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Which sand can be used in aluminium sand casting and its influencing factors
- Sep 12, 2018 -

In the aluminium sand casting, the type of sand that can be used is determined by the use requirements. If the surface finish of the casting is required to be high, the hot core box coated sand is used; if low cost is required, the wet sand is used; If the product size is higher, resin sand can be used.


Coated sand: Before molding, sand or core sand covered with a solid resin film on the surface of the sand, there are two kinds of coating processes: cold method and thermal method.

Moisture sand: Also known as wet sand, it is a sand mixture with bentonite as a binder and water and other additives are evenly mixed, which can be directly poured.

Resin sand: A kind of granule made of thermoplastic acryl or polymeric thermosetting amine, which is divided into three types: ordinary type, water-wash type and scrub type.


This is because sand casting, which is a casting method, refers to the production of castings in a sand mold. Moreover, it has the advantages of low cost, simple operation and short production cycle, and can be produced in one piece, in batch and in large quantities. On applicable materials, it is steel, iron and most colored alloys such as aluminum alloys. Therefore, based on these points, it is concluded that aluminum sand casting can be sand casting.


The influence factors of aluminum sand casting and its castings are mainly from the professional point of view. There are two types of sand and core sand, because if the quality of the sand is not good, the castings will have defects such as pores, sand holes, sand and sand. The problem, and will also affect the normal progress of casting, as well as the quality of casting and the performance of the product. Therefore, sand and core sand with good quality and performance should be used to avoid these defects and ensure smooth casting and good casting quality. In addition, it is also necessary to know that the sand of good quality should have good gas permeability, fire resistance, plasticity and concession, and also have high strength.