Abstract: A method of manufacturing a workpiece with multiple metal layers is disclosed as including steps (a) providing a mold with at least a runner and a cavity, (b) providing in the cavity of the mold a first metal layer made of a first metal, the first metal layer having a surface which is roughened and/or includes an engagement structure, and (c) injecting a molten second metal onto the surface of the first metal layer to form a second metal layer on the first metal layer in which the second metal layer engages with the roughened surface of the first metal layer or with the engagement structure of the surface of the first metal layer, and the molten second metal enters the cavity of the mold at a speed of at least 70 meters per second (m/s).

Abstract: A method of manufacturing a workpiece with multiple metal layers is disclosed as including steps (a) providing a mold with at least a runner and a cavity, (b) providing in the cavity of the mold a first metal layer made of a first metal, the first metal layer having a surface which is roughened and/or includes an engagement structure, and (c) injecting a molten second metal onto the surface of the first metal layer to form a second metal layer on the first metal layer in which the second metal layer engages with the roughened surface of the first metal layer or with the engagement structure of the surface of the first metal layer, and the molten second metal enters the cavity of the mold at a speed of at least 70 meters per second (m/s).

Abstract: A method of manufacturing a workpiece with multiple metal layers is disclosed as including steps (a) providing a mold with at least a runner and a cavity, (b) providing in the cavity of the mold a first metal layer made of a first metal, the first metal layer having a surface which is roughened and/or includes an engagement structure, and (c) injecting a molten second metal onto the surface of the first metal layer to form a second metal layer on the first metal layer in which the second metal layer engages with the roughened surface of the first metal layer or with the engagement structure of the surface of the first metal layer, and the molten second metal enters the cavity of the mold at a speed of at least 70 meters per second (m/s).

Abstract: A method for manufacturing a plate including multiple metal layers is provided. The method includes: disposing a semi-finished plate formed of a first metal in a mold, wherein a surface of the semi-finished plate is roughened; and injecting a second metal in liquid form onto the roughened surface of the semi-finished plate, so as to form a second metal layer on the semi-finished plate, wherein the second metal in liquid form covers and fills the roughened surface of the semi-finished plate. Not only does the multi-layer metal plate manufactured according to the method have the strength and elasticity of a composite metal, but also increase the joining, bonding or engagement strength between the first and second metal layers without laser welding.

Abstract: A method and a device for manufacturing a cover including multiple metal layers are provided. The method includes: injecting a second metal in liquid form which is a metal different from a first metal layer onto a semi-finished cover disposed in a mold and formed of the first metal layer, so as to form a second metal layer on the first metal layer; and pressing the second metal layer with a pressure in the mold. Not only does the multi-layer metal cover manufactured according to the method have the strength and elasticity of a composite metal, but also subsequent surface treatment may be performed on the metal cover as required, such as anodizing surface treatment, and corrosion resistant treatment, to further improve the adhesiveness between metal layers, the strength and the corrosion resistance, and make the design of the cover more flexible.

Abstract: A method and a device for manufacturing a cover including multiple metal layers are provided. The method includes: injecting a second metal in liquid form which is a metal different from a first metal layer onto a semi-finished cover disposed in a mold and formed of the first metal layer, so as to form a second metal layer on the first metal layer; and pressing the second metal layer with a pressure in the mold. Not only does the multi-layer metal cover manufactured according to the method have the strength and elasticity of a composite metal, but also subsequent surface treatment may be performed on the metal cover as required, such as anodizing surface treatment, and corrosion resistant treatment, to further improve the adhesiveness between metal layers, the strength and the corrosion resistance, and make the design of the cover more flexible.