Graphite mold for casting and assembling method thereof

Abstract

The invention discloses a graphite mold for casting. The graphite mold for casting comprises a mold body, first sand boxes, second sand boxes and a mold sleeve; the mold body, the first sand boxes, the second sand boxes are positioned in the mold sleeve; a cavity is formed in the mold body, and an exhaust hole is formed in the top end of the mold cavity; the first sand boxes are positioned on theside part of the mold cavity, the first sand boxes are provided with a branch runner and a main runner, and an opening of the main runner is positioned at the top end of the first sand boxes; and oneend of the branch runner is connected with the middle part of the cavity, the other end of the branch runner is in communication with the main runner, and the second sand boxes are positioned at the lower part of the cavity. The graphite mold can be repeatedly used, the heat conductivity of graphite can be utilized, so that castings 5 can be quickly cooled.

Description

technical field [0001] The invention relates to a casting technology, in particular to a graphite mold for casting and an assembly method thereof. Background technique [0002] The excavator bucket tooth is an important part of the excavator. It is a combined bucket tooth composed of a tooth seat and a tooth tip. The bucket of the excavator is connected to the bucket tooth through a pin shaft. Picks are used on rotating parts such as coal shearers and shield machines. The structure and function of bucket teeth and picks are similar, and they are vulnerable parts, which need to be replaced in time after wear. [0003] The bucket tooth is usually composed of a tooth seat and a tooth tip. For a combined bucket tooth, the tooth seat is connected to the bucket, and the tooth seat and the tooth tip are movably connected by a pin shaft. After the tooth tip is worn, the tooth tip can be replaced directly. For bucket teeth with an integrated structure of tooth seat and tooth tip, t...

AI Technical Summary

Problems solved by technology

However, due to the lack of necessary heat treatment, the structure of the bucket teeth is uneven, the inserts do not play their due role, and the overall wear resistance of the bucket teeth is poor.

Since the sandboxes are for one-time use, each time a casting sandbox is cast, it will be broken and discarded, resulting in a great waste, and the subsequent casting needs to re-make the sandbox, which reduces the casting production efficiency

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