Integral continuous casting cutting nozzle and processing method thereof

Abstract

The invention discloses an integral continuous casting cutting nozzle and a processing method thereof, which have the advantages that the structure and the processing are simple, the gas is not leaked, the deformation is small, and the process is simple. The cutting nozzle comprises an integral core body, wherein the integral core body consists of a core seat, a core head and a core rod through integral processing, and a pre-mixing chamber is arranged on the core seat of the integral core body. In the processing method, firstly, a gas inlet concave ring groove and a gas mixing concave ring groove are processed on the frustum-shaped core seat, then, an inclined hole is drilled on a corresponding convex ring table in a direction from the gas inlet concave ring groove to the pre-mixing chamber and is made into a fuel gas hole, and a hole is drilled on the corresponding convex ring table in a direction from one side of a mixing chamber to the pre-mixing chamber and is made into a preheating oxygen hole.

Description

technical field [0001] The invention relates to a cutting device, in particular to an integrated continuous casting cutting nozzle for steelmaking continuous casting and a processing method thereof. Background technique [0002] In the production of steelmaking and continuous casting, the cutting speed and reliability of the cutting nozzle become the bottleneck of improving the cutting production efficiency of steelmaking and continuous casting. Therefore, a higher continuous casting cutting speed is required to meet the increasing demand for casting speed. The consumption of cutting gas is the most important issue. Due to the structural reasons, most of the existing continuous casting cutting nozzles have large slits, low cutting speed and quality, high energy consumption and high cutting cost. However, the current improved cutting nozzles have been improved and improved in the above aspects, but the effect is not ideal enough, especially the existing continuous casting cut...

AI Technical Summary

Problems solved by technology

The consumption of cutting gas is the most important issue. Due to the structural reasons, most of the existing continuous casting cutting nozzles have large slits, low cutting speed and quality, high energy consumption, and high cutting costs.

However, the current improved cutting nozzles have been improved and improved in the above aspects, but the effect is not ideal enough, especially the existing continuous casting cutting nozzles, which constitute the core head and core rod of the nozzle core, are generally processed separately. The split type is composed of threaded connection; the biggest disadvantage of the cutting nozzle with this structure is that it is affected by the inconsistency of the high temperature expansion coefficient, and the joint is easy to deform and loosen, which will cause air leakage and tempering on the one hand, and on the other hand Disturbing the original airflow order leads to the reduction of cutting quality and efficiency

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