Laser sintering with plastics : technology, processes, and materials

Laser Sintering (LS) with plastics is one of the most promising additive manufacturing technologies: it is currently regarded as the process most likely in the future to permanently cross the border between prototyping and the production of functional parts. This step is challenging because it means...

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Bibliographic Details
Main Author Schmid, Manfred, 1958 August 31- (Author)
Format Electronic eBook
LanguageEnglish
Published Cincinnati : Munich : Hanser Publishers ; Hanser Publications, [2018]
EditionFirst edition.
Subjects
Laser sintering.
Plastics > Molding.
elektronické knihy
electronic books
Online AccessFull text
ISBN9781569906842
156990684X
9781569906859
1569906858
9781523120208
1523120207
9781569906835
Physical Description1 online resource

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TOC from ObalkyKnih.cz
Table of Contents:
  • Intro
  • Foreword
  • About the Author
  • Contents
  • 1 Introduction
  • 1.1 Manufacturing Technology
  • 1.2 Additive Manufacturing
  • 1.2.1 Areas of Application/Technology Driver
  • 1.2.2 Polymer-Based AM Method
  • 1.2.3 Technology Maturation
  • 1.2.4 Laser Sintering (LS)
  • 1.3 References of Chapter 1
  • 2 LS Technology
  • 2.1 Machine Technology
  • 2.1.1 Machine Configuration
  • 2.1.2 Temperature Control
  • 2.1.2.1 Heat Sources
  • 2.1.2.2 Surface Temperature in the Build Cavity
  • 2.1.2.3 Laser Energy Input, Andrew Number (An)
  • 2.1.3 Powder Feed
  • 2.1.3.1 Powder Supply
  • 2.1.3.2 Powder Application
  • 2.1.4 Optical Components
  • 2.2 Machine Market
  • 2.2.1 3D Systems (USA)
  • 2.2.2 Electro Optical Systems - EOS (Germany)
  • 2.2.3 Aspect (Japan)
  • 2.2.4 Farsoon (China)
  • 2.2.5 Comparison of Commercial LS Machines
  • 2.2.6 Other Machinery
  • 2.3 References of Chapter 2
  • 3 LS Process
  • 3.1 Process Chain
  • 3.1.1 Powder Preparation
  • 3.1.2 Data Preparation and Build Job
  • 3.1.3 Build Process
  • 3.1.3.1 Heating
  • 3.1.3.2 Process Cycle
  • 3.1.3.3 Parts and Build Chamber Parameters
  • 3.1.3.4 Strategy of Part Irradiation
  • 3.1.3.5 Cool Down and Part Extraction
  • 3.1.4 Process Errors
  • 3.1.4.1 Deformation of the Part
  • 3.1.4.2 Surface Defects: Orange Peel
  • 3.1.4.3 Other Process Errors
  • 3.2 Quality Assurance
  • 3.2.1 General Quality Actions
  • 3.2.2 Test and Comparison Parts
  • 3.2.3 Quality Costs
  • 3.2.4 PPM Concept (EOS)
  • 3.2.5 State of Standardization
  • 3.3 References of Chapter 3
  • 4 LS Materials: Polymer Properties
  • 4.1 Polymers
  • 4.1.1 Polymerization
  • 4.1.2 Chemical Structure (Morphology)
  • 4.1.3 Thermal Behavior
  • 4.1.4 Polymer Processing
  • 4.1.5 Viscosity and Molecular Weight
  • 4.2 Key Properties of LS Polymers
  • 4.2.1 Thermal Properties
  • 4.2.1.1 Crystallization and Melting (Sintering Window)
  • 4.2.1.2 Heat Capacity (cp) and Enthalpies (DHk, DHm)
  • 4.2.1.3 Thermal Conductivity and Heat Radiation
  • 4.2.1.4 Modeling the Processes in the Sintering Window
  • 4.2.2 Rheology of the Polymer Melt
  • 4.2.2.1 Melt Viscosity
  • 4.2.2.2 Surface Tension
  • 4.2.3 Optical Properties
  • 4.2.3.1 Absorption
  • 4.2.3.2 Transmission and (Diffuse) Reflection
  • 4.2.4 Particles and Powder
  • 4.2.4.1 Powder Rheology
  • 4.2.4.2 Particle Size Distribution
  • 4.2.4.3 Powder Density
  • 4.3 References of Chapter 4
  • 5 LS Materials: Polymer Powders
  • 5.1 Production of LS Powders
  • 5.1.1 Emulsion/Suspension Polymerization
  • 5.1.2 Precipitation from Solutions
  • 5.1.3 Milling and Mechanical Grinding
  • 5.1.4 Coextrusion
  • 5.1.5 Overview: Production of LS Powders
  • 5.1.6 Other Powder Manufacturing Processes
  • 5.1.6.1 Spray Drying
  • 5.1.6.2 Drop Extrusion
  • 5.1.6.3 Melt Spinning
  • 5.1.6.4 RESS with Supercritical Gases
  • 5.2 Evaluation of the Powder State
  • 5.2.1 Thermal Analysis
  • 5.2.1.1 Differential Scanning Calorimetry (DSC)
  • 5.2.1.2 Thermogravimetry (TGA)
  • 5.2.2 Melt Viscosity

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