Hybrid Metal 3D Printing for Selective Polished Surface

2021 ◽  
Vol 1027 ◽  
pp. 136-140
Author(s):  
Sze Yi Mak ◽  
Kwong Leong Tam ◽  
Ching Hang Bob Yung ◽  
Wing Fung Edmond Yau
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Surface Finishing ◽  
Polished Surface ◽  
Post Processing ◽  
One Stop ◽  
Metal 3D Printing ◽  
Critical Challenge ◽  
Metal Additive

Metal additive manufacturing has found broad applications in diverse disciplines. Post processing to homogenize and improve surface finishing remains a critical challenge to additive manufacturing. We propose a novel one-stop solution of adopting hybrid metal 3D printing to streamlining the additive manufacturing workflow as well as to improve surface roughness quality of selective interior surface of the printed parts. This work has great potential in medical and aerospace industries where complicated and high-precision additive manufacturing is anticipated.

Process Monitoring of 3D Metal Printing in Industrial Scale

2018 ◽  
Author(s):  
Mohammadhossein Amini ◽  
Shing Chang
Keyword(s):  
3D Printing ◽  
Process Monitoring ◽  
Numerical Study ◽  
High Reliability ◽  
Factors Affecting ◽  
Main Metal ◽  
Metal Printing ◽  
Metal 3D Printing ◽  
Using Data

Metal 3D printing is one of the fastest growing additive manufacturing (AM) technologies in recent years. Despite the improvements and capabilities, reliable metal printing is still not well understood. One of the barriers of industrialization of metal AM is process monitoring and quality assurance of the printed product. These barriers are especially much highlighted in aerospace and medical device manufacturing industries where the high reliability and quality is needed. Selective Laser Melting (SLM) is one of the main metal 3D printing methods where it is known that more than 50 parameters are affecting the quality of the print. However, the current SLM printing process barely utilize a fraction of the collected data during production. Up to this point, no study to the best of our knowledge examines the correlation of factors affecting the quality of the print. After reviewing the current state of the art of process monitoring for metal AM involving SLM, we propose a method to control the process of the print in each layer and prevent the defects using data-driven techniques. A numerical study using simulated numbers is provided to demonstrate how the proposed method can be implemented.

What Is Design for Additive Manufacturing (DfAM)?

2020 ◽  
pp. 164-186
Author(s):  
Seung Hwan Joo ◽  
Sung Mo Lee ◽  
Jin Ho Yoo ◽  
Hyeon Jin Son ◽  
Seung Ho Lee
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Design Optimization ◽  
Advanced Manufacturing ◽  
Design For Additive Manufacturing ◽  
Printing Technology ◽  
Actual Production ◽  
Manufacturing Design ◽  
Metal 3D Printing ◽  
Is Design

In order to use 3D printing technology as a sanction, it is necessary to optimize topology, component unification, and reduce weight need for advanced manufacturing design. In the case of metal 3D printing, it is necessary to manage deformation and defects in the process cause of using laser, and support generation and design optimization must be accompanied for efficiency. Currently, design progresses through simulation before actual production in AM field. This chapter explores design in additive manufacturing.

On the verge of disruption: rethinking position and role – the case of additive manufacturing

2019 ◽  
Vol 34 (5) ◽  
pp. 1093-1105 ◽  
Author(s):  
Christina Öberg ◽  
Tawfiq Shams
Keyword(s):  
Supply Chain ◽  
Additive Manufacturing ◽  
3D Printing ◽  
Design Methodology ◽  
Secondary Data ◽  
Point Of View ◽  
Disruptive Technology ◽  
Content Type ◽  
Business Cases ◽  
Metal 3D Printing

Purpose With the overarching idea of disruptive technology and its effects on business, this paper focuses on how companies strategically consider meeting the challenge of a disruptive technology such as additive manufacturing. The purpose of this paper is to describe and discuss changes in positions and roles related to the implementation of a disruptive technology. Design/methodology/approach Additive manufacturing could be expected to have different consequences for parties based on their current supply chain positions. The paper therefore investigates companies’ strategies related to various supply chain positions and does so by departing from a position and role point of view. Three business cases related to metal 3D printing - illustrating sub-suppliers, manufacturers and logistics firms - describe as many strategies. Data for the cases were collected through meetings, interviews, seminars and secondary data focusing on both current business activities related to additive manufacturing and scenarios for the future. Findings The companies attempted to defend their current positions, leading to new roles for them. This disconnects the change of roles from that of positions. The changed roles indicate that all parties, regardless of supply chain positions, would move into competing producing roles, thereby indicating how a disruptive technology may disrupt network structures based on companies’ attempts to defend their positions. Originality/value The paper contributes to previous research by reporting a disconnect between positions and roles among firms when disruption takes place. The paper further denotes how the investigated firms largely disregarded network consequences at the disruptive stage, caused by the introduction of additive manufacturing. The paper also contributes to research on additive manufacturing by including a business dimension and linking this to positions and roles.

Additive manufacturing (AM) of piercing punches by the PBF method of metal 3D printing using mold steel powder materials

2019 ◽  
Vol 33 (2) ◽  
pp. 809-817 ◽  
Author(s):  
Rui Li ◽  
Yong Seok Kim ◽  
Hoang Van Tho ◽  
Young Jin Yum ◽  
Won Jun Kim ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Steel Powder ◽  
Powder Materials ◽  
Metal 3D Printing

scholarly journals Book review – Standards, quality control, and measurement sciences in 3D printing and additive manufacturing

2017 ◽  
Vol 3 (2) ◽  
Author(s):  
Tuan Anh Tran
Keyword(s):  
Quality Control ◽  
Additive Manufacturing ◽  
3D Printing ◽  
Fast Pace ◽  
Control Procedures ◽  
3D Printed

There is a gap between 3D Printing’s fast pace of development and the acceptance of 3D Printing technologies by other industries and applications. This hesitation comes mostly from unanswered questions about the consistency, reproducibility, and quality of 3D printed products. Although the list of excellent examples demonstrating its potential keeps expanding, a wide and thorough adoption of the technology requires crucial, yet currently missing elements including consensus standards, quality control procedures, and measuring methodologies. Progress in developing these elements, however, has been rather limited.

scholarly journals The Influence of Different Slicer Software on 3d Printing Products Accuracy and Surface Roughness

2021 ◽  
Vol 12 (2) ◽  
pp. 371-380
Author(s):  
Sally Cahyati ◽  
◽  
Haris Risqy Aziz
Keyword(s):  
Surface Roughness ◽  
Additive Manufacturing ◽  
3D Printing ◽  
3D Model ◽  
High Surface ◽  
3D Printer ◽  
Layer By Layer ◽  
Additive Manufacturing Technology ◽  
Printing Machine

Rapid Prototyping (RP) is a manufacturing process that produces a 3D model CAD to be a real product rapidly by using additive manufacturing technology. In this case, the product will print layer by layer uses a 3D printer machine. The 3D printer requires slicer software to convert CAD data into data that a 3D printer machine can read. Research is done to analyze the effect of three kinds of slicer software on 3D printing objects on the accuracy and surface roughness of the product. The 3D model CAD is sliced using three different slicer software, namely Ideamaker, Repetier Host, and Cura. The slice model result from each slicer will be printed on a 3D printer machine with the same process parameters to be compared. Then the product's dimensional and surface roughness will be measured to determine the effect of each slicer on product quality. The best quality of the product reflected the most suitable slicer software for the 3D printing machine that used. The best results achieved by Cura slicer because it has resulted in small dimensional deviations (max 0,0308±0,0079) and stabile high surface roughness of the product (max 1,585+059).

scholarly journals Review of Powder Bed Fusion Additive Manufacturing for Metals

Metals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1391
Author(s):  
Leila Ladani ◽  
Maryam Sadeghilaridjani
Keyword(s):  
Additive Manufacturing ◽  
Three Dimensional ◽  
Disruptive Technology ◽  
Powder Bed ◽  
Powder Particles ◽  
Metallic Parts ◽  
The Cost ◽  
Scientific Questions ◽  
Metal Additive

Additive manufacturing (AM) as a disruptive technology has received much attention in recent years. In practice, however, much effort is focused on the AM of polymers. It is comparatively more expensive and more challenging to additively manufacture metallic parts due to their high temperature, the cost of producing powders, and capital outlays for metal additive manufacturing equipment. The main technology currently used by numerous companies in the aerospace and biomedical sectors to fabricate metallic parts is powder bed technology, in which either electron or laser beams are used to melt and fuse the powder particles line by line to make a three-dimensional part. Since this technology is new and also sought by manufacturers, many scientific questions have arisen that need to be answered. This manuscript gives an introduction to the technology and common materials and applications. Furthermore, the microstructure and quality of parts made using powder bed technology for several materials that are commonly fabricated using this technology are reviewed and the effects of several process parameters investigated in the literature are examined. New advances in fabricating highly conductive metals such as copper and aluminum are discussed and potential for future improvements is explored.

scholarly journals A Review of Diagnostics Methodologies for Metal Additive Manufacturing Processes and Products

Materials ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 4929
Author(s):  
Teng Yang ◽  
Sangram Mazumder ◽  
Yuqi Jin ◽  
Brian Squires ◽  
Mathew Sofield ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
In Situ Monitoring ◽  
Ex Situ ◽  
Manufacturing Processes ◽  
Monitoring Methods ◽  
Metal Additive Manufacturing ◽  
Laser Breakdown ◽  
Mechanical Methods ◽  
Metal Additive

Additive manufacturing technologies based on metal are evolving into an essential advanced manufacturing tool for constructing prototypes and parts that can lead to complex structures, dissimilar metal-based structures that cannot be constructed using conventional metallurgical techniques. Unlike traditional manufacturing processes, the metal AM processes are unreliable due to variable process parameters and a lack of conventionally acceptable evaluation methods. A thorough understanding of various diagnostic techniques is essential to improve the quality of additively manufactured products and provide reliable feedback on the manufacturing processes for improving the quality of the products. This review summarizes and discusses various ex-situ inspections and in-situ monitoring methods, including electron-based methods, thermal methods, acoustic methods, laser breakdown, and mechanical methods, for metal additive manufacturing.

scholarly journals A General Fruit Acid Chelation Route for Eco-friendly and Ambient 3D Printing of Metals

2021 ◽  
Author(s):  
Soo Young Cho ◽  
Dong Hae Ho ◽  
Yoon Young Choi ◽  
Soomook Lim ◽  
Sungjoo Lee ◽  
...  
Keyword(s):  
3D Printing ◽  
Industrial Revolution ◽  
Metal Chelate ◽  
Three Dimensional ◽  
Metal Particles ◽  
The Novel ◽  
Metal Powders ◽  
3D Printed ◽  
Metal 3D Printing ◽  
Metal Additive

Abstract Recent advances in metal additive manufacturing (AM) have provided new opportunities for the design of prototypes of metal-based products and personalization of products for the fourth industrial revolution. Although metal AM, which enables fabrication of varied and sophisticated objects, is in the spotlight as a next-generation printing method, environmental issues arising during the printing process need to be addressed before it can be commercialized. Here, we demonstrate a novel mechanism for binder jetting three-dimensional (3D) printing of metals that is based on chelation triggered by an eco-friendly binding agent. Sodium salts of fruit acid chelators are used to form stable metal-chelate bridges between metal particles, which enable elaborate metal 3D printing. The strength of the 3D-printed object is improved by post-treatment, through a reduction in the porosity between the metal particles. Finally, the compatibility of the novel printing mechanism with a variety of metals is demonstrated via successful 3D printing of objects of various shapes using various metal powders. The proposed mechanism for metal 3D printing is expected to open up new avenues for the development of domestic-scale desktop 3D printing of metals.

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