Preparation for material resistant to aluminum water corrosion and having nonstick aluminum characteristics

Abstract

The invention relates to a preparation method for a casting nozzle material and discloses preparation for a casting nozzle material resistant to aluminum water corrosion and having nonstick aluminum characteristics. During the preparation for the casting nozzle material resistant to aluminum water corrosion and having the nonstick aluminum characteristics, ceramic fibers serve as main raw materials of the casting nozzle material, and a filler, an organic adhesive, barium salt and an inorganic binding agent are added; the ceramic fibers, the filler, the barium salt, the organic adhesive and the inorganic binding agent are mixed in a certain proportion and put into a stirrer, a solvent is added to perform stirring, and a uniformly-mixed water soluble dispersant is prepared; redundant water is discharged from a multi-directional vacuum self-suction type press, and compression molding is performed; a compression-molded blank is dried and then sintered; the sintered casting nozzle material is put into a hexagonal boron nitride solution, soaked, taken out, dried and then prepared into an aluminum-free casting nozzle material resistant to aluminum water corrosion. By virtue of the preparation method, the casting nozzle material has the characteristic of aluminum water corrosion resistance from the surface to the interior.

Description

technical field

[0001] The invention relates to a preparation method of a nozzle material, in particular to a preparation method of a nozzle material which is corrosion-resistant to aluminum water and has the property of not sticking to aluminum. Background technique

[0002] The casting nozzle device is the key refractory material for aluminum alloy continuous casting and rolling. It is located at the key position where the metal aluminum liquid flows from the front box into the roll, and directly affects the quality and output of the casting and rolling slab. At present, the casting nozzle material is usually made of ceramic fiber as the main raw material, a certain amount of binder is added, it is formed by vacuum suction filtration molding method, and then the casting nozzle material is obtained by high temperature sintering. The nozzle material should have excellent thermal insulation performance, good service strength, and low bulk density. At the same time, the nozzle...