Concise review on Pattern making process in Rapid Investment Casting: Technology, Materials &amp; Numerical modelling aspect

Badanova, Nazym; Perveen, Asma; Talamona, Didier

doi:10.1080/2374068x.2021.1959113

Cited by 7 publications

(4 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The S/N ratio for the smaller-is-better category was selected to minimize the surface roughness and dimensional deviation of the printed patterns. The S/N ratio is calculated using Equation (2).…”

Section: Analysis Of Measurementsmentioning

confidence: 99%

See 1 more Smart Citation

Optimization of Dimensional Accuracy and Surface Roughness of SLA Patterns and SLA-Based IC Components

Mukhangaliyeva,

Dairabayeva,

Perveen

et al. 2023

Polymers

View full text Add to dashboard Cite

Rapid investment casting is a casting process in which the sacrificial patterns are fabricated using additive manufacturing techniques, making the creation of advanced designs possible. One of the popular 3D printing methods applied in rapid investment casting is stereolithography because of its high dimensional precision and surface quality. Printing parameters of the used additive manufacturing method can influence the surface quality and accuracy of the rapid investment cast geometries. Hence, this study aims to investigate the effect of stereolithography printing parameters on the dimensional accuracy and surface roughness of printed patterns and investment cast parts. Castable wax material was used to print the sacrificial patterns for casting. A small-scale prosthetic biomedical implant for total hip replacement was selected to be the benchmark model due to its practical significance. The main results indicate that the most significant stereolithography printing parameter affecting surface roughness is build angle, followed by layer thickness. The optimum parameters that minimize the surface roughness are 0.025 mm layer thickness, 0° build angle, 1.0 support density index, and across the front base orientation. As for the dimensional accuracy, the optimum stereolithography parameters are 0.025 mm layer thickness, 30° build angle, 0.6 support density index, and diagonal to the front base orientation. The optimal printing parameters to obtain superior dimensional accuracy of the cast parts are 0.05 mm layer thickness, 45° build angle, 0.8 support density index, and diagonal to the front model base orientation. With respect to the surface roughness, lower values were obtained at 0.025 mm layer thickness, 0° build angle, 1.0 support density index, and parallel to the front base orientation.

show abstract

Section: Analysis Of Measurementsmentioning

confidence: 99%

“…The obtained mold is heated in an oven to melt all wax content. The molten metal is poured into the ceramic mold and allowed to solidify and cool before the destruction of the ceramic shell [2]. removing a ceramic shell; (j) a cast part that is prepared to be severed from the assembly [1].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Dimensional Accuracy and Surface Roughness of SLA Patterns and SLA-Based IC Components

Mukhangaliyeva,

Dairabayeva,

Perveen

et al. 2023

Polymers

View full text Add to dashboard Cite

show abstract

“…Lost wax casting is the process of creating a wax model of the required restoration and casting it in a heat-resistant ceramic material. Wax is used to produce the patterns because it is simple to work with, can be accurately moulded, and can be heated to completely remove from the mould [22][23][24].…”

Section: Cad/cam Castingmentioning

confidence: 99%

An investigation of the financial feasibility and technical differences among Shell Sintering Technology (SST), Subtractive, Casting Manufacturing, and Slurry Vat Photopolymerisation for the fabrication of ceramic dental crowns.

Côcco¹,

Cunico²

2023

Preprint

View full text Add to dashboard Cite

The objective of this study was to evaluate the economical effects of manufacturing dental prostheses using five alternative techniques: one subtractive manufacturing known as CAD/CAM casting, vat photopolymerisation casting, two slurry vat photopolymerisation techniques, and shell sintering technology (SST). Deterministic bottom-up economic models were employed for this work, and the inputs used included the cost of the materials, equipment, and labour, as well as the time needed to finish each stage of the porcelain crown manufacture. The results from the CAD/CAM and Vat photopolymerisation casting procedures were classified in the average when total overhead costs were taken into account. With payback periods of 2.9 and 3.2 years and ROI values of about 35% and 31%, respectively, the financial returns are comparable and are, from an economic standpoint, quite acceptable. On the other hand, the Slurry 1 and 2 vat photopolymerisation techniques performed poorly to demonstrate a profit or payback, with negative ROIs of -40 and − 52, respectively, indicating that they are unsuitable for this type of application, though they are useful for other applications that traditional techniques cannot solve. In contrast, SST technology has the most affordable equipment, labour, and material expenses. This has a favourable effect on overall production costs, which are much lower when compared to available methods. All overhead median metrics, such as annual profit (US$ 770100.00), 0.5 years of payback, and an ROI of 187%, displayed especially tempting results, demonstrating that this technique has great performance, low operating costs, and outstanding financial returns. In conclusion, the SST technique has the potential to disrupt the dental prosthesis production sector because of its great economics.

show abstract

“…(In Russ.). https://doi.org/10.17073/0021-3438-2023-4-5-14 процессом литья по выплавляемым/выжигаемым моделям [7][8][9]. Эти преимущества нивелируются ступенчатостью поверхности модели, связанной с особенностью 3D-печати, которая отрицательно влияет на шероховатость поверхности и допуски на размеры отливок.…”

Section: Introductionunclassified

Consumable additive FDM models in the production of aluminum alloy castings

Varfolomeev,

Petrov

2023

Izv.VUZ. Tsvet. Met.

View full text Add to dashboard Cite

This article describes the results of a study aimed at improving production technology of experimental castings from aluminum alloys by investment casting using models produced by 3D printing. The consumable models were produced using fused deposition modeling (FDM). Biodegradable polylactide (PLA) was used as a material for the models. In order to decrease the surface roughness of consumable PLA model. chemical post-treatment by dichloromethane needs to be performed. After immersion of the model into the solvent for 10s, its surface becomes smooth and glossy. Three-point static bending tests of PLA plates demonstrated a mechanical strength of average ~45.1 MPa. A thermomechanical analysis of polylactide demonstrated that in the course of heating of ceramic shell in excess of 150 °C, the polylactide model begins to expand intensively by exerting significant pressure on the ceramic shell. In order to decrease stress during the removal of polylactide model from ceramic mold, the heating time in the range of 150–300 °C needs to be heated to a maximum. The use of hollow consumable casting models with a cellular structure not higher than 30 % is also sensible. The stresses on the shell will not exceed its strength. Characteristic temperature properties of PLA plastic thermal destruction were detected using thermogravimetric analysis. Polylactide was established to completely burn out upon heating to 500 °C leaving no ash residue. Analysis of the results identified the burning modes of polylactide models from ceramic molds. Using a Picaso 3D Designer printer (Russia), the PLA models were printed used for production of experimental castings from aluminum alloys. It was revealed that the surface roughness (Ra) of a casting produced using a consumable model treated by dichloromethane decreases by 81.75 %: from 13.7 to 2.5 μm.

show abstract

Concise review on Pattern making process in Rapid Investment Casting: Technology, Materials & Numerical modelling aspect

Cited by 7 publications

References 31 publications

Optimization of Dimensional Accuracy and Surface Roughness of SLA Patterns and SLA-Based IC Components

Optimization of Dimensional Accuracy and Surface Roughness of SLA Patterns and SLA-Based IC Components

An investigation of the financial feasibility and technical differences among Shell Sintering Technology (SST), Subtractive, Casting Manufacturing, and Slurry Vat Photopolymerisation for the fabrication of ceramic dental crowns.

Consumable additive FDM models in the production of aluminum alloy castings

Contact Info

Product

Resources

About