Calculation of production rate of impeller investment casting sand casting process

(1) Impeller investment casting – sand casting weight

The weight of each impeller by investment casting sand casting is about 1.5kg, and the total weight of 54 impellers by investment casting sand casting is 1.5 kg × 54=81kg

Impeller investment casting – sand casting wheel hub, spoke and rim weight WC = [π × zero point two five two × 0.138-π × zero point zero three five two × 0.138-π × (0.2082-0.0852) × 0.10] × 7800≈121kg

Impeller investment casting – sand casting weight = 81 + 121 = 202kg

(2) Impeller investment casting – sand casting riser weight

Impeller investment casting sand casting riser weight = 25 + 21 × 3=88kg

(3) Impeller investment casting sand casting process yield

Impeller investment casting sand casting process yield = 202 / 202 + 88 × 100%=69.6%

The production rate of impeller investment casting sand casting process is controlled within the normal range.

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