公开(公告)号：US20210062304A1

公开(公告)日：2021-03-04

申请号：US16962224

申请日：2019-08-14

Applicant: ZHUHAI RUNXINGTAI ELECTRICAL CO., LTD

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

IPC: C22C21/02 ,  B22D17/00 ,  C22C1/00 ,  C22C1/06 ,  C22C1/10

Abstract: The present invention provides a high thermal conductivity aluminum alloy, which comprises the following components in percentage by weight: Al: 80%-90%; Si: 6.5%-8.5%; Fe: 0.2%-0.5%; Zn: 0.8%-3%; V: 0.03%-0.05%; Sr: 0.01%-1%; graphene: 0.02%-0.08%. In the high thermal conductivity aluminum alloy of the present invention, alloying elements including Si, Fe, and Zn are optimized; Sr, V, graphene, among others are added. The amount of each component is controlled so that they coordinate to ALLOW high thermal conductivity, good casting performance and excellent semi-solid die-casting property. Graphene is introduced to the high thermal conductivity aluminum alloy of the present invention to exploit the good thermal conductivity of graphene, allowing the formation of a high thermal conductivity aluminium alloy.

公开(公告)号：US11898224B2

公开(公告)日：2024-02-13

申请号：US16962224

申请日：2019-08-14

Applicant: ZHUHAI RUNXINGTAI ELECTRICAL CO., LTD

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

IPC: C22C21/02 ,  B22D17/00 ,  C22C1/06 ,  C22C1/10 ,  C22C1/12

CPC classification number: C22C21/02 ,  B22D17/007 ,  C22C1/06 ,  C22C1/1036 ,  C22C1/12 ,  C22C1/1073

Abstract: The present invention provides a high thermal conductivity aluminum alloy, which comprises the following components in percentage by weight: Al: 80%-90%; Si: 6.5%-8.5%; Fe: 0.2%-0.5%; Zn: 0.8%-3%; V: 0.03%-0.05%; Sr: 0.01%-1%; graphene: 0.02%-0.08%. In the high thermal conductivity aluminum alloy of the present invention, alloying elements including Si, Fe, and Zn are optimized; Sr, V, graphene, among others are added. The amount of each component is controlled so that they coordinate to ALLOW high thermal conductivity, good casting performance and excellent semi-solid die-casting property. Graphene is introduced to the high thermal conductivity aluminum alloy of the present invention to exploit the good thermal conductivity of graphene, allowing the formation of a high thermal conductivity aluminium alloy.

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.