公开(公告)号：US11752548B2

公开(公告)日：2023-09-12

申请号：US17413762

申请日：2019-12-02

Applicant: ZHUHAI RUNXINGTAI ELECTRICAL CO., LTD

Inventor： Ying Zhang ,  Jie Tan ,  Jicheng Wang ,  Gunan Li ,  Ziqiang Huang ,  Huaide Ren

IPC: B22D43/00 ,  B22F1/148 ,  B22D1/00 ,  B22D17/00 ,  B22D27/02 ,  C22F1/04 ,  B22F9/08

CPC classification number: B22D43/004 ,  B22D1/00 ,  B22D17/007 ,  B22D27/02 ,  B22F1/148 ,  C22F1/04 ,  B22F9/08

Abstract: A die casting method includes stirring an aluminum alloy liquid in a stirrer under an airtight vacuum condition. The stirrer includes an electromagnetic inductor and a stirring rod. The aluminum alloy liquid is simultaneously subjected to an electromagnetic stirring in a direction of a magnetic field generated by the electromagnetic inductor and a mechanical stirring under a rotation action of the stirring rod. The aluminum alloy liquid is stirred for 20-80 minutes until the aluminum alloy liquid becomes semisolid to obtain a semisolid aluminum alloy slurry. The method further includes injecting the semisolid aluminum alloy slurry into a filter die to perform die casting molding at an injection speed of 1.5-2.5 m/s, an injection specific pressure of 30-80 MPa, a pressurization pressure of 60-80 MPa, and a temperature of the filter die of 250-400° C., and maintaining pressure for 7-30 seconds to obtain the filtering cavity.