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The influence of the tablet height and final pressure on the final quality of the casting

Malik J., Eperješi Ľ., Fecko D., Gašpar Š.

Archives of Foundry Engineering

2011

Vol. 11, iss. 1s

37-40

The technology of die casting is in the connection of final quality of produced castings influenced by a lot of technological factors. These factors influence each other. This represents the complex reciprocal connections between the character of alloy, mould cavity filling time, construction of a mould and the efficiency of die cast machine. Between technological factors influencing the quality of casting belong the final pressure and the height of the tablet in the filling chamber. The final pressure should replace the gravity feeding of the molten metal into empty spaces of the casting and inhibit the clustering of bubbles, the tablet height eliminates the air amount enclosed in casting after pressing.