High-temperature alloy double-roller cast rolling process

Abstract

According to the high-temperature alloy double-roller cast-rolling process, the double-roller cast-rolling process is used for high-temperature alloy preparation for the first time, cast-rolling process parameters are adjusted from the characteristics of the high-temperature alloy and the cooperative research of the casting temperature and the cooling speed according to the defects in the preparation process, and the high-temperature alloy is prepared. The defects of bulging, liquid leakage, uneven structures and the like are avoided, meanwhile, the stability of the solidification process is guaranteed through control over the vacuum degree and periodic detection, finally, the alloy liquid stands for a period of time after being poured into the baked tundish, the temperature of the alloy liquid is uniform, and the alloy quality is improved. And the alloy liquid is heated by adopting the electric heating wire embedded in the tundish refractory material, so that the alloy liquid is not polluted while heat is provided. By the adoption of the technology adjusted through the method, cast rolling production of high-temperature alloys with different components can be achieved, the production efficiency can be improved while the product quality requirement is met, and the production cost is reduced.

Description

technical field [0001] The invention relates to the field of high-temperature alloy preparation, in particular to a high-temperature alloy twin-roll casting and rolling process. Background technique [0002] Superalloys are widely used in aerospace, nuclear power plants, power plants and other fields due to their good high temperature creep properties, excellent corrosion resistance and wear properties, as well as long-term microstructure stability and process properties. The traditional production of superalloy plates and strips is to mold the metal, and then process the ingot by forging, hot rolling, welding, cold rolling, etc. This production process requires large investment in equipment, many processes, poor surface quality, There are many cracks, low yield and low production efficiency. In order to improve production quality and reduce production cost, it is urgent to develop a superalloy production process with low production cost and high product quality. [0003] ...

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned problems existing in the prior art, the superalloy solidification process was analyzed by consulting the literature. Due to the high casting temperature of the superalloy, the existence of the liquid core during the casting and rolling process will lead to defects such as bulging, liquid leakage, and poor solidification structure. Occurrence of homogeneous phenomenon, in order to overcome described defect, improve twin-roller casting-rolling process, provide a kind of casting-rolling process suitable for superalloy production, comprise the steps:

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