Katsaus lisäävän valmistuksen (aka 3D-tulostus) mahdollisuuksiin ja kustannuksiin metallisten tuotteiden valmistuksessa: Case jauhepetitekniikka
Piili, Heidi; Hirvimäki, Marika; Väistö, Tapio; Nyamekye, Patricia; Pekkarinen, Joonas; Salminen, Antti (2014-12-05)
Editors: Piili, H., Hirvimäki, M., Väistö, T., Nyamekye, P., Pekkarinen, J., Salminen, A., Katsaus lisäävän valmistuksen (aka 3D-tulostus) mahdollisuuksiin ja kustannuksiin metallisten tuotteiden valmistuksessa: Case jauhepetitekniikka, Research Report 40, Faculty of Technology, Department of Mechanical Engineering, Lappeenranta University of Technology, Finland, 2014, 31 p.
Additive manufacturing, or commonly known as 3D printing, appears to public audience as trend issue in newspapers and media. This technology is actually invented in middle of 80´s and it has been developed since that. Additive manufacturing is used in fabrication of functional parts in Germany and in USA. For example, parts for jet engine of air planes and medical devices are produced from metallic powder by assist of additive manufacturing. Actually, one method for laser additive manufacturing of metallic materials is invented in Finland and it has been also developed in Finland but this field of industry started later to grow in Germany. Additive manufacturing is at the moment one of most interesting manufacturing technology globally, and it is believed to change many things in manufacturing industry. This technology does not only attract manufacturing industry but it provides also new possibilities for information technology, medical applications, fabrication of jewellery and designers. 3D printing is huge opportunity for Finland also as our country has strong know-how in information and communication technology and also in specialization of manufacturing of demanding industrial devices. One of the largest possibilities in additive manufacturing is related to changes of supply chains. Small companies and organizations can apply this technology to their manufacturing and create even new products. It is also estimated that additive manufacturing has larger effect on ways to fabricate things and on supply chains than it has ever seen in any technological break-through. This is why additive manufacturing is very often referred as third industrial revolution. When costs of 3D printing are observed, it important to understand that only amount of melted powder matters, not the complexity of used geometry. This is where additive manufacturing varies from conventional manufacturing techniques. Fabrication of light-weight structures has been traditionally expensive when additive manufacturing this is actually decreasing manufacturing costs. Height of workpiece is one of major factor to increase manufacturing costs in 3D printing. This is why fabrication of many pieces at print is recommended. And it is beneficial to also manufacture at one print workpieces which vary a lot from each other. Conventional manufacturing technologies are too slow for demands of nowadays clients; they are very inflexible, especially when customer-orientated, small series production is considered. As trend in these days are towards this, it sets also high demands for capability and flexibility of manufacturing industry. Additive manufacturing is very suitable for small series production and conventional manufacturing technologies have many advantages in in case large-scale fabrication.
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