Method and device for controlling carbon content of high-nickel alloy cast iron

Abstract

The invention provides a method and device for controlling the carbon content of high-nickel alloy cast iron. The method comprises the steps that the smelting temperature and heat preservation power of the high-nickel alloy cast iron are determined; the decarbonization curve of the corresponding carbon content of the high-nickel alloy cast iron is determined according to the smelting temperature and the heat preservation power; the initial carbon content value of the high-nickel alloy cast iron at a full-furnace state is determined through detection; the corresponding relation table of a corresponding carbon content supplementing value and time is determined according to a preset target carbon content value, the initial carbon content value and the decarbonization curve; and in the smelting heat preservation process of the high-nickel alloy cast iron, a carburant is added to a smelting furnace according to the corresponding relation table of the carbon content supplementing value and the time. According to the technical scheme, the continuous stability of the carbon content in the smelting heat preservation process of the high-nickel alloy cast iron is effectively guaranteed, the phenomenon that the carbon content of the high-nickel alloy cast iron is out of control is effectively reduced, and the product quality is guaranteed.

Description

technical field [0001] The invention relates to the technical field of smelting control of high-nickel alloy cast iron, in particular to a method for controlling the carbon content of high-nickel alloy cast iron and a device for controlling the carbon content of high-nickel alloy cast iron. Background technique [0002] The decarburization of high-nickel alloy cast iron is difficult to control during the smelting and heat preservation process. In related technologies, the composition of the furnace liquid is generally detected at least 4 times during the smelting and heat preservation process, namely full furnace, 3 / 4 furnace, 1 / 2 For furnaces and 1 / 4 furnaces, carbon replenishment is carried out according to the composition detection results of the furnace liquid, and the composition detection and confirmation are carried out again. The detection process is time-consuming, and the detection cost is high. Inaccurate control of ingredients has the risk of unqualified product ...

AI Technical Summary

Problems solved by technology

[0002] The decarburization of high-nickel alloy cast iron is difficult to control during the smelting and heat preservation process. In related technologies, the composition of the furnace liquid is generally detected at least 4 times during the smelting and heat preservation process, namely full furnace, 3 / 4 furnace, 1 / 2 For furnaces and 1 / 4 furnaces, carbon replenishment is carried out according to the composition detection results of the furnace liquid, and the composition detection and confirmation are carried out again. The detection process is time-consuming, and the detection cost is high. Inaccurate ingredient control, there is a risk of unqualified product ingredients

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