Which gas is used as laser medium in laser beam machining?

The commonly used gases are He-Ne, argon and Co2. 2. Solid State Lasers: The media of the solid state lasers are produced by doping a rare element into a host material.

What is laser beam machining process?

Laser beam machining (LBM) is a form of machining that uses heat directed from a laser beam. This process uses thermal energy to remove material from metallic or nonmetallic surfaces.

Which type of laser are used at LBM?

Types of lasers used for laser beam machining: Gas lasers such as CO2 and excimer lasers, along with solid-state lasers such as Nd:YAG and YAG lasers and femtosecond lasers, are some of the most popular lasers.

Which type of laser are used in laser beam machining Mcq?

Which types of lasers are used in Laser beam machining? Explanation: Laser may be in continuous wave (CW) or in Pulsed mode (PM) for machining in LBM. 8.

Why LBM is used?

Laser beam machining (LBM) is an excellent material processing technique to machine a wide range of advanced materials, especially difficult-to-machine advanced ceramics and composites. LBM can be used to process these materials with intricate shapes and sizes with greater precision even difficult to reach surfaces.

What are the limitations of Laser beam machining?

Laser Beam Machining Disadvantage:

• The overall efficiency of Laser machining is very low.
• It is limited to thin sheets.
• The life of the flash lamp is short.
• It is not possible to remove a large number of metals.
• The machined holes are not round and straight.
• Not able to drill too deep holes.
• It’s having a high cost.

Can diamond be machined on LBM?

Laser beam machining is independent of electrically conductive nature of the workpiece. It can machine wide range of materials from plastics to diamonds.

What are the limitations of LBM?

LBM has the limitations of high initial cost, short life of flash lamp, safety procedures to be followed strictly, over-all low efficiency (0.3% to 0.5%), very low material removal rate, not able to drill too deep holes, machined holes not round and straight, and no possibility of machining some plastics which burn or …

What is the advantage of Laser beam machining?

The main advantages of laser beam machining are ease of automation for complex cutting patterns, absence of tool wear and breakage, ability to cut at shallow angles, and rapid cutting rates. As it is a noncontact process, energy transfer between the laser and the material occurs through irradiation.

What is a laser beam machining?

A laser beam machining is a non-conventional machining method in which the operation is performed by laser light. The laser light has maximum temperature strikes on the workpiece, due to high temp the workpiece gets melts.

What is UV-A laser-beam machining?

In laser-beam machining (LBM), the source of energy is a laser, which focuses optical energy on the surface of the workpiece. The highly focused, high-density energy melts and evaporates portions of the workpiece in a controlled manner. It is widely used in cutting sheet and drilling holes. UV-A LBM is a combination of LBM and ultrasonic vibration.

What is high voltage power system used in laser beam machining?

A high voltage power system is used in laser beam machining. It will give initial power to the system after that reaction starts in a laser that will machine the material. There is a high voltage supply so that pulses can be initiated easily

What are the limitations of laser beam machining?

LBM cannot be effectively machined highly reflective material as well as transparent material due to low ablation rate. To improve the performance of LBM process and to overcome the above mentioned limitations laser beam machining can be assisted by vibration.