MUMBAI, India, April 20 -- Intellectual Property India has published a patent application (202441078484 A) filed by Don Bosco Institute Of Technology; Dr. Ajk Prasad; Dr. Reddappa HN; and Dr. K R Nataraj, Bangalore, Karnataka, on Oct. 16, 2024, for 'recyclable pattern wax formulation used in investment casting foundries.'
Inventor(s) include Don Bosco Institute Technology; Dr. Ajk Prasad; Dr. Reddappa HN; and Dr. K R Nataraj.
The application for the patent was published on April 17, under issue no. 16/2026.
According to the abstract released by the Intellectual Property India: "The results of the experimental studies on recyclability carried out using virgin wax formulations are presented. Pattern wax formulations were prepared by melting respective ingredient waxes. Melting point (MP), congealing point (CP) and ash content (AC) of these formulations were determined. A wax formulation having lowest MP, CP and AC was chosen for recyclability experiments. Recyclability studies were carried out with pattern wax formulation having an average melting point (MP) of 34.960C, average congealing point (CP) of 39.650C and ash content (AC) 0.05 %. The wax formulation selected was recycled three to five times, without blending fresh wax formulation or with recycled wax formulation for making pattern and gating system in all the recycles. Yield in each cycle was varying 90 to 95 %. Components have acceptable quality (dimensional and surface finish). Scanning electron micrograph of zircon flour, dried zircon-colloidal silica green cake and surface roughness values of the components are complementing each other. Wax patterns possessed the lowest surface roughness values, cast components exhibited intermediate values and those of broken inside portion of the sintered shells exhibited the highest surface roughness values. The same observation was noticeable for the components obtained using virgin wax formulation and in third recycle of the formulation."
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