Casting sand is a kind of molding material used to prepare molding sand and core sand in casting production. For example, steel, iron and most non-ferrous alloy castings can be obtained by sand casting. Because the mold manufacturing is simple, it can adapt to single piece production, batch production and mass production of castings. For a long time, it has been the basic process in casting production. However, what kind of sand is the casting sand? What are the raw materials?What equipment is selected? Here are the answers.
1. What is the sand for casting?
Casting sand is widely used in sand casting production. According to relevant statistics, about 1 ton of new sand needs to be added for each ton of qualified castings. Moreover, with the increasing demand for high-performance castings in automobile, railway transportation, aerospace and other industries, the market demand scale of casting products continues to grow. At present, the sand used for casting is silicon sand and non silicon sand.
01. Silica sand: the main mineral composition is SiO2.
Natural silica sand: used for molding sand and core sand of non-ferrous alloy castings, iron castings and small and medium-sized steel castings.
Selected natural silica sand: used for various molding sand and core sand with organic matter as binder.
Artificial silica sand: used for molding sand and core sand of steel castings.
02. Non siliceous sand.
The sand used for casting is limestone sand, quartz sand, corundum sand, clay sand, zirconium sand, etc. there are many kinds and different uses.
2. What are the raw materials of casting sand?
Limestone sand:It is broken from limestone. The main mineral composition is CaCO3. It is used for molding sand and core sand of steel castings.
Quartz sand:It is a granular material produced by crushing and processing with quartz stone as raw material. Its color is milky white or translucent. It is commonly used in casting, fireproof materials, gold treatment, chemical industry and other fields.
Corundum sand:The main mineral composition is α- Al2O3, shell material for investment casting and ceramic mold casting.
Clay sand:It is mainly divided according to the mud content of raw sand. There is no specific requirement for quartz content, but the mud content needs to be less than 50%, which is commonly used in non-ferrous metal castings.
3. What equipment is used to treat casting sand?
Casting sand treatment equipment still has to be selected according to demand. How many meshes of casting sand are generally used in the market at present?It is 50-100 mesh or 70-140 mesh, which is also about 0.1-0.333mm. Therefore, 5X sand making machine is generally used. Because it is developed in combination with the actual situation of domestic sand and stone production, it integrates various crushing modes, dual-purpose distribution plate and deep cavity impeller design, with improved throughput and high work efficiency, and produces 12-650 tons per hour.
01. The peripheral guard can be turned up and down, with long service life, hydraulic cover opening device, convenient maintenance, shortening shutdown time and improving efficiency;
02. The combined throwing head only needs to replace the worn part, which can reduce the use cost by 30%;
03. The air flow in the vortex chamber is self circulating, plus pulse dust collector and noise eliminator to realize green and environmental protection sand making;
04. Lubrication mode can be selected, and the bearing chamber is of thin oil type and grease type modular design, which can realize overall interchangeability.
SMMVIK Machinery has focused on producing all kinds of mining machines for many years and has been continuously improving its production process. It has three production bases with large scale and fast production speed. All of them are sold directly from stock, and the delivery is more timely. There is no intermediate link cost, and the price of casting sand treatment equipment is more favorable. For details, you can consult online and learn more relevant information, There are technical managers to answer for you.
