Manufacturing and installation method of split-assembled core for high-speed rail corbel casting

Abstract

The invention belongs to a casting technology in mechanical manufacturing industry, and particularly relates to a manufacturing and mounting method of a split assembly type core for casting a high-iron sleeper beam. The core for casting the sleeper beam is a whole sand core formed in a manner that a plurality of resin sand single cores (7) with the same structure are arranged into five rows and six resin sand single cores are arranged in each row; a core head seat (7-5) is arranged on each resin sand single core (7); a core head sealing ring (7-4) is arranged on the inner side surface of each core head seat (7-5); a single core base (7-1) connected with a low sand mould (6) is arranged at the lower part of each resin sand single core (7); a positioning sand plugging hole (7-2) is formed in the center of one side of each core head seat (7-5); an exhaust passage (7-3) is formed in the inner side of each single core base (7-1); a locking device and an exhaust tee (10) are mounted at the positioning part of each resin sand single core (7); a cylindrical resin sand core (13) and an exhaust pipe (6-5) are mounted on the side surface of each resin sand single core; and then the positioning sand plugging holes (7-2) are filled with mixed resin sands. The split assembly type core is easy to manufacture, simple in technology and flexible in transportation due to small size; and the production cost is reduced, and the production efficiency of the sleeper beam is improved.

Description

technical field [0001] The invention belongs to the casting process in the machinery manufacturing industry, and in particular relates to a method for making and installing a split-assembled core for high-speed iron bolster casting. Background technique [0002] The high-speed rail bolster is one of the key parts of the high-speed rail EMU. During the casting process of the bolster, due to its large volume and very weak connection parts, the resin sand core is made into a whole or divided into several parts and then connected into a whole. All will cause difficulty in parting, difficult to mold, the lower core is easy to be damaged or broken, and the wall thickness of the corbel is not easy to guarantee. Once there is a problem when the core is lowered, it cannot be adjusted, and the quality of the corbel cannot be guaranteed, resulting in a waste of manpower and material resources. In addition, the overall sand core is inconvenient to transport due to its large size, and b...

AI Technical Summary

Problems solved by technology

[0002] The high-speed rail bolster is one of the key parts of the high-speed rail EMU. During the casting process of the bolster, due to its large size and very weak connection parts, the resin sand core is made into a whole or divided into several parts and then connected to form a whole. It will cause difficulty in parting, difficult to remove the mold, the lower core is easy to be damaged or broken, and the wall thickness of the corbel is not easy to guarantee.

Once there is a problem when setting the core, it cannot be adjusted, and the quality of the corbel beam cannot be guaranteed, resulting in a waste of manpower and material resources

In addition, the overall sand core is inconvenient to transfer due to its large size, and because the manufacturing process of the corbel is difficult, there are many key points and difficulties in production, resulting in imported parts for the high-speed rail corbel, which increases the production cost

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