Fabrico rápido aditivo em produto: materiais e técnicas

Transcrição

Fabrico rápido aditivo em produto: materiais e técnicas
Liliana Pires, Martinho Oliveira
ESAN – Universidade de Aveiro
Arcos de Valdevez, 15 de outubro de 2015
fabrico rápido aditivo em produto: materiais e técnicas
outline
Part I – Additive Manufacturing Techniques
Product Development
Liquid-based additive manufacturing techniques
Solid-based additive manufacturing techniques
Powder-based additive manufacturing techniques
Part II – R&[email protected]
Glass Scaffolds by 3DP
PrintCer3D – porcelain by 3DP
TV remote control
KTM’s headlight
Product Development
additive Prototyping:
> Developed in 1980’s
> It uses a CAD model
> It is possible the creation of parts, not just models.
> Time and cost reduction (product development process)
> Almost any shape is possible to produce
Two basic additive manufacturing methods
1. Subtractive Method (material removal)
Example: CNC machining (typically works with metal or resins, including aluminum, brass, ABS,
acetal, acrylic, PC, nylon, PEEK, PVC, phenolic, teflon, UHMWPE, ultem and wood).
Advantages: wide selection of end-use materials, good dimensional control and surface finish,
and a high degree of repeatability suitable for end-use manufacture.
2. Additive method (material addition) - adds layers of material one by one to build the
solid part of a 3D object from bottom to top
(The topic of this presentation)
Additive manufacturing
. There are several ways to classify the additive additive manufacturing techniques
. The classification used in this presentation is based on the form of the starting material (or supply phase):
Liquid-based
Solid-based
Powder-based
. Liquid and powder-based techniques seems to be more promising techniques than solid-based
Liquid-based additive manufacturing techniques
. Starting material is a liquid
. About a dozen additive manufacturing technologies are in this category, examples:
Stereolithography (ST)
Solid ground curing
Polyjet
Droplet deposition manufacturing (DDM)
Robocasting
Liquid-based additive manufacturing techniques: SL/SLA®
the thickness of each layer as well as the resolution depend on the equipment used (typically 0,025 mm)
Liquid-based additive manufacturing techniques: Polyjet
accuracy 0.016 mm (high resolution)
Liquid-based additive manufacturing techniques: Robocasting
Solid-based additive manufacturing techniques
. Starting material is a solid
. Solid-based RP systems include the following processes:
Laminated object manufacturing (LOM)
Fused Filament Fabrication (FFF) / Fused deposition modeling (FDM®)
Solid-based additive manufacturing techniques: FDM/FFF
Low resolution in z axis (0.25mm)
Powder-based additive manufacturing techniques
. Starting material is a powder
. Powder-based RP systems include:
Selective laser sintering/melting (SLS/SLM)
Three dimensional printing (3DP)
Powder-based additive manufacturing techniques: 3DP
Biofabrication of glass scaffolds
Objectives
•
Characterization and development of
glass powders to be used in
regenerative medicine.
•
Inputs
Biofabrication by additive
Commercial powder
characterization (zp 140 Machine ZPrinter
Zcorporation)
Standard
model
manufacturing techniques: threedimensional printing (3DP).
Composition
14%TiO2-43%P2O5-43%CaO
(T14P43)
New
formulations
vitreous
Production
of glass frit
Milling
Post processing
Mechanical
tests; DRX;
SEM; EDS;
in vitro tests
DTA & TD;
XDR; Particle
size distribution
Printing models
(3D printing)
Sieving
(20µm<Ø≤106µm)
Particle size
distribution;
SEM; EDS, BET
CAD
model
Glass powder
T14P43
Preparation of CAD model
(mm)
Deviation (%)
• Powder: zp140
• Binder: zb56
width
height
8,03
10,78
• Powder: T14P43
Deviation (%)
• Binder: Deionezed water
width
height
(70%) + alcohol (30%)
16,60
2,68
Conditions selected for printing samples:

Glass powder formulation - T14P43 G80F20;

Binder formulation with 70% deionized water and 30% alcohol;

Thickness of printed powder layer - 0.181 mm;

Saturation level of 69% in the shell and 0% in the core;

Activating bleed compensation.
PrintCer3D: Fabrico rápido de produtos em porcelana por impressão 3D
Parceiros:
Objetivos
•
exploração da impressão tridimensional (3D) como tecnologia alternativa para o fabrico rápido de produtos em porcelana.
•
redução do tempo de manufatura
•
melhor resposta às necessidades do mercado
•
angariar novos mercados
•
fabrico de peças com geometrias complexas que não são possíveis de obter através das técnicas convencionais de fabrico
de produtos cerâmicos.
Inputs
Pó comercial (zp 140 ZPrinter)
Binder comercial (zb 60)
Composição:
Pó de Porcelana
Modelo
Padrão
Novas formulações
cerâmicas e binder
Equipamento: Zprinter 310
Principais caraterísticas:
•
•
•
•
•
Cor: monocromático
Resolução: 300 x 450 dpi
Velocidade construção eixo z: 25 mm/h
Espessura da camada: 0.089 - 0.203 mm
Área de construção: 203 x 254 x 203 mm
Resultados Parciais
TV remote control
KTM’s headlight
KTM’s headlight
• Martinho Oliveira
• [email protected]
Martinho Oliveira ([email protected]),
Escola Superior Aveiro Norte, Universidade de Aveiro
Estrada do Cercal, 449
3720-232 Oliveira de Azeméis
Tel. [+351] 256 666 960 Fax [+351] 256 666 97

Fabrico rápido aditivo em produto: materiais e técnicas

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