Casting method commonly is sand casting, followed by special casting method, such as: metal casting, investment casting, plaster casting ...... and so on. The sand casting sand can be divided into clay casting, organic binder sand casting, resin from the hard sand, lost foam and evanescent mode etc.
1.Priority should be using sand casting, mainly reason is compared with other casting methods, sand casting is with low cost, and its production process is simple with short production cycle. When the wet type can not meet the requirements, we can consider to use dry clay sand or other sand. Casting weight with green sand casting is from a few kilograms to dozens of kilograms, while dry clay production castings can be dozens of tons.
2.Casting method should adapt production volume, such like low-pressure casting, die-casting, centrifugal casting and other casting methods, because equipment and tooling are expensive, so mass production is the most suitable choice.
3.Modeling method should be suitable for factory conditions.
4. Take into account the accuracy requirement and cost of the casting.