Method for detecting continuously-cast small-square-billet liquid core

Abstract

The invention provides a method for detecting a continuously-cast small-square-billet liquid core, and belongs to the technical field of detection of steel-making continuously-cast billets. The method is used for detecting the position of the continuously-cast small-square-billet liquid core. According to the technical scheme, a lead tracer agent is added into a tundish in the last pouring phase, after being pulled out, a tail billet is subjected to multiple times of sampling at the same time interval, and each sample is sawn and polished; then the samples are scanned through an X-ray scanner, and scanning results are recorded; according to the scanning results, the samples are arranged according to a sample number sequence, the sample with the solidified tail end liquid core is found out, and the length of the liquid core is obtained according to corresponding the number of the found sample. The method of determining the position of the liquid core through the tracer agent is pioneered in production of continuously-cast small square billets, the position of the continuously-cast small-square-billet liquid core can be accurately determined, the effect of tail end electromagnetic stirring is given to the maximum play, and therefore the quality of drawn wire rods is improved, and user requirements are met. By means of the method, the problems which are not solved for a long time in production of the continuously-cast small square billets are solved, and the method has remarkable economic benefits and high application and popularization value.

Description

technical field [0001] The invention relates to a method for detecting a liquid core of a continuous casting billet, belonging to the technical field of steelmaking and continuous casting billet detection. Background technique [0002] High-grade drawn wire is an indispensable and important raw material in the development of the national economy, and is mainly used in construction, vehicles, bridges and other industries. The above-mentioned wire rod is mainly drawn and rolled from a billet, and has the characteristics of high carbon content. With the rapid development of production and the continuous improvement of product quality, users have put forward higher requirements for the quality and performance of wire rods. At present, internal quality problems such as center segregation and center porosity often occur in the production process of high-carbon wire rod billet, which seriously affects the drawing performance of the wire rod and makes the wire rod quality unable to...

AI Technical Summary

Problems solved by technology

At present, due to the technical characteristics of continuous casting production, it is difficult to determine the position of the liquid core, and the simulation method is usually used, but there are certain errors

So far, the problem of how to determine the position of the liquid core of the billet has not been effectively solved in the production process, and it has become a difficult problem to improve the drawing performance of the wire rod, which urgently needs to be solved by enterprises and technicians

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