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Preparation method and device for three-dimensional (3D) gradient plates produced through multi-layer rolling and multi-point electric pulse treatment

A technology of electric pulses and plates, applied in metal rolling, metal rolling, metal processing equipment, etc., can solve the problems of high preparation requirements and complicated process flow

Inactive Publication Date: 2012-06-13
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problems of complex process flow and high preparation requirements in the prior art, the present invention provides a simpler process to produce high-strength plastic materials

Method used

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  • Preparation method and device for three-dimensional (3D) gradient plates produced through multi-layer rolling and multi-point electric pulse treatment
  • Preparation method and device for three-dimensional (3D) gradient plates produced through multi-layer rolling and multi-point electric pulse treatment
  • Preparation method and device for three-dimensional (3D) gradient plates produced through multi-layer rolling and multi-point electric pulse treatment

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Effect test

Embodiment 1

[0017] Such as figure 1 As shown, the present embodiment includes: a roll 1, a plate to be processed 2, an energizing device 3, a pulse power supply 4, a conductive block 5, a spring 6 and a wire 7, wherein there are two energizing devices 3, which are in the shape of the plate 2 to be processed. The distribution is symmetrical up and down, and the energizing device 3 and the plate 2 to be processed are parallel to each other, and the external pulse power supply 4 is connected to the energizing device 3 through a wire 7 .

[0018] Such as figure 2 As shown, the conductive part of the energization device 3 is distributed in an array on the entire energization device 3, and the array has a certain number. The conductive part is composed of a conductive block 5 and a spring 6. The head of the conductive block 5 is hemispherical, and the spring 6 is compressed. The conductive block 5 makes it closely contact with the surface of the plate 2 to be processed.

[0019] The plate 2 ...

Embodiment 2

[0022] The plate 2 to be processed in this embodiment is pure aluminum, the diameter of the roll 1 is 210mm, the rolling speed is 1.0m / min, the roll gap is 1mm, the peak current of the continuous pulse power supply is 900A, the duty ratio is 10%, and the frequency 150Hz, pulse width 50μs. There are five layers in the plate, and the grain sizes are 50 μm, 10 μm, 0.5 μm, 10 μm, and 50 μm.

[0023] This embodiment is the same as other implementations of Embodiment 1.

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Abstract

The invention discloses a preparation method and a device for three-dimensional (3D) gradient plates produced through multi-layer rolling and multi-point electric pulse treatment, which belong to the rolling field of metal materials. The device is composed of electrifying devices, a pulse power and a roller. The plates to be processed are of multi-layer composite structure, grains between different layers are in graded distribution in terms of size, and the plates are first rolled through the roller and then processed through electric pulse. Electricity is led to the rolled plates through the pair of symmetrical electrifying devices, and conductive parts of each electrifying device are distributed in array mode. In the three-dimensional directions, sizes of grains of the processed plates have the change of gradient. By designing a series of different lamination combination sequences and multi-point electric pulse distribution, plates of different microstructures can be obtained by means of control, then materials of high strength and high plasticity can be screened out, and meanwhile combination of layers can be enhanced through electric pulse annealing treatment.

Description

technical field [0001] The invention relates to the rolling field of metal materials, in particular to a preparation method and equipment for a 3D gradient plate caused by multi-layer rolling and multi-point electric pulse treatment. Background technique [0002] With the rapid development of the national automobile, high-speed rail, large aircraft and other manufacturing industries, we need both good plasticity and high strength for some related materials. This type of material is called high-strength plastic structural material. . The advantage of high-strength plastic structural materials is that they can ensure high strength while having high plastic deformation capacity, improving the impact resistance and bending performance of materials; at the same time, while ensuring safety indicators, reducing the weight of structural materials, Significantly reduce energy consumption. [0003] In recent years, ultra-fine-grained materials have become an important research and d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B47/00C21D10/00C22F3/00
Inventor 沈耀吕智马佳伟李奥金学军
Owner SHANGHAI JIAO TONG UNIV
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