A diode laser is the most suitable tool for metal deposition welding. Flexibility, low distortion, and a quick processing time are some of the advantages of using diode lasers in metal deposition. Laser metal deposition with diode lasers offers many other benefits. In this article, we will explore what laser metal deposition is and the application and benefits of laser metal deposition with diode lasers.
What is Laser Metal Deposition?
Laser metal deposition (LMD) is also called Laser deposition welding. It is an additive manufacturing procedure in which metal is applied to an existing component. The laser creates a melt pool on the surface of the metal object into which metal powder is injected using a gas stream.
In other words, laser metal deposition is a process of direct energy deposition used to produce or repair high-value parts and components. As a result, a thin layer of the base material is melted by the laser heat source under a controlled environment to ensure a metallurgical bond is created between the coating and the base material.
Practically, laser metal deposition is used to repair mold tool surfaces and high-value parts such as aero-engine components and military vehicles. Also, it is used in the tipping of turbine blades with protective coatings and surfacing of oil and gas drilling components.
Application of Diode Lasers in LMD Process
To begin with, diodes are the simplest semiconductors capable of performing a wide range of functions. Laser diodes is a semiconductor device that helps emit coherent radiation produced in the visible or infrared spectrum. That is, they can convert electrical current into light.
Laser diodes produce light that contains one color that can travel substantial distances into a narrow pathway. It tends to have waves that are of the same frequency and wavelength.
Laser diodes are the most common source of laser (Light Amplification by Stimulated Emission of Radiation) and are available in several stores. However, you can get the best high-power diode lasers from Laserline.
Laserline produces and sells diode lasers for industrial applications. Their diode lasers can be found in various applications such as metal processing, welding, brazing, hardening, softening, or repair of coatings. Furthermore, their lasers have been established for plastic welding, additive manufacturing (metal 3D print), or welding of fiber composites.
Benefits of Laser Metal Deposition with Diode Lasers
Quick cooling rate
Rapid cooling rates are provided by Laser Deposition Technology, as well as low, controlled heat input, minimal heat effect zones, minimal stress from distortion caused by the deposits, and minimal dilution.
Innovative
Using LMD, work-piece properties can be targeted for improvement by combining or refining materials, lowering manufacturing costs. You can combine a thermally insulating material with a conductive layer or coat metal with materials that withstand high temperatures, salt water, or chemicals to give softer metals a hard, high-quality surface.
Reduce overall cost
Although laser deposition won’t increase the lifespan of your components, it will cut manufacturing costs overall. Faster production times and lower costs are two of the many advantages of laser metal deposition. It can create a fine micro-structure with little distortion and less heat transfer into the substrate material than many conventional techniques.
Laser metal deposition lowers tooling costs and material waste (improved buy-to-fly ratio). For significant AM components, it provides a sizable working envelope. It can produce functionally graded parts, has near-net and net-shape capabilities, allows for fully customized parts to suit individual needs, and is efficient for fabrication and repair.
Stronger mechanical bonds
Laser Deposition Technology offers affordable solutions for manufacturing and repairing. The metallurgical bond produced by the LDT process is significantly stronger than the mechanical bond created by spay welding or plating.
Conclusion
Laser metal deposition with diode laser helps reduce processing time and increases efficiency and reliability, especially for expensive parts of aero-engine components.
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