Title:
MICRO-SOLID-STATE MOLDING METHOD AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/257400
Kind Code:
A1
Abstract:
A micro-solid-state molding method, comprising the steps of: 1) using pressure to make the totality of a molten metal flow from within a holding furnace to a mold cavity by means of an intermediate pipeline; 2) controlling the pipe wall temperature of the intermediate pipeline on the intermediate pipeline, wherein the temperature of first molten metal of the totality of the molten metal distributed in a central part of the intermediate pipeline is higher than the liquidus temperature thereof, and the temperature of second molten metal of the totality of the molten metal distributed in a pipe wall part of the intermediate pipeline is lower than the liquidus temperature thereof; 3) arranging a stirring apparatus around the intermediate pipeline, so that grown solidified dendrites are broken, refined and dispersed in the totality of the molten metal to become nucleation cores when the totality of the molten metal is solidified; and 4) continuing to apply pressure to the totality of the molten metal in a micro-solid state, so that the totality of the molten metal flows into the mold cavity, and once a pouring process is complete, removing castings to prepare for the next mold pouring. And a micro-solid-state molding apparatus. By means of applying the molding process in the molding apparatus, the amount of nucleation cores in the molten metal is increased, gas content is reduced while ensuring good fluidity, and crystal grains are refined.
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Inventors:
YANG LINLONG (CN)
GUO HUITING (CN)
GUO HUITING (CN)
Application Number:
PCT/CN2021/137370
Publication Date:
December 15, 2022
Filing Date:
December 13, 2021
Export Citation:
Assignee:
SUZHOU MINGZHI TECHNOLOGY CO (CN)
International Classes:
B22D18/04; B22D1/00
Domestic Patent References:
| WO2005065866A1 | 2005-07-21 |
Foreign References:
| CN113579203A | 2021-11-02 | |||
| CN110831713A | 2020-02-21 | |||
| CN105583396A | 2016-05-18 | |||
| CN112828264A | 2021-05-25 | |||
| US4580616A | 1986-04-08 | |||
| US5730198A | 1998-03-24 | |||
| US20050126737A1 | 2005-06-16 |
Attorney, Agent or Firm:
NANJING JINGWEI PATENT & TRADEMARK AGENCY CO., LTD (CN)
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