What’s Laser Welding?
Laser welding, or laser beam welding, is a new type of welding method with non-contact process that makes metal parts to be melt and joined together. The beam provides a concentrated heat source, allowing for narrow, deep welds and high welding rates. It can realize spot welding, butt welding, overlap welding, and sealed welding, etc.
Laser welding is a much more accurate manufacturing process and welds can be as small as one hundredths of a millimetre. Small pulses of heat are used to create the weld which leads to a higher quality finish which is stronger providing a better depth to width ratio.
Another distinct advantage of laser welding over other methods is that lasers can weld a greater variety of metals such as high strength stainless steel, titanium, aluminium, carbon steel as well as precious metals like gold and silver.
With laser welding, welds are much more accurate and finish is superior as is strength. The manufacturing process is therefore excellent for fine components and it can be used in areas where there is limited access. Lasers enable precision and quality where required for fine components.
Summary of Laser Welding Advantages
● Aesthetically better weld finishes
● More suited to high value items such as jewellery
● Great for inaccessible places
● Ideal for solenoids and machined components
● Perfect for medical devices where weld quality is vital for hygiene and precision
● Better weld quality for a variety of metals and metal depths
● No concerns for weld weaknesses due to minimal distortion
● Work-pieces can be handled almost immediately because heat transference is low
● Overall improved productivity
Typical Fields Application of Laser Welding Are:
● Mould and tool construction / repair
● Thin sheet / precious steel production
● Automobile manufacturing industry
● Lithium battery industry
● Machinery Manufacturing Industry
● Furniture industry
● Sheet metal processing industry
● Electronic communication industry
● Repair in machine construction – turbine blades, machine components, housings
● Medical technology – medical part welding and production
● Sensor production (micro-welding, sheath tube cutting)
● Precision Engineering
● Dental Laboratories
● Jewellery Repair and Production
Fortune Laser develops and supplies laser welding machines to a wide range of industry sectors with affordable prices and professional services.
Fortune Laser Handheld Fiber Laser Welding Machine
The handheld fiber laser welding machine, also called Portable Handheld Laser Welder, is a new generation of laser welding equipment, which belongs to non-contact welding. The operation process does not require pressure. The 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.
Continuous Laser Welding Machine
The Fortune Laser continuous optical fiber CW laser welding machine is consist of welding body, welding working table, water chiller and controller system etc. This series of equipment is 3-5 times of the speed than the traditional optical fiber transmission laser welding machine. It can precisely weld flat, circumference, line type products and non-standard customized production lines.
Jewelry Mini Spot Laser Welder 60W 100W
This 60W 100W YAG mini spot laser welder, also knew as portable jewelry laser soldering machine, is specially developed for laser welding of jewelry, and mainly used in perforating and spot welding of gold and silver jewelry. The laser spot welding is an important aspect of laser process technology application.
Robotic Fiber Laser Welding Machine
Fortune Laser robot laser welding machine is composed of a dedicated fiber laser head, a high-precision capacitance tracking system, a fiber laser and an industrial robot system. It is an advanced equipment for flexible welding of metal sheets of different thicknesses from multiple angles and multiple directions.
The combination of laser welding and robots has the advantages of automation, intelligence, and high flexibility, and can be used for welding complex surface materials.
Choose Traditional Welding or Laser Welding?
Welding is a fabrication process that employs heat to join two or more separate pieces. Currently, industry professionals utilize both traditional arc-based welding, spot welding, and laser welding methods for their operations. Both process variations offer unique characteristics that make them suitable for different cases.
There are several traditional welding methods still in use today, including:
● Tungsten inert gas (TIG) welding. This arc welding method employs the use of a non-consumable tungsten electrode to heat the workpiece and melt the filler (if present) to produce the weld.
● Metal inert gas (MIG) welding. This arc welding method uses a consumable wire component—serving as both the electrode and the filler material—to produce the weld.
● Spot-welding. This welding method utilizes a pair of electrodes to clamp workpieces together and pass an electric current between them to create the weld.
Advantages of Traditional Welding:
Laser welding offers several advantages over traditional welding methods. However, traditional welding processes remain an enduring fabrication solution for numerous industries for the following reasons:
● They are understood by the manufacturing community due to legacy operations.
● They accommodate less precise and accurate workpiece fit-up.
● They are easier to automate.
● They come with lower initial investment costs.
● They can be manually implemented.
Advantages of Laser Welding:
Compared to traditional welding methods, laser welding has the following advantages:
● Less heat. In laser welding operations, the heat affected zone (HAZ) is much smaller and the total heat input is much lower than traditional welding operations.
● Lower risk of macro deflections and distortions. The above qualities also translate to a lower distortion stemming from thermal input. Less heat means less thermal stress, resulting in less damage to the workpiece.
● Faster processing times. Despite its higher initial tooling investment, laser welding can often prove more cost-effective than traditional welding due to its faster processing speed. Faster production speeds also mean greater production capacities, resulting in quicker turnaround.
● Greater suitability for thin metals. Due to its tailorable spot size, laser welding is an excellent joining method for thin or delicate metal parts. The spot size can be specifically designed to only melt the proper amount of metal to achieve the weld, thus minimizing the occurrence of heat-induced internal stresses, distortions, and defects.
You can choose the welding methods based on your detailed application and project requirements.