Pouring device for high-pressure casting mold

Abstract

The invention provides a pouring device for a high-pressure casting product. The pouring device comprises a material cake (01), a cross gate (02), an inner sprue (03) and slag accumulating ladles (04). The pouring device is characterized in that the inner sprue (03) is in lap joint with the surfaces of cast parts (05) and is arranged with the shape changed along the surfaces of the cast parts (05); the cross gate (02) comprises the input end connected to the material cake (01) and the two output ends connected with the inner sprue (03) correspondingly; and the cross sectional area, in the direction of the inner sprue (03), of the cross gate (02) is decreased step by step. The pouring device used for an aluminum alloy pressure casting mold has the advantages that washing of liquid aluminum to a mold core is avoided in the mold filling process, and pulling damage defects of products and the mold are reduced; meanwhile, the flowing smoothness of the liquid aluminum in a cavity is guaranteed, the exhausting performance of the cavity is good, and pore defects of the cast parts are remarkably reduced; and the pouring gate and exhausting structural design is reasonable, the quality of the products and the mold is guaranteed, and the production effects are improved.

Description

technical field [0001] The invention relates to the field of aluminum alloy high-pressure casting, in particular to a gating system for high-pressure casting molds. Background technique [0002] Mold is an indispensable process equipment in modern industry, especially automobile, radio, aviation, instrument, daily necessities and other industries. The gating system of the high-pressure casting mold is a distribution channel for the aluminum liquid to flow from the injection chamber to the cavity. The quality of runners and exhaust systems has a very important impact on the quality and production efficiency of die castings. [0003] The sprue structure of the mold needs to be comprehensively laid out according to the structural characteristics of the product. It is necessary to ensure the smooth flow of the aluminum liquid in the cavity and avoid air hole defects inside the product. Strain defects and improve mold life, so a reasonable gating system is extremely important f...

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Problems solved by technology

[0004] At present, the sprue structure (shown in Example 2) used can better avoid the strain defect on the surface of the casting and control the pore defect of the product, but the two ingates (09) shown in Example 2 are arranged on the casting structure. On one side, the adjustable area of ​​the ingate (09) is limited by the product structure (08). Once porosity defects appear in production and the performance cannot be improved in the process, it is not easy to optimize the ingate of the mold. Structural improvement defects (it is difficult to reduce the filling rate by increasing the area of ​​the ingate without increasing the filling time, and improve the cavity exhaust situation)

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