support, making it easy for customers to resolve any issues they may have with the product.
The Difference And Advantages Of Laser Welding Machine And Laser Cold Welding Machine
The difference in principle:
The principle of the multi-function laser cold welding machine is to use the charging capacitor to discharge in a period of 10-3 to 10-1 seconds and an ultra-short time of 10-6 to 10-5 seconds. The contact part between the electrode material and the workpiece will be heated to 8000°C ~ 10000°C in an instant, and the molten metal in the plasma state transitions to the surface of the workpiece in a metallurgical manner. The laser cold welding machine mainly has the functions of depositing, sealing, filling and other defects on the surface of metal workpieces such as wear, scratches, pinholes, cracks, defect deformation, hardness reduction, trachoma, damage and other defects.
The laser welding machine uses high-energy laser pulses to locally heat the material in a small area. The energy of the laser radiation diffuses into the interior of the material through heat conduction, and the material is melted to form a specific molten pool to achieve the purpose of welding. According to its working mode Divided into laser mold welding machine, automatic laser welding machine, laser spot
The difference between application functions:
The laser cold welding machine mainly has the functions of depositing, sealing, filling and other defects on the surface of metal workpieces such as wear, scratches, pinholes, cracks, defect deformation, hardness reduction, trachoma, damage and other defects.
Laser welding machine
The laser welding machine is mainly aimed at the welding of thin-walled materials and precision parts. It can realize spot welding, butt welding, stitch welding, sealing welding, etc. After welding, the substrate will not be deformed, annealed, undercut or residual stress, and its metal will not be changed. The tissue state, the repairing precision is high, the coating thickness is from a few microns to a few millimeters, and only needs to be polished.
Laser Cold Welding Machine Parts and Functions
Laser welding is an efficient and precise welding method that uses a high-energy density laser beam as a heat source. It is one of the significant applications of laser material processing technology.
In the 1970s, laser welding was mainly used for welding thin-walled materials and low-speed welding. The welding process belongs to the heat conduction type, that is, the laser radiation heats the surface of the part and the heat from the surface diffuses internally through heat transfer. By controlling parameters such as laser pulse width, energy, peak power and repetition frequency, the part melts and forms a specific molten pool.
Due to its unique advantages, laser welding has been successfully applied to the precision welding of micro and small parts.
A complete laser cold welding machine mainly comprises five parts.
Part I: Laser Welding Host
The laser welding host mainly produces a laser beam for welding and comprises the power supply, laser generator, optical path part, control system and other components.
In some cases, low-power lasers are typically integrated into the automatic worktable of the laser welding system.
Part Ii: Cooling System
The cooling system provides the cooling function for the laser generator, which is generally equipped with a 1 to 5 HP water circulation chiller.
Part Iii: Automatic Laser Welding Worktable Or Motion System
★The laser welding system is used to realize the automatic welding function by moving the laser beam along the welding track as per specific requirements. There are typically three forms of motion control:
- The part moves and the laser head is fixed.
- The laser head moves and the part is fixed.
- Both the laser head and the part move.
The whole system compiles the motion control program using CNC programming to regulate the movement of the work table according to the requirements. The simplified programming system offers several advantages, such as ease of operation, no need for professional technology or educational basis, and quick support and understanding.
★Common countertop systems on the market include:
- Manipulator movement system;
- 2D bench;
- 3D workbench;
- Four-axis articulation bench;
- Gantry welding bench;
- Cantilever bench, etc;
Both can realize precise control of the welding movement.
Part Iv: Tool Attachment
In the laser welding process, a laser welding fixture is generally employed to clamp the welded part and allow it to be loaded, unloaded and positioned repeatedly. This makes automatic laser welding more manageable.
Therefore, the luminaire is one of the essential equipment in laser welding production. Especially during batch production, proper fixture design will have a direct impact on production efficiency and yield.
Part V: Observation System
Generally, the laser cold welding machine must be equipped with an observation system that can perform real-time microscopic observations on the workpiece. This observation system is used to facilitate accurate positioning when compiling the welding program and inspecting the welding effect during the welding process.
Common observation systems include a CCD display system or a microscope.
The Usage Scenarios Of Laser Cold Welding Machine
Aerospace And Aviation: Laser cold welding machines are used in the aerospace and aviation industries to repair or join thin-walled components, such as fuel tanks, engine components, and hydraulic lines.
Automotive: Laser cold welding machines are used in the automotive industry to repair or join aluminum and other non-ferrous materials, such as oil coolers, radiators, and transmission lines.
Electronics: Laser cold welding machines are used in the electronics industry to bond components and wires without using heat or solder, which can damage delicate electronic components.
Jewelry Making: Laser cold welding machines are used in the jewelry making industry to join precious metals without using heat or solder, which can damage the metals and their finishes.
Medical Devices: Laser cold welding machines are used in the production of medical devices, such as surgical instruments and implants, to create strong, precise, and biocompatible joints.
Research And Development: Laser cold welding machines are used in research and development to join metals without altering their properties, allowing for precise testing and analysis of the material's characteristics.
Welding Of Dissimilar Materials: Laser cold welding machines can be used to join dissimilar metals, such as aluminum to copper or titanium to stainless steel, which can be difficult or impossible to weld using traditional methods.
8 Maintenance Tips for Laser Cold Welding Machines
Optics Cleaning: The lenses and mirrors in your laser cold welding machine are crucial for directing and focusing the laser beam. Dust, debris, and residues can significantly affect the beam's quality and, consequently, the weld's precision.
Cleaning Schedule: Establish a cleaning schedule based on usage. For high-usage environments, daily or weekly cleaning may be necessary. For less frequent use, a monthly check may suffice. Use lens cleaning solutions and lint-free wipes to clean optics gently. Always follow the manufacturer's recommendations for cleaning products and techniques.
Inspection: Regularly inspect optics for signs of wear or damage. Cracks, discoloration, or coatings peeling off can indicate issues that need addressing. Replace damaged optics promptly to avoid affecting the machine's performance.
Cooling System Importance: The cooling system prevents overheating of the laser source and other components, which is essential for maintaining consistent performance and avoiding damage.
Check Coolant Levels: Regularly check coolant levels and top up as needed. Low coolant levels can lead to overheating and potential damage.
Inspect for Leaks: Look for signs of coolant leaks around the cooling system. Address leaks immediately to prevent damage and ensure efficient cooling.
Clean and Replace Filters: Many cooling systems have filters that need regular cleaning or replacement. Check the manufacturer's guidelines for the recommended cleaning schedule.
Temperature Monitoring: Keep an eye on temperature gauges and alarms. Any unusual temperature readings should be investigated immediately to prevent overheating.
Laser Source Alignment: Proper alignment of the laser source is critical for consistent weld quality. Regularly check and adjust alignment according to the manufacturer's specifications. Misalignment can lead to poor welds and increased wear on components.
Inspect and Replace Components: Laser sources have components such as flashlamps, diodes, and mirrors that may need periodic replacement. Follow the manufacturer's recommendations for replacement intervals and procedures.
Check Power Supply: Ensure that the power supply to the laser source is stable and within the specified range. Fluctuations or power issues can affect the performance of the laser source.
Software Updates: Keep the machine's software up to date to benefit from performance improvements and new features. Regularly check for updates from the manufacturer and install them as needed.
Inspect Wiring and Connections: Regularly inspect the wiring and connections within the control system for signs of wear or damage. Loose or frayed wires can cause malfunctions or errors.
Backup and Restore: Periodically back up your machine's settings and configurations. In the event of a system failure, having a backup can save time and prevent disruptions.
Debris Removal: Keep the worktable clean and free from debris, such as metal shavings or dust, which can affect the quality of the weld and potentially damage the machine.
Inspect for Wear and Tear: Regularly inspect the worktable for signs of wear or damage. Address any issues promptly to avoid affecting the machine's accuracy and performance.
Alignment: Ensure the worktable is properly aligned and calibrated. Misalignment can lead to inconsistent welds and potential damage to the machine.
Lubrication: Laser cold welding machines have moving parts such as rails, gears, and bearings that require lubrication. Proper lubrication reduces friction and wear, ensuring smooth operation.
Lubrication Schedule: Follow the manufacturer's recommendations for lubrication intervals and types of lubricants. Over-lubrication or using the wrong type of lubricant can cause problems, so be precise in your application.
Inspect for Leaks: Check for any signs of lubricant leaks or buildup, which can affect the machine's operation. Clean up any excess lubricant and ensure proper application.
Scheduled Maintenance: Develop and follow a preventive maintenance schedule based on the manufacturer's recommendations and your machine's usage. Regular maintenance helps identify and address potential issues before they become major problems.
Record Keeping: Keep detailed records of all maintenance activities, including cleaning, inspections, and repairs. This documentation helps track the machine's condition and can be valuable for troubleshooting and future maintenance planning.
Training: Ensure that all operators and maintenance personnel are adequately trained in the machine's maintenance procedures. Proper training reduces the risk of errors and improves overall maintenance effectiveness.
Beam Quality Problems: If you notice issues with the quality of the laser beam, such as inconsistent welds or decreased performance, check the optics, alignment, and cooling system. These components often affect beam quality.
Overheating: Persistent overheating issues may indicate problems with the cooling system or an imbalance in the machine's workload. Address coolant levels, leaks, and system performance to resolve overheating issues.
System Errors: If the control system displays errors or malfunctions, consult the manufacturer's troubleshooting guide. Check wiring, software, and power supply as potential causes.
Our Factory
Xi'an Guosheng Laser Technology Co., Ltd. is a high-tech enterprise specializing in R&D, manufacturing and sales of automatic laser cladding machine, high-speed laser cladding machine, laser hardening machine, laser welding machine, laser cleaning machine and laser 3D printer. Xi'an Guosheng Laser Technology Co., Ltd. was founded in 2015(Its wholly-owned subsidiary: Shaanxi Guosheng Laser Technology Co., LTD.). Guosheng Laser has established Xi'an Aerospace R&D and Design Center, Weinan Production Base and Xianyang Production Base. The company processes a workshop area of 2,000 m2, the quantity of employees is 30, including 5 senior research staff and engineers, which is capable of providing a complete set of solutions for laser additive manufacturing technology with integrated structure and function.
Our Certification
Guosheng Laser obtained the certification of ISO9001:2015, ISO14001:2015, ISO45001:2018.
Asked Questions
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