Dongguan Precision CastingHow much do you know about craftsmanship? In order to better assist us in understanding this knowledge, today we will explain this knowledge to us, as follows:

In view of this knowledge, we should note that according to statistics, in my country or internationally, 60 to 70% of all castings are produced with sand molds, and about 70% of them are produced with clay sand molds. The main reason is that sand casting has lower cost than other casting methods, simple production process, and short production cycle. So like car engine cylinder block, cylinder head, crankshaft, etc.Dongguan Precision CastingThey are all produced by the clay green sand process. When the wet type cannot meet the requirements, then consider using the clay sand surface dry sand type, dry sand type or other sand types.

The weight of castings from clay green sand can range from a few kilograms to tens of kilograms, while the castings produced by dry clay can weigh dozens of tons. Generally speaking, for medium and large castings, iron castings can be produced with resin self-hardening sand molds, and steel castings can be produced with water glass sand molds. Standard and accurate castings with smooth surface can be obtained, but the cost is higher.

In addition, we should also note that the casting precision, surface finish, material density and metallographic arrangement, mechanical functions, etc. produced by sand casting are often poor. Therefore, when the requirements for these functions of the casting are higher, it should be Use other casting methods, such as investment (lost wax) casting, die casting, low pressurePrecision cast steeletc.