An Extrusion Forming Method of "Big Belly and Small Mouth" Type Branch Light Alloy Components

An extrusion forming, light alloy technology, applied in the direction of metal extrusion mandrel, metal extrusion die, etc., to meet the final size and performance requirements, the effect of good metal stress state

Active Publication Date: 2019-05-03
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to aim at the defects and deficiencies of the prior art, and provide a method for extrusion forming of branch-like light alloy components with a "big belly and small mouth", using the hot extrusion compression opening forming method to realize the "big belly and small mouth" complex The precision plastic forming of branch components can effectively overcome the problems caused by the existing traditional processing and manufacturing methods, improve the formability of light alloys, improve the comprehensive mechanical properties of formed components, greatly improve the utilization rate of materials, save energy and reduce consumption

Method used

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  • An Extrusion Forming Method of "Big Belly and Small Mouth" Type Branch Light Alloy Components
  • An Extrusion Forming Method of "Big Belly and Small Mouth" Type Branch Light Alloy Components
  • An Extrusion Forming Method of "Big Belly and Small Mouth" Type Branch Light Alloy Components

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Embodiment Construction

[0048] Below in conjunction with accompanying drawing, the present invention will be further described.

[0049] see Figure 1-2 As shown, the technical solution adopted in this specific embodiment is: it includes an upper mold assembly connected with the upper structure of the press, a lower mold assembly connected with the lower structure of the press, an ejector device, a feeding device 7 and a split type Internal and external support components; the upper mold component is arranged above the lower mold component; a split-type internal and external support component is arranged between the upper mold component and the lower mold component; the ejector device is located below the lower mold component, and Clearance fit connection; the top of the ejector device is in contact with the split inner and outer supports, and the end is connected with the ejector cylinder; the feeding device is fixed above the lower mold assembly, and is located between the upper mold assembly and t...

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Abstract

The invention discloses an extrusion molding method of a large-belly and small-mouth branch light alloy component. The method comprises the following steps: (1) preparation before molding: a light alloy cylindrical part and an extrusion molding mold are totally preheated; the extrusion molding mold mainly comprises an upper mold module, a lower mold module, an ejection device and split inner and outer support modules; a molding angle is arranged on a convex mold of the upper mold module, and is transited from small to big and from big to small; the split inner and outer support modules are arranged between the upper mold module and the lower mold module; the ejection device is arranged below the lower mold module, and is connected with the lower mold module in a clearance fit manner; and the top end of the ejection device is contacted, matched and connected with the split inner and outer support modules; (2) molding process: the light alloy cylindrical part is deformed by three phasesunder the effect of convex mold pressure: (1) a radial micro-necking deformation phase, (2) a radial large-necking deformation phase, and (3) a final molding phase; and (3) a necking cylindrical partis taken down after the extrusion molding is finished.

Description

technical field [0001] The invention relates to the technical field of plastic processing and forming of metal materials, in particular to an extrusion forming method of a "big belly and small mouth" type branch light alloy component. Background technique [0002] With the rapid development of my country's aerospace technology, high-tech weaponry and marine development, complex branch components (twig components refer to parts that protrude in the direction of material radius) are more and more widely used in various fields. ; Such as missile and satellite wing cabin sections with ribs or bosses, deep-water equipment shells (deep-sea exploration or operating cabins greater than 1,000 meters, deep-sea torpedo shells), missile fins for weaponry, artillery brackets, Forgings with complex shapes, such as armored vehicle bodies, etc., with holes and flanges in multiple directions. Among the branch components, there are many "big belly and small mouth" parts (that is, the diameter ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C25/08
Inventor 于建民张治民刘泽赵熹徐健程少博
Owner ZHONGBEI UNIV
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