A review on advances in 3D metal printing

This is review paper on advances in 3D metal printing. There are many 3D printing methods are available for different type materials. The 3D part is manufactured directly from 3D virtual part which is drawn in software like catia, solidworks, UGNX and etc. and the manufacturing is almost same in all type of machine which is built up of material layer by layer approach. But in this paper we will see the advances in 3D metal printing and the melting process used in metal is difficult and different than plastic. Additive manufacturing features freedom to part for part consolidation, part complexity, part design, lightweighting and design for application in 3D printing like automobile application, aerospace, marine, oil and gas applications. The techniques of 3D printing are explained in this report. But 3D manufacturing is not as good as conventional machining since the parts are a week in strength in Z-direction. There are some factors which reduce 3D part strength like a surface finish, porosity, etc. are discussed in this report and also one case study is prepared for factors affecting the part. (C) 2020 Elsevier Ltd. All rights reserved.