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Manual molding of castings
The main methods of manual molding
Sand casting is divided into manual molding ( core making) and machine shaping (core making). Manual molding means that the main work of molding and core making is done by hand. Machine molding means that the main molding work, including sand filling, compaction, mold box closing, etc., is completed by the molding machine. Botou Foundry Measuring Tool Friends introduces the main methods of manual molding
Manual molding is widely used in single-piece and small batch production due to its flexible operation, strong adaptability, simple process equipment and no need for molding equipment. However, manual molding has low productivity and high labor intensity. There are many commonly used methods of manual molding, including the following
Whole-mold molding
For castings with simple shapes and flat ends and the largest cross-section, whole-mold molding should be used. The whole mold is easy to operate. When molding, the entire mold is placed in a sand box and there will be no boxing defects. Whole mold molding is suitable for castings with simple shapes and the largest cross-section at the end, such as gear blanks, bearing housings, etc.