Filter for casting and filtering system comprising same

Abstract

The invention provides a filter for casing. The filter comprises a flow inlet, an upper liquid storing area, a lower liquid storing area, a filter screen groove, a window, a sticky core and a flow outlet, wherein the flow inlet is formed in the top of the filter and used for guiding molten iron into the filter; the upper liquid storing area and the lower liquid storing area are arranged below the flow inlet and used for reducing flow speed of iron liquid and enlarging the contact area between the molten iron and a filter screen, the filter screen groove is formed between the upper liquid storing area and the lower liquid storing area, the cross section of the filter screen groove is rectangular, the boundary size of the filter screen groove is larger than the section size of the liquid storing areas, the filter screen groove is used for bearing a filter screen, the window is arranged on the side face of the width direction of the filter screen groove, and used for inserting the filter screen into the filter screen groove, the sticky core is installed on the window in a clearance fit manner, the flow outlet is formed in the lower portion of the lower liquid storing area, the flow outlet and the flow inlet are distributed symmetrically with the filter screen groove as an axis, and the flow outlet is used for connecting flow input points of a casting cavity. A filtering system utilizes the multiple filters to be combined in many forms to be suitable for producing castings of different structure shapes and various weights.

Description

technical field [0001] The present invention relates to the technical field of casting, and more particularly, to a filtering system for casting molds. Background technique [0002] In the casting production process, in order to improve the quality of the molten iron entering the mold cavity, a filter screen is often used in the design of the casting process. The filter screen is placed in the filter system. In order to improve the filtering effect, the filter screen is generally designed close to the inlet of the mold cavity. For the traditional casting process, due to the constraints of the mold draft angle and the material withdrawal method, the filter system that can be selected has a single structure and a process flow. long and consumes a large amount of molten iron. In order to filter impurities in molten iron, the filter system has a larger cross-sectional area than other parts of the gating system. Therefore, the filter system will increase the horizontal projecti...

AI Technical Summary

Problems solved by technology

In order to improve the filtering effect, the filter screen is generally designed near the inlet of the mold cavity. For the traditional casting process, due to the restriction of the mold draft angle and the material withdrawal method, the optional filter system has a single structure and a simple process flow. Long, consumes a lot of molten iron

In order to achieve the function of filtering impurities in molten iron, the cross-sectional area of ​​the filtration system is larger than that of other parts of the gating system. Therefore, the filtration system will increase the horizontal projected area of ​​the gating system, thereby increasing the amount of sand eaten above the gating system and increasing the cost.

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