Numerical analysis of fused-coating metal additive manufacturing

Du, Jiaojiao; Wang, Xin; Bai, Hao; Guo, Zhao; Zhang, Yubin

doi:10.1016/j.ijthermalsci.2017.01.011

Cited by 34 publications

(12 citation statements)

References 29 publications

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“…It is possible to enhance the overall AM process control and quality by improving the airflow control loop under proper rates. In addition, in powder spreading, the parameters such as the elasticity, height, and speed of the spreading head could affect the solidification morphology of the coated layers [17].…”

Section: A Literature Reviewmentioning

confidence: 99%

MPI-Based System 2 for Determining LPBF Process Control Thresholds and Parameters

Adnan

Yang

Kuo

et al. 2021

IEEE Robot. Autom. Lett.

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Determining thresholds of the primary control loops (System 1) of an additive manufacturing (AM) process is challenging when realizing System 1 with its fast and intuitive capability for adapting to different metal powers, machine configurations, and process parameters. Based on the convolution neural network and long short-term memory models, this paper presents a secondary tuning loop (System 2) to classify the types of melt-pool images (MPIs) from a coaxial camera online, suggest polishing parameters, and determine the control thresholds of System 1 offline. Case studies indicate that the thresholds and parameters of System 1 including smoke discharging, powder coating, and laser polishing of control loops of a laser powder bed fusion (LPBF) machine can be more deliberatively and logically decided by the proposed MPI-based System 2.

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Section: A Literature Reviewmentioning

confidence: 99%

MPI-Based System 2 for Determining LPBF Process Control Thresholds and Parameters

Adnan

Yang

Kuo

et al. 2021

IEEE Robot. Autom. Lett.

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“…This method is a combination of Fused Metal Coating and Laser Surface melting (bed-based process). They used small parts of 7075 aluminum alloy to prove the experimental work [17]. Christoph et al developed a computational model to study the critical influence of powder cohesiveness on powder recoating process.…”

Section: Literature Reviewmentioning

confidence: 99%

An Investigation of the Metal Additive Manufacturing Issues and Perspective for Solutions Approach

Al-Shebeeb¹

2021

Concepts, Applications and Emerging Opportunities in Industrial Engineering

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Metal Additive Manufacturing (MAM) is delivering a new revolution in producing three-dimensional parts from metal-based material. MAM can fabricate metallic parts with complex geometry. However, this type of Additive Manufacturing (AM) is also impacted by several issues, challenges, and defects, which influence product quality and process sustainability. In this chapter, a review has been made on the types of small to medium-sized metallic parts currently manufactured using the MAM method. Then, investigation was undertaken to analyze the defects, challenges, and issues inherent to the design for additive manufacturing, by using MAM method. MAM-related obstacles are discussed in depth in this chapter and these obstacles occur in all size of metal printed parts. The reasons and solutions presented by previous researchers of these obstacles are discussed as well. A potential approach based on the author's knowledge and analysis for solving these issues and challenges is suggested in this chapter. Based on the author's conclusion, the MAM is not limited by part size, material, or geometry. In order to validate the potential solutions developed by the author of this work, performing actual MAM process is required and a local visit to manufacturing factories are also important to visualize these challenges and issues.

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“…The system of this printer is based on FDM. Hunko and Payton [9] developed Wire 3D (Wir3D) printing process (greatly inexpensive) using an electric circular arc to fusion metals at higher sedimentation averages than another added substance method in metals. Wire and arc additive industrialization empowered producers to construct parts by sedimentation metal in layers utilizing welding techniques.…”

Section: Introductionmentioning

confidence: 99%

Developing of a 3D Printer to Produce Parts Using Powder Metal

Faraj

Salloom

Khalid

2020

Int. J. Adv. Sci. Eng. Inf. Technol.

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The additive manufacturing (AM) process or three-dimensional printing (3DP) process is making stereoscopic shapes using a layered system. There are several materials used for printing such as plastic, wood, metal as powder, filament, liquid, or others, and there are also different ways for printing. Recently, the focus has been on metal printing, but the problem is that the high energy used such as laser, electron beam, or high heat to melt the metal to print it as required. For this reason, the price of 3D printers for metal is very expensive. In this paper, the design and implementation of a 3D printer for metal parts production are worked. The work also includes making an experimental test for the new 3D printer and printing 3D metal parts without using heat. In this work, Tevo-Tarantula 3D printer has been modified in terms of software and hardware. Two new extruders are designed to inject the metal powder and adhesive, where the heat was removed from the extruder head and the printer bed. The metal powder extruder contains a powder reservoir, glass funnel, and access valve where controlled through the solenoid valve. The adhesive extruder is controlled using a simple hydraulics. The printing process was done by printing two layers of metal powder and a layer of adhesive depending on the desired shape to create 3D objects using the SolidWorks software. Different metal models were printed and these models were compared with the original design which was drawing by SolidWorks software. The difference between the actual model drawing and the printed parts is differences between (0.004 mm) for some parts to (2.3 mm) for other parts or the percentage of error is between (0.1%-4%) for the printed parts. However, the material can be used in high temperatures, where rubber materials cannot be used, and in applications requiring porosity.

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Numerical analysis of fused-coating metal additive manufacturing

Cited by 34 publications

References 29 publications

MPI-Based System 2 for Determining LPBF Process Control Thresholds and Parameters

MPI-Based System 2 for Determining LPBF Process Control Thresholds and Parameters

An Investigation of the Metal Additive Manufacturing Issues and Perspective for Solutions Approach

Developing of a 3D Printer to Produce Parts Using Powder Metal

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