Method for casting a monoblock cylinder block and pressure casting machine for using the method
Method for casting a mono-block cylinder crankcase made from super-eutectic aluminum-silicon alloy containing more than 85 % silicon primary crystals of size of not more than 20 mu m in the support layer of the cylinder walls comprises preparing an alloying melt in a heated dosing oven (1) at a cast...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | Method for casting a mono-block cylinder crankcase made from super-eutectic aluminum-silicon alloy containing more than 85 % silicon primary crystals of size of not more than 20 mu m in the support layer of the cylinder walls comprises preparing an alloying melt in a heated dosing oven (1) at a casting temperature of 720-750[deg] C, pouring the melt into a casting machine (3) via a spout (2), pressure casting the melt in a mold (5) with liquid-cooled cylinder cores and quenching the melt to produce a silicon-deficient quenching layer having a thickness of 1 mm and finely forming and distributing the silicon primary crystals behind the quenching layer with 85 % having a grain size of not more than 20 mu m. An independent claim is also included for a pressure casting installation for producing the mono-block cylinder crankcase. |
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