casting with sand mold is the process of sand turning, such as bronze, ancient copper money, modern large collection of components, aluminum castings, and so on. The sand casting is the main process of the ancient Mint in China. Through the method of sand casting, the texture of the coin is generally fine and meticulous. It has been spread so far, and the surface naturally produces a layer of dark brown color.

    sand is the method of producing the product by pouring molten metal into the casting cavity and cooling and solidifying. In modern automobile manufacturing process, many parts are made of cast iron, which accounts for about 60% of the total vehicle weight. Sand material must have certain adhesive strength to be molded into the desired shape and resist the erosion of hot metal without collapse.

    the casting aluminum parts are usually made of sand type. Sand is made of sand and mixed with binder and water. Sand material must have certain adhesive strength to be molded into the desired shape and resist the erosion of hot metal without collapse. In order to make the sand mold fit into the cavity with the shape of the casting, it must first use wood to make a model, called wood mold. After the hot hot metal cooling, the volume will shrink. Therefore, the size of the wood model needs to be increased on the basis of the original length of one inch of the casting, and the thickness of the machined surface needs to be thickened accordingly. Hollow castings need to be made of sand core and corresponding core mold (core box). With the wood model, it can be turned into the cavity sand mold. In making sand, it is necessary to consider how to separate the mold from the top and bottom of the sand box, to consider where the aluminum water is flowing from, and how to fill the cavity in order to get the high quality castings. After the sand mold is made, it can be poured, that is, the aluminum water is poured into the cavity of the sand mold. When pouring, the molten iron temperature is 1250 to 1350 degrees, and the melting temperature is even higher. Then sand removal, repair, grinding and other processes will be able to become a qualified casting.