Title:
PREPARATION METHOD FOR MOTOR ROTOR ALUMINUM ALLOY OF NEW ENERGY VEHICLE
Document Type and Number:
WIPO Patent Application WO/2023/077667
Kind Code:
A1
Abstract:
The present application relates to the field of new energy vehicle motors, and discloses a preparation method for a motor rotor aluminum alloy of a new energy vehicle, comprising the following steps: a. vacuumizing a vacuum induction furnace, preheating a crucible, adding an aluminum ingot into the crucible, heating to melt the aluminum ingot, keeping stirring, and cooling to enable aluminum to become a semi-solid state; b. heating to melt the aluminum, adding a first element component into the crucible, keeping stirring, and cooling until the mixture becomes a semi-solid state; c. heating to melt the mixture, adding a second element component into the crucible, keeping stirring, and keeping the temperature; and d. preheating a rotor mold cavity, exhausting, and performing centrifugal casting to obtain the motor rotor aluminum alloy. The aluminum ingot is melted under a vacuum condition by using a vacuum melting furnace, and molten metal is continuously stirred under the vacuum condition, so that impurities in molten aluminum can fully escape; and by combining multiple remelting and step-by-step addition of the element components, part of elements are protected from oxidation, thereby improving performance of the prepared motor rotor aluminum alloy.
Inventors:
ZHAO PEIZHEN (CN)
WEN CHUNGUO (CN)
ZHENG SHIYU (CN)
ZHENG GUANGHUI (CN)
WEN CHUNGUO (CN)
ZHENG SHIYU (CN)
ZHENG GUANGHUI (CN)
Application Number:
PCT/CN2022/070554
Publication Date:
May 11, 2023
Filing Date:
January 06, 2022
Export Citation:
Assignee:
SHANDONG BOYUAN PREC MACHINERY CO LTD (CN)
International Classes:
B22D13/04; B22D1/00; C22C1/02; C22C21/08
Foreign References:
| CN111004948A | 2020-04-14 | |||
| CN109022948A | 2018-12-18 | |||
| CN108796317A | 2018-11-13 | |||
| CN106480344A | 2017-03-08 | |||
| CN111206171A | 2020-05-29 | |||
| CN102581249A | 2012-07-18 | |||
| CN212560398U | 2021-02-19 | |||
| US20210108291A1 | 2021-04-15 |
Attorney, Agent or Firm:
BEIJING JUNHUI INTELLECTUAL PROPERTY AGENT OFFICE (ORDINARY PARTNERSHIP) (CN)
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