Aluminum Flange in Low Pressure Casting

Ding Supei~1 He Qiang~2 Xi Haichao~3

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Aluminum Flange in Low Pressure Casting
Issue 7, Pages: 422-423(2005)
Published： 2005 ，
DOI：

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[1]丁苏沛,何强,习海潮.519法兰铝铸件的低压铸造[J].特种铸造及有色合金,2005(07):422-423+383.

Ding Supei~1 He Qiang~2 Xi Haichao~3. Aluminum Flange in Low Pressure Casting. [J]. Special Casting & Nonferrous Alloys (7):422-423(2005)
[1]丁苏沛,何强,习海潮.519法兰铝铸件的低压铸造[J].特种铸造及有色合金,2005(07):422-423+383. DOI：

Ding Supei~1 He Qiang~2 Xi Haichao~3. Aluminum Flange in Low Pressure Casting. [J]. Special Casting & Nonferrous Alloys (7):422-423(2005) DOI：

摘要

519法兰壳体是大型回转体结构的气密性铸件

其外形尺寸为680mm×364mm

通过低压铸造的生产实践表明

在模具温度为300～350℃

充型压力为0.3MPa

充型时间为20s

保压压力为0.8MPa

保压时间为120s的条件下

可生产出优良铸件

工艺出品率由砂型铸造的50%提高到75%以上

铸件一次气密性检漏合格率达98%以上。由于铸件加工量比砂型铸造工艺减少了5%以上

铸件质量由52kg降低到36kg

每件减轻了16kg

仅此项每年可节约30万元。

Abstract

The 519 Flange house with the size of 600 mm×364 mm that is a gas-sealing heavy rotary structure casting is manufactured in low pressure casting.The results showed that the sound Flange house can be manufactured successfully with die temperature of 300～350 ℃

filling pressure of 0.3MPa and filling time of 20 s

holding pressure of 0.8MPa as well as holding pressure time of 120 s.Product yield increases from 50% in sand casting to over 75%.The qualified rate of once-gas sealing testing reaches up to 98%.