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A method for preparing a plate with directional tissue

A plate and structure technology, which is applied in the field of devices for preparing plates with directional structure, can solve the problems of low preparation efficiency and difficulty in preparing directional solidification materials, and achieve the effects of uniform distribution of plate components, stable mechanical properties and simple methods.

Active Publication Date: 2020-10-16
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in traditional directional solidification furnaces, it is often difficult to prepare directional solidification materials with large cross-sectional sizes due to the reason that the cold end is side heat dissipation.
In addition, the pull-down rate of the directional solidification furnace is usually on the order of microns per second, and the production efficiency is low
[0003] And the application number is 201410223932.2, titled "thin-layer rapid solidification forming device and method". The organization is not directionally solidified, and has both equiaxed and columnar crystals

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 2

[0022] Embodiment 1 The secondary cooling device is a circulating gas cooling device

[0023] The method for preparing a plate with directional tissue by using the above-mentioned device includes the following steps:

[0024] (1) input the motion parameter of three-dimensional mobile platform 3 in microcomputer control system 11;

[0025] (2) charge a certain amount of inert gas into the vacuum chamber 9;

[0026] (3) Add the metal that needs to be smelted in the crucible 12, then seal the crucible sealing device 14, and adjust the pressure in the crucible system and the vacuum chamber 9 by the microcomputer control system 11;

[0027] (4) set respectively in the microcomputer control system 11 the temperature control parameters of the material heating device 13 in the crucible system, the temperature control parameters of the heating device 18 of the discharge port 1, and the temperature and the ejection speed of the gas outlet 7 ejection;

[0028] (5) After all the metals ...

Embodiment 1-1

[0030] (1) According to the size of the prepared 316L stainless steel with directional solidification structure (length, width and height are respectively 100cm×30cm×1cm), the motion parameters of the three-dimensional mobile platform in the microcomputer control system are first set as Vx=0.5m / s , Vy=0.5m / s, Vz=0.1mm / s, and the speed at which the molten metal is ejected from the discharge port is 0.5m / s, then add 10Kg of stainless steel 316L to the crucible system;

[0031] (2) After adding raw materials and installing the crucible sealing device, adjust the pressure in the crucible chamber to 1.2 atm through the microcomputer control system, and reduce the vacuum degree in the vacuum chamber to 10 -4 Pa, then add a certain amount of nitrogen into the vacuum chamber until the pressure in the vacuum chamber is 1 atm;

[0032] (3) After the above steps are completed, set the heating program of the crucible equipped with stainless steel 316L through the microcomputer control sys...

Embodiment 2 2

[0034] Embodiment 2 The secondary cooling device is a cooling plate

[0035] The method for preparing a plate with directional tissue by using the above-mentioned device includes the following steps:

[0036] (1) input the motion parameter of three-dimensional mobile platform 3 in microcomputer control system 11;

[0037] (2) charge a certain amount of inert gas into the vacuum chamber 9;

[0038] (3) Add the metal that needs to be smelted in the crucible 12, then seal the crucible sealing device 14, and adjust the pressure in the crucible system and the vacuum chamber 9 by the microcomputer control system 11;

[0039] (4) In the microcomputer control system 11, respectively set the temperature control parameters of the material heating device 13 in the crucible system, the moving speed of the cooling plate and the lower pressure;

[0040] (5) After all the metals in the crucible 12 are melted, start the three-dimensional mobile platform 3 and the cooling table 2, and recipr...

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Abstract

The invention discloses a device and method for manufacturing a plate with a directional structure. The device for manufacturing the plate with the directional structure comprises a material storing system with the bottom end provided with a material outlet, a three-dimensional moving platform located below the material storage system and a cooling platform arranged on the three-dimensional movingplatform and used for conducting laying casting on materials stored in the material storing system, wherein one side or two sides of the material storing system is or are provided with a secondary cooling device or secondary cooling devices. When the device is used for manufacturing the plate, after the material storing system processes the materials, the materials flow out through the material outlet, the three-dimensional moving platform is adjusted to move, the materials in the material storing system is spread in layers on the cooling platform, the materials are further cooled and rolledthrough the secondary cooling device, and then the plate can be obtained. According to the device for manufacturing the plate with the directional structure, through combination and cooperation of the material storing system, the three-dimensional moving platform and the secondary cooling device, the plate of the directionally solidified structure can be produced, ingredient distribution of the plate is uniform, and the mechanical property of the plate is stable; and meanwhile, the method for producing the plate by the adoption of the device is simple, high in operability, high in productionefficiency and capable of achieving continuous production and saves resources

Description

technical field [0001] The invention belongs to the field of plate preparation, and in particular relates to a device and method for preparing plate with directional structure. Background technique [0002] Columnar crystals are the most common directional solidification structure. Due to its orientation, the performance of columnar crystals in one direction is obviously stronger than that in other directions. Structural materials and functional materials often use directional solidification furnaces to prepare directional solidified structures to improve their mechanical properties and electrical, magnetic, optical, thermal and other properties. However, in traditional directional solidification furnaces, it is often difficult to prepare directional solidification materials with large cross-sectional dimensions because the cold end is side-side heat dissipation. In addition, the pull-down rate of the directional solidification furnace is usually on the order of microns pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/06B22D11/12B22D11/124B22D11/22
CPCB22D11/0631B22D11/0642B22D11/0648B22D11/068B22D11/1206B22D11/1245B22D11/225
Inventor 张云虎叶春洋申严平郑红星宋长江翟启杰
Owner SHANGHAI UNIV
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