Additiv tillverkning : Ett nytt alternativ inom tillverkningsteknik

• Main Author: Nestrell, Annéa
• Format: Others
• Language: Swedish
• Published: Umeå universitet, Institutionen för tillämpad fysik och elektronik 2015
• Online Access: http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-104932

GE Healthcare wants to investigate whether additive manufacturing would be an alternative method in their workshops in the Umeå plant. Additive manufacturing is called 3D printing in everyday language and manufactures details by building them up layer by layer in an automated machine. The purpose of this work is therefore to investigate how mature additive manufacturing methods are and how they could be used at GE. The work has been divided into three parts. The first section investigates how additive manufacturing would work in the production workshop at GE. The production workshop mainly consists of CNC manufacturing. The other part that is being investigated is how additive manufacturing would work in The Tool Workshop at GE. The Tool Workshop produces toolsets and fixtures for the the production at GE. The Tools Workshop today uses both manual manufacturing as lathes, milling machines and drills, and CNC manufacturing. The last part of the work investigates how additive manufacturing as a production method would work at GE. What are the environmental and health risks that may be applicable, the post-processing methods that are relevant, and how quality assurance should be made on additive manufactured parts. The study results show that additive manufacturing would be a great compliment in both workshops. In the production workshop additive manufacturing could be especially beneficial for details that do not have any specific requirements, such as surface tolerances or regulatory requirements. Additive manufacturing would also be useful as a backup method of details that are not delivered on time or otherwise not functioning as intended. The Tool Workshop could create additive manufacturing tools and fixtures with complex geometries and in one piece quantities. This would be benificial because it’s much faster to produce these kinds of details in an additive manufacturing than with CNC manufacturing or manual manufacturing. The results of the study also show that the health risks of additive manufacturing is material- related and that carefulness should be applied not to inhale powders, nano-particles or fumes from the material. The waste products may be either come in the form of breaking away parts or emissions. Emissions should then be handled in the same way as emissions are managed today. What post-processing method that is current for additively manufactured parts depends on the material to be used. Before choice of materials are made the manufacturer should keep this in mind. Since additive manufacturing can create complex parts measure instument that can verify the details are necessary. One proposal of instrument is a laser scanner. The largest delimitations made during the work are: The project does not consider geometries of details. The methods mentioned are the main methods that exist. In Tools Workshop assumed that from a specific additive manufacturing method. In the investigating part post processing, quality-, safety-, and environmental aspects in the use of additive manufacturing are investigating two different additive manufacturing methods.