Thin layer fast solidification forming device and method

A solidification molding and thin-layer technology, applied in the field of material processing, can solve the problems of low production efficiency, high production cost, unsuitable for large ingot production, etc., and achieve the effect of high production efficiency, low cost and uniform distribution of components

Active Publication Date: 2014-08-27
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current rapid cooling forming technology has low production efficiency and high production cost, and is not suitable for the production of large ingots

Method used

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  • Thin layer fast solidification forming device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] see figure 1 , the thin layer rapid solidification forming device layer by layer, including crucible sealing cover (1), crucible temperature measuring element (2), crucible (3), crucible heater (4), vacuum chamber (5), nozzle heater ( 6), nozzle (7), nozzle temperature measuring element (8), forced cooling platform (9), three-dimensional mobile platform (10), microcomputer control system (11), vacuum pump (12), characterized in that: the crucible is sealed The crucible system composed of cover (1), crucible temperature measuring element (2), crucible (3) and crucible heater (4) is fixed above the vacuum chamber (5); the upper end of the nozzle (7) communicates with the bottom of the crucible (3), Located in the vacuum chamber (5); the forced cooling platform (9) is located directly below the lower end of the nozzle (7) and connected to the upper part of the three-dimensional mobile platform (10); the three-dimensional mobile platform (10) is placed on the bottom of the...

Embodiment 2

[0023] This embodiment is basically the same as Embodiment 1, and the features are as follows:

[0024] The lower end of the nozzle (7) is in the shape of a narrow slit with a width of 0.1-100mm and a length of 1-2000mm. The flow rate of molten metal flowing out of the nozzle is controlled at 0-1000m / s. Temperature measuring elements (2, 8) connected to the microcomputer control system (11) are respectively placed inside the crucible (3) and on the outer wall of the nozzle (7), and heaters ( 4, 6). There is circulating cooling water in the forced cooling table (9), and the cooling water temperature is set to 20 o c. After the temperature is set in the microcomputer control system (11), the temperature can be controlled through the temperature measuring element and the heater connected to it; the microcomputer control system (11) stores the size data of the parts to be processed, and then the parts The three-dimensional model is layered, and then the displacement of the thr...

Embodiment 3

[0026] In this embodiment, the steps of preparing metal parts by adopting the thin-layer rapid solidification molding device of the present invention are as follows:

[0027] 1). Open the crucible cover (1), add 22 kg of Al-17%wt.Si alloy into the crucible (3), then input the part size 0.2m×0.2m×0.2m into the microcomputer control system (11), and Perform layering and trajectory setting;

[0028] 2). Seal the crucible lid (1) and the vacuum chamber (5), and evacuate;

[0029] 3). Set the heating temperature of the crucible in the microcomputer control system (11) to 750 oC , and then start the crucible heater (4) to melt the Al-Si alloy.

[0030] 4). In the microcomputer control system (11), set the nozzle heating temperature to 700 oC , and then start the nozzle heater (6) to heat the nozzle;

[0031] 5). Start the forced cooling platform (9) and the three-dimensional mobile platform (10), so that the thin metal layer flowing out of the slit-shaped nozzle is continuousl...

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Abstract

The invention relates to a thin layer fast solidification forming device and method. According to the device, a narrow-seam-shaped spraying nozzle is placed in a working cavity, and liquid metal thin layers continuously flow out of the spraying nozzle and fast solidified on a moving platform which continuously moves and performs forced cooling till parts of needed sizes are obtained. The device and method are high in production efficiency, relatively low in cost and suitable for production of large cast ingots.

Description

technical field [0001] The invention relates to a thin-layer rapid solidification forming device and method, belonging to the technical field of material processing. Background technique [0002] Materials are indispensable in human's daily life and production practice. With the advancement of human civilization, the requirements for the production process and final performance of materials are also gradually increasing. It is well known that the final properties of materials are determined by various defects, microstructure, phase composition and solute distribution in the material. Almost all materials, especially metal materials, will experience a solidification process from liquid to solid during the production and processing process, and the solidification process has a decisive impact on the final performance of the material. Therefore, the technology or processing technology to obtain the desired material properties by controlling the solidification process of mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D23/00
Inventor 张云虎申正焱苗信成宋长江翟启杰
Owner SHANGHAI UNIV
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