Method for manufacturing boron-containing aluminum plate material

摘要

A method for manufacturing a boron-containing aluminum plate material comprises: a spreading step for spreading boron-containing alloy particles (3) in the shape of a layer over a bottom plate (2) placed in a container (1); a preheating step for preheating both the container (1) and a tundish (6) mounted on the container (1); a casting step for enveloped-casting the layer of the boron-containing alloy particles (3) in the container (1) with molten aluminum (10) by pouring the molten aluminum (10) into the tundish (6) to manufacture an enveloped-cast plate (14) with a predetermined thickness; and a cutting step for cutting off shrinkage cavities (13) occurring in a feeder section (12) of the upper portion of the enveloped-cast plate (14).

主权项

1. A method for manufacturing a boron-containing aluminum plate material, the method comprising:
spreading boron-containing alloy particles comprising borate particles having a boron content of 5 mass % or more in a layer shape over a bottom plate of aluminum or aluminum alloy placed in a container; after the spreading, mounting a tundish on a top of the container and preheating the container and the tundish together at 300° C. to 500° C.; enveloped-casting the layer of the boron-containing alloy particles in the preheated container with molten aluminum or molten aluminum alloy by pouring the molten aluminum or molten aluminum alloy at 580° C. to 900° C. into the preheated tundish to fabricate an enveloped-cast plate with a predetermined thickness; and cutting off shrinkage cavities formed in a feeder section in an upper part of the enveloped-cast plate.