Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Equal channel angular extrusion method

A technology of equal channel corner and extrusion method, which is applied in the field of channel corner extrusion, can solve the problems of easily damaged molds and irregular product shapes, and achieve the effects of inhibiting expansion, reducing punch breakage, and overcoming tonnage shortage

Active Publication Date: 2020-10-13
SOUTHWEST JIAOTONG UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The first object of the present invention is to provide a blank for equal channel angular extrusion, to solve the technical problem that the mold is easily damaged in the prior art
The second object of the present invention is to provide an equal channel angular extrusion method, which can easily solve the technical problem of irregular product shape caused by back pressure in the prior art

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
  • Equal channel angular extrusion method
  • Equal channel angular extrusion method
  • Equal channel angular extrusion method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] The cross-section of the green body for equal channel angular extrusion in this embodiment is square, including the sample layer 1 and the modified layer bonded to the side of the sample layer 1, and the hardness of the modified layer is lower than that of the sample layer. The hardness of layer 1, the tensile strength of the modified layer is less than the tensile strength of the sample layer 1; the yield strength of the modified layer is less than the yield strength of the sample layer 1. The sample layer 1 is an iron plate. The modified layer is a polymer sheet, and the polymer sheet is an HDPE sheet. The surface of the green body is provided with a lubricating layer, and the lubricating layer is molybdenum disulfide lubricant.

[0066] Such as figure 1 As shown, the modified layer includes a first modified layer 21 and a second modified layer 22 respectively arranged on a group of opposite sides of the sample layer 1, and the first modified layer 21 and the second...

Embodiment 2

[0069] Compared with Example 1, the green body for equal channel angular extrusion in this example has the difference that: the sample layer 1 is an iron plate. The modified layer is a polymer sheet, and the polymer sheet is a PP sheet.

Embodiment 3

[0071] Compared with Example 1, the green body for equal channel angular extrusion in this example has the difference that: the sample layer 1 is a tantalum plate. The modified layer is a polymer sheet, and the polymer sheet is a PE sheet.

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

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses an equal channel corner extrusion method. The channel angular extrusion method includes steps: (1) extruding the green body: putting the green body into the extrusion section of the L channel and being extruded to the forming section; (2) pushing out the green body: putting the granular material into Squeeze in the extrusion section so that the green body is pushed out of the discharge port of the forming section; (3) Take out the granular material. First of all, the extruded particles can be hollowed out by extending the strips into the forming section without forming back pressure, that is, when the green body is extruded each time, there is no residue of the last extrusion in the L channel, so that The green body is always the first to be extruded, and the shape of the obtained green body is not a parallelogram or a rhombus, but a regular cuboid shape, which will not cause waste of materials, and can reduce the grinding time when performing multi-pass extrusion. Secondly, the loading force required for the extrusion of granular materials is significantly smaller than the extrusion force of the back pressure method, which can significantly save energy consumption.

Description

technical field [0001] The present invention relates to the technical field of equal channel angular extrusion, in particular to an equal channel angular extrusion method. Background technique [0002] Large plastic shear deformation technology, as an important grain refinement method for metal deformation, can effectively improve the grain size of materials, regulate the microstructure (orientation, grain boundary misorientation, etc.) of metal materials, and improve the quality of metal materials. Hardness, improve the destructive strength of metal materials. During the large plastic deformation process of metal materials, the material produces higher density dislocations, and causes dislocation accumulation, entanglement, rearrangement, etc. A large number of dislocation entanglements, dislocation cells, and high-density dislocation walls are formed inside the material, resulting in the formation of sub-grains during the deformation process of the material, which are fin...

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 Patents(China)
IPC IPC(8): B21C23/00
CPCB21C23/001
Inventor 佘其海吴瑶瑶李超卢磊
Owner SOUTHWEST JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com