Integral extrusion forming method of light alloy shell body complex inner ring rib

Abstract

The invention discloses an integral extrusion forming method of a light alloy shell body complex inner ring rib. The invention relates to an integral extrusion forming mold of the light alloy shell body complex inner ring rib, the mode comprises a lower flexible filling body inner support, and the lower flexible filling body inner support adopts a soft material to be made into a sand mold according to the shape of the lower part of the inner ring rib; a light alloy cylindrical part and the mold are heated and subjected to heat preservation, then the light alloy cylindrical part is placed intothe mold, an extrusion forming inner ring rib stage is entered, when the stage is finished, a press machine drives the mold to be separated from the inner ring rib, the light alloy cylindrical part isseparated from the mold, and finally, the temperature is controlled to enable the lower flexible filling body inner support to be discretized. According to the method, a material utilization rate isgreatly improved, the problem of difficulty brought by using a valving inner support structure material when precise plastic forming is carried out is overcome, the problem of blockage during mold stripping is solved, so that the effect of protecting the mold is achieved, and the simultaneous forming of the inner ring rib during integral plastic forming of the large-scale complex light alloy shellbody component.

Description

technical field [0001] The invention relates to the technical field of plastic processing and forming of metal materials, in particular to a method for extrusion forming of inner ring ribs of large and complex light alloy shells. Background technique [0002] With the development of aerospace technology, the integration of large and complex light alloy shell components is becoming more and more intense. However, there are certain difficulties in the development of key complex shell components, which are manifested in: high development costs, long cycle time, low forming dimensional accuracy, mainly relying on machining to ensure accuracy; large and complex light alloy shell components are prone to defects during the forming process , large performance fluctuations, and unstable quality, resulting in low reliability and pass rate. The precise forming technology of key complex shell components in some advanced weapons and equipment has not yet been broken through in China, an...

AI Technical Summary

Problems solved by technology

[0006] In view of the above three problems, combined with the existing processing technology, the purpose of the present invention is to provide an integral extrusion forming method for complex inner ring ribs of light alloy shells, so as to realize the precision plastic forming of inner ring ribs of large complex light alloy shell components , the mold greatly improves the utilization rate of materials, overcomes the difficulties caused by the precision plastic forming of the support structure material in the split flap, and solves the jamming problem when the mold is released, thereby protecting the mold and realizing large and complex Simultaneous Forming of Inner Ring Ribs During Integral Plastic Forming of Light Alloy Shell Components

Images