Metal 3D. manufacturing. Kimmo K. Mäkelä Post doctoral researcher

Transkriptio

1 Metal 3D manufacturing Kimmo K. Mäkelä Post doctoral researcher

2 Collaboration! 2 Oulun yliopisto

3 Definition - What does Additive Manufacturing mean? Additive manufacturing is a manufacturing process through which three-dimensional solid objects are created. It enables the creation of physical 3-D models of objects using a series of additive or layered development framework, where layers are laid down in succession to create a complete, 3-D object. The technology was formerly known as 3D printing. Additive Manufacturing (AM) is now the standardized expression, due to that it gives the wider perspective and real meaning of the technology used 3

4 Manufacturing methods. Selective Laser Melting (SLM) 4

5 SLM method 2 5

6 Power Bed Fusion (PDF) 6

7 Beam deposition processes (PD) 7

8 Some material properties 8

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10 Conventional designing methods can be used. Possibilities to structures that can not be manufacturing by milling, turning, injection moulding, etc. - flow chanels inside parts - honeycomb and cell parts - sharp inside edges - moving parts in one part - very difficult structures Allways machinable afterwards 10

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12 The Rule: use AM if you have designed it to use AM features 12

13 Issues on AM manufacturing Errors on 3d drawingsand especially stl files Just push the button and the AM machines makes it. Simple. (A BIG mistake) When designing think supports Why everyone talks about what happens at the machine, when the problems are before and after the machine? Machine all ways does what you ask it to do. The before and after are more difficult issues. 13

14 Other possibilities Look alike models and toys is yesterday. Now real parts and assemblys Silicon mould masters Prototypes Moulds Jigs Small parts, small series Manufacturing plants allready exixts, especially on car manufactures, aeroplanes and medical sector. Jewellery industry comes fast Parts that are impossible to manufacture with conventional methods 14

15 Mechanisms MUCH easier or plastics Clearences different on different manufacturing methods XY an Z axis clearences are different Designing of Supports! Test it 15

16 Difficult geometries For need Features have a function Angles and curvature optomized If using internal channels, remerber to think about how to remove support and other unneccesary material 16

17 Supports and.. Some issues more Materials and their fast development Porousness, especially on softer materials Supports and removing them Parts almost all ways need some kind of after treatment The constant need of more accuracy The more designers et al lear about AM, the more difficult the parts are coming. Yes ; there is a limit! The old school. You are toy makers. Who teaches AM design? Still some disbelief in industry 17

18 The thruth.. 18

19 Beneficiarrys Flexible Manufacturing costs in general A lot of possibilities after part has been made Accuracy Versatile Complex, difficult and almost impossible features and structures Unmanned production Freedom to design! 19

20 We have done this for thousands of hours. It has been a strucle beyond the understanding. But we still do it. And mainly we even like to do it! Jari and Kimmo 20 Oulun yliopisto

21 In collaboration! 21 Oulun yliopisto

22 Thank You! Contact: Kimmo K. Mäkelä 22 Oulun yliopisto