Variable cross-section rotary extrusion mold and using method thereof

A technology of changing section and die, applied in the field of material extrusion, can solve the problems of low forming efficiency and many processes, and achieve the effect of improving forming efficiency, simple equipment and easy control.

Inactive Publication Date: 2017-10-24
XIJING UNIV
View PDF1 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the above-mentioned prior art, the present invention aims to provide a variable cross-section rotary extrusion die and its use method, so as to solve the problems of numerous procedures and low forming efficiency in the current preparation method of fine-grained materials

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Variable cross-section rotary extrusion mold and using method thereof
  • Variable cross-section rotary extrusion mold and using method thereof
  • Variable cross-section rotary extrusion mold and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0022] Example: The preform is a cylinder with a circular cross-section having a diameter of 10 mm and a length of the cylinder of 45 mm.

[0023] refer to figure 1 As shown, a rotary extrusion die with variable cross-section includes a punch 1 and a die 2, the diameter of the circular cross section of the punch 1 is 10mm, and the length of the punch 1 is 75mm.

[0024] refer to figure 2 As shown, a molding cavity is provided in the die 2; the molding cavity includes an introduction section 3, the diameter of the cross section of the introduction section 3 is 10 mm, and the length of the introduction section 3 is 60 mm; the lower end of the introduction section 3 is connected to a multi-stage The upper end of the threaded section 4 of the rotary extrusion section, the lower end of the threaded section 4 of the multistage rotary extrusion section is connected to the lead-out section 5, the upper end surface of the threaded section 4 of the multistage rotary extrusion section ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A variable cross-section rotary extrusion die and its use method, including a punch and a die, the die is provided with a forming cavity; the forming cavity includes an introduction section, and the lower end of the introduction section is connected to a threaded section of a multi-stage rotary extrusion section The upper end of the threaded section of the multi-stage rotary extrusion section is connected to the outlet section; the punch is set in the introduction section; when in use, the punch squeezes the first preformed blank, and when the punch coincides with the introduction section, the extrusion device is closed ; Open the extrusion device again, when the punch comes out from the forming cavity of the die completely, place the second pre-deformed blank in the introduction section of the forming cavity of the die, open the extrusion device, the punch and the introduction When the lower end surfaces of the segments are overlapped, the extrusion device is closed, and the second pre-deformed billet will squeeze the first pre-deformed billet out of the forming cavity of the die, and the first pre-deformed billet passes through the introduction section, the multi-stage rotary extrusion section, and the threaded section in turn. 1. Deformation of the lead-out section to complete the variable cross-section rotary extrusion deformation of the first preformed blank; the invention has the advantages of simple process and high forming efficiency.

Description

technical field [0001] The invention belongs to the technical field of material extrusion, and in particular relates to a rotary extrusion die with variable cross-section and a using method. Background technique [0002] Upsetting is a basic forming method for plastic forming of metal materials. Upsetting can effectively refine the material structure and improve the comprehensive properties of the material. But in the upsetting process of the material, the drum shape is easy to appear. In order to improve the drum shape, the stacked upsetting method can improve the uneven forming of the material to a certain extent, and greatly increase the upsetting ratio (Journal of Nanchang Aeronautical Industry Institute, 2004, (1):34-38; Forging Equipment and Manufacturing Technology, 2008, (6):59-61). [0003] Combining upsetting and extrusion improves the forming efficiency to a greater extent. The invention patent application with the publication number CN1827829A proposes a method ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B21C25/08B21C23/00B21C23/14
CPCB21C25/08B21C23/001B21C23/14
Inventor 雷同飞党波罗杰孟培媛
Owner XIJING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products