Device for automatically performing temperature measurement and sampling on molten steel under vacuum state

Abstract

The invention discloses a device for automatically performing temperature measurement and sampling under a vacuum state. A multistage hydraulic cylinder is fixedly mounted on the upper end of a body; a temperature measurement lance and a sampling lance are connected with a piston rod of the multistage hydraulic cylinder through a connector; the lower end of the body is respectively provided with a balancing device, a sealing cover and an operation hole; and the bottom end of the body is connected with a smelting furnace through a flange, wherein the temperature measurement lance and the sampling lance are connected with the threaded piston rod of the multistage hydraulic cylinder through the connector in the body, the sealing cover is mounted in the body, and the operation hole is arranged on one side of the body. The device provided by the invention has the characteristics of simple structure, low cost, convenience in use and operation, stable operation and no furnace blowout, and solves the problem that molten metal under a vacuum state can not be subjected to temperature measurement and sampling in the metal smelting process in a long time. Besides, single-lance operation or multi-lance operation can be realized, and the production efficiency is high. Due to hydraulic transmission, the device provided by the invention has high temperature measurement and sampling success rates, is stable in operation, avoids shaking and other problems during manual operation and can be widely used in the metal smelting industry.

Description

technical field [0001] The invention relates to a vacuum smelting appliance, in particular to a device for automatically measuring temperature and sampling molten steel in a vacuum state. Background technique [0002] At present, when smelting metals under vacuum, in order to ensure that the molten metal is kept in a vacuum state, it is impossible to detect the temperature and composition of the molten metal in the molten pool. For example, during the refining process of molten steel outside the VOD furnace, because of The carbon content in molten steel is constantly decreasing. From the steelmaking process, it is necessary to ensure that the C content in molten steel and the temperature of molten steel are within the target value, so as to ensure the smooth progress of subsequent work links. Therefore, in reality, a kind of energy A device for extracting molten steel samples and detecting the temperature of molten steel in a vacuum state, detecting the temperature of molten...

AI Technical Summary

Problems solved by technology

[0002] At present, when smelting metals under vacuum, in order to ensure that the molten metal is kept in a vacuum state, it is impossible to detect the temperature and composition of the molten metal in the molten pool. For example, during the refining process of molten steel outside the VOD furnace, because of The carbon content in molten steel is constantly decreasing. From the steelmaking process, it is necessary to ensure that the C content in molten steel and the temperature of molten steel are within the target value, so as to ensure the smooth progress of subsequent work links. Therefore, in reality, a kind of energy A device for extracting molten steel samples and detecting the temperature of molten steel in a vacuum state, detecting the temperature of molten steel and extracting samples of molten steel when necessary

However, under the current metallurgical equipment conditions, if you want to detect the temperature of molten steel and extract molten steel samples, it must be in the atmosphere, that is, if you want to detect the temperature of molten steel during the vacuum smelting process and extract molten steel samples, you must break the vacuum and open the vacuum tank Cover can detect the temperature of molten steel and sample molten steel, resulting in continuous smelting, long detection time and complicated operation; if the composition and temperature of the sample do not reach the smelting effect, it is necessary to restart the vacuum equipment or other equipment to re-smelt molten steel , but also cause a lot of waste of energy and a significant reduction in productivity

Under the current technical conditions, there is no precedent for automatic temperature measurement and sampling under vacuum

Especially on some large-capacity metallurgical furnaces, there are defects such as the increase in length and weight of the temperature measurement sampling gun due to the large size of the equipment

Images