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Continuous SPD (severe plastic deformation) method, used equipment and application of method

A large plastic deformation and equipment technology, applied in the field of plastic processing and forming, to achieve the effect of uniform product structure and performance

Active Publication Date: 2017-06-13
内蒙古蒙东高新集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the shortcomings of existing large plastic deformation methods, and provides a continuous large plastic deformation method

Method used

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  • Continuous SPD (severe plastic deformation) method, used equipment and application of method
  • Continuous SPD (severe plastic deformation) method, used equipment and application of method
  • Continuous SPD (severe plastic deformation) method, used equipment and application of method

Examples

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Embodiment 1

[0038] First, the continuous casting and rolling 1050 aluminum alloy disc rod material with a diameter of d = 9.5mm is continuously extruded into an extruded product with a diameter of D = 15mm by using the expansion die technology, the extrusion wheel speed is 22rpm, and the extrusion outlet temperature The temperature is 460°C, and the die outlet is 1500mm into the water tank for cooling, drying, and winding; then, the extruded product with a diameter of D = 15mm is drawn into a wire rod with a diameter of d = 9.5mm after 8 passes; The surface of the drawn wire rod with a diameter of d=9.5mm is cleaned, rinsed and dried, and then continuously extruded under the same conditions into an extruded product with a diameter of D=15mm by using the expanding die technology. After 4 cycles like this, the tensile mechanical properties of the 1050 aluminum alloy after continuous extrusion and drawing of each pass were measured respectively. The results are shown in Table 1. It can be see...

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Abstract

The invention relates to a continuous SPD (severe plastic deformation) method, used equipment and an application of the method and belongs to the technical field of plastic working forming. A to-be-machined material with the equivalent diameter being d is made into an extruded product with the equivalent diameter being D through continuous extrusion; the extruded product with the equivalent diameter being D is drawn to form a to-be-machined material with the equivalent diameter being d; then, repeated extrusion and drawing are performed until the nominal cumulative dependent variable reaches a set value. The method is simple in process and simple to control, the product has excellent performance, and the method can be widely applied to industrial production of long pipes, rods, profiles and wire rods in small and medium specifications.

Description

technical field [0001] The invention relates to a method for continuous large plastic deformation, the equipment used and the application thereof, and belongs to the technical field of plastic processing and forming. Background technique [0002] Studies have shown that: the large plastic deformation process can make metals and their alloys obtain sub-micron crystals, or even nano-crystals, thereby greatly improving the comprehensive properties of metal materials. In recent years, many novel large plastic deformation methods have been proposed and developed. In recent decades, the large plastic deformation (Severe plastic deformation, SPD), which has attracted much attention, can obtain extremely fine or even nanocrystalline structures for metals or alloys, thereby greatly improving Improving the mechanical properties of metal materials has been developed rapidly. Commonly used large plastic deformation techniques include equal radial angular extrusion (ECAP), repeated stac...

Claims

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Application Information

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IPC IPC(8): B21C23/00B21C1/02
CPCB21C1/02B21C23/001B21C23/005
Inventor 季金力张添胡加敏季显坤傅定发张辉
Owner 内蒙古蒙东高新集团有限公司
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