Metal material solidification structure adjustment and control method for on-line monitoring based on temperature of furnace shell

Abstract

The application relates to the technical field of vacuum arc melting of a metallic material, in particular to a metal material solidification structure adjustment and control method for on-line monitoring based on temperature of a furnace shell. The metal material solidification structure adjustment and control method comprises the following steps of according to the lowest co-elution transition temperature of alloy samples to be melted, the atmosphere limit temperature of a furnace chamber of a melting furnace is determined, and the limit temperature of the furnace shell is calculated; and atleast two measurement devices are formed on the outer furnace shell corresponding to the upper end surface and space above the upper end surface of a crucible in the furnace, of the melting furnace,the furnace shell is subjected to temperature measurement at the measurement position, and the real-measured furnace shell temperature is always lower than or equal to the limit temperature of the furnace shell. Results prove that when the atmosphere temperature of the furnace chamber is related with the temperature of the furnace shell, the temperature of the furnace shell is measured, and the temperature of the furnace chamber is guaranteed not to be too high to generate ingot structure segregation, i.e. the metal material solidification structure adjustment and control method for on-line monitoring based on temperature of the furnace shell can effectively prevent structure segregation, and the melting structure is uniform.

Description

technical field [0001] The present application relates to the technical field of vacuum arc melting of metal materials, in particular to a method for regulating the solidification structure of metal materials based on online monitoring of furnace shell temperature. Background technique [0002] At present, in order to ensure the uniformity of the composition of ingots melted by active metals such as titanium alloys, multiple smelting processes are often used in the vacuum arc smelting process, and the heat release of repeated arc smelting causes the temperature of the vacuum or inert protective atmosphere to rise sharply, resulting in the ingot solidification process. There is a large difference in the cooling rate of the upper and lower end surfaces (the upper end surface is mostly air-cooled or furnace-cooled, and the lower end surface is copper plate water-cooled), and the composition of the ingot is segregated, which seriously affects the quality of the ingot. Therefore, ...

AI Technical Summary

Problems solved by technology

[0002] At present, in order to ensure the uniformity of the composition of ingots melted by active metals such as titanium alloys, multiple smelting processes are often used in the vacuum arc smelting process, and the heat release of repeated arc smelting causes the temperature of the vacuum or inert protective atmosphere to rise sharply, resulting in the ingot solidification process. There is a large difference in the cooling rate of the upper and lower end surfaces (the upper end surface is mostly air-cooled or furnace-cooled, and the lower end surface is copper-plate water-cooled), and the composition of the ingot is segregated, which seriously affects the quality of the ingot. Therefore, it is of great significance to reasonably control the atmosphere temperature of the furnace.

Images