Open type heating and heat preservation hopper for reducing oxide inclusions and pouring method

Abstract

The invention relates to an open type heating and heat preservation hopper for reducing oxide inclusions and a pouring method. The problems that in the prior art, the oxide inclusion defect of a casting poured by a hopper for tilting casting is serious, and the heat preservation effect of the hopper is not ideal are solved. The open type heating and heat preservation hopper comprises a hopper outer lining, a hopper body and a pouring cup; a cavity with an opening in the top is formed in the hopper body, and the cavity is sequentially divided into a liquid inlet cavity and a liquid containing cavity according to the flowing direction of molten metal; by designing the shape of the cavity wall of the liquid inlet cavity and the shapes and the sizes of a liquid inlet and a liquid outlet, it is ensured that the liquid inlet cavity is approximately filled with the molten metal in the flowing process below the pouring cup, and meanwhile it is ensured that the molten metal stably enters the liquid containing cavity; by designing the structures and shapes of a pouring gate and the liquid containing cavity, the stability of the process of filling a casting mold cavity with the molten metal is guaranteed; by using the open type heating and heat preservation hopper for pouring, the oxide inclusion defect of the casting can be effectively reduced, the temperature of the molten metal in the open type heating and heat preservation hopper can be maintained in the pouring process, the heat loss of the molten metal in the hopper is reduced, and the quality of the casting is ensured.

Description

technical field [0001] The invention belongs to the technical field of tilting casting mold process equipment design, and relates to an open heating and heat preservation hopper for reducing oxidation inclusions and a pouring method, in particular to an open heating and heat preservation function for reducing oxidation inclusions. Tilting casting hopper and pouring method using the hopper. Background technique [0002] There are two main types of existing tilting casting hoppers: one is a hopper made of an inner steel plate, an outer steel plate, and a hollow layer between the two steel plates filled with insulating materials. The role of the casting has a certain heat preservation ability, but it has no heating function. During the solidification process of the casting, the heat loss of the hopper is relatively large, resulting in a rapid drop in the temperature of the molten metal in the hopper. At the same time, it is very easy to produce oxidized slag inclusions during ...

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Problems solved by technology

[0003] In order to solve the problem of serious oxidation inclusion defects and unsatisfactory insulation effect of the hopper in the castings poured by the tilting casting hopper in the prior art, the present invention provides an open heating and heat preservation hopper and a pouring method for reducing oxidation inclusions. Hopper pouring can effectively reduce the oxidation and inclusion defects of castings, and can maintain the temperature of molten metal in the hopper during pouring, reduce the heat loss of molten metal in the hopper, and ensure the quality of castings

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