Surface Finish Processes of Additively Manufactured Metal Parts

Year 2020, Volume: 12 Issue: 1, 45 - 55, 16.06.2020

Tolgahan Ermergen , Fatih Taylan

Abstract

Additive Manufacturing (AM)
offers the possibility of manufacturing of parts with complex geometries which
are not possible to be manufactured by conventional machining processes. Since
it is likely to manufacture geometry-free parts as a single element, which have
similar mechanical properties compared to their counterparts manufactured by
machining or plastic deformation methods, AM methods grown very popular
recently.

Although AM methods have lots of
advantages, there are also some disadvantages concerning surface quality. Parts
with low fatigue strength due to their bad surface quality can not offer high
performance under dynamic load conditions. For this reason, additively manufactured
parts should be subjected to surface finish processes in order to eliminate
surface roughness.

In this work, surface finish
processes that are applied to additively manufactured metal parts, for the
purpose of surface roughness elimination thus fatigue strength increase, have
been explained.

Keywords

Additive Manufacturing, Surface finishing

EKLEMELİ İMALAT İLE İMAL EDİLMİŞ METAL PARÇALARIN YÜZEY BİTİRME İŞLEMLERİ

Abstract

Eklemeli İmalat (Eİ) yöntemleri,
talaşlı imalat gibi geleneksel yöntemlerle imalatı mümkün olmayan karmaşık
geometrili parçaların imalatında kolaylık sağladığı için son yıllarda oldukça
popüler hale gelmiştir. Zira bu yöntemler sayesinde söz konusu karmaşık
geometrili parçaların yekpare olarak imalatının mümkün olması, ayrıca imal
edilen parçaların mekanik özelliklerinin talaşlı imalat ya da plastik şekil
verme yöntemleri ile imal edilmiş versiyonlarına oldukça yakın olması da
Eklemeli İmalat yöntemlerinin yaygınlığını pekiştirmiştir.

Eklemeli İmalat yöntemleri her ne
kadar birçok avantaja sahip olsa da, başta düşük yüzey kalitesi olmak üzere
bazı dezavantajları da mevcuttur. Düşük yüzey kalitesi neticesinde yorulma
dayanımları olumsuz etkilenen parçalar, dinamik yüklerin söz konusu olduğu
çalışma ortamlarında arzu edilen performansı sergileyememektedir. Bu sebeple,
eklemeli imalat ile imal edilmiş parçaların imalat sonrası ikinci işlemlere
tabii tutularak yüzeylerindeki pürüzlülükler giderilmelidir.

Bu çalışmada, eklemeli imalat ile
imal edilmiş metal parçaların yorulma dayanımını arttırmak için, imalat sonrası
uygulanan yüzey kalitesini arttırıcı bitirme işlemleri anlatılmaktadır. 

Keywords

Eklemeli İmalat, Yüzey bitirme işlemleri

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