Optimization of Powder Bed Fusion of Maraging Steel Powders for Plastic Injection Moulding

2021 ◽  
Author(s):  
Valentina Vicario ◽  
Daniele Miceli
Keyword(s):  
Maraging Steel ◽  
Injection Moulding ◽  
Powder Bed Fusion ◽  
Powder Bed ◽  
Plastic Injection Moulding ◽  
Plastic Injection

scholarly journals A Review of Factors Affecting the Mechanical Properties of Maraging Steel 300 Fabricated via Laser Powder Bed Fusion

Metals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1273 ◽  
Author(s):  
Barry Mooney ◽  
Kyriakos Kourousis
Keyword(s):  
Mechanical Properties ◽  
Maraging Steel ◽  
Processing Parameters ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Factors Affecting ◽  
Powder Bed ◽  
Porosity Defects ◽  
Research Findings ◽  
Microstructure Density

Maraging steel is an engineering alloy which has been widely employed in metal additive manufacturing. This paper examines manufacturing and post-processing factors affecting the properties of maraging steel fabricated via laser powder bed fusion (L-PBF). It covers the review of published research findings on how powder quality feedstock, processing parameters, laser scan strategy, build orientation and heat treatment can influence the microstructure, density and porosity, defects and residual stresses developed on L-PBF maraging steel, with a focus on the maraging steel 300 alloy. This review offers an evaluation of the resulting mechanical properties of the as-built and heat-treated maraging steel 300, with a focus on anisotropic characteristics. Possible directions for further research are also identified.

scholarly journals Bonding Integrity of Hybrid 18Ni300-17-4 PH Steel Using The Laser Powder Bed Fusion Process For The Fabrication of Plastic Injection Mould Inserts

2021 ◽  
Author(s):  
Yuk Lun Simon Chan ◽  
Olaf Diegel ◽  
Xun Xu
Keyword(s):  
Tool Steel ◽  
High Performance ◽  
High Volume ◽  
Successful Outcome ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Injection Mould ◽  
Powder Bed ◽  
Plastic Injection Mould ◽  
Plastic Injection

Abstract Laser powder bed fusion (LPBF) is a metal additive manufacturing (AM) process for fabricating high-performance functional parts and tools in various metallic alloys, such as titanium, aluminium and tool steels. The process can produce geometrically complex features such as conformal cooling channels (CCC) in plastic injection mould inserts to improve cooling efficiency. A recent attempt using a hybrid-build LPBF AM technique to fabricate aluminium mould inserts with CCC attained a substantial reduction in processing time, making it an attractive alternative method to the mould-making industry. Also, the successful bonding of aluminium powder with wrought aluminium alloys proved the practicability of this concept. This study further investigates whether a similarly successful outcome could apply to tool steel since tool steel is the preferred material for constructing high-grade high-volume plastic injection moulds. In this investigation, hybrid 18Ni300 powder-wrought 17-4 PH steel parts were additively fabricated using the hybrid-build LPBF technique, followed by various post-build heat treatments. The mechanical and metallurgical properties of the samples’ bonded interface were examined. Microstructure analysis revealed homogenous powder-substrate fusion across the interface region. Results from tensile tests confirmed strong powder-substrate bonding as none of the tensile fractures occurred at the interface. A direct post-build one-hour age-hardening treatment achieved the best combination of hardness, tensile strength, and ductility. The overall result demonstrates that hybrid-built 18Ni300-17-4 PH steel can be a material choice for manufacturing durable and high-performance injection mould inserts for high-volume production.

Microstructure of Built Part Obtained by Powder Bed Fusion Process with Metal

2019 ◽  
Vol 825 ◽  
pp. 1-6
Author(s):  
Tatsuaki Furumoto ◽  
Kyota Egashira ◽  
Souta Matsuura ◽  
Makoto Nikawa ◽  
Masato Okada ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Metal Powder ◽  
Maraging Steel ◽  
Process Parameters ◽  
Steel Powder ◽  
Powder Bed Fusion ◽  
Laser Melting ◽  
Powder Bed ◽  
Suitable Heat Treatment ◽  
Deposited Metal

The influence of various process parameters on the building of maraging steel powder by the selective laser melting (SLM) processes is investigated. The microstructure in the built part was observed and the influence of the heat treatment was evaluated. As results, the depth of solidified layer was higher than that of deposited metal powder, and its value was influenced with the process parameters. The microstructure in the boundary between the built part and the substrate was quite different from the built part even if the suitable heat treatment was performed.

Practice vs. laboratory tests for plastic injection moulding

2001 ◽  
Vol 142-144 ◽  
pp. 143-145 ◽  
Author(s):  
M. Van Stappen ◽  
K. Vandierendonck ◽  
C. Mol ◽  
E. Beeckman ◽  
E. De Clercq
Keyword(s):  
Injection Moulding ◽  
Laboratory Tests ◽  
Plastic Injection Moulding ◽  
Plastic Injection
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