Title:
METHOD AND APPARATUS FOR MANUFACTURING EQUIAXED CRYSTAL ALUMINUM ALLOY CAST INGOT BY USING ADDITIVE MANUFACTURING AND RAPID SOLIDIFICATION TECHNIQUES
Document Type and Number:
WIPO Patent Application WO/2020/093276
Kind Code:
A1
Abstract:
A method and apparatus for manufacturing an equiaxed crystal aluminum alloy cast ingot by using additive manufacturing and rapid solidification techniques, the apparatus comprising: a metal heating mechanism and a negative pressure cooling mechanism. The metal heating mechanism is located above the negative pressure cooling mechanism and is connected thereto by means of a nozzle (5). The negative pressure cooling mechanism comprises a vacuum chamber (8) having an air inlet hole (12) and an air outlet hole (13), and a three-dimensional moving ingot mechanism disposed inside the vacuum chamber (8). The three-dimensional moving ingot mechanism comprises a moving ingot (18) and a two-dimensional moving platform (10) vertically connected to the moving ingot (18). A water cooling mechanism is disposed outside the moving ingot (18), and the moving ingot (18) is driven by a precision motor (11) to precisely move up and down. By changing the technological means from atomization and spraying to liquid-state injection, the density of the alloy ingot is improved, oxidization of the alloy ingot is reduced, the production efficiency of cast ingots is improved, and cast ingots of aluminum and alloy thereof having an equiaxed crystal structure without macroscopic element segregation can be rapidly prepared.
Inventors:
ZHANG JIAO (CN)
SUN BAODE (CN)
DONG QING (CN)
SUN BAODE (CN)
DONG QING (CN)
Application Number:
PCT/CN2018/114387
Publication Date:
May 14, 2020
Filing Date:
November 07, 2018
Export Citation:
Assignee:
UNIV SHANGHAI JIAOTONG (CN)
International Classes:
B22D23/00
Foreign References:
| CN108788102A | 2018-11-13 | |||
| CN104001906A | 2014-08-27 | |||
| CN1401450A | 2003-03-12 | |||
| CN108246993A | 2018-07-06 | |||
| CN103736946A | 2014-04-23 | |||
| JPS6457965A | 1989-03-06 |
Other References:
See also references of EP 3851224A4
Attorney, Agent or Firm:
SHANGHAI JIAODA PATENT AGENCY et al. (CN)
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