Method for placing chiller in casting process

Abstract

The invention discloses a method for placing a chiller in a casting process. The chiller is manufactured in accordance with a technological design, which is of a frustum-shaped structure; a mould is manufactured in accordance with a casting technology and the position of the mould, corresponding to the position embedded with the chiller, is provided with a high-strength magnet; a small end of the chiller is absorbed on the corresponding high-strength magnet on the mould, and molding sand is filled; and the mould is took out in accordance with a conventional method, and the chiller is left in a sandbox. The cross section of the chiller is round or polygonal or irregularly shaped. By using the method for placing a chiller in the casting process, the processing accuracy requirement for the chiller is reduced greatly, the processing cost of the chiller is lowered, and the effects that the position of a cast, where the chiller is placed, has no burrs, and the chiller is easy to clean after being cast are reached. In the method provided by the invention, the chiller can be placed at any position and is accurately positioned, so that the efficiency of placing the chiller is improved, and the production efficiency of a moulding line is increased largely.

Description

technical field [0001] The invention belongs to the technical field of casting, and in particular relates to a method for placing cold iron in the casting process. Background technique [0002] In the process of casting production, the tendency of shrinkage and porosity is large on isolated parts or local thick parts. It is necessary to add feeding risers or place chilled iron to change the solidification sequence of castings, so as to produce castings with dense internal structure, especially The most economical solution is to place cold iron. The traditional solution for placing the cold iron is to reserve the position of the cold iron on the mold, and place the cold iron in the sand mold after molding. This solution has the following problems: (1) The cold iron is easy to cause sand rubbing during the lowering process, which has low efficiency and affects the working efficiency of the entire molding line. (2) The dimensional accuracy of the cold iron is required to ...

AI Technical Summary

Problems solved by technology

This scheme has the following problems: (1) The cold iron is easy to cause sand rubbing during the lowering process, which has low efficiency and affects the working efficiency of the entire molding line

If the size of the chill iron is large or has burrs, it will prevent the chill iron from being placed in the sand mold; if the size of the chill iron is small, the chill iron will be wrapped by molten iron after pouring, which will reduce the chilling function of the chill iron and cause the casting There are burrs around the iron, which will increase the difficulty of cleaning. In severe cases, the cold iron and the casting will be fused together and the casting will be scrapped.

Therefore, the use cost of the cold iron is increased to a certain extent (3) The traditional solution makes the cold iron only be placed in the lower box of the casting, and the hot joint of the upper box can only be solved by the riser, which has certain limitations

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