Negative pressure drainage type casting and forging forming device and method for metal material

Abstract

The invention provides a negative pressure drainage type casting and forging forming device for a metal material. The negative pressure drainage type casting and forging forming device comprises an electromagnetic heater, a liquid lifting device, a high-pressure casting piston, a melting furnace, a mold cavity, an ejection mechanism, a left mold, a negative pressure pumping device, a right mold, a mold control mechanism, an air guide hole, a cavity and a forging and pressing device. Wherein the mold cavity is connected with a negative pressure pumping device; the outer surface of the mold cavity is coated with an electromagnetic heater; one end of the liquid lifting device is connected with the feeding end of the mold cavity, and the other end of the liquid lifting device is inserted into the melting furnace. A high-pressure casting piston is arranged at a feeding port of the mold cavity; a left mold and a right mold are respectively arranged at the left end and the right end in the mold cavity; one end of the right mold is connected with a shape control mechanism; and a forging and pressing device is arranged beside the shape control mechanism. According to the device, a metal product is formed through the melt negative pressure pumping drainage-high-pressure extrusion casting-continuous forging technology, the structure of a casting can be remarkably improved, and the comprehensive performance of the product is improved.

Description

technical field [0001] The invention relates to the technical field of metal material preparation and processing, in particular to a negative pressure drainage casting and forging forming device and method for metal materials. Background technique [0002] With the development of social economy and the advancement of science and technology, the shape of metal materials is becoming more and more complex, and the requirements for performance are getting higher and higher. The casting and forging composite forming technology combines casting and forging to learn from each other, and can form high-performance complex-shaped parts. The technology breaks through the limitations of traditional casting forming technology. By combining the advantages of each forming technology, it makes up for the limitations of a single forming technology and can obtain high-quality metal parts. [0003] Existing casting and forging composite forming technologies include liquid direct die casting an...

AI Technical Summary

Problems solved by technology

The combined casting and forging process uses traditional casting methods to prefabricate casting billets, and obtains die forgings with complex shapes and high quality through die forging. Casting and forging are carried out separately. Provided, the shape of the billet is flexible, and the size and volume can be reasonably allocated; the casting-extrusion-forging composite forming process is an organic combination of casting, extrusion and forging. The forging billet is finally formed by forging after heating. The above process solves the forming problem of parts with a slightly complex shape and high mechanical properties. However, the melt in the atmospheric environment is likely to cause problems such as entrainment, transfer, and casting.

At the same time, problems such as turbulent flow, impact and splash of molten metal cannot be avoided during the filling process of molten metal, resulting in low performance and poor quality of the final product

[0004] To sum up, although the existing casting-forging composite forming technology has solved the forming problems of some parts, the current molten metal is likely to cause problems such as entrained air and slag during the scooping and melt transfer process, and it is easy to cause problems during the filling process. Melt impact and splashing occur, resulting in defects such as entrainment and oxidation of the melt

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