K. Nyembwe

Publications20
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Citations42
Highly Influential Citations1
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Assessment of surface finish and dimensional accuracy of tools manufactured by metal casting in rapid prototyping sand moulds
In this paper, an initial assessment of the quality parameters of the surface finish and dimensional accuracy of tools made by metal casting in rapid prototyping (RP) sand moulds is undertaken. A… Expand
Comparison of additive manufacturing processes for rapid casting for tooling application using the analytic hierarchy process (AHP)
TLDR
In this paper, the Direct Croning (DC) process is compared to the Z-Cast process using the Analytic Hierarchy Process (AHP). Expand
Structural, compositional and mineralogical characterization of carbonatitic copper sulfide: Run of mine, concentrate and tailings
The aim of this study was to determine the structural, compositional, and mineralogical composition of carbonatitic copper sulfide concentrator plant streams. Three samples, each from a different… Expand
Physical properties of sand parts produced using a Voxeljet VX1000 three-dimensional printer
Successful case studies of metal casting applications using sand moulds and cores produced by additive manufacturing (AM) processes have been widely reported in the literature. The layered- based… Expand
Suitability of a South African silica sand for three-dimensional printing of foundry moulds and cores
Applications of three-dimensional printing (3DP) to metal casting include, among other things, the direct manufacturing of foundry moulds and cores in refractory materials such as silica sand. The… Expand
A CASE STUDY OF RAPID SAND CASTING DEFECTS
Rapid sand casting is quickly transforming as an established method for the production of sand moulds and cores for metal casting applications by additive manufacturing processes. The case study… Expand
An Analysis of the Manufacturing Time and Cost of Tool and Die Making by Metal Casting in Rapid Prototyping Sand Moulds
Characterization of Foundry Waste Sand Streams for Recycling Applications in Construction Industry
The local South African foundry industry discharges large volumes of waste sand each year, with estimates for silica and chromite sands of 250,000 and 25,000 tons, respectively. As a developing… Expand
Characterisation of South African Waste Foundry Moulding Sand: Metallic Contaminents
Waste foundry sands are invariably contaminated to some extent during the manufacturing of cast alloys. As such the sand is regarded as a hazardous material that requires exceptional precautions for… Expand
DETERMINING THE EFFECT OF THREE-DIMENSIONAL PRINTING ORIENTATION ON THE BENDING STRENGTH OF SAND MOULDS AND CORES WHEN USING A VOXELJET ADDITIVE MANUFACTURING MACHINE
Advances made in Additive Manufacturing (AM) or 3D printing led to the 3D printing of sand moulds and cores used in the foundry industry. Ideally, the mechanical properties of the 3D printed moulds… Expand
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