Local loading forced feeding and core pulling device of large aluminum alloy extrusion casting mold

A technology of squeeze casting and local loading, applied in the field of feeding and core pulling devices, can solve the problems of insignificant pressure gradient pressure effect of components, no pressure effect, poor feeding effect, etc., to achieve simple structure, processing and manufacturing Low cost, easy disassembly and assembly
CN112958754AActive Publication Date: 2021-06-15HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2021-06-15

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Abstract

The invention discloses a local loading forced feeding and core pulling device of a large aluminum alloy extrusion casting mold, and relates to a feeding and core pulling device of an aluminum alloy extrusion casting mold. The invention aims to solve the technical problems that the pressure effect of some areas is not obvious or does not have the pressure effect due to pressure gradient existing in the extrusion casting forming process of a large component with non-uniform wall thickness, and shrinkage cavities and shrinkage porosity exist. According to the device, a mold feeding function and a core pulling function are combined, and a first-stage feeding mechanism and a second-stage feeding mechanism are provided; according to the two-stage feeding mechanism, an independent feeding mold oil cylinder is additionally arranged to work together with an original feeding mold oil cylinder, so that double-cylinder series feeding is realized; and the two-stage feeding mechanism is an extension of the first-stage feeding mechanism, the double cylinders can simultaneously progress and can also progress in a staggered manner, so that the process applicability is wide.
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Description

technical field

[0001] The invention relates to a feeding and core-pulling device for an aluminum alloy extrusion casting mold. Background technique

[0002] The internal quality of load-bearing components is very important to the performance of components. However, components with uneven wall thickness are prone to thermal knots, resulting in casting defects such as shrinkage cavities and porosity, which affect performance. Lifting has always been a research content in the field of material processing.

[0003] The blanks of formed components are mostly cast and forged, and there are various types of processes. Casting can form complex parts, but traditional casting methods have problems such as low yield and poor performance; through forging modification, the structure and performance of parts are significantly improved, and the quality is excellent, but it is difficult to form complex parts. Squeeze casting is a process of filling, solidification, crystallization and fe...

Claims

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