Sand casting device and method

Abstract

The invention relates to a sand casting method, which uses a sand casting device, the sand casting device includes a sand removal box, a placement plate, a fan, a sand scraping mechanism and an air supply mechanism, and the middle part of the upper end surface of the sand removal box is a rectangular hollow The middle part of the inner wall of the sand removal box is provided with a placement plate, the middle part of the lower end surface of the sand removal box is provided with a rectangular stepped groove, a fan is arranged in the lower step of the rectangular stepped groove, and an air supply mechanism is arranged inside the sand removal box. The unique sand-scraping mechanism can not only blow sand on the upper surface of the impeller, but also perform sand-scraping treatment on it, which has a double effect of sand removal. The blades of the impeller are blown and brushed to effectively remove the gravel at the corners of the blades of the impeller.

Description

technical field [0001] The invention relates to the technical field of casting processing, in particular to a sand casting method. Background technique [0002] Sand casting refers to the casting method of producing castings in sand molds. Steel, iron and most non-ferrous alloy castings can be obtained by sand casting methods. Because the molding materials used in sand casting are cheap and easy to obtain, the casting molds are easy to manufacture. Parts production, batch production and mass production can be adapted. For a long time, it has been the basic process in casting production. The casting mold used in sand casting is generally composed of outer sand mold and core. In order to improve the surface quality of castings, often in Brush a layer of paint on the surface of the sand mold and core. The main components of the paint are powdery materials with high refractoriness and good high temperature chemical stability and binders. In addition, there are carriers (water or...

AI Technical Summary

Problems solved by technology

[0003] 1. The common sand removal treatment of the impeller is to manually remove the gravel accumulated in the blade. This method of sand removal will easily lead to the ineffective treatment of the gravel at the corner of the blade, so that the corner of the blade of the impeller still remains There is excess sand, which causes the gravel on the surface of the impeller to have a certain impact on the operation of the impeller during later use;

[0004] 2. When sanding the surface of the impeller, the remaining gravel on the impeller is sometimes easy to stick to the surface of the impeller, so that the brush cannot remove the surface gravel

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