A method for automatic temperature measurement and sampling of steelmaking converter door

Abstract

The invention provides a method for automatic temperature measurement and sampling of a steelmaking converter door, which includes a running mechanism that moves on the ground track in front of the converter door, a suspended furnace front fire door and a temperature measuring and sampling robot that are jointly installed on the running mechanism. Among them, when the temperature measuring and sampling robot is in the standby position, its steel slag splash protection plate and the suspended furnace front fire door form a complete slag splash and high temperature radiation protection baffle; the robot collects real-time image information of the furnace mouth to provide information for operators to maintain the converter , the robot collects the position information of molten steel and slag blocks, and can independently decide and control the extension distance and insertion position of the temperature measurement sampling probe. The invention uses a robot to replace manual temperature measurement and sampling, which can prevent operators from being scalded by steel slag spray and significantly improve the success rate of operations, and is an advanced technology with wide application prospects.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to an automatic temperature measurement and sampling method for a furnace door of a steelmaking converter. Background technique [0002] Converter steelmaking is an advanced technology for large-scale production of high-quality and cheap molten steel. The steelmaking process of most converters is divided into five steps: a) Add steelmaking materials such as molten iron, scrap steel, and pig iron into the converter; b) Control the blowing state of the converter by controlling the height and flow of the oxygen lance. During the process, slag-forming materials are added through the bunker on the furnace roof and slag is melted; c) the end point is predicted, and the temperature is sampled and measured; d) deoxidation and alloying are performed, and the molten steel is tapped; e) slag is splashed to protect the furnace. At present, there are two forms of temperature meas...

AI Technical Summary

Problems solved by technology

The carbon-oxygen reaction is severe in the middle and late stages of blowing. When the temperature is too high, the FeO in the slag decreases, and 3CaO·SiO with a high melting point is easily formed. 2 etc., making the slag return to dryness, and some solid particles such as CaO and MgO and large ion group substances are precipitated.

Therefore, the existing converter production process is still unavoidable manual temperature measurement and sampling

[0004] CN108444616A and CN108359767A disclosed "a kind of automatic temperature measurement and sampling system in front of molten steel of steelmaking converter" and "automatic temperature measurement and / or sampling method in front of molten steel in steelmaking converter", with very complex devices and very The cumbersome method realizes the automatic temperature measurement and / or sampling of the molten steel in the steelmaking converter, but there are many unreasonable points. For example, from the order of temperature measurement and sampling to the insertion of the probe into the molten steel, the device needs to perform 7 actions to complete. The configured robot does not perform the operation of temperature measurement and sampling, and the function of the machine vision system is only to determine the deformation of the temperature measurement and sampling gun head at the casing disassembly position

Including CN204903227U automatic temperature measurement and sampling device for molten steel, CN206599583U automatic temperature measurement and sampling device for steelmaking furnace, CN104697813B automatic temperature measurement and sampling device for steelmaking furnace, CN202830074U inclined sub-lance driving device, CN202793645U automatic temperature measurement and sampling device for molten steel in steelmaking process , CN206052067U converter steelmaking end point parameter detection and liquid steel sample lifting probe automatic delivery system and telescopic tube assembly and other public technologies, or fixedly installed on a fixed bracket, or with a complicated rotary mechanism, etc., but they are all single-function The automatic device cannot select and change the position of the measuring point in real time to avoid agglomeration in the molten steel, so the success rate of automatic temperature measurement and sampling is very low

[0005] However, the existing temperature measurement and sampling robot uses a multi-joint six-degree-of-freedom robotic arm, which has a high failure rate and insufficient reachable space, and is mainly used in production places such as electric furnaces or refining furnaces. A new method of temperature sampling and an intelligent multifunctional temperature measurement and sampling robot can overcome the above-mentioned deficiencies

Images