High-Power Laser Material Processing for Engineers

✍ Scribed by Joerg Volpp

• Publisher: CRC Press
• Year: 2024
• Tongue: English
• Leaves: 178
• Edition: 1
• Category: Library

✦ Synopsis

This book focuses on the mechanisms of how laser light is produced, guided, and focused for materials processing, and these are explained in an easy-to-understand language for practical use. It emphasizes a basic understanding of the principles necessary to run lasers in a safe and efficient way and provides information for quick access to laser materials processing for laser users. The book exhibits the following features:

• Provides simple explanations and descriptions of complex laser material interaction mechanisms to help readers understand relevant effects during laser beam irradiation of materials.

• Explains the main high-power laser materials processing methods, giving hints to get started with the processing and how to avoid imperfections.

• Focuses on high-power laser applications that are explained in an accessible, descriptive way with practical explanations and minimal formulas.

• Teaches how to measure laser beam characteristics and how to install and handle laser equipment correctly.

• Gives practical advice on typical equipment arrangements and parameter ranges.

This practical handbook serves as a guide for students studying production technologies to learn about laser processes, and for engineers who want to start working with laser processes safely and quickly.

✦ Table of Contents

Cover
Half Title
Title Page
Copyright Page
Contents
Preface
About the Author
Chapter 1: Introduction: The Laser Story in Short
Chapter 2: Theoretical Background
2.1. Laser Theory
2.1.1. What Is Light?
2.1.2. Laser Principle
2.1.3. Laser Active Medium
2.1.4. Laser Resonator
2.2. Laser Machines
2.2.1. Laser Designs
2.2.2. CO2 Lasers
2.2.3. Solid-State Lasers
2.2.4. Diode Laser
2.3. Characteristics of Laser Beam
2.4. Beam Guiding and Beam Shaping
2.4.1. Fiber Optics for Beam Guiding
2.4.2. Beam Shaping Elements
2.4.3. Laser Beam Focusing
2.4.4. Laser Beam Shaping
2.5. Laser Beam Energy Transfer
2.5.1. Phenomenological Overview
2.5.2. Absorption of Metals
2.5.3. Heat Transfer in Materials
2.6. Material Properties
2.6.1. Surface Tension
2.6.2. Phase Changes
2.6.3. Diffusion
2.7. Process Monitoring
2.7.1. Process Emissions
2.7.2. Process Sensors
Chapter 3: Laser Material Processes
3.1. Overview
3.2. Safety
3.3. Surface Hardening
3.3.1. Overview
3.3.2. Martensite Hardening
3.3.3. Laser Martensite Hardening
3.3.4. Precipitation Hardening
3.3.5. Beam Shaping for Surface Treatment
3.3.6. Practical Issues
3.3.7. Laser Shock Peening (for Hardening)
3.4. Laser Forming
3.5. Laser Beam Marking
3.6. Laser Beam Brazing
3.7. Laser Beam Welding
3.7.1. Heat Conduction Welding
3.7.2. Laser Deep Penetration Welding
3.7.3. Weldability
3.7.4. Laser-Hybrid Welding
3.7.5. Imperfections and Defects
3.8. Laser Beam Cutting
3.8.1. Introduction
3.8.2. Process Principle
3.8.3. Process Modes
3.8.4. Process Parameters
3.8.5. Quality Criteria and Imperfections
3.9. Laser Drilling
3.10. Laser Alloying and Dispersing
3.11. Laser Cladding
3.12. Laser Beam Additive Manufacturing of Metals
3.12.1. Principles of Laser Additive Manufacturing
3.12.2. Directed Energy Deposition
3.12.3. Laser Powder Bed Fusion
3.12.4. Powder Sheet Additive Manufacturing
3.12.5. Part Disassembling Using Laser Beams
3.12.6. When to Use AM?
3.13. Research Topics
3.13.1. Laser Developments
3.13.2. Laser Processes
3.14. Summary and Outlook
Note
Chapter 4: Symbols and Abbreviations
Symbols
Abbreviations
References
Index