Research Article

The Influence of Prior Natural Aging on the Subsequent Artificial Aging Response of Aluminium Alloy A356 with Respective Globular and Dendritic Microstructures

Table 2

The dipping procedure for investment casting of alloy A356.

Coate no.SlurryStuccoDrying timeDrying method

Primary 1Zircon PrimaryZircon Sand8 hoursAir dry
Primary 2Zircon PrimaryZircon Sand8 hoursAir dry
Secondary 1CustomcoteChamotte 0.25–0.7 mm45 MinFan
Secondary 2CustomcoteChamotte 0.25–0.7 mm45 MinFan
Back-up 1CustomcoteChamotte 0.7–1.2 mm45 MinFan
Back-up 2CustomcoteChamotte 0.7–1.2 mm45 MinFan
Back-up 3CustomcoteChamotte 0.7–1.2 mm45 MinFan
Back-up 4CustomcoteChamotte 0.7–1.2 mm45 MinFan
Seal coateCustomcote24 HoursAir