Fibre Laser Cutting

In: Science

Submitted By joshald
Words 1998
Pages 8
Fibre Laser Cutting

Introduction
In the Fibre Laser Cutting experiment we were faced with a High Power Laser and required to design a series of experiments to determine how certain parameters affect laser cutting

Aim
To gain a basic understanding of the operation of High Power Class 4 Industrial Lasers in regards to the cutting of sheet metal, and how varying parameters affects the cuts finish.

Objectives 1. Learn basic components of a high power (Class 4) laser system and the basic safety issues involved

2. Learn principles and characteristics of laser cutting

3. Design and perform an experiment to investigate how three process parameters; Laser power, Type of gas and gas flow rate affect cut quality by the analysis of samples

4. Learn basic procedure of sample preparation and analysis using an optical microscope and digital camera system for the examination of the samples

5. Reach evidence based conclusion as to how the three varied process parameters affect laser cut quality

Background Information and Safety Procedures

A Laser is a device the emits light through a process of optical amplification, this is generated by transitions between high and low energy states in atoms, ions and molecules (species) through various media in the infrared, visible and ultraviolet portions of the electromagnetic spectrum. A Laser works on the principle of light amplification where stimulated emission causes a photon to collide with another excited species, there by causing it to release its photon prematurely; the photons travel in the same direction until the next collision thereby building a stream of increasing density. Laser cutting works by directing the output of a high-power laser at the material to be cut, the laser either melts, burns or vaporises away or is blown away by a jet of gas. Gases possess a…...

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