A self-locking sand box for sand casting

Abstract

The invention relates to a sand casting self-locking sand box. The present invention can solve the following problems in the traditional sand casting sand box casting. First, the traditional sand casting is to manually connect the upper flask and the lower flask during casting, but the upper flask and the lower flask are connected The position correspondence is inaccurate and the situation is skewed, which causes quality problems of the castings; 2. When the molten metal is poured into the sand mold after the upper and lower flasks are connected, the sand mold has a certain thermal insulation effect on the molten metal. When the liquid is not cooled, subsequent operations may touch the sand mold box, causing displacement or vibration between the sand mold boxes, resulting in a certain deformation of the uncooled metal liquid, which affects the quality of the product. The flask provided by the invention accurately and tightly connects the upper flask and the lower flask together through the interlocking self-locking structure, so that the displacement between the upper flask and the lower flask is not easy to occur, and the production quality of the castings is guaranteed. .

Description

technical field [0001] The invention relates to the technical field of sand casting, in particular to a self-locking sand box for sand casting. Background technique [0002] Sand casting refers to the casting method that produces castings in sand molds. Steel, iron and most non-ferrous alloy castings can be obtained by sand casting. Because the molding materials used in sand casting are cheap and easy to obtain, the casting mold is easy to manufacture, and it can adapt to the single-piece production, batch production and mass production of castings. It has been the basic process in casting production for a long time. The sand box used in sand casting is divided into an upper sand box and a lower sand box, and the two boxes are overlapped during sand casting. [0003] However, the following problems exist in the traditional sand casting sand box casting. First, the traditional sand casting is to manually dock the upper sand box and the lower sand box during casting, but the...

AI Technical Summary

Problems solved by technology

[0003] However, the following problems exist in the traditional sand casting sand box casting. First, the traditional sand casting is to manually dock the upper sand box and the lower sand box during casting, but the positions of the upper sand box and the lower sand box after the docking are not corresponding. Accurate and skewed, causing quality problems in castings; 2. When the molten metal is poured into the sand mold after the upper sand box and the lower sand box are docked, because the sand mold has a certain heat preservation effect on the molten metal, the molten metal is not cooled. When the subsequent operation may touch the sand box, the sand box will be displaced or vibrated with each other, resulting in a certain deformation of the uncooled molten metal, which will affect the product quality

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