Device and method for continuous forward extrusion and twist extrusion composite molding

A composite molding and positive extrusion technology, applied in the field of material plastic molding, can solve the problems of discontinuous processing and low production efficiency, and achieve the effects of reducing discontinuity, fewer production processes, and simple equipment

Inactive Publication Date: 2016-11-16
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the limitations of these processes are also obvious. For example, the final material needs to be cycled several times, and the cycle processing results in discontinuous processing and low production efficiency.

Method used

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  • Device and method for continuous forward extrusion and twist extrusion composite molding
  • Device and method for continuous forward extrusion and twist extrusion composite molding
  • Device and method for continuous forward extrusion and twist extrusion composite molding

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Embodiment Construction

[0028] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. In the interest of clarity and conciseness, not all features of an actual implementation are described in this specification. It should be understood, however, that in developing any such practical embodiment, many implementation-specific decisions must be made in order to achieve the developer's specific goals, such as meeting those system and business-related constraints and Restrictions may vary from implementation to implementation. Furthermore, it should be understood that development work, while potentially complex and time-consuming, would be a routine undertaking for those skilled in the art having the benefit of this disclosure.

[0029] Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the device structure and / or processing steps closely related to the solution according to the...

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Abstract

A device and method for continuous forward extrusion and twist extrusion composite molding belong to the technical field of machining. The device and method for continuous forward extrusion and twist extrusion composite molding are intended for solving the problems of many steps and high process requirements of an existing severe plastic deformation method, and have the following technical features: the device is constituted by three stages of extrusion passages; each stage of extrusion passages includes a forward extrusion passage and a twist extrusion passage; the forward extrusion passages allow reduction of the cross sectional area of a blank; after the blank passes through the three stages of extrusion passages, the cross sectional area of the blank is reduced gradually with gradual refining of grains, and therefore, a fine grain material is prepared. A preparation method provided by the present invention comprises the following steps: placing the device on a press machine and carrying out heating to a specified temperature; putting a blank into the device and then putting a punch thereinto; allowing the punch to go down to orderly complete forward extrusion and twist extrusion in each stage of extrusion passages, thus forming a final rectangular bar. The device and method for continuous forward extrusion and twist extrusion composite molding are used for composite molding of rectangular bars.

Description

technical field [0001] The invention relates to a large plastic deformation composite molding device and method, in particular to a continuous positive extrusion and extrusion twist composite molding device and method, and belongs to the technical field of material plastic molding. Background technique [0002] Due to its light weight and abundant reserves, magnesium alloys have great potential as structural materials and functional materials. Magnesium alloys are degradable and have good biocompatibility, making their application in medical implant materials promising. It has obvious advantages. The density and elastic modulus of magnesium alloy itself are similar to those of human bone. After natural degradation, it can avoid secondary surgical removal and is expected to replace traditional bone bonding materials. In order to obtain a bio-magnesium alloy bone plate material with excellent performance, three alloying elements, Zn, Ca and Mn, which are beneficial to the huma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C25/02B21C23/08B21C23/18
CPCB21C23/08B21C23/183B21C25/02
Inventor 于彦东李磊
Owner HARBIN UNIV OF SCI & TECH
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