The main method of manual molding of casting is manual molding (core making) and machine molding (core making). Manual molding refers to the molding and making the core of the main tasks are completed by hand; machine modeling refers to the main modeling work, including sand filling, compaction, lifting mold, and so on by the molding machine completed. Botou foundry tools friends introduced main methods of manual molding: manual molding because of its flexible operation, strong adaptability, simple manufacturing process, without other equipment, is widely used in small batch production. But manual molding productivity is low, labor intensity is bigger. There are a lot of manual molding methods, and the following are common: 1., the whole mold for the shape is simple, the end of the plane and the largest cross-section of the casting, should use the whole mold modeling. The whole mold is easy to operate, and the shape of the whole shape is placed in a sand box without any box defects. The whole mould is suitable for the casting with simple shape and the biggest section at the end, such as gear blank, bearing seat, cover, shell and so on.
Process flow of foundry production?Casting production is a multi process combination of complex process, it mainly includes the following steps: 1) production process preparation, according to the production of parts drawing, production batch and delivery time, make production plan and process documents, drawing casting process drawing;?Turn left and turn right |2) production preparation, including the preparation of materials, molding and core making materials and appearance and core box, sand boxes and other equipment melting; 3) and other core; 4) melting and casting; 5) shakeout and casting inspection process.Forming principleCasting is the metal melting, it has mobility, and then poured into the mold cavity with a certain shape, the gravity or external force (pressure, centrifugal force and electromagnetic force) under the action of the filled cavity, cooled and solidified into the casting (or parts) of a metal forming method.?Turn left and turn right |Figure 1 casting process?Castings are generally used as blanks and machined as parts. However, many castings do not require cutting to meet the design accuracy and surface roughness requirements of the parts, and are directly used as part.
