Sand mold casting is a mixture of ordinary fine yarn for the mold, using materials such as steel alloys, aluminum alloys, copper alloys, zinc alloys, glass and so on. After melting the material poured into the sand mold, condensation mold can be, suitable for medium, large or very large castings.
What is sand casting?
What are the cost advantages of sand casting?
What should be the choice of sand casting?
sand casting In order to take out the pattern before casting the metal, the casting mold should be two or more parts; during the casting mold manufacturing process, the holes and vent holes to pour the metal into the casting mold must be left to synthesize the casting system. After casting the metal liquid, the mold is kept for a reasonable time until the metal solidifies. After the parts were removed, the molds were destroyed, so a new mold had to be made for each casting. Sand mold workshops can cast large parts. Sand molds can be used for iron casting, bronze casting, brass casting, and aluminum casting. Wet casting is another sand casting process that is cost effective and can produce parts in a variety of sizes.
The sand used in sand casting is relatively inexpensive and has sufficient refractoriness to be used even in cast steel. In addition to sand, a properly proportioned binder (usually clay) is usually mixed with or present in the sand. Water is usually added to the sand mixture, but sometimes other substances are added to alter the strength and plasticity of the clay and to achieve the proper degree of polymerization for molding. Sand is usually contained in a frame system or using mold boxes or sand boxes. Foundry cavities are created by compressing the sand around the pattern or by using a pattern plate or by engraving directly on the sand mold.
1) Sand mold casting is easy to start the mold, which simplifies the molding process.
(1) The selection of parting surface should try to avoid the live block and core, to simplify the molding, modeling and molding process.
(2) To facilitate demolding, the parting surface should be selected at the source of the largest section of the casting.
(3) The parting surface should be as straight as possible and the number should be small.
(4) Try to provide the casting with only one parting surface to adopt two-box modeling with a simple modeling process.
(2) In sand casting, try to place the important machining surface or most of the machining surface and the machining reference surface of the casting in the same sand box.
3) In sand casting, try to place the cavity and the main core in the lower box.
Based on its twenty years' expertise in 3D printing technology and rich experience in casting application on various metal materials, FHZL has launched the 4th generation sand 3D printer in 2019, which can achieve higher printing speed and better printing efficiency, but cost lower operation cost and maintenance cost.
