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What Is A Laser Welder? How Does It Work?

By Published On: September 12, 2022Categories: Laser Welding1004 wordsViews: 35

What is A Laser Welder?

Laser Welder is an eco-friendly power welding tool with handheld laser welding gun, CNC controller, or single-arm robot to join pieces of metals or thermoplastics. Laser beam provides a concentrated heat source, which is used for spot welding, butt joint, lap joint, lap edge, lap, T butt, seam welding, narrow welds, deep welds, and kissing weld with high welding rates. The process is frequently used in high volume applications with automation, which is based on keyhole or penetration mode welding.

Laser Welders are engine driven welders used for a variety of applications from welding very small parts together commonly used by manufacturing businesses in the engineering, medical and electronics industries, through to welding thicker materials in the automotive and aerospace industries. Laser welding is a versatile, low cost way of achieving high quality spot welds for different materials and thicknesses.

A Laser Welder is also known as laser welding machine, laser beam welding machine, laser beam welder, laser welder machine, laser beam welding equipment, laser beam welding gun, laser beam welding tool, seam welding machine, laser bonding machine, laser brazing machine, laser joining machine, laser soldering machine.

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How Does A Laser Welder Work?

Simply put, laser welding is a process in which lasers are used to melt the material on the surface of a workpiece, allowing it to be joined to another workpiece made of the same material. Laser welding is typically done for either metals or thermoplastics. Different types of lasers have also been used for welding, with older applications using solid-state (like Nd: YAG) or gas lasers (like CO2 lasers) are widely used nowadays.

A laser is merely a highly concentrated beam of light that delivers a vast amount of power. The high power density of lasers allows them to melt the material of the workpiece in a controlled manner. By subjecting the material to a high-powered laser beam, the molecules in its surface gain enough energy to get excited and gain more fluid-like properties.

When excited molecules of the same material come into contact and concurrently move to lower excitation states, they revert to being solids and develop a bond at the molecular level.

Laser welding (as with other laser-based technologies) remained almost exclusively used in laboratories and research institutes until sometime in the late 1990s. During this time, the concept of additive manufacturing – particularly 3D printing – was starting to gain popularity.

Although the technology for 3D printing using plastic resins or filaments had already been developed, there were not many viable ways for an equivalent process to be applied to metals. Along came laser welding, allowing for the rapid and highly automated joining of powdered metal as raw material. The popularity of 3D printing also gave a boost to laser welding, giving this previously experiment technology a niche in the modern manufacturing world.

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Advantages of Laser Welder 

Laser welding has a variety of unique advantages over traditional welding processes, such as:

  • Higher accuracy and precision. Laser welding offers a high degree of accuracy and precision. These qualities make it possible to weld even the smallest parts together without causing damage or excessive thermal distortion to them.
  • Better consistency. Laser welding allows for the creation of consistent and repeatable welds, which helps improve manufacturing efficiency by reducing scrap rates.
  • Lower risk of distortion. Laser welding technology is a contact-free joining process that uses low levels of heat, which minimizes the potential for thermal and mechanical distortion.
  • Greater weld speeds. Laser welding is a much faster process enabling greater production throughput.
  • Broader welding capabilities. The laser welding process can accommodate multiple weld joint configuration. From autogenous to non-autogenous. From thin to thick gauge materials. It also can accommodate dissimilar welding materials, galvanized metals, and even magnetized materials.
fiber-laser-welding-machine-price

Handheld Laser Welder Price

Handheld laser welding machine features 1000W, 1500W, or 2000W fiber laser beam for welding joints of butt, edge, corner, tee, and lap. The handheld manual laser welder is used for welding carbon steel, stainless steel, aluminum, brass, copper, iron, silver, gold, and more tube & sheet metals. The portable handheld fiber laser welding machine will take over the traditional argon arc welding, MIG & TIG welding, and electric welding for metal joints.

Handheld Laser Welder Cost:

The average cost of a handheld laser welding machine is around $7,980 depending on the fiber laser powers based on the data from Google, Amazon, and Sinbadlab. A cheap portable laser welder with 1000W fiber laser source is priced from $5,500 for beginners with hobbyists in home use. An affordable 1500W handheld fiber laser welding machine cost start at $7,800 for small business with low cost. The top rated portable fiber laser welder machine with 2000W handheld laser welding gun will cost $10,500 for commercial use in industrial manufacturing.

Handheld Laser Welder Price

Application of Handheld Laser Welder

The common applications highlight many of its benefits. These applications include:

  • Precision Parts Welding: accuracy and minimal heat generation allow for welding of thin or delicate metal components.
  • Medical Devices: as the process doesn’t create material contact or splatter, it ensures consistent cleanliness for medical devices that need to remain sanitary.
  • Limited Access: since laser welding doesn’t need to touch the part, it can weld remotely from over a foot away from the part. This allows it to reach hard-to-weld places that traditional processes cannot.

Laser welding processes can also be used in heavy industrial settings, for parts like industrial oven doors, drive train gears, exhaust heat shields, stainless steel appliances and many more. The applications listed above highlight the accuracy, low heat and high performance this solution provides.

Laser welding may not work for every application, but for some applications it’s a necessity due to the nature of the part. In the right setting, this form of robotic welding can deliver productivity and quality beyond more traditional robotic welding processes.

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