公开(公告)号：US11608867B1

公开(公告)日：2023-03-21

申请号：US17749724

申请日：2022-05-20

申请人： Shanxi Tangrong Machinery Manufacturing Co., Ltd.

发明人： Quanqing Cao ,  Hongbin Jin ,  Xiaoyan Wang ,  Haiyang Liu

IPC分类号： F16D65/10 ,  B22D13/04 ,  B22D19/16 ,  B22D27/02 ,  C22C37/06 ,  C22C37/10

摘要： The present disclosure discloses a high-strength and high-thermal conductivity new material composite brake drum and a preparation method thereof. The composite brake drum is composed of an outer layer of high-strength ductile iron and an inner layer of high-thermal conductivity gray cast iron, which are integrated by centrifugal compound casting. The outer layer of the composite brake drum is firstly poured on the production line of iron particle-filled coated sand shells. Due to the fast solidification and cooling of the iron particle-filled coated sand shells, the castings have the characteristics of fine and dense organization structures to ensure the high strength and high toughness of the ductile iron of the outer layer. On this basis, the inner gray cast iron is poured under centrifugal casting conditions, in which a good metallurgical bond between the inner and outer layers is achieved by controlling the centrifugal casting process.