Metal material large-strain processing method based on multi-pair wheel rolling and equal channel corner extrusion

A technology of equal-channel corners and metal materials, which is applied in the field of cold processing of metal materials, can solve the problems of continuous production that is difficult to industrialize, difficult to achieve the same large strain in the cross-section, and small texture orientation control degree of deformed materials. The effect of reducing, reducing fracture, and increasing deformation

Active Publication Date: 2011-06-22
JIANGSU UNIV
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the rolling deformation of the current multiple pairs of wheels is small, it is difficult to realize the equivalent large strain of the cross-section and the control degree of the texture orientation of the deformed material is small, and the continuous production of the equal-channel angular extrusion is difficult and cannot be industrialized. To solve the problem, design a method that combines the characteristics of the two. First, use multiple pairs of wheels to deform the bad material to the designed thickness, and then use the good dynamic performance of multiple pairs of wheels to continuously send the rolled billet into the equal-channel angular extrusion die. A processing method for large strain processing and continuous output of finished metal materials, that is, a large strain processing method for metal materials based on multi-pair rolling and equal channel angular extrusion

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
  • Metal material large-strain processing method based on multi-pair wheel rolling and equal channel corner extrusion
  • Metal material large-strain processing method based on multi-pair wheel rolling and equal channel corner extrusion
  • Metal material large-strain processing method based on multi-pair wheel rolling and equal channel corner extrusion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: The blank is made of annealed industrial pure aluminum, wherein the rolling strain is 1.75 (80% of the pressing amount), and the ECAP strain is 0.8. After deformation processing, the dislocation density of the material is 0.13×10 14 m -2 , Yield strength increased by 60%, hardness increased by 46%.

Embodiment 2

[0023] Example 2: The billet is annealed 5052 aluminum, the rolling strain is 0.4 (the pressing amount is 50%), and the ECAP strain is 0.8. After deformation processing, the dislocation density of the material is 2.636×10 14 m -2 , Yield strength increased by 140%, hardness increased by 90%.

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

The invention discloses a metal material large-strain processing method based on multi-pair wheel rolling and equal channel corner extrusion. The metal material large-strain processing method is characterized by comprising the following steps: firstly, blanks passes through multiple pairs of rolling wheels driven by power, and the gap between each pair of rolling wheels is adjusted so that the blanks reaches the designed thickness after being rolled by multiple pairs of rolling wheels; secondly, equal channel corner extrusion dies are installed at the outlets of the last pair of rolling wheels so that the blanks reaching the designed thickness through the rolling of the rolling wheels are continuously sheared and deformed under the drive of the last pair of rolling wheels and the extrusion of the dies and then are extruded out of the dies after turning an angle of 45 to 90 degrees in the original heading direction. The invention integrates the advantages of a multi-pair wheel rollingtechnique and an equal channel corner extrusion technique, is especially suitable for the large-strain deformation processing of thin plates, and can realize energy-saving, high-efficiency, continuous and uniform large-strain deformation processing of metal materials.

Description

technical field [0001] The present invention relates to a cold processing method of metal materials, especially a large strain processing method using cold extrusion and strong deformation to obtain high-performance materials, specifically a method based on multi-pair rolling and equal-channel angular extrusion Large strain processing method of metal materials. Background technique [0002] As we all know, the amount of strain is an important parameter that determines the structure and properties of metal materials after deformation processing. Through the use of strong plastic deformation, that is, large strain deformation processing of metal materials, it has become one of the important means to improve material structure, improve material performance and prepare high-performance new materials. [0003] At present, the technologies for realizing large-strain deformation processing of metal materials mainly include multi-pair rolling technology and equal channel angular pr...

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): C21D7/02C22F1/00
Inventor 许晓静程晓农王宏宇姜玉杰王浩张增雷崇凯刘桂玲
Owner JIANGSU 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