2005 - Innovative Lost Wax Investment Casting Technique

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2005 - Innovative Lost Wax Investment Casting Technique

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The lost-wax investment casting method is widely used to cast jewelry products. In the jewelry industry there have been continuous efforts to increase the productivity, decrease the process loss and optimize the cost of production. The wax carbon produced starts reaction at low temperature, producing gases like CO and CO2. The thermal decomposition of CaSO4 generates SO2, leading to gas porosity. To reduce porosity, it is important to remove carbon and its oxides at the appropriate time. The new lost-wax investment casting process has effectively removed the reasons of porosity at the early cycle of burnout. Innovative wax tree-making techniques and burnout cycles have reduced the wax investment casting cycle time by 60%, with a 30% decrease in production loss with improved finish.

Author:  Dr. K.D. Desai

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